Samsung AM120FXWANR User Manual
Displayed below is the user manual for AM120FXWANR by Samsung which is a product in the Split-System Air Conditioners category. This manual has pages.
Related Manuals
DVM S WATER-GEO
AM✴✴✴FXWA Series
AM✴✴✴KXWA Series
Air Conditioner
installation manual
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Thank you for purchasing this Samsung product.
DB68-04066A-12
ENGLISH-2
Contents
Before Installation
Safety precautions ..........................................................................................................3
Preparing for installation ....................................................................................................6
Selecting installation location .............................................................................................11
Space requirement for installation.........................................................................................12
Accessories ...............................................................................................................14
Installing the product
Base construction and installation of the outdoor unit .....................................................................15
Drain pipe installation.....................................................................................................17
Refrigerant pipe installation ...............................................................................................19
Electrical wiring work .....................................................................................................48
Air tightness test and vacuum drying......................................................................................61
Pipe insulation ............................................................................................................63
Refrigerant collection .....................................................................................................67
Charging refrigerant ......................................................................................................68
Basic segment display.....................................................................................................70
Setting outdoor unit option switch and key function ......................................................................71
Setting the MCU and Pipe Addresses (for HR Only).........................................................................82
Water pipe installation ....................................................................................................86
External contact connection...............................................................................................89
Explanation of optional functions .........................................................................................90
Others
Things to check after completing the installation ..........................................................................93
Inspection and test operation .............................................................................................94
Inspection and trial operation .............................................................................................97
Automatic refrigerant amount checking function..........................................................................99
Maintenance.............................................................................................................101
Cooling water management .............................................................................................103
Appendix ................................................................................................................106
For information on Samsung’s environmental commitments and product-specic regulatory obligations, e.g. REACH,
WEEE, Batteries, visit : samsung.com/uk/aboutsamsung/samsungelectronics/corporatecitizenship/data_corner.html
ENGLISH-3
01 BEFORE INSTALLATION
Safety precautions
Before installing an air conditioner, please read this manual thoroughly to ensure that you know how to safely and eciently
install a new appliance.
❋ DVM S WATER-GEO air conditioner uses R-410A refrigerant.
- When using R-410A, moisture or foreign substances may aect the capacity and reliability of the product. Safety
precautions must be taken when installing the refrigerant pipe.
- The designed maximum pressure of the system is 4.1MPa. Select appropriate material and thickness according to the
regulations.
- R-410A is a quasi-azeotrope of two refrigerants. Make sure to charge with liquid phase when lling refrigerant. (If you
charge vapor refrigerant, it may aect the capacity and reliability of the product as a result of a change in the blend of
the refrigerant.)
❋ You must connect the indoor units for R-410A refrigerant. When indoor units for R-22 refrigerant are connected, they
cannot operate normally.
❋ DVM S WATER-GEO air conditioner uses plate type heat exchanger, and extra concern must be taken regarding on
selecting the installation location since it requires water pipe installation.
❋ For product protection, it is recommended to adopt closed circuit cooling tower or indirect water pipe circuit structure for
DVM S WATER-GEO air conditioner.
Before the installation, read the ‘Severe warning signs’ and the ‘Caution signs’ thoroughly.
Manufacturer is not responsible for accidents due to incorrect installation. (Installer will be responsible for any service charges
that may occur.)
Product is irrelevant to any installation or performance problem of the cooling tower and water pipes.
Anti-freeze must be used when temperature of water inlet for heating is below 10°C or ground heat source is used.
WARNING Hazards or unsafe practices that may result in severe personal injury or death.
CAUTION Hazards or unsafe practices that may result in minor personal injury or property damage.
SEVERE WARNING SIGNS
Installation must be requested to a qualied installer.
f If the user installs a product improperly on their own, it may cause water leakage, electric shock or re.
Install the unit in a place where it is strong enough to hold the product weight.
f When installed in place where it is not strong enough to withhold the product weight, the unit could fall and cause injury.
Electric work must be done by qualied persons, complying the national wiring regulations and installed according to
the instruction stated in the installation manual with leased circuit.
f Capacity shortage on the leased circuit and improper installation may cause electric shock or re.
Use specied wires to connect indoor and outdoor units, and make sure the wire is rmly xed.
f Improper connection may cause re.
ENGLISH-4
Safety precautions
Neatly arrange the wires in the electrical parts to make sure that electrical cover is closed securely without any gaps.
f If the cover is not properly closed, heat may be generate on the electrical terminal and cause electric shock or re.
Make sure to use the provided or specied parts with the specied tools for installation.
f Failing to do so may cause product falling, water leakage, re or electric shock.
In any case of refrigerant leakage, make sure to ventilate.
f If the refrigerant gas comes in contact with re, harmful gas will be generated.
f Make sure that the refrigerant gas does not leak after completing the installation. If the refrigerant gas of the indoor unit
leaks and comes into contact with the fan heater, space heater or stove, harmful gas will be generated.
Make sure to perform grounding work.
f Do not connect the ground wire to a gas pipe, water pipe, lightning rod or telephone grounding. Improper grounding
could cause electric shock.
Do not install the product in a place where it is or might be exposed to inammable gas leakage.
f When the gas leaks and gets accumulated around the product, it may cause re.
Installation work must be done according to the instruction in this installation manual.
f Improper installation may cause water leakage, electric shock or re.
When inserting the power plug, make sure to insert it fully and check that power plug and a consent does not have any
dust, blockage or loosened part.
f If there is dust, blockage or loosened part on a power plug or consent, it can cause electric shock or re. Also, replace the
consent if it is loosened.
When installation is in progress, check the following before operating the product.
f Make sure pipes are properly connected without any leakage.
f Service valve should remain open. If the compressor operates with service valve closed, compressor or other parts may
get damaged due to overpressure. Also, if there is leakage on the connection part, air inow and other matter may make
the status even more overpressured, which can cause personal injury due to explosion.
Stop the compressor before disconnecting the refrigerant pipe for pump-down operation.
f If you disconnect the refrigerant pipe while compressor is operating with service valve open, air inow will cause
excessive pressure in the refrigerant cycle that could lead to explosion and personal injury.
Do not assemble the power cord on your own, use two cables together to extend the cable length or connect the power
to a multi consent connected with other products.
f Bad connection, isolation and over voltage may cause re or electric shock.
Cut-o the main power supply before indoor unit electrical installation.
f Potential risk or electric shock.
You may need to install an ELB (earth leakage breaker) depending on the installation location.
f Not installing an ELB (earth leakage breaker) may cause electric shock.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not
play with the appliance.
For use in Europe: This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play
with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
ENGLISH-5
01 BEFORE INSTALLATION
CAUTION SIGNS
Perform the drainage/piping work securely according to the installation manual.
f If not, water could drop from the unit and household goods could get wet and damaged.
Fasten a are nut with a torque wrench as specied in this installation manual.
f When fastened too tight, a are nut may break after a long period of time and cause refrigerant leakage.
Wear thick gloves during the installation process.
f If not, personal injury may occur due to the air conditioner parts.
Do not install the outdoor unit in a place where animals could live.
f If an animal get contact with the electric parts, damage or re may occur. In addition ask the customer to maintain a
clean installation place around it.
After completing the installation run the trial operation. If no error occurs, explain to the customer how to use and clean
the air conditioner according to the user’s manual. In addition give the installation manual and the user’s manual to the
customer.
Before the installation, check if the product is in good shape.
f Do not install the product if there is any damage which occurred during shipment.
All the materials used to manufacture the product and packages are eco-friendly and they are recyclable.
Refrigerant used in this product must be added or disposed in an appropriate way by qualied personnel.
f At the end of the life cycle, take it to a proper recycling or disposal center or return it to the dealer so that it can be
disposed correctly.
ENGLISH-6
Preparing for installation
Outdoor unit classication
Classication Small chassis Large chassis
Appearance
Models AM080/100/120FXWA✴AM200FXWA✴/AM300KXWA✴
Packaging material disposition
• Safely store or dispose the packaging materials.
- Sharp metals such as nails or wooden material packaging that may break into pieces become a cause for
personal injury.
- Make sure to store or dispose the vinyl type packaging material to keep it out of reach of children. Children
may put them over their face, which is very dangerous since it may lead to suocation.
CAUTION
ENGLISH-7
01 BEFORE INSTALLATION
Outdoor unit combination
f Make sure to use an indoor unit that is compatible with DVM S WATER-GEO.
f Indoor units can be connected within the range indicated in following table.
f If the total capacity of the connected indoor units exceeds the indicated maximum capacity, cooling and heating capacity
of the indoor unit may decrease.
f Total capacity of the connected indoor units can be allowed from 50% to 130% of the total outdoor unit capacity. 0.5 ×
Σ(Outdoor unit capacity) ≤ Total capacity of the connected indoor units ≤ 1.3 × Σ(Outdoor unit capacity)
❋ You can connect maximum 64 indoor units to the outdoor unit. Maximum quantity of connectable indoor unit is set to 64
since outdoor unit only support up to 64 communication address. Indoor unit address can be assigned from 0~63. If the
indoor unit address was assigned from 64~79, E201 error will occur.
❋ Maximum 32 Wall-mount type indoor units with EEV (AM✴✴✴✴NQDEH✴, AM✴✴✴JNV✴) can be connected.
❋ Do not install 1st-generation MCU and 2nd-generation MCU together.
- 1st-generation MCU: MCU-S✴NEE✴N
- 2nd-generation MCU: MCU-S✴NEK2N, MCU-S4NEK3N, MCU-S1NEK1N
• Use the following table to determine the size and number of outdoor units needed to achieve thecapacity
requirements.
CAUTION
Premium energy eciency type
Model name for combination
AM080FXWANR AM100FXWANR AM120FXWANR AM160FXWANR2 AM180FXWANR2 AM200FXWANR
Number of individual outdoor units
111221
Combined outdoor unit
AM080FXWANR
121
AM100FXWANR
11
AM120FXWANR
1
AM200FXWANR
1
Rated capacity Cooling (kW)
22.4 28.0 33.6 44.8 50.4 56.0
Heating (kW)
25.2 31.5 37.8 50.4 56.7 63.0
Total capacity of the
connected indoor units
(Cooling)
Minimum (kW)
11.2 14.0 16.8 22.4 25.2 28.0
Maximum (kW)
29.1 36.4 43.7 58.2 65.5 72.8
Maximum number of connectable indoor
units
14 18 22 29 32 36
Model name for combination
AM220FXWANR2 AM240FXWANR2 AM260FXWANR2 AM280FXWANR2 AM300FXWANR2 AM320FXWANR2
Number of individual outdoor units
223222
Combined outdoor unit
AM080FXWANR
21
AM100FXWANR
111
AM120FXWANR
12 1
AM200FXWANR
111
Rated capacity Cooling (kW)
61.6 67.2 72.8 78.4 84.0 89.6
Heating (kW)
69.3 75.6 81.9 88.2 94.5 100.8
Total capacity of the
connected indoor units
(Cooling)
Minimum (kW)
30.8 33.6 36.4 39.2 42.0 44.8
Maximum (kW)
80.1 87.4 94.6 101.9 109.2 116.5
Maximum number of connectable indoor
units
40 44 47 51 55 58
ENGLISH-8
Preparing for installation
Model name for combination AM340FXWANR2 AM360FXWANR2 AM380FXWANR2 AM400FXWANR2 AM420FXWANR2
Number of individual outdoor units 33323
Combined outdoor unit
AM080FXWANR 21
AM100FXWANR 111
AM120FXWANR 21
AM200FXWANR 1121
Rated capacity Cooling (kW) 95.2 100.8 106.4 112.0 117.6
Heating (kW) 107.1 113.4 119.7 126.0 132.3
Total capacity of the
connected indoor units
(Cooling)
Minimum (kW) 47.6 50.4 53.2 56.0 58.8
Maximum (kW) 123.8 131.0 138.3 145.6 152.9
Maximum number of connectable indoor
units 62 64 64 64 64
Model name for combination AM440FXWANR2 AM480FXWANR2 AM500FXWANR2 AM520FXWANR2 AM600FXWANR2
Number of individual outdoor units 33333
Combined outdoor unit
AM080FXWANR 1
AM100FXWANR 1
AM120FXWANR 21
AM200FXWANR 12223
Rated capacity Cooling (kW) 123.2 134.4 140.0 145.6 168.0
Heating (kW) 138.6 151.2 157.5 163.8 189.0
Total capacity of the
connected indoor units
(Cooling)
Minimum (kW) 61.6 67.2 70.0 72.8 84.0
Maximum (kW) 160.2 174.7 182.0 189.3 218.4
Maximum number of connectable indoor
units 64 64 64 64 64
Premium compact type
Model name for combination
AM300KXWANR AM380KXWANR1 AM400KXWANR1 AM420KXWANR1 AM460KXWANR1
Number of individual outdoor units 12223
Combined outdoor unit
AM080FXWANR
12
AM100FXWANR
1
AM120FXWANR
1
AM200FXWANR
AM300KXWANR
11111
Rated capacity Cooling (kW)
84.0 106.4 112.0 117.6 128.8
Heating (kW)
94.5 119.7 126.0 132.3 144.9
Total capacity of the
connected indoor
units
Minimum (kW)
42.0 53.2 56.0 58.8 64.4
Maximum (kW)
109.2 138.3 145.6 152.9 188.4
Maximum number of connectable indoor
units 55 64 64 64 64
ENGLISH-9
01 BEFORE INSTALLATION
Model name for combination
AM480KXWANR1 AM500KXWANR1 AM520KXWANR1 AM540KXWANR1 AM580KXWANR1
Number of individual outdoor units 32333
Combined outdoor unit
AM080FXWANR
11
AM100FXWANR
11
AM120FXWANR
12
AM200FXWANR
11
AM300KXWANR
11111
Rated capacity Cooling (kW)
134.4 140.0 145.6 151.2 162.4
Heating (kW)
151.2 157.5 163.8 170.1 182.7
Total capacity of the
connected indoor
units
Minimum (kW)
67.2 70.0 72.8 75.6 81.2
Maximum (kW)
174.7 182.0 189.3 221.1 237.5
Maximum number of connectable indoor
units 64 64 64 64 64
Model name for combination
AM600KXWANR1 AM620KXWANR1 AM680KXWANR1 AM700KXWANR1 AM800KXWANR1 AM900KXWANR1
Number of individual outdoor units
233333
Combined outdoor unit
AM080FXWANR
1
AM100FXWANR
1
AM120FXWANR
1
AM200FXWANR
11
AM300KXWANR
212223
Rated capacity Cooling (kW)
168.0 173.6 190.4 196.0 224.0 252.0
Heating (kW)
189.0 195.3 214.2 220.5 252.0 283.5
Total capacity of the
connected indoor
units
Minimum (kW)
84.0 86.8 95.2 98.0 112.0 126.0
Maximum (kW)
218.4 225.7 247.5 254.8 291.2 327.6
Maximum number of connectable indoor
units
64 64 64 64 64 64
ENGLISH-10
Preparing for installation
Moving the outdoor unit
f Select the moving path in advance.
f Be sure that moving path can support weight of the outdoor unit.
f Do not slant the product more than 30˚ when carrying it. (Do not lay the product down in sideways.)
f Surface of the heat exchanger is sharp. Be careful not to get injured while moving the product.
• You must use certain part of the product when moving the product.
CAUTION
When moving with a crane
f Fasten the wire rope as shown in the gure.
f To protect damage or scratches, insert a piece of cloth between the
outdoor unit and the wire rope.
Wire rope
Protection
cloth
Wooden
pallet
Spreader bar
When moving with a forklift
f Carefully insert the forklift forks into the forklift holes at the bottom of
the outdoor unit.
f Be careful with the forklift from damaging the product.
Forklift
When moving the product without wooden pallet and the crane is not available for use
f Connect a wire rope to the outdoor unit as you would move it with a
crane.
f Hang the wire rope to the forklift fork to move the outdoor unit. Wire rope
Forklift
Spreader
bar
ENGLISH-11
01 BEFORE INSTALLATION
Selecting installation location
Decide the installation location regarding the following condition and obtain user’s approval.
Standard installation condition
f Heat source water containing foreign substances can cause condenser and pipe corrosion as well as water scale.
Therefore, make sure that water source meets the standard of cooling water quality for refrigerating and air conditioning
equipment. (Refer to 'Cooling water management' on page 103.)
f Closed circuit cooling tower must be used, but when open cooling tower is in use, select indirect water pipe installation
method which water pipe of the building is not directly connected to the water pipe of the product.
f Strainer (which needs to be purchased separately) must be installed to the ‘Water IN’ pipes of the heat source water. If
sand, dust or rust debris enter to water system, it may cause corrosion on metallic materials or blockage of the water heat
exchanger and damage the heat exchanger.
f DVM S WATER-GEO air conditioner is not designed to be installed outdoor. There are risk of burst and frozen water pipes
when the outdoor unit is installed outdoor, therefore it must be installed indoor (machine room etc.)
Installation location condition
f Choose a place with ventilation duct or opening to cool down the heat generated from the product and maintain the
surrounding temperature within 0~40°C and the humidity below 80%.
f Choose a place where structure can bear the weight and vibration of the outdoor unit.
f Choose a at place that rainwater does not settle or leak.
f Choose a well ventilated place with sucient space for repair and other services.
f Choose a place where you can easily connect the refrigerant pipes between indoor and outdoor units within allowable
distance.
f This product is not salt tolerant, therefore do not install it near the sea or hot springs where outdoor unit may corrode.
• R-410A refrigerant is a safe, nontoxic and nonammable refrigerant. However, if the place holds any concerns for
exceeding dangerous level of refrigerant concentration in case of refrigerant leakage, extra ventilation system is
required.
• Do not install the product in a place with corrosive gas such as sulfur oxides, ammonia gas, sulfurous gases.
Example: near washroom exhaust pipe, ventilation duct outlet, or surface near hot spring etc. (Copper pipes and
soldered parts may corrode and cause refrigerant leakage.)
• Install the product in a place without any risk of inammable gas leakage.
• System air conditioner can be interfered with static noise when listening to AM radio. Therefore, select a location
where indoor unit can be installed while keeping optimal distance from the radio, computer, stereo equipment.
Furthermore, select a location where electrical wiring work is possible and put those wires in a individual
protection tubes and ground those protection tube.
- Especially, keep the unit at least 3 m away from the electrical equipment in an area with weak electromagnetic
waves and put the main power cable and communication cables in separately installed protection tubes, and
ground each protection tubes.
- Make sure that there is no equipment that generates electromagnetic waves. If not electromagnetic waves
may cause problem to the control systems which may lead to air conditioner malfunction. (Example: Remote
control sensor of the indoor unit may not be received well, due to ballast stabilizer of the lighting equipment.)
CAUTION
ENGLISH-12
Space requirement for installation
Minimum space requirement for installation
f Secure minimum installation space as shown in the following gures, considering service area and path for people etc.
- If the installation space is narrow, installer or other worker may get injured during work and may also cause problem to
the product.
f If the conditions does not meet the space requirement in this manual, please contact qualied installation agent.
Single installation
When the water pipe passes through top of the product
(Unit : mm)
<Top view>
Service space
Front side
C
Space for installing water
pipe
20
Outdoor unit
350 A100
B300
<Front view>
Anti-vibration pad
1000 500100
When the water pipe passes through back of the product
(Unit : mm)
<Top view>
Service space
Front side
C
Space for installing water
pipe
300
Outdoor unit
350 A300
B 500
<Front view>
Anti-vibration pad
1000 100100
ENGLISH-13
01 BEFORE INSTALLATION
Module or continuous installation
<Top view>
(Unit : mm)
Service space
Front side
C
20
Outdoor unit
350 A100
B300
350 A100
Service space
Front side
Outdoor unit
Model name of outdoor unit A B C
AM080/100/120FXWA✴✴ 770 545 600
AM200FXWA✴✴/AM300KXWA✴✴ 1100 545 600
• If the outdoor unit is needed to be installed close to the walls unavoidably, prevent the vibration from being
transferred to the walls with cushioning materials etc.
CAUTION
Double installation
(Unit : mm)
Service space
H beam support
100
100100
100 10001000
<Front view>
D
f For the double installation, service space is required for the front, rear, and sides of the product. For the size of the service
space, refer to the service space size of single, module or continuous installation.
f Clear enough space for D (space between outdoor units), so that water pipes connected to outdoor units does not block
the front side of the outdoor units next to it.
ENGLISH-14
Accessories
Accessories
f You must keep following accessories until the installation is nished.
f Hand over the installation manual to the customer after nishing the installation.
Name Installation manual Installation check card Packing socket
Quantity 111
Image
❋ Models with packing socket : AM080,100,120FXWA✴✴, AM300KXWA✴✴
❋ Socket can be dierent depending on the model (Page 20, 23)
Optional accessories
f Following optional accessories are needed for connecting pipes between the indoor and outdoor units.
Classication Model Name Specication
Y-Joint
MXJ-YA1509M 15.0kW and below
MXJ-YA2512M Over 15.0kW~40.0kW and below
MXJ-YA2812M Over 40.0kW~45.0kW and below
MXJ-YA2815M Over 45.0kW~70.3kW and below
MXJ-YA3419M Over 70.3kW~98.4kW and below
MXJ-YA4119M Over 98.4kW~135.2kW and below
MXJ-YA4422M Over 135.2kW
Y-Joint (Only H/R)
MXJ-YA1500M 22.4kW and below
MXJ-YA2500M Over 22.4kW~70.3kW and below
MXJ-YA3100M Over 70.3kW~135.2kW and below
MXJ-YA3800M 135.2kW and below
Distribution header
MXJ-HA2512M 45.0kW and below (for 4 rooms)
MXJ-HA3115M 70.3kW and below (for 8 rooms)
MXJ-HA3819M Over 70.3kW (for 8 rooms)
Y-Joint
- Outdoor unit
MXJ-TA3419M 134.4kW and below
MXJ-TA4122M 140.0kW and Over
Y-Joint (Only H/R)
- Outdoor unit
MXJ-TA3100M 134.4kW and below
MXJ-TA3800M 140.0kW and Over
❋ If you use an indoor unit with no internal EEV(Electric Expansion Valve), you will need an EEV kit.
❋ Only use the genuine accessories listed in above table and do not use imitated accessories.
❋ Recommended specication of the strainer
Work pressure Water pipe connection Mesh size Material(strainer/Mesh)
AM080/100/120/200✴AM300✴
1.96 MPa PT 1-1/4
(Internal thread)
PT 2
(Internal thread) 50 Mesh AISI316/SUS304
ENGLISH-15
02 INSTALLING THE PRODUCT
Base construction and installation of the outdoor unit
• Make sure to remove the wooden pallet before installing the outdoor unit. If you do not remove the wooden
pallet, there is risk of re during welding the pipes. If the outdoor unit is installed with wooden pallet on, and
it was used for long period time, wooden palette may break and cause electrical hazard or high pressure may
damage the pipes.
WARNING
❋ Fix an outdoor unit rmly on the base ground with anchor bolts.
❋ Manufacturer is not responsible for the damage occurred by not following the installation standards.
1. Make sure that the height of the base ground is 150 mm or higher to protect the outdoor unit from rain water or other
external conditions. Also, install a draining pit around the base ground and connect the drain pipe to the drainage.
2. Considering the vibration and weight of the outdoor unit, strength of the base ground must be strong to prevent noise
and the top surface of it should be at.
3. Base ground should be 1.5 times larger than the bottom of the outdoor unit.
4. Outdoor unit must be xed rmly so that it can withstand the wind speed of 30 m/s. If you cannot x the outdoor unit on
the base ground, x it by side or use extra structure.
5. In heating operation, defrost water may form so you must really care about the drainage and waterproong the oor. To
prevent defrost water from stagnating or freezing, construct a drainage with over 1/50 slope. (Ice may form on the oor
in winter time.)
6. It is necessary to add wire mesh or steel bar during concrete construction for the base ground to prevent damages or
cracks.
7. When installing multiple outdoor units at the same place, construct a H beam or an anti-vibration frame on the base
ground to install the outdoor unit.
8. After installing a H beam or an anti-vibration frame, apply corrosion protection and other necessary coating.
9. When concrete construction for outdoor unit installation is completed, install an anti-vibration pad (t=20 mm or more) or
an anti-vibration frame to prevent vibration of the outdoor unit from transferring to the base ground.
10. Place the outdoor unit on a H beam or an anti-vibration frame and x it with the bolt, nut and washer. (The bearing force
has to be over 3.5 kN)
ENGLISH-16
Base construction and installation of the outdoor unit
Foundation
<When installing on the ground>
Draining Ditch
Over 150 mm
Outdoor unit installation
Base ground
Foundation (or H beam
or anti-vibration frame) Outdoor unit
Anchor bolt
Nut, Spring washer
Foundation (or H beam or anti-
vibration frame)
Anti-vibration pad
Over A + 10~20 mm
A
20 mm
50 mm or
more
Insertion
depth
Fixing the outdoor unit
A
B
54
C
D
54
Hole on outdoor unit for xing anchor bolt (4 - Ø12)
Foundation (or H beam or anti-vibration frame)
(Unit : mm)
Classication Small type Large type
Models AM080/100/120FXWA✴✴ AM200FXWA✴✴/AM300KXWA✴✴
A 770 1100
B 656 995
C 523 515
D 550 550
❋ For adding the anti-vibration frame on the base ground, the specication for the xing hole depends on the specication
of the anti-vibration frame.
ENGLISH-17
02 INSTALLING THE PRODUCT
Drain pipe installation
Installing the drain pipe
f Attach the drain pipe to the drain socket (PT1/2) located on the bottom of the product.
Drain socket (PT 1/2)
Single installation
Outdoor unit
Slope over 1/50
Open to air
Drain socket
Module installation
Outdoor unit Outdoor unit
Drain socket
Slope over 1/50
Open to air
f Do not install trap and ensure the slope of the drain pipe is more than 1/50.
f Insulate the drain pipe and drain plug with insulation over 10 mm thick.
f Install self-regulating heating cable on the drain pipe to prevent it from freezing.
f If you have installed a heater to prevent drain pipe from freezing, install a safety equipment for a heating appliance.
ENGLISH-18
Drain pipe installation
Cautions regarding connecting the anchor bolt
f Use the rubber washer to prevent the anchor bolt from corroding.
Rubber washer
f Anchor bolt specications
Size Diameter of
the bore (a)
Anchor length
(b)
Sleeve length
(C)
Insertion
depth
Fastening
torque
a
b
c
M10
M10 14 mm 75 mm 40 mm 50 mm 30 N·m
❋ Use anchor bolts and nuts made of plated zinc or STS material. Regular anchor
bolts or nuts may get damaged by corrosion.
Cautions regarding anti-vibration frame installation
f During installation, make sure there is no gap between the base ground and the supporting structures such as
anti-vibration frame or H beam.
f Base ground must be constructed rmly to support the bottom part of the anti-vibration mount.
f After installing the anti-vibration frame, unscrew the xing part on the top and bottom part of the frame.
f If the anti-vibration frame or H beam is xed to the base ground with anchor bolts, make sure that
waterproofed surface is not damaged by anchor bolts and apply additional waterproof solution if necessary.
CAUTION
ENGLISH-19
02 INSTALLING THE PRODUCT
Refrigerant pipe installation
• When installing, make sure there is no leakage. When collecting the refrigerant, stop the compressor rst before
removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor is working
with the service valve open, the pipe sucks the air in which makes the pressure inside of the refrigerant cycle
abnormally high which may lead to explosion and injury.
WARNING
Refrigerant pipe work
f The length of refrigerant pipe should be as short as possible and the height dierence between an indoor and outdoor
unit should be minimized.
f Piping work must be done within allowable piping length, height dierence, and the allowable length after branching.
f The pressure of the R-410A is high. Use only certied refrigerant pipe and follow the installation method.
f After installing the pipes, calculate the total length of the pipe to check if additional refrigerant is needed. When you need
to charge the additional refrigerant, make sure to use R-410A refrigerant.
f The inside of the refrigerant pipe must be clean and contain no harmful ions, oxides, dust, iron particles or moisture.
f Use tools and accessories compatible with R-410A refrigerant gas.
Tool Installation
process/purpose Compatibility with conventional tool
Pipe cutter
Refrigerant pipe
installation
Pipe cutting
Compatible
Flaring tool Pipe aring
Refrigerant
machine oil
Apply refrigerant
oil on ared part Exclusive ether oil, ester oil, alkali benzene oil or synthetic oil
Torque wrench Connect are nut
with pipe
Compatible
Pipe bender Pipe bending
Nitrogen gas
Air tightness test
Prevent oxidation
within the pipe
Welder Pipe welding
Manifold gage Air tightness
test ~ additional
refrigerant
charging
Vacuuming,
charging
refrigerant
and checking
operation
Need exclusive one to prevent mixture of R-22 refrigerant oil use and
also the measurement is not available due to high pressure
Refrigerant
charging hose
Need exclusive one since there is risk of refrigerant leakage or
contamination
Vacuum pump Pipe drying
Compatible (Use products which contain the check valve to prevent
the oil from owing backward into the outdoor unit.) Use the one
that can be vacuumed up to -100.7kpa(5Torr).
Scale for
refrigerant
charging
Compatible
Gas leak detector Gas leak test Need exclusive one
(Ones used for R-134a is compatible)
Flare nut Must use the are nut supplied with the product. Refrigerant leakage may occur when the conventional are
nut for R-22 is used.
ENGLISH-20
Refrigerant pipe installation
Selecting refrigerant pipe
Increase the
main pipe size
Y-joint
f Install the refrigerant pipe according to main pipe size of each outdoor unit capacity.
f When the pipe length (including elbow) between the outdoor unit and the farthest indoor unit exceeds 90m, the size of
the pipe (main pipe) connecting the outdoor unit to the rst branch joint must be increased by one grade.
f For HR System, when the pipe length (including elbow) between an outdoor unit and the farthest indoor unit exceeds 90
m, you must increase the size of the liquid pipe by one grade among the pipes(main pipe) which connects between the
outdoor unit to the rst branch joint
H/P
(A)
(B)
22.4 kW 22.4 kW
(D)
(E)
(C)
(3)
(2)
(1)
56.0 kW Ex.) 100.8 kW
Outdoor unit
capacity (kW) No. Pipe size (mm)
Liquid pipe Gas pipe
22.4 (1) 9.52 19.05
44.8 (2) 12.70 28.58
100.8 (3) 19.05 41.28
Size of the pipe connected to the outdoor unit (A)
Select the size of the pipe according to the below table.
Outdoor unit capacity (kW)
(Cooling)
Maximum pipe length within 90m Maximum pipe length over 90m
Liquid pipe (mm) Gas pipe (mm) Liquid pipe (mm) Gas pipe (mm)
22.4kW Ø 9.52 Ø 19.05 Ø 12.70 Ø 22.22
28.0kW Ø 22.22 Ø 25.40 note1)
33.6kW Ø 12.70
Ø 28.58
Ø 15.88 Ø 28.58
44.8kW
50.4kW
Ø 15.88 Ø 19.05 Ø 31.75 note2)
56.0kW
61.6kW
67.2kW
ENGLISH-21
02 INSTALLING THE PRODUCT
Outdoor unit capacity (kW)
(Cooling)
Maximum pipe length within 90m Maximum pipe length over 90m
Liquid pipe (mm) Gas pipe (mm) Liquid pipe (mm) Gas pipe (mm)
72.8kW ~ 84.0kW
Ø 19.05
Ø 34.92
Ø 22.22
Ø 38.10 note3)
89.6kW ~ 95.2kW
100.8kW
Ø 41.28 Ø 41.28
106.4kW ~ 134.4kW
140.0kW ~ 168.0kW
Ø 53.98173.6 kW ~ 252.0 kW Φ 22.22 Ø 53.98 Ø 25.40 note1)
274.4 kW ~ 336.0 kW Φ 25.40
❋ Maximum pipe length : The pipe length between an outdoor unit and the farthest indoor unit.
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
Note2) If Ø 31.75 pipe is not available on site, use Ø 34.92 pipe.
Note3) If Ø 38.10 pipe is not available on site, use Ø 41.28 pipe
ÚFor the case that the diameter of the default pipe of an outdoor unit does not match that of the pipe installed on the site,
a socket is provided by default together with the outdoor unit.
Size of the pipe between branch joints (B)
Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch.
ÚHowever, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor
unit (A), apply the pipe size (A).
Indoor unit capacity (kW)
Branch pipe length within 45m Branch pipe length between 45~90m
Liquid pipe (mm) Gas pipe (mm) Liquid pipe (mm) Gas pipe (mm)
15.0kW and below
Ø 9.52
Ø 15.88
Ø 12.70
Ø 19.05
15.1 kW ~ 22.4 kW Ø 19.05 Ø 22.22
22.5 kW ~ 28.1 kW Ø 22.22 Ø 25.40 note1)
28.2 kW ~ 40.0 kW Ø 12.70 Ø 28.58 Ø 15.88 Ø 28.58
40.1 kW ~ 45.0 kW Ø 31.75 note2)
45.1 kW ~ 63.3 kW Ø 15.88 Ø 19.05
63.4 kW ~ 70.3 kW Ø 34.92 Ø 38.10 note3)
70.4 kW ~ 98.4 kW
Ø 19.05 Ø 22.2298.5 kW ~ 135.2 kW Ø 41.28 Ø 41.28
135.3 kW ~ 169.0 kW
Ø 53.98
169.0 kW ~ 275.0 kW Ø 22.22 Ø 53.98 Ø 25.40 note1)
Over 275.0 kW Ø 25.40
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
Note2) If Ø 31.75 pipe is not available on site, use Ø 34.92 pipe.
Note3) If Ø 38.10 pipe is not available on site, use Ø 41.28 pipe
ENGLISH-22
Refrigerant pipe installation
Size of the pipe between the branch joint and the indoor unit
Make a selection according to outdoor unit capacity.
Indoor unit capacity (kW) Pipe size (O.D. mm)
Liquid pipe Gas pipe
6.0kW and below Ø 6.35 Ø 12.70
6.1 kW ~ 16.0 kW Ø 9.52 Ø 15.88
16.1 kW ~ 23.0 kW Ø 9.52 Ø 19.05
Over 23.0kW Ø 9.52 Ø 22.22
Branch joint
f Branch joint between outdoor units (C)
Classication Model name Specication (kW)
Y-joint for outdoor unit (C) MXJ-TA3419M 134.4kW and below
MXJ-TA4122M 140.0 kW and over
f First branch joint (D)
Make a selection according to outdoor unit capacity.
Classication Outdoor unit capacity (kW) Model name of the branch joint
Y-joint (D)
33.6kW and below MXJ-YA2512M
44.8kW MXJ-YA2812M
50.4 kW ~ 67.2 kW MXJ-YA2815M
72.8kW ~ 95.2kW MXJ-YA3419M
100.8kW ~ 134.4kW MXJ-YA4119M
140.0kW and over MXJ-YA4422M
f Branch joint (E)
Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch.
ÚHowever, if the size of the pipe between branch joints (E) is bigger than the size of the pipe connected to the outdoor unit
(D), apply the pipe size (D).
1) Y-joint
Classication Model name Specication (kW)
Y-joint (E)
MXJ-YA1509M 15.0kW and below
MXJ-YA2512M Over 15.0kW ~ 40.0kW and below
MXJ-YA2812M Over 40.0kW ~ 45.0kW and below
MXJ-YA2815M Over 45.0kW ~ 70.3kW and below
MXJ-YA3419M Over 70.3kW ~ 98.4kW and below
MXJ-YA4119M Over 98.4kW ~ 135.2kW and below
MXJ-YA4422M Over 135.2kW
2) Distribution header
Classication Model name Specication (kW)
Distribution header (E)
MXJ-HA2512M 45.0kW and below (for 4 rooms)
MXJ-HA3115M 70.3kW and below (for 8 rooms)
MXJ-HA3819M Over 70.3kW (for 8 rooms)
ENGLISH-23
02 INSTALLING THE PRODUCT
H/R
(A)
(B)
(D)
(E)
(C)
(3)
(2)
(1)
(F)
22.4 kW 22.4 kW 56.0 kW Ex.) 100.8 kW
Outdoor unit
capacity (kW) No.
Pipe size (mm)
Liquid pipe Low pressure gas
pipe
High pressure
gas pipe
22.4 (1) 9.52 19.05 15.88
44.8 (2) 12.70 28.58 41.28
100.8 (3) 19.05 41.28 34.92
Size of the pipe connected to the outdoor unit (A)
Select the size of the pipe according to the below table.
Outdoor unit capacity
(kW)
(Cooling)
Maximum pipe length within 90m Maximum pipe length over 90m
Liquid pipe
(mm)
Low pressure
gas pipe (mm)
High pressure
gas pipe (mm)
Liquid pipe
(mm)
Low pressure
gas pipe (mm)
High pressure
gas pipe (mm)
22.4kW
Ø 9.52
Ø 19.05 Ø 15.88
Ø 12.70
Ø 19.05 Ø 15.88
28.0kW Ø 22.22
Ø 19.05
Ø 22.22
Ø 19.05
33.6kW
Ø 12.70
Ø 28.58
Ø 15.88
Ø 28.58
44.8kW
Ø 22.22 Ø 22.22
50.4kW
Ø 15.88 Ø 19.05
56.0kW
Ø 28.58 Ø 28.58
61.6kW
67.2kW
72.8kW ~ 84.0kW
Ø 19.05
Ø 34.92
Ø 22.22
Ø 34.92
89.6kW ~ 95.2kW
100.8kW
Ø 41.28 Ø 34.92 Ø 41.28 Ø 34.92106.4kW ~ 134.4kW
140.0kW ~ 168.0kW
173.6 kW ~ 252.0 kW Ø 22.22 Ø 53.98 Ø 41.28 Ø 25.40 Ø 53.98 Ø 41.28
274.4 kW ~ 336.0 kW Ø 25.40
*Maximum pipe length : The pipe length between an outdoor unit and the farthest indoor unit.
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
ÚFor HR model, only increase the size of the liquid pipe If pipe length exceeds 90m
ÚFor the case that the diameter of the default pipe of an outdoor unit does not match that of the pipe installed on the site,
a socket is provided by default together with the outdoor unit.
ENGLISH-24
Refrigerant pipe installation
Size of the pipe between branch joints (B)
Select the pipe size according to the sum of indoor unit capacity which will be connected after the branch.
ÚHowever, if the size of the pipe between branch joints (B) is bigger than the size of the pipe connected to the outdoor
unit (A), apply the pipe size (A).
If the pipe length from the rst branch joint to the farthest indoor unit is 45 m to 90 m, increase the sizes of the liquid pipe
and low pressure gas pipe according to the table below.
- When the Heat Pump is installed: The liquid pipe and low pressure gas pipe from the rst branch joint to the branch joint of
the farthest indoor unit (Refer to page 40.)
- When the Heat Recovery is installed (combination of branch joints and MCU): The liquid pipe and low pressure gas pipe
from the rst branch joint to the MCU (Refer to page 42.)
Indoor unit capacity (kW)
(Cooling)
Pipe size (mm) Branch pipe length between 45~90m
Liquid pipe Low pressure
gas pipe
High pressure
gas pipe
Liquid
pipe(mm)
Low
pressure gas
pipe(mm)
High
pressure gas
pipe(mm)
15.0 kW and below
Ø 9.52
Ø 15.88 Ø 15.88 Ø 12.70
Ø 19.05 Ø 15.88
15.1 kW ~ 22.4 kW Ø 19.05 Ø 22.22
22.5 kW ~ 28.1 kW Ø 22.22 Ø 19.05 Ø 25.40 note1)
Ø 19.05
28.2 kW ~ 33.6 kW
Ø 12.70
Ø 28.58
Ø 15.88 Ø 28.58
33.7 kW ~ 40.0 kW
Ø 22.22 Ø 22.2240.1 kW ~ 45.0 kW
Ø 31.75 note2)
45.1 kW ~ 50.4 kW
Ø 15.88 Ø 19.0550.5 kW ~ 63.3 kW
Ø 28.58 Ø 28.5863.4 kW ~ 70.3 kW Ø 34.92 Ø 38.10 note3)
70.4 kW ~ 98.4 kW
Ø 19.05 Ø 22.2298.5 kW ~ 135.2 kW Ø 41.28 Ø 34.92 Ø 41.28 Ø 34.92
135.3 kW ~ 169.0 kW
Ø 53.98
169.0 kW ~ 275.0 kW Ø 22.22 Ø 53.98 Ø 41.28 Ø 25.4 note1)
Ø 41.28
Over 275.0 kW Ø 25.40 Ø 28.58
Note1) If Ø 25.40 pipe is not available on site, use Ø 28.58 pipe.
Note2) If Ø 31.75 pipe is not available on site, use Ø 34.92 pipe..
Note3) If Ø 38.10 pipe is not available on site, use Ø 41.28 pipe
Size of the pipe between the branch joint and indoor unit
Make a selection according to outdoor unit capacity.
Indoor unit capacity (kW) Pipe size (O.D. mm)
Liquid pipe Gas pipe
6.0kW and below Ø 6.35 Ø 12.70
6.1 kW ~ 16.0 kW Ø 9.52 Ø 15.88
16.1 kW ~ 23.0 kW Ø 9.52 Ø 19.05
Over 23.0kW Ø 9.52 Ø 22.22
ENGLISH-25
02 INSTALLING THE PRODUCT
Branch joint
f Branch joint between outdoor units (C)
Classication Model name Specication (kW)
Liquid/Low pressure Y-joint (C) MXJ-TA3419M 134.4kW and below
MXJ-TA4122M 140.0kW and over
High pressure Y-joint (C) MXJ-TA3100M 134.4kW and below
MXJ-TA3800M 140.0kW and over
f First branch joint (D)
Make a selection according to outdoor unit capacity.
Classication Outdoor unit capacity (kW) Model name of the branch joint
Liquid/Low pressure Y-joint (D)
33.6kW and below MXJ-YA2512M
44.8kW MXJ-YA2812M
50.4kW ~ 67.2kW MXJ-YA2815M
72.8kW ~ 95.2kW MXJ-YA3419M
100.8kW ~ 134.4kW MXJ-YA4119M
140.0kW and over MXJ-YA4422M
High pressure Y-joint (D)
22.4kW MXJ-YA1500M
28.0kW ~ 67.2kW MXJ-YA2500M
72.8kW ~ 134.4kW MXJ-YA3100M
140.0kW and over MXJ-YA3800M
f Branch joint (E)
Select a branch joint according to the sum of indoor unit capacity which will be connected after the branch.
ÚHowever, if the size of the pipe between branch joints (E) is bigger than the size of the pipe connected to the outdoor unit
(D), apply the pipe size (D).
• Y-joint
Classication Model name Specication (kW)
Y-joint (E)
MXJ-YA1509M 15.0kW and below
MXJ-YA2512M Over 15.0kW ~ 40.0kW and below
MXJ-YA2812M Over 40.0kW ~ 45.0kW and below
MXJ-YA2815M Over 45.0kW ~ 70.3kW and below
MXJ-YA3419M Over 70.3kW ~ 98.4kW and below
MXJ-YA4119M Over 98.4kW ~ 135.2kW and below
MXJ-YA4422M Over 135.2kW
Y-joint (E)
(Only H/R)
MXJ-YA1500M 22.4kW and below
MXJ-YA2500M Over 22.4kW ~ 70.3kW and below
MXJ-YA3100M Over 70.3kW ~ 135.2kW and below
MXJ-YA3800M Over 135.2kW
ENGLISH-26
Refrigerant pipe installation
Additional refrigerant
H/P HR
Ø15.88 (5 m)
Ø15.88 (5 m)
Ø12.7 (5 m)
Ø9.52 (5 m)
Ø9.52 (10 m)
Ø9.52 (15 m)
Ø9.52 (10 m)
Ø9.52 (10 m)
Ø9.52 (10 m)
Ø9.52 (10 m)
Ø6.35 (5 m)
Ø12.7 (10 m)
56.0 kW
20 HP
7.1 kW
7.1 kW
7.1 kW
9.0 kW 7.1 kW
7.1 kW
7.1 kW
3.6 kW
Ø9.52 (1 m)
Ø12.70 (5 m)
Ø15.88 (10 m)
Ø12.70 (10 m)
Ø9.52 (15 m)
Ø9.52 (10 m)
Ø12.70 (10 m)
Ø9.52 (18 m)
Ø9.52 (18 m)
Ø9.52
(25 m)
Ø9.52 (15 m)
Ø9.52
(10 m)
MCU MCU
Ø6.35 (2 m)
3.6 kW
7.1 kW
11.2 kW
7.1 kW
11.2 kW
7.1 kW
7.1 kW
7.1 kW
Ø6.35 (15 m)
61.6 kW
10 HP12 HP
ENGLISH-27
02 INSTALLING THE PRODUCT
Refrigerant pipe installation
f Basic amount of refrigerant inside the outdoor unit (kg)
- Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe lengths.
Classication AM080FXWA✴✴ AM100FXWA✴✴ AM120FXWA✴✴ AM200FXWA✴✴ AM300KXWA✴✴
Basic amount 5.5 5.8 6.0 9.8 11
f Amount of additional refrigerant depends on the pipe size (ⓐ)
- Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length.
Size of liquid pipe (mm) 6.35 9.52 12.70 15.88 19.05 22.22 25.40 28.58
Additional amount (kg/m) 0.02 0.06 0.125 0.18 0.27 0.35 0.53 0.65
- For the indoor unit already connected to EEV kit, the additional refrigerant charging is 0.01kg per meter regardless of
the pipe size.
f Amount of additional refrigerant for each indoor unit ( )
(Unit : kg)
Capacity (kW)
Model 1 .5 1 .7 2 .2 2 .8 3 .2 3 .6 4 .5 5 .6 6 7 .1 8 .2 9 9.3 11 .2 12 .8 14 16 18 22 22 .4 28 32 50 500
CMH
1000
CMH
Slim 1way
cassette (JSF)
(AM✴✴✴FN1DE✴✴)
(AM✴✴✴JN1DE✴✴)
0 .25 0 .25 0 .25 0 .32 0 .32
Interior 1way cassette
(AM✴✴✴HN1DE✴✴)
0 .15 0 .15
2way cassette
(AM✴✴✴FN2DE✴✴)
0 .31 0 .47
4Way Casette S
(AM✴✴✴FN4DE✴✴)
0 .45 0 .45 0 .45 0 .45 0 .57 0 .69 0 .69
360 Casette
(AM✴✴✴KN4DE✴✴)
0 .45 0 .45 0 .45 0 .45 0 .69 0 .69 0 .69
Floor Standing Unit
(AM✴✴✴✴NFDE✴✴)
0 .22 0 .32 0 .32
ERV plus
(AM✴✴✴FNKDE✴✴)
0 .11 0 .36
4way cassette S
(600 X 600)
(AM✴✴✴FNNDE✴✴)
0 .29 0 .29 0 .29 0 .29 0 .37 0 .37 0 .37
Duct S
(AM✴✴✴✴HNMPK✴/✴)0 .22 0 .22 0 .22 0 .22 0 .31 0 .38 0 .38 0 .38
Duct S
(AM✴✴✴HNMPK✴9✴)
0 .31 0 .31 0 .38 0 .38 0 .38
Duct S
(AM✴✴✴HNHPK✴/✴)
0 .38 0 .38 0 .38
Slim duct
(AM✴✴✴FNLDE✴✴)
0 .17 0 .17 0 .17 0 .26 0 .35 0 .35 0 .45 0 .42 0 .42 0 .62 0 .62
Slim duct
(with drain pump)
(AM✴✴✴KNLDE✴✴)
0 .35 0 .35 0 .45 0 .42 0 .42 0 .62 0 .62
MSP duct
(AM✴✴✴✴NMDE✴✴)
0 .24 0 .24 0 .24 0 .28 0 .28 0 .28 0 .32 0 .54 0 .68 0 .68 0 .91
ENGLISH-28
Capacity (kW)
Model 1 .5 1 .7 2 .2 2 .8 3 .2 3 .6 4 .5 5 .6 6 7 .1 8 .2 9 9.3 11 .2 12 .8 14 16 18 22 22 .4 28 32 50 500
CMH
1000
CMH
MSP duct
(with drain pump)
(AM✴✴✴KNMDE✴✴)
0 .24 0 .24 0 .24 0 .28 0 .28 0 .28 0 .32 0 .54 0 .68 0 .68 0 .91
Home Duct
(AM✴✴✴KNLDEH)
0.13 0.13 0.13 0.17
Ceiling
(AM✴✴✴FNCDE✴✴/
AM✴✴✴JNCDK✴✴)
0 .39 0 .39 0 .56 0 .95
Console
(AM✴✴✴✴NJDE✴✴)
0 .16 0 .27 0 .27 0 .27 0 .27
Neo forte
(AM✴✴✴FNTDE✴✴)
0 .24 0 .24 0 .24 0 .24 0 .36 0 .36
Neo forte (with EEV)
(AM✴✴✴FNQDE✴✴)
0 .34 0 .34 0 .34 0 .34 0 .51 0 .51 0 .51
AR5000
(AM✴✴✴JNADK✴✴)
0 .16 0 .16 0 .19 0 .25 0 .25 0 .52 0 .52 0 .52
AR5000 (with EEV)
(AM✴✴✴JNVDK✴✴)
0 .22 0 .22 0 .25 0 .34 0 .34 0 .71 0 .71 0 .71
New Boracay
(AM✴✴✴KNTDE✴✴)
0.24 0.24 0.32 0.32 0.49 0.49 0.49
New Boracay
(with EEV)
(AM✴✴✴KNQDE✴✴)
0.24 0.24 0.32 0.32 0.49 0.49 0.49
MAX 4
(AM✴✴✴MNQDE✴✴)
0.49
HSP duct
(AM✴✴✴FNHDE✴✴)
0 .68 0 .68 0 .68 1 .18 1 .18
OAP duct
(AM✴✴✴JNEPE✴✴)
0 .68 1 .18 1 .18
Big duct
(AM✴✴✴JNHFK✴✴)
1 .15 1 .15
PAC
(AM✴✴✴JNPD✴✴)
0.73 1.85
Hydro Unit HE
(AM✴✴✴FNBD✴✴)
0.6 0.7 1.2
Hydro Unit HT
(AM✴✴✴FNBF✴✴)
0.6 note1)
MCU
(MCU-S✴NE✴✴N)
0.5
f If AHU kit is included among the indoor units, you must add 0.063 kg of refrigerant for every 1 kW of the AHU capacity
increase.
Note1) In case the capacity conjunction of the Hydro Unit HT exceeds 50 % among the total indoor unit, please don’t put the
additional refrigerant.
Refrigerant pipe installation
ENGLISH-29
02 INSTALLING THE PRODUCT
f Method to calculate the total amount of additional refrigerant
- Amount of additional refrigerant depends on the pipe length (ⓐ)
- Amount of additional refrigerant for each indoor unit (ⓑ) = ∑(Amount of additional refrigerant for each connected
indoor unit) ❇ Refer to the table
- Total amount of additional refrigerant = ⓐ+ⓑ
❋ Sum of total amount of additional refrigerant and the basic amount of refrigerant should not exceed 100 kg. If the
refrigerant exceeds 100kg, separate the module so that the weight of the refrigerant doesn't exceed 100 kg.
Ex.) For AM200FXWA✴✴, basic amount of refrigerant is 9.8 kg, therefore total amount of additional refrigerant (ⓐ+ⓑ)
should not exceed 90.2kg.
f Example of refrigerant calculation for H/P System
Classication Size of liquid pipe Length (m) Unit amount of
refrigerant (kg/m)
Amount of
additional
refrigerant (kg)
Total amount
of additional
refrigerant (kg)
①②①×②∑(①×②)
Liquid pipe (ⓐ)
6.35 5 0.02 0.1
ⓐ 7.975
9.52 70 0.06 4.2
12.70 15 0.125 1.875
15.88 10 0.18 1.8
Classication Model name of
indoor unit
Number of units Unit amount of
refrigerant (kg/EA)
Amount of
additional
refrigerant (kg)
Total amount
of additional
refrigerant (kg)
①②①×②∑(①×②)
Indoor unit (ⓑ)
4way cassette
(AM071FN4DEH✴)30.451.35
ⓑ 3.4
4way cassette
(AM090FN4DEH✴)10.450.45
Slim duct
(AM071FNLDEH✴)30.451.35
1way cassette
(AM036FN1DEH✴)10.250.25
- Total amount of refrigerant (ⓐ+ⓑ) = 7.975+3.4=11.375 (kg)
f Example of refrigerant calculation for HR System
Classication Size of liquid pipe
Length (m) Unit amount of
refrigerant (kg/m)
Amount of
additional
refrigerant (kg)
Total amount
of additional
refrigerant (kg)
①②①×②∑(①×②)
Liquid pipe (ⓐ)
6.35 15 0.02 0.3
ⓐ 11.965
9.52 112 0.06 6.72
12.70 25 0.125 3.125
15.88 10 0.18 1.8
6.35
(EEV Kit ~ indoor
unit)
20.010.02
ENGLISH-30
Refrigerant pipe installation
Classication Model name of
indoor unit
Number of units Unit amount of
refrigerant (kg/EA)
Amount of
additional
refrigerant (kg)
Total amount
of additional
refrigerant (kg)
①②①×②∑(①×②)
Indoor unit (ⓑ)
4way cassette
(AM071FN4DEH✴)50.452.25
ⓑ 4.63
4way cassette
(AM112FN4DEH✴)20.571.14
Neo Forte
(AM036FNTDEH✴)10.240.24
MCU 2 0.5 1
- Total amount of refrigerant (ⓐ+ⓑ) = 11.965+4.63 = 16.595 (kg)
Temper grade and minimum thickness of the refrigerant pipe
Outer diameter (mm) Minimum thickness (mm) Temper grade
6.35 0.70
Annealed
9.52 0.70
12.70 0.80
15.88 1.00
19.05 0.90
Drawn
22.22 0.90
25.40 1.00
28.58 1.10
31.75 1.10
34.92 1.21
38.10 1.35
41.28 1.43
44.45 1.60
50.80 2.00
53.98 2.10
• For pipes larger than Ø 19.05, drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be used. If a
annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure resistance and cause
personal injury.
CAUTION
ENGLISH-31
02 INSTALLING THE PRODUCT
Keeping refrigerant pipe
To prevent foreign materials or water from entering the pipe, storing method and sealing method (especially during
installation)is very important. Apply correct sealing method depending on the environment.
Exposure place Exposure time Sealing type
Outdoor
Longer than one month Pipe pinch
Shorter than one month Taping
Indoor - Taping
Refrigerant pipe welding and safety information
Important information for refrigerant pipe work
• Make sure there is no moisture inside the pipe.
• Make sure there are no foreign substances and impurities in the pipe.
• Make sure there is no leakage.
• Make sure to follow the instruction when welding or storing the pipe.
CAUTION
Nitrogen ushing welding
f When welding the refrigerant pipes, ush them with nitrogen gas as shown in the picture.
f If you do not perform nitrogen ushing when welding the pipes, oxide may form inside the pipe. It can cause the
damage of the important parts such as compressor and valves etc.
f Adjust the ow rate of the nitrogen ushing with a pressure regulator to maintain 0.05m3/h or less.
Welding part
Nitrogen gas
Ø 6.35 copper pipe
Stop valve
Taping
High pressure hose
Pressure regulator
Nitrogen gas
Flowmeter
Direction of the pipe when welding
f Direction of the pipe should be headed downward or in a sideways when welding.
f Avoid welding the pipe with pipe direction heading upward.
• When you test gas leakage after welding the pipes, use a designated solution for gas leakage detection. If you
use the detection solution that includes sulfuric ingredient, it may cause corrosion to the pipes.
CAUTION
ENGLISH-32
Refrigerant pipe installation
Cutting or aring the pipes
1. Make sure that you prepared the required tools.
f Pipe cutter, Deburring tool, aring tool and pipe holder, etc.
2. If you want to shorten the pipe, cut it with a pipe cutter ensuring that the cut edge remains at 90° with the side of the
pipe.
f Refer to below illustrations for correct and incorrect examples of cut edges.
90° Oblique Rough Burr
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a Deburring tool.
4. Carry out aring work using aring tool as shown below.
A
Flaring bar
Pipe
Yoke
Flaring bar
Pipe
Flare nut
Clutch type Wing nut type
[Flaring tools]
Pipe diameter
[D (mm)]
Depth of aring part [A (mm)]
Using aring tool for
R-410A
Using conventional aring tool
Clutch type Wing nut type
Ø 6.35 0~0.5 1.0~1.5 1.5~2.0
Ø 9.52 0~0.5 1.0~1.5 1.5~2.0
Ø 12.70 0~0.5 1.0~1.5 1.5~2.0
Ø 15.88 0~0.5 1.0~1.5 1.5~2.0
5. Check that you ared the pipe correctly.
f Refer to below illustrations for correct and incorrect examples of ared pipe.
Uneven ThicknessCrackedDamaged SurfaceInclinedCorrect
• If foreign matters or burrs are not removed after cutting pipe, refrigerant gas may leak.
• If foreign matters enter inside the pipe, important interior parts of the unit may get damaged or product
eciency will be reduced. So, the direction of pipe should be downward during pipe cutting or aring.
CAUTION
ENGLISH-33
02 INSTALLING THE PRODUCT
Connecting the ared pipes
f Check if the aring is properly done according to the standard size.
f Align the center of the piping and tighten the are nut with your hands. Then, tighten the are nut with torque wrench in
a direction of the arrow indicated in below illustration.
f Make sure to use ester oil to coat the are connection section.
Flare connection section Flare nut
Pipe
Monkey wrench
Torque wrench
Outer diameter (D, mm) Connection torque (N·m) Flare dimension (L, mm) Flare shape (mm)
Ø 6.35 14~18 8.7~9.1
90° ±2°
45° ±2°
R 0.4~0.8
L
D
Ø 9.52 34~42 12.8~13.2
Ø 12.70 49~61 16.2~16.6
Ø 15.88 68~82 19.3~19.7
Ø 19.05 100~120 23.6~24.0
Ú 1 N•m = 10 kgf•cm
• Blowing Nitrogen gas should be done when welding the pipe.
• Make sure to use the provided are nut.
• Make sure that there are no cracks or twisted part when you need to bend the pipe.
• Do not fasten the are nut with excessive strength.
• R-410A is a high pressure refrigerant and there is a risk of refrigerant leakage if the are connection is not coated
with ester oil. Therefore, apply ester oil to coat the are connection area.
CAUTION
ENGLISH-34
Refrigerant pipe installation
Pipe installation for an outdoor unit
1. Please read the following instructions to connect the refrigerant pipe to an outdoor unit.
- For H/P System, connect liquid and gas pipes to an indoor unit.
- For HR System, connect liquid and high/low pressure gas pipes to a MCU. Close the internal heat pump valve and set
the following option switch.
- For module installation, make sure that each heat pump valve and the following option switch setting is adjusted
according to each purpose. (When installing outdoor units in module, E573 error may occur when settings are dierent
between outdoor units.)
Classication H/P System HR System
Service valve
Liquid pipe
High pressure gas pipe
Not in use
(Low pressure gas
pipe)
Heat pump valve
(Open)
Liquid pipe
High pressure gas pipe
Low pressure gas pipe
Heat pump valve
(Close)
Heat pump valve Open (Factory default) Close (Set during installation)
Option
switch
A Type PBA (K5)
ON (Factoty default) OFF (Set during installation)
B Type PBA Key
mode (K1+K2)
Set as "ht 00" (Factory default) Set as "ht 01" (Set during installation)
Ú Refer to the outdoor unit key function option switch and key function (page 71, 72)
Caution for welding the pipe to an outdoor unit
• When welding the pipe, the unit may get damaged by the heat and ame from welding. Use a ame proong
cloth to protect the unit from a brazing re or ame.
• The O-ring and Teon packing inside service valve may get damaged by the heat from welding. Wrap the
bottom side of the service valve with a wet cloth and weld it. Also, water dripping from the wet cloth may
interrupt the welding. Make sure the water does not drip from the wet cloth.
• Make sure that connected pipes does not interrupt each other or make contact with the product. If they contact
each other or contact with the outdoor unit, vibration will occur and it may cause damage to the pipes.
• When removing the sealed pipe on the bottom side of the service valve, cut it with a pipe cutter rst and then
start the welding. When the sealed pipe is welded without cutting, you may get injured by the refrigerant within
the pipe.
CAUTION
ENGLISH-35
02 INSTALLING THE PRODUCT
1. Connect refrigerant pipes between outdoor units.
f To connect pipes between outdoor units, branch joints (that needs to be purchased separate) must be installed.
❋ For optimal distribution of the refrigerant, you must use Y-joint for connecting outdoor units. (Do not use
T-joint)
f When outdoor units are installed in module, there are no restrictions on the order of installation.
Caution Correct installation Incorrect installation
When refrigerant
pipe is installed
at higher level
than the pipe
connection part of
the outdoor unit,
you must install
a trap at the gas
pipe.
200 mm or more
Branch joint
between outdoor
units must
be installed
horizontally.
ENGLISH-36
Caution Correct installation Incorrect installation
When the piping
length between
outdoor unit and
the branch joint
exceeds 2 m,
install a vertical
trap as show in
the gure.
2 m or more
1 m or less
200~300 mm
2 m or more
Refrigerant pipe installation
ENGLISH-37
02 INSTALLING THE PRODUCT
Examples of refrigerant pipe installation
H/P
1. Using Y-joint
2. Using distribution header
HR
1. Using Y-joint
MCU
MCU
MCU
MCU
ENGLISH-38
Refrigerant pipe installation
Allowable length of the refrigerant pipe and the installation examples
H/P
Classication Single Installation Module installation
Installing only with
Y-joint
Branch joint
Outdoor unit
Indoor unit
Branch joint
Outdoor unit
Indoor unit
Installing with Y-joint
and distribution
header
Branch joint
Distribution header
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Distribution header
Branch joint
Installing only with
distribution header
Outdoor unit
Indoor unit
Distribution header
Outdoor unit
Indoor unit
Distribution header
ENGLISH-39
02 INSTALLING THE PRODUCT
Classication Example Remarks
Maximum
allowable
pipe length
Outdoor unit ~
Indoor unit
Actual pipe
length
(Equivalent
length)
170 m and
below (190
m and
below)
Installing only with
Y-joint
a+b+c+d+e+f+g+p ≤
170 (190) m Equivalent length
• Y-joint: 0.5 m
• Distribution
header: 1 m
Installing with
Y-joint and
distribution header
a+b+h ≤ 170 (190) m,
a+i+k ≤ 170 (190) m
Installing only with
distribution header a+i ≤ 170 (190) m
Total length
of pipe (m)
500 m or
less
Installing only with
Y-joint
a+b+c+d+e+f+g+p+h+
i+j+k+l+m+n ≤ 500 m
Installing with
Y-joint and
distribution header
a+b+c+d+e+f+g+h+
i+j+k ≤ 500 m
Installing only with
distribution header
a+b+c+d+e+f+g+h+i
≤ 500 m
Outdoor unit~
Outdoor unit
(Module
installation)
Pipe length 10 m or less r ≤ 10 m, s ≤ 10 m, t ≤ 10 m
Equivalent
length 13 m or less r ≤ 13 m, s ≤ 13 m, t ≤ 13 m
Height
dierence 1.5 m or less H5 ≤ 1.5 m
H5
200mm
or more
Maximum
allowable
height
dierence
Outdoor unit ~
Indoor unit 50/40 m Note 2) H1 ≤ 50/40 m
Indoor unit ~
Indoor unit 50 m or less H2 ≤ 50 m
Maximum
allowable
length after
branch joint
First branch
joint ~ Farthest
Indoor unit
Pipe length
45 m or less b+c+d+e+f+g+p ≤ 45 m, i ≤ 45 m
45 m ~ 90m
note 1)
Required conditions must be satised
EEV kit Model Remarks
EEV kit ~
Indoor unit
Actual pipe
length
2 m
MEV-E24SA
1 indooor
Apply to products without EEV
(Wall mount & ceiling)
MEV-E32SA
20 m or less
MXD-E24K132A
2 indooorMXD-E24K200A
MXD-E32K200A
MXD-E24K232A
3 indooor
MXD-E24K300A
MXD-E32K224A
MXD-E32K300A
❋ Please refer to the EEV Kit manual.
ENGLISH-40
Refrigerant pipe installation
Note 1) Required condition
Classication Condition Example
First branch joint ~
Farthest Indoor unit
45 m ≤ b+c+d+e+f+g+p ≤ 90 m: Size of the
branch pipe (b, c, d, e, f, g) must be increased by
one grade
Total length of
extended pipe
If the size of the main pipe (pipe that connects
between the outdoor unit ~ rst branch joint) was
not increased by one grade: a+(b+c+d+e+f+g)×2
+h+i+j+k+l+m+n+p ≤ 500 m
If the size of the main pipe (pipe that connects
between the outdoor unit ~ rst branch joint) was
increased by one grade: (a+b+c+d+e+f+g)×2
+h+i+j+k+l+m+n+p ≤ 500 m
Each Y-joint ~ Each
indoor unit h, i, j, … p ≤ 45 m
Dierence between the distance of the outdoor unit to the farthest indoor
unit and nearest indoor unit ≤ 45 m
(a+b+c+d+e+f+g+p)-(a+h) ≤ 45 m
Note 2) If an outdoor unit is located in a lower position than indoor unit, maximum level dierence is 40 m. If outdoor unit is
located in a higher position than indoor unit, level dierence is 50 m or under.
❋ Total refrigerant amount of the system must be less than 100 kg. If total refrigerant amount of system is
over than 100 kg, the system has to be divided into smaller system, each less than 100 kg.
ENGLISH-41
02 INSTALLING THE PRODUCT
H/R
Classication Installation with Y-joint
Installing with
MCU only
Installing with
MCU and Y-joint
MCUMCU
MCU
n
h
l
H4
H1 H2
H3
op
q
Cooling Only Indoor Unit
(Connecting Only Low Pressure Gas Pipe /
Liquid Pipe note3)
Classication Example Remarks
Maximum
allowable
pipe length
Outdoor unit ~
Indoor unit
Actual pipe
length
(Equivalent
length)
170 m or
less (190 m
or less)
Installing only with
MCU a+g+j ≤ 170 m (190 m)
Equivalent length
• Y-joint: 0.5m
• Distribution header: 1m
• MCU: 1 m
Installing with
MCU and Y-joint
a+b+h+k ≤ 170 m (190 m)
Total length
of pipe
500 m or
less
Installing only with
MCU
a+b+c+d+e+f+g+h+i+j ≤ 500 m
Installing with
MCU and Y-joint
a+b+c+d+e+f+g+p+h+i+j+k+m+
n+o+p+q ≤ 500 m
Outdoor unit~
Outdoor unit
(Module
installation)
Pipe
length
10 m or
less r ≤ 10 m, s ≤ 10 m, t ≤ 10 m
Equivalent
length
13 m or
less r ≤ 13 m, s ≤ 13 m, t ≤ 13 m
Height
dierence
1.5 m or
less H5 ≤ 1.5 m
H5
200mm
or more
MCU ~ Indoor
unit Pipe length 45 m or
less
Installing only with
MCU
b+c ≤ 45 m, b+d ≤ 45 m, b+e ≤ 45 m,
f≤ 45 m, g+h ≤ 45 m, g+i ≤ 45 m,
g+j ≤ 45 m
Installing with
MCU and Y-joint
c+d ≤ 45 m, c+e ≤ 45 m, c+f ≤ 45 m, g ≤ 45 m,
h+i ≤ 45 m, h+j ≤ 45 m, h+k ≤ 45 m, m ≤ 45 m,
n ≤ 45 m, o ≤ 45 m, p ≤ 45 m
ENGLISH-42
Classication Example Remarks
Maximum
allowable
height
dierence
Outdoor unit ~
Indoor unit
Pipe length
50 m /40 m
Note 1) H1 ≤ 50 m / 40 m
Indoor unit ~
Indoor unit 40 m or less H2 ≤ 40 m
Indoor unit ~
Indoor unit
(in one MCU)
15 m or less H3 ≤ 15 m
But, when AM✴✴✴✴NQDEH✴ / AM✴✴✴JNV✴ is installed, H2
is 15 m or less.
MCU ~ MCU 30 m or less H4 ≤ 30 m
Maximum
allowable
length after
branch joint
First branch
joint ~ Farthest
Indoor unit
Pipe length
45m or less Installing only with
MCU g+j ≤ 45 m
45 ~ 90 m
Note 2)
Installing with
MCU and Y-joint
b+h+k ≤ 45 m
l+p ≤ 45 m
Required conditions must be
satised
Distribution kit Model Remarks
From distribution kit
to indoor unit Actual pipe length 2 m or less MEV-24SA (For 1 indoor unit) Applied to products without EEV
(wall-mounted)
Note 1) If an outdoor unit is located in a lower position than indoor unit, maximum level dierence is 40 m. If outdoor unit is
located in a higher position than indoor unit, level dierence is 50 m or under.
❋ Total refrigerant amount of the system must be less than 100 kg. If total refrigerant amount of system is
over than 100 kg, the system has to be divided into smaller system, each less than 100 kg.
Note 2) Required condition
Classication Condition Example
First branch joint ~
Farthest Indoor unit
45 m ≤ b, l+m, q ≤ 90 m: Size of the branch pipe (b,
l, m, q) must be increased by 1 grade.
MCU
MCU
MCU
MCU
n
h
m
l
op
qr
Condition of total
length of extended
pipe
a+(bx2) + c + d + e + f + g + h + I + j + k + l + m +
n + o + p + q + r ≤ 500
MCU ~ Each indoor unit
c + d, c + e, c + f, g, h + I, h + j, h + k, n, o, p, r ≤ 45
Dierence between the distance of the outdoor unit to the farthest indoor
unit and nearest indoor unit ≤ 45 (a+b+h+k) - (a+b+c+d) ≤ 45
ÚIf the Y-joint and the MCU are installed together and the pipe length from the rst branch
joint to the farthest indoor unit is 45 m to 90 m, increase by one level the sizes of the liquid pipe and low pressure gas
pipe from the rst Y-joint to the MCU.
Refer to Size of the pipe between branch joints (B) on page 24.
Note 3) For indoor units to which no MCU is connected, be sure to set their options to “Cooling only indoor unit,” and then
connect them to a low pressure gas pipe and a liquid pipe. Be sure to combine the cooling only indoor units so that
their total capacity becomes 50% or less of the total capacity of all indoor units.
Note 4) In case of connecting more than one indoor unit in one MCU Port, the below indoor units can not be combined.
ERV plus (AM✴✴✴FNKDE✴✴), OAP duct(AM✴✴✴✴NEPE✴✴), Hydro Unit HE(AM✴✴✴FNBD✴✴), Hydro Unit
HT(AM✴✴✴FNBF✴✴), AHU kit (MXD-K✴✴✴AN, MCM-D✴✴✴N)
Note 5) In case of connecting two MCU ports with Y-joint, the indoor units can not be combined to more than one.
Refrigerant pipe installation
ENGLISH-43
02 INSTALLING THE PRODUCT
Installing the branch joints
Branch joints must be installed ‘horizontally’ or ‘vertically’.
Horizontal installation
Vertical installation
• Cut the connection part of the branch joint or the provided socket, according to the diameter of the connection
pipe, before connecting them.
Over 10~15mm
NOTE
• Install the branch joint within ±15° of the horizon or vertical line.
• Make sure that the pipe is not bent at where it is connected to the branch joint.
• Keep a minimum straight line distance of 500mm or more before connecting branch joint.
❋ Install within ±15° of the horizon or vertical line.
Minimum straight line
(over 500mm)
Pipe (Main pipe)
Connect to
indoor unit
Pipe
Before branching
After branching
After branching
Gas side/Liquid side branch joint
Pipe connection
Socket
Connect to other branch joint or indoor unit
Socket
CAUTION
ENGLISH-44
Refrigerant pipe installation
Installing the distribution header
1. Select the reducer that ts the diameter of the pipe.
<Gas side>
Socket
Pipe *
To indoor unit
Pipe*
Socket
To outdoor unit
<Liquid side>
Socket
Pipe*
To indoor unit
Pipe*
Socket
To outdoor unit
Provided item
❋ Pipe : Separately purchased item
2. If the number of connected indoor unit is fewer than ports on the distribution header, block the unused ports with caps.
<Liquid side>
Case of blocking the unused
distribution header ports
Connect in
order
Welding part
Provided item
<Gas side>
Case of blocking the unused
distribution header ports
Connect in
order
• Cut the provided socket, according to the diameter of the connection pipe, before connecting it.
Over 10~15mm
NOTE
• Connect the indoor units in order, while following the direction of the arrow shown in the illustration.
• When indoor units are connected to same distribution head, indoor unit must be connected in order of their
capacity, from largest to smallest.
CAUTION
ENGLISH-45
02 INSTALLING THE PRODUCT
Install the distribution header horizontally.
f Install the distribution header horizontally so that its ports do not face down.
Below ±10°
Horizon line
Socket Distribution header
Pipe
(Separately purchased item)
Below ±15°
Horizon line
Horizon line
< Liquid side >
Below ±15°
Horizon line
Below ±10°
Horizon line
< Gas side >
ENGLISH-46
Refrigerant pipe installation
Installing the branch joint between outdoor units
Installation of outdoor joints
Liquid pipe
High pressure gas pipe
Low pressure gas pipe Branch joint between outdoor units must
not be installed in vertical position.
❋ For HR System, connect liquid pipe, high pressure gas pipe and low pressure gas pipe.
❋ For H/P System, connect liquid pipe and high pressure gas pipe.
<Liquid pipe, High pressure gas pipe, Low pressure gas pipe>
Pipe
Liquid side socket
Liquid side socket
Pipe
Connect to other outdoor unit
❋ Use a provided liquid side socket according to the size of the selected
pipe.
Connect to other branch joint between
outdoor units or outdoor unit
Connect to other branch joint between outdoor units or
main pipe branch joint
• Cut the connection part of the outdoor unit connection pipe or the provided socket, according to the diameter
of the connection pipe, before connecting them.
Over 10~15 mm
NOTE
ENGLISH-47
02 INSTALLING THE PRODUCT
Installing the MCU
MCU specication
Model MCU-S6NEK2N MCU-S4NEK3N MCU-S2NEK2N MCU-S1NEK1N
Exterior of MCU
Number of
connectable indoor
units at one port
Up to 8 units Up to 8 units Up to 8 units Up to 8 units
The maximum
capacity of the
connectable indoor
units at one port
16 kW 16 kW 16 kW 16 kW
The maximum
capacity of the
connectable indoor
units
61.6 kW 61.6 kW 32.0 kW 16 kW
Internal EEV Not included
Installing the indoor unis
Model MCU-S6NEK2N MCU-S4NEK3N MCU-S2NEK2N MCU-S1NEK1N
Example installing
(Each port
connection)
Example installing
(MCU series
connection)
MCU MCU
MCU series connection
ENGLISH-48
Model MCU-S6NEK2N MCU-S4NEK3N MCU-S2NEK2N MCU-S1NEK1N
Installing indoor units
Under 16.0 kW indoor unit : Don’t use Y-connector
16.0 kW ~ 28.0 kW indoor unit : Use Y-connector at the Gas & Liquid line
In case of using Y-connector, it is only connectable for port combination at below
Connectable port combination for Y-connector : A + B port, C + D port, E + F port
Non-connectable port combination for Y-connector : B + C port, D + E port, non-
continuous port
Set Dip Switch option for using Y-connector
1
ON
234 1
ON
234 1
ON
234 1
ON
234
S/W Option S/W Option S/W Option S/W Option
Default Combination of
A+B port
Combination of
C+D port
Combination of
E+F port
In case of MCU connection in series, the maximum capacity of indoor units in MCU
series connection is 61.6 kW
This unit is only
connectable for one
port under 16 Kw
This unit is impossible
to connect MCU to
MCU in series.
How to connect the pipes
Pipe connection from outdoor unit
Default installing direction.
Pipe connection to indoor unit
Gas pipe (welding)
Liquid pipe (welding)
Protect with wet towel
when welding
70 mm
70 mm
Low pressure gas pipe conection (welding)
High pressure gas pipe connection (welding)
Liquid pipe connection (welding)
❋ When installing MCU, use the pattern sheet for installation that is provided with the product.
❋ When welding the gas pipes, protect the product with the ame-proof sheet.
❋ When connecting the MCU with outdoor units, default direction is set in the MCU.
If installing opposite direction, weld the enclosed copper cap in each high pressure, low pressure and liquid pipes.
Electrical wiring work
ENGLISH-49
02 INSTALLING THE PRODUCT
Specication of the circuit breaker and power cable
Single
Capacity (HP) Model MCA MFA
8 AM080FXWANR 16.1 20.0
10 AM100FXWANR 16.1 20.0
12 AM120FXWANR 20.0 25.0
20 AM200FXWANR 31.8 40.0
30 AM300KXWANR 48.1 63.1
Module (Premium energy eciency type)
Capacity
(HP) Model Module table MCA MFA
AM080FXWANR AM100FXWANR AM120FXWANR AM200FXWANR AM300KXWANR
16 AM160FXWANR2 2 32.2 40.0
18 AM180FXWANR2 1 1 32.2 40.0
22 AM220FXWANR2 1 1 36.1 40.0
24 AM240FXWANR2 2 40.0 50.0
26 AM260FXWANR2 2 1 48.3 63.0
28 AM280FXWANR2 1 1 47.9 63.0
30 AM300FXWANR2 1 1 47.9 63.0
32 AM320FXWANR2 1 1 51.8 63.0
34 AM340FXWANR2 1 2 56.1 63.0
36 AM360FXWANR2 2 1 64.0 75.0
38 AM380FXWANR2 1 1 1 64.0 75.0
40 AM400FXWANR2 2 63.6 75.0
42 AM420FXWANR2 1 1 1 67.9 75.0
44 AM440FXWANR2 2 1 71.8 80.0
48 AM480FXWANR2 1 2 79.7 90.0
50 AM500FXWANR2 1 2 79.7 90.0
52 AM520FXWANR2 1 2 83.6 100.0
60 AM600FXWANR2 3 95.4 125.0
ENGLISH-50
Electrical wiring work
Module (Premium compact type)
Capacity
(HP) Model
AM080FXWANR AM100FXWANR AM120FXWANR AM200FXWANR AM300KXWANR
MCA MFA
38 AM380KXWANR1 1 1 64.1 75
40 AM400KXWANR1 1 1 64.1 75
42 AM420KXWANR1 1 1 68 75
46 AM460KXWANR1 2 1 80.2 90
48 AM480KXWANR1 1 1 1 80.2 90
50 AM500KXWANR1 1 1 79.8 90
52 AM520KXWANR1 1 1 1 84.1 100
54 AM540KXWANR1 2 1 88 100
58 AM580KXWANR1 1 1 1 95.9 125
60 AM600KXWANR1 2 96 125
62 AM620KXWANR1 1 1 1 99.8 125
68 AM680KXWANR1 1 2 112.1 125
70 AM700KXWANR1 1 2 112.1 125
80 AM800KXWANR1 1 2 127.8 150
90 AM900KXWANR1 3 144 175
❋ Power Supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed exible
cord. (Code designation IEC:60245 IEC 66 / CENELEC: H07RN-F)
❋ When installing outdoor units in module, select the power supply cable according to the sum of outdoor unit capacity.
(Refer to the table for each model)
ex) Outdoor unit installation (AM100FXW✴ + AM120FXW✴)
6.0 mm2
2.5 mm2
①
②
ELCB
AM120FXW✴AM100FXW✴
②
①
or
MCCB+
ELB
ENGLISH-51
02 INSTALLING THE PRODUCT
• This device is intended for the connection to a power supply system with a maximum permissible system
impedance shown in the table (on the left page) at the interface point (power service box) of the user’s supply.
• The user must ensure that this device is connected only to a power supply system which fullls the
requirement above. If necessary, the user can ask the public power supply company for the system impedance
at the interface point.
• This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or
equal to Ssc(*2) at the interface point between the user’s supply and the public system. It is the responsibility
of the installer or user of the equipment to ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or
equal to Ssc(*2).
[Ssc (*2)]
Model Ssc [MVA]
AM080FXWA✴✴ 3.9
AM100FXWA✴✴ 3.9
AM120FXWA✴✴ 4.8
AM200FXWA✴✴ 7.7
AM300KXWA✴✴ 11.5]
NOTE
Caution for electrical work
• You must install ELCB or MCCB + ELB
- ELCB: Earth leakage breaker
- MCCB: Molded case circuit breaker
- ELB: Earth leakage breaker
• Do not operate the outdoor unit before completing the refrigerant pipe work.
• Do not disconnect or change the cable inside the product. It may cause damage to the product.
• Specication of the power cable is selected based on following installation condition; culvert installation/
ambient temperature 30 °C/ single multi conductor cables. If the condition is dierent from the ones stated,
please consult an electrical installation expert and re-select the power cable.
- If the length of power cable exceed 50m, re-select the power cable considering the voltage drop.
• Use a power cable made out of incombustible material for the insulator (inner cover) and the sheath (outer cover).
• Do not use the power cable with the core wire exposed due to insulator damage occurred during removal of the
sheath. When the core wire is exposed, it may cause re.
Insulator (inner cover)
Exposed wire core
<The example of exposed core wire>
Sheath (outer cover)
CAUTION
ENGLISH-52
Electrical wiring work
Power and communication cable conguration
f Main power and the ground cable must be withdrawn through the knock-out hole on the bottom-right or right side of
the cabinet.
f Withdraw the communication cable from the designated knock-out hole on the bottom-right side of the front part.
f Install the power and communication cable using separate cable protection tube.
f Fix a protection tube to the knock-out hole on the outdoor unit by using a CD connector or bushing. Make sure to use
insulating bushing.
f Make sure that power and communication cables do not block the front panel.
MCCB+
ELB
ELCB
Power cable
Communication cable between
outdoor units
or
Specication of the protection tube
Name Temper grade Applicable conditions
Flexible PVC conduit PVC When the protection tube is installed indoor and not exposed
to outside, because it is embedded in concrete structure
Class 1 exible conduit Galvanized steel sheet When the protection tube is installed indoor but exposed to
outside so there are risk of damage to the protection tube
Class 2 exible conduit Galvanized steel sheet and
Soft PVC compound
When the protection tube is installed outdoor and exposed to
outside so there are risk of damage to the protection tube and
extra waterproof is needed
Caution for perforating the knock-out hole
• Perforate a knock-out hole by punching it with a hammer.
• After perforating the knock-out hole, apply rust resisting paint around the hole.
• When you need to pass the cables through the knock-out hole, remove burrs on the hole and protection the
cable with a protection tape or bushing etc.
CAUTION
ENGLISH-53
02 INSTALLING THE PRODUCT
Power wiring diagram
Supplying 3 phase 4 wires (380-415V~)
3 phase 4 wires
(380 ~ 415 V)
Main outdoor unit
Main outdoor unit Sub outdoor unit
Sub outdoor unit
Communication
cable (Outdoor unit
~ Outdoor unit)
Main outdoor
unit
Sub outdoor
unit 1
Sub outdoor
unit 2
Communication
cable (Outdoor unit
~ Indoor unit)
Grounding Grounding Grounding
Wired remote
controller
Wired remote
controller
Wired remote
controller
MCCB+
ELB
or
ELCB
Communication
cable (Outdoor unit ~
Indoor unit )
Communication
cable (Outdoor unit ~
Outdoor unit )
Single phase 2 wires
(220 -240 V)
MCCB+
ELB
or
ELCB
f Connect a power cable of the outdoor unit after checking that R-S-T-N (3 phase 4 wire) is properly connected. (If the 380-
415V power is supplied to the N phase, PCB and other electrical part will be damaged.)
f Communication cable between indoor and outdoor units and communication cable between outdoor units has no
polarity.
f Arrange the cables with a cable tie.
❋ ELCB and ELB must be installed since there is risk of electric shock or re when they are not installed.
ENGLISH-54
Electrical wiring work
Selecting solderless ring terminal
f Select a solderless ring terminal for a power cable according to the nominal dimensions for cable.
f Apply insulation coating to the connection part of the solderless ring terminal and the power cable.
Silver solder
Nominal dimensions for cable (mm2)4/6 10 16 25 35 50 70
Nominal dimensions for screw (mm) 4888888888
B
Standard dimension (mm) 9.51515161216.516222224
Allowance (mm) ±0.2 ±0.2 ±0.2 ±0.3 ±0.3 ±0.3 ±0.4
D
Standard dimension (mm) 5.6 7.1 9 11.5 13.3 13.5 17.5
Allowance (mm) +0.3
-0.2
+0.3
-0.2
+0.3
-0.2
+0.5
-0.2
+0.5
-0.2
+0.5
-0.2
+0.5
-0.4
d1
Standard dimension (mm) 3.4 4.5 5.8 7.7 9.4 11.4 13.3
Allowance (mm) ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.3 ±0.4
E Min. (mm) 6 7.9 9.5 11 12.5 17.5 18.5
F Min. (mm) 5 9 9 13 15 13 13 13 14 20
L Max. (mm) 2028.53033 34 38435051
d2
Standard dimension (mm) 4.3 8.4 8.4 8.4 8.4 8.4 8.4 8.4 8.4 8.4
Allowance (mm) + 0.2
0
+ 0.4
0
+ 0.4
0
+ 0.4
0
+ 0.4
0
+ 0.4
0
+ 0.4
0
+ 0.4
0
t Min. (mm) 0.9 1.15 1.45 1.7 1.8 1.8 2.0
ENGLISH-55
02 INSTALLING THE PRODUCT
Connecting the power terminal
f Connect the cables to the terminal board with solderless ring terminals.
f Properly connect the cables by using certied and rated cables and make sure to x them properly so that external force
is not applied to the terminal.
f Use a driver and wrench that can apply the rated torque when tightening the screws on the terminal board.
f Tighten the terminal screws by complying rated torque value. If the terminal is loose, re can occur due to arc heat
generation and if the terminal is too tight, terminal board could get damaged.
RS TN
MCCB+
ELB
or
ELCB
3 phase
380-415 V
Communication /
External contact signal
Communication cable
(Indoor/outdoor unit)
Protection tube for
power cable
Conduit (eld supply)
Conduit mounting plate
Lock nut (eld supply)
Sub unit 3 phase (380-415V)
(Knock out hole)
GroundingGrounding
Screw Tightening torque for terminal (Nm)
M4 1.2~1.8 Single phase (220-240V) power cable
M8 5.5~7.3 3 phase (380-415V) power cable
• When removing the outer sheath of the power supply cable, be careful not to scratch the inner sheath of the
cable.
• Make sure that more than 20mm of the outer sheath of the indoor unit power and communication cable are
inside the electrical component box.
• Install the communication cable separately from power cable and other communication cables.
CAUTION
ENGLISH-56
Electrical wiring work
Examples of how to use the cable striper
<Cable striper>
1. Adjust the blade position by coin. (Controller is at the bottom side of the tool.) Fix the blade
position according to the outer sheath thickness of the power cable.
2. Fix the power cable and tool by using the hook at the top side of the tool.
3. Cut out the outer sheath of the power cable by revolving the tool in the direction of the arrow,
two or three times.
4. At this situation, cut out the outer sheath of the power cable by moving the tool toward the
direction of the arrow.
5. Slightly bend the wire and pull out the cut part of the outer sheath.
Fixing the power cable
• Do not let the power cable come into contact with the pipes inside the outdoor unit. If the power supply cable
touches the pipes, the vibration of the compressor is transferred to the pipes and can damage the power supply
cables or pipes, creating the danger of re or explosion.
• Make sure that the place where the sheath of power supply cable is removed is inside the power supply box. If it
is impossible, you should connect the protection tube for power cable to the power supply box.
• After arranging the power cable into the power supply box, tighten the cover.
CAUTION
Connect the ring terminal of 3 phase cable
1. Cut the power cable to an appropriate length and connect it with the solderless terminal.
2. After connecting the power cable to the terminal as seen in the illustration, x it with cable tie.
3. Fix the housing, which has an insulator, to the terminal board.
ENGLISH-57
02 INSTALLING THE PRODUCT
Fixing the ground cable
f Connect the ground cable to the grounding hole inside the power supply box.
Withdrawing the power cable
f Through the cable withdrawing hole, penetrate the knock out hole on the side and connect the protection tube (for
power cable) up to the power box.
❋ When penetrating knock out hole, be careful not to damage the heat exchanger pipe or temperature sensor.
❋ Be sure that the power supply cable is not damaged by burr on the knock-out hole.
Installing the Solution device
f When the number of indoor units installed with the outdoor unit is 16 or less
R2 Solution device terminal
R1
OF2 Communication cable terminal
(Outdoor unit ~ Outdoor unit)
OF1
F2 Communication cable terminal
(Outdoor unit ~ Indoor unit)
F1
F1 F2 OF1 OF2 R1 R2
❋ When connecting the communication cable, use a wire holder to x it.
f Location of the interface module
❋ To connect old communication type upper level controller, interface module
must be installed. For detail instruction of installation, refer to the installation
manual of corresponding interface module.
ENGLISH-58
Electrical wiring work
Connecting the MCU (MCU-S6NEE1N, MCU-S4NEE1N, MCU-S4NEE2N)
Example 1
Indoor unit Outdoor
unit
Indoor unit
ELB
MCCB
220-240 V~
Example 2
Indoor unit Outdoor
unit
ELB
MCCB
220-240 V~
Indoor unit Indoor unit
f Power must be supplied to the MCU separately from the outdoor unit.
f Connect the communication cable of the outdoor unit (F1, F2) to the communication cable of the MCU (F1, F2)
• Power cable connection should be done with the solderless ring terminal.
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
MCU
MCU
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
MCU
MCU
• When installing the MCU, communication cable can be connected as shown above.
CAUTION
ENGLISH-59
02 INSTALLING THE PRODUCT
Connecting the MCU (MCU-S6NEK2N, MCU-S4NEK3N, MCU-S2NEK2N, MCU-S1NEK1N)
Example
Outdoor unit
Indoor unit Indoor unit
ELB
ELB
MCCB
MCCB
220-240 V~
f Power must be supplied to the MCU separately from the outdoor unit.
f Connect the communication cable of the outdoor unit (F1, F2) to the communication cable of the MCU (F1, F2)
• Power cable connection should be done with the solderless ring terminal.
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
MCU
MCU
• When installing the MCU, communication cable can be connected as shown above.
CAUTION
ENGLISH-60
Electrical wiring work
Grounding work
Grounding must be done by a qualied installer for your safety.
Grounding the power cable
f The standard of grounding may vary according to the rated voltage and installation place of the air conditioner.
f Ground the power cable according to the following table.
Power condition
Installation place Voltage to ground is lower than 150V Voltage to ground is over 150V
High humidity Must perform the grounding work 3. Note 1)
(Including the case where earth leakage breaker is installed)
Average humidity Perform grounding work 3. Note 1) Must perform the grounding work 3.Note 1)
(Including the case where earth leakage
breaker is installed)
Low humidity Perform grounding work 3, if possible, for
your safety. Note 2)
Note 1) About grounding work 3.
• Grounding work must be done by an expert (with qualication).
• Check if the grounding resistance is lower than 100. When installing a earth leakage breaker (that can cut the electric
circuit within 0.5 second in case of a short circuit), allowable grounding resistance should be 30~500.
Note 2) Grounding at dry place
• The grounding resistance should be lower than 100. Even in worst case, grounding resistance should be lower than
250.
Performing the grounding work
f Use a rated grounding cable by referring to the specication of the electric cable for the outdoor unit.
❋ When using the exclusive grounding terminal (When
the grounding terminal is already built on the house)
❋ When using grounding of the switch board
Exclusive grounding
terminal Distributing board
ENGLISH-61
02 INSTALLING THE PRODUCT
Air tightness test and vacuum drying
Air tightness test
f Use tools for R-410A to prevent the inow of foreign substances and resist against the internal pressure.
f Do not remove the core of lling port.
f Use Nitrogen gas for air tightness test as shown in the illustration.
Manifold gage
Filling port
High pressure gas pipe
Liquid pipe
Low pressure gas pipe
Nitrogen gas
Apply pressure to the liquid side pipe and gas side pipe
(when installing outdoor units in module) with Nitrogen
gas at 4.1MPa.
If you apply pressure at more than 4.1MPa, pipes may get
damaged. Apply pressure with pressure regulator and pay
attention to the pressure of the nitrogen.
Keep it for minimum 24 hours to check if pressure drops. After applying Nitrogen gas, check there's any change of
pressure, using a pressure regulator.
If the pressure drops, check for gas leakage. If the pressure is changed, apply soap water to check for leakage
and check the pressure of the nitrogen gas again.
Maintain 1.0MPa of the pressure before performing
vacuum drying and check for further gas leakage.
After checking the rst gas leakage, maintain 1.0MPa to check for
further gas leakage.
• Perform a Nitrogen gas leak test with the service valve of the outdoor unit closed.
• When charging the nitrogen gas, charge it from the both (high•low pressure) sides.
• If the pipe is lled in a short time with a highly excessive pressure of Nitrogen gas, the pipes may get damaged.
Make sure to use a regulator to prevent the high pressure Nitrogen gas, over 4.1MPa, from entering into the pipe.
CAUTION
ENGLISH-62
Air tightness test and vacuum drying
Vacuum drying pipes and indoor units
f Use tools for R-410A to prevent the inow of foreign substances and resist against the internal pressure.
f Use vacuum pump that allows vacuuming under -100.7kPa (5 Torr).
f Use the vacuum pump with the check valve to prevent pump oil from owing backward while the vacuum pump is
stopped.
f Completely close the liquid·gas side service valve of the outdoor unit.
Connect the manifold gauge to the liquid side pipe
and gas side pipe (when installing outdoor units in
module).
When installing outdoor units in module, connect the manifold gauge to
liquid side pipe and the gas side pipe.
Perform vacuum drying of the liquid side pipe and
gas side pipe (when installing outdoor units in
module) using a vacuum pump.
Make sure that check valve is installed to prevent pump oil from owing
into the pipe.
While the vacuum gauge pressure is less than
-100.7kPa (5Torr), perform the vacuum drying for
more than 1 hour and close the valve.
Vacuum pressure must be checked with the vacuum gauge.
After vacuum pump stops, check whether the
pressure is maintained within -100.7kPa (5Torr) for
an hour.
Charge additional refrigerant to the pipe
No
Yes
Perform vacuum drying again
Check for gas leakage
Vacuum destruction
• Apply nitrogen gas to the pipe at pressure
of 0.05Mpa.
YesNo
Over -100.7kPa (5Torr)
Pressure increase
❋ If the pressure rises in an hour, either water is remaining inside the pipe or there is a leakage.
❋ When the ambient temperature of vacuuming pipe is low (less than 0 °C), moisture might remain within the pipe.
Therefore, pay special attention to the pipe sealing in the winter.
ENGLISH-63
02 INSTALLING THE PRODUCT
Pipe insulation
Insulating the refrigerant pipes and branch joints
f Check for gas leakage before completing (the hose and pipe insulation) and if there is no sign of leakage, make sure to
insulate the pipes and hoses.
f Use EPDM material insulator that meets the following conditions.
Test item Unit Standard
Density g/cm30.048~0.096
Dimensional change rate by heat % Below -5
Absorption rate g/cm3Below 0.005
Thermal conduction rate W/m·K Below 0.037
Moisture transpiration factor ng/(m2·s·Pa) Below 15
Moisture transpiration grade g/(m2·24h) Below 15
Formaldehyde dispersion mg/L There should be none
Oxygen rate % Over 25
Selecting the refrigerant pipe insulator
f Insulate the gas pipe and liquid pipe by referring to the thickness of insulator for each pipe size.
f The standard condition is; temperature at 30°C, humidity less than 85%. If case if the humidity is higher, you must
increase the size by one grade as stated in below table.
Pipe Diameter of
refrigerant pipe
Insulator (Cooling·Heating)
Remarks
General
[30 °C, 85 %]
High humidity
[30 °C, over 85 %]
EPDM,NBR
Liquid pipe
Ø 6.35~Ø 9.52 9 mm
Heat resisting
temperature over 120°C
Ø 12.7~Ø 50.80 13 mm
Gas pipe
Ø 6.35 13 mm 19 mm
Ø 9.52 ~ Ø 25.40
19 mm
25 mm
Ø 28.58 ~ Ø 44.45 32 mm
Ø 50.80 25 mm 38 mm
❋ When installing insulation in places and conditions below, use the same insulation that is used for high humidity
conditions.
- High humidity places such as shoreline, hot spring, near lake or river, and ridge (when the part of the building is
covered by earth and sand.)
- Restaurant ceiling, sauna, swimming pool etc.
- The ceiling frequently exposed to moisture and cooling is not covered. (e.g. The pipe installed at a corridor of a
dormitory and studio or near an exit that opens and closes frequently.”)
- The place where the pipe is installed is highly humid due to the lack of ventilation system.
ENGLISH-64
Pipe insulation
Insulate the refrigerant pipe
f Make sure to insulate the refrigerant pipe, branch joint, distribution header, and the connection part of the pipes.
f If you insulate the pipes, condensed water will not fall from the pipes.
f Check if there are any cracks on the insulation at the bent part of the pipe.
Fix securely without any gap.
Install the insulation to be
overlapped
Indoor unit
Insulator
Insulator Clamp
Liquid side pipe
Gas side
pipe
Insulator
Insulating pipes Insulating pipes connected behind the EEV kit
• The insulation of the gas and liquid pipes can be in contact
with each other but they should not press excessively against
each other.
• When the gas side and liquid side pipes are contacting each
other, increase the thickness of the insulation by one grade.
• When installing the gas side and liquid side pipes, leave at
least 10mm of space.
• When the gas side and liquid side pipes are contacting each
other, increase the thickness of the insulation by one grade.
Gas pipe
Liquid pipe
Insulator
Insulator
Gas pipe
10 mm10 mm 10 mm
Liquid pipe
• Install the insulation without any gaps or cracks and
use adhesive on the connection part of it to prevent
moisture from entering.
• Bind the refrigerant pipe with insulation tape if it
is exposed to outside sunlight. (When binding the
pipe with nishing tape, be careful not to reduce the
thickness of the insulation.)
• Install the refrigerant pipe respecting that the
insulation does not get thinner on the bent part or
hanger of pipe.
• When the thickness of insulation is reduced,
reinforce the reduced thickness with additional
insulation.
Insulator for refrigerant
pipe
a x 3
Hanger
Additional Insulator
a
CAUTION
ENGLISH-65
02 INSTALLING THE PRODUCT
Insulate the distribution header
f Fix the distribution header with a cable tie and cover the connected part.
f Insulate the distribution header and the welded part and wrap the connected part with an
adhesive insulation tape to prevent dew formation.
Insulation
Adhesive insulation tape
Insulate the refrigerant
pipe
Insulate the
distribution
header
Insulate after welding a stopper
Adhesive insulation tape
f Fix the distribution header with a hanger after insulating it.
Insulating the branch joint
f Tightly attach the insulator, provided with the branch joint, to the separately purchased insulator. Wrap the connected
part with an insulator (separately purchased item) that has thickness of at least 10mm.
f Use an insulator that resist heat up to 120°C. Wrap the branch joint with an insulation that has thickness of at least 10mm.
Fix securely without any gap.
Provided
Insulator
Fix securely without
any gap.
Pipe insulator
(Separately
purchased item)
Pipe insulator
(Separately
purchased item)
150mm Branch
joint
Thickness of the insulator (Separately purchased
item) should be thicker than 10mm.
Insulation tape (Separately purchased item)
Pipe insulator (Separately purchased item)
Pipe
❋ Attach the adhesive insulation
tape to the pipe, as shown in the
picture, after insulating the pipe.
ENGLISH-66
Pipe insulation
Insulating the pipe located inside of the outdoor unit
f With a pipe insulator, insulate the pipe up to whole service valve located inside of the outdoor unit.
f Seal the gap between the outdoor unit pipe and the insulator. Rainwater and dewdrops may soak through the gap
between the pipe and the insulation of the outdoor unit installed on the outside.
f Separate the cover of the pipe and close it after insulation work. Only remove a knock-out hole cover where the pipe will
be installed. If the knock-out hole is open unnecessarily, it must be closed. If not, small animals such as squirrels and rats
may get into the unit through the hole and the unit may be damaged.
H/P
HR
ENGLISH-67
02 INSTALLING THE PRODUCT
Refrigerant collection
• After installing the product, be sure to perform leak tests on the piping connections. Before pumping down
refrigerant to inspect or relocate the outdoor unit, be sure to stop the compressor and then remove the
connected pipes.
- Do not operate the compressor while a valve is open due to refrigerant leakage from a pipe or an unconnected
or incorrectly connected pipe. Failure to do so may cause air to ow into the compressor and too a high
pressure to develop inside the refrigerant circuit, leading to an explosion or product malfunction.
WARNING
Collecting refrigerant (to a refrigerant container)
You cannot collect the entire refrigerant in the system at once during pump down operation. Therefore you must collect
additional refrigerant into the empty refrigerant container prior to pump down operation.
1. Connect a refrigerant container to an outdoor unit as shown in the illustration and operate about 50% of the indoor units
in cooling mode.
2. When the pressure on the high pressure side is over 2.94 Mpa, decrease the number of operating indoor unit.
3. Open the manifold gauge (that is connected to the liquid side service valve) and the valve on the refrigerant container to
collect refrigerant.
Manifold gage
Refrigerant
container
Scale
Filling port
High pressure gas pipe
Low pressure gas pipe
Liquid pipe (Flare installation)
• Refrigerant must be collected prior to pump down operation.
• Make sure that amount of collecting refrigerant does not exceed capacity of the refrigerant container.
• Refer to service manual for detail instruction.
CAUTION
ENGLISH-68
Charging refrigerant
f The R-410A refrigerant is blended refrigerant. Add only liquid refrigerant.
f Measure the quantity of the refrigerant according to the length of the liquid side pipe. Add quantity of the refrigerant
using a scale.
Important information regulation regarding the refrigerant used
This product contains uorinated greenhouse gases. Do not vent gases into the atmosphere.
• Inform user if system contains 5 tCOe or more of uorinated greenhouse gases. In this case, it has to be checked
for leakage at least once every 12 months, according to regulation n°517/2014. This activity has to be covered
by qualied personnel only. In case situation above (5 tCOe or more of R-410A), installer (or recognized person
which has responsibility for nal check) has to provide a maintenance book, with all the information recorded
according to REGULATION (EU) No 517/2014 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16 April
2014 on uorinated greenhouse gases.
CAUTION
Please ll in the following with indelible ink on the refrigerant charge label supplied with this product and on
this manual.
f ① : The factory refrigerant charge of the product.
f ② : The additional refrigerant amount charged in the eld.
f ①+② The total refrigerant charge.
d
Indoor unit
Outdoor
unit
②
①
Refrigerant type GWP value
R-410A 2088
• GWP=Global Warming Potential
• Calculating tCOe : kg x GWP / 1000
Unit kg tCOe
①,a
②,b
①+②,c
a Factory refrigerant charge of the product: see unit name plate.
b Additional refrigerant amount charged in the eld. (Refer to the above information for the quantity of
refrigerant replenishment.)
c Total refrigerant charge.
d Refrigerant cylinder and manifold for charging.
NOTE
• The lled-out label must be adhered in the proximity of the product charging port.
(ex. onto the inside of the stop valve cover.)
CAUTION
ENGLISH-69
02 INSTALLING THE PRODUCT
Single installation
f Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
f If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid
side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB.
Gas side
Scale
R-410A (Inject
liquid refrigerant)
Liquid side
Vacuum port
Manifold gage
Service valve
Outdoor unit
Module installation
f Open the manifold gauge valve connected to the liquid side service valve and add the liquid refrigerant.
f If you cannot add the whole quantity of the refrigerant while the outdoor unit is stopped, open the gas side and liquid
side service valve. Then, add remaining refrigerant by pressing the refrigerant adding button of the outdoor PCB.
f If you use the refrigerant charging function from the PCB, outdoor unit will operate and charge the refrigerant. At this
time, you must use gas side manifold gauge for cooling operation and use charging port for heating at the manifold
gauge for heating operation.
Gas side
Scale
R-410A (Inject
liquid refrigerant)
Liquid side
Vacuum port
Liquid side pipe Service valve
Outdoor unit Outdoor unit
Manifold gage
• Open the gas side and liquid side service valve completely after charging the refrigerant. (If you operate the air
conditioner with the service valve closed, the important parts may be damaged.)
• Put on safety equipment when charging refrigerant.
• Do not charge the refrigerant when you adjust or control other product such as indoor units or EEV kits.
• If you charge the refrigerant with the front cabinet open, be very careful with the fan on the top of the product
to prevent personal injury.
• When the ambient temperature is low in winter time, do not heat the refrigerant container to speed up the
charging process. There is risk of explosion.
• Beware for possibility of refrigerant leakage when you connect the manifold gauge to the charging port for
heating.
• Close the valve of the refrigerant container immediately after charging the refrigerant. If not, there might be a
change in entire amount of refrigerant.
CAUTION
ENGLISH-70
Charging refrigerant
Using service valve for gas
f After charging the refrigerant, close all caps as shown in the illustration.
f Tightening torque for the cap of refrigerant charging port 10~12N·m
f Tightening torque for the cap of control part 20~25N·m
f Opening/closing torque for the valve
- Over Ø 19.05 : 10.0N·m
Cap for the control part
Cap for the refrigerant
charging port
Basic segment display
Step Display content Display
At initial power input Checking segment display SEG 1 SEG 2 SEG 3 SEG 4
“8” “8” “8” “8”
While setting communication
between indoor and outdoor unit
(Addressing)
Number of connected indoor units
SEG 1 SEG 2 SEG 3 SEG 4
“A” “d”
Number of communicated
units
❋Refer to "View Mode"
for communication
address
After communication setting
(usual occasion) Transmit/Reception address
SEG 1 SEG 2 SEG 3 SEG 4
I/U: “A”
MCU: “C”
I/U: “0”
MCU: “1”
Reception address (in
decimal number)
❋ I/U : Indoor unit
ENGLISH-71
02 INSTALLING THE PRODUCT
Setting outdoor unit option switch and key function
Setting outdoor unit option switches : A TYPE
SW58
K21
K22
K21
K22
TEN ONE MCU
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
❋ If you install HR products, you must match the address between the MCU and the indoor unit.
Switch Setting Function Remarks
SW51 /
SW52
Setting total number of installed indoor unit
SW51: Tens digit, SW52: Units digit
Setting can be done from the main outdoor unit
only (sub unit: setting is unnecessary)
Ex) When 12 indoor units are installed SW51:1,
SW52:2
SW53
K5 On H/P(Heat Pump) System Connect Liguid pipe and High pressure gas pipe
O HR(Heat Recovery) System Close outdoor unit's heatpump valve
K6
On Enable maximum capacity restriction for cooling
operation
Restrict excessive capacity increase when
operating indoor units with small capacity
O Disable maximum capacity restriction for cooling
operation -
K7 K8 Selecting outdoor unit address
On On Outdoor unit address: No. 1 Main unit
On O Outdoor unit address: No. 2 Sub unit 1
O On Outdoor unit address: No. 3 Sub unit 2
O O Outdoor unit address: No. 4 Sub unit 3
SW57 Setting total number of connected MCU Setting can be done from main unit only
Ex) When 3 MCUs are installed SW57:3, SW52:2
SW58
K21 K22 Selecting type of circulating water
ON ON Water circulation -
ON OFF Anti-freeze circulation (freezing point of anti-freeze
must be below -8 °C) Minimum temperature of entering water -5 °C
OFF ON Anti-freeze circulation (freezing point of anti-freeze
must be below -15 °C) Minimum temperature of entering water -10 °C
❋ Maintain appropriate concentration level of anti-freeze according to SW58 switch setting. (Refer to 'Cooling water
management' on page 103)
ENGLISH-72
Setting outdoor unit option switch and key function
Setting outdoor unit option switches : B TYPE
f Setting outdoor install option
Step Button Display Description Note
Start
Outdoor unit address
Quantity of indoor units
Main unit? No
No
Yes
Yes
Save
Heat recovery?
Quantity of MCUs
Outdoor unit address
Step1 Outdoor unit
display Setting required -
Step2
Press (K1+K2) for
2 seconds Unit address
for module
combination
00: Main unit
K4 x 1 time 01: Sub1 unit
K4 x 2 times 02: Sub2 unit
K4 x 3 times 03: Sub3 unit
Step3
If it is main unit, go to step4.
Otherwise, press K2 button for 2 seconds to save & exit
(system will be reset)
Quantity of indoor units
Step4 Press K1 Ready to set -
Step5
K2 x n times X Tens digit (0 ~ 6) Ex) 03: 3 units
64: 64 units
K4 x n times X Ones digit (0 ~ 9)
* K4: Press for 2 seconds - automatic detection of indoor units’ quantity
Step6
If it is heat recovery model, go to step 7.
Otherwise, press K2 button for 2 seconds to save & exit
(system will be reset)
Quantity of MCUs * Heat recovery model only
Step7 Press K1 Ready to set -
Step8
K2 x n times X Tens digit (0 ~ 1) Ex) 03: 3 units
16: 16 units
K4 x n times X Ones digit (0 ~ 9)
* K4: Press for 2 seconds - automatic detection of MCUs' quantity
Step9 Press K1 Ready to set
00 : Heat pump
system
01 : Heat recovery
system
Step10 Press K4 Ones digit(0~1)
Step11 K2: long Save Restart
* Press K1 for 2 seconds to exit without save regardless of setting step.
ENGLISH-73
02 INSTALLING THE PRODUCT
Setting outdoor unit key function
K1 K2 K3 K4
< A type > < B type >
Installing and setting the option with tact switch and explanation of the functions
Setting the option
1. Press and hold K2 to enter the option setting. (Only available when the operation is stopped)
- If you enter the option setting, display will show the following. (If you have set the 'Emergency operation for
compressor malfunction', 1 or 2 will be displayed on Seg 4.)
- Seg 1 and Seg 2 will display the number for selected option.
- Seg 3 and Seg 4 will display the number for set value of the selected option.
2. If you have entered option setting, you can shortly press the K1 switch to adjust the value of the Seg 1, Seg 2 and select
the desired option. (Refer to pages 74~77 for the Seg number of the function for each option)
Example)
Z
3. If you have selected desired option, you can shortly press the K2 switch to adjust the value of the Seg 3, Seg 4 and change
the function for the selected option. (Refer to pages 74~77 for the Seg number of the function for each option)
Example)
Z
ENGLISH-74
Setting outdoor unit option switch and key function
4. After selecting the function for options, press and hold the K2 switch for 2 seconds. Edited value of the option will be
saved when entire segments blinks and tracking mode begins.
• Edited option will not be saved if you do not end the option setting as explained in above instruction.
CAUTION
❋ While you are setting the option, you may press and hold the K1 button to reset the value to previous setting.
❋ If you want to restore the setting to factory default, press and hold the K4 button while you are in the option setting
mode.
- If you press and hold the K4 button, setting will be restored to factory default but it doesn't mean that restored setting
is saved. Press and hold the K2 button. When the segments shows that tracking mode is in progress, setting will be
saved.
Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks
Emergency
operation for
compressor
malfunction
Individual 0 0
0 0 Disabled (Factory default)
E560 will occur when all
the compressors are set as
malfunction state.
01 Set compressor 1 as
malfunction state
02 Set compressor 2 as
malfunction state
Cooling capacity
correction Main 0 1
0 0 7-9 (Factory default)
Targeted evaporation
temperature [°C].
(When low temperature value is
set, discharged air temperature
of the indoor unit will decrease)
0 1 5-7
0 2 9-11
0 3 10-12
0 4 11-13
0 5 12-14
0 6 13-15
Capcity correction
for heating Main 0 2
0 0 2.8 (Factory default)
Targeted high pressure [MPa].
(When low pressure value is set,
discharged air temperature of
the indoor unit will decrease)
01 2.5
02 2.6
03 2.7
04 2.9
05 3.0
06 3.1
07 3.2
08 3.3
ENGLISH-75
02 INSTALLING THE PRODUCT
Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks
Current restriction
rate Individual 0 3
0 0 100% (Factory default)
When restriction option is
set, cooling and heating
performance may decrease.
0 1 95 %
0 2 90 %
0 3 85 %
0 4 80 %
0 5 75 %
0 6 70 %
0 7 65 %
0 8 60 %
0 9 55 %
1 0 50 %
1 1 No restriction
Oil collection
interval Main 0 4
0 0 Factory default
0 1 Shorten the interval by 1/2
Disable Main 0 5
0 0 Disable This function is not applicable
for this model
0 1 Disable
Disable Individual 0 6
0 0 Disable This function is not applicable
for this model
0 1 Disable
Disable Main 0 7
0 0 Disable
This function is not applicable
for this model
0 1 Disable
0 2 Disable
0 3 Disable
Setting high-
head condition Main 0 8
0 0 Disable (Factory default)
01
Level 1 of height dierence
type 1 (Indoor unit is lower
than outdoor unit)
When outdoor unit is over 40 ~
80 m above the indoor unit
02
Level 2 of height dierence
type 1 (Indoor unit is lower
than outdoor unit)
When outdoor unit is over 80 m
above the indoor unit
03
Height dierence type 2
(Outdoor unit is lower than
indoor unit)
When indoor unit is over 30 m
above the outdoor unit
Setting long-
piping condition
(Setting is
unnecessary
if high-head
condition is set.)
Main 0 9
0 0 Disable (Factory default)
0 1 Long piping level 1
When equivalent length of
farthest indoor unit from
the outdoor unit is between
100~170 m
0 2 Long piping level 2
When equivalent length of
farthest indoor unit from the
outdoor unit is over 170 m
ENGLISH-76
Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks
Energy saving/
rapid cooling
setting
(B type PBA)
Main 1 0
0 0 Disable (Factory default)
0 1 Energy saving mode
Energy saving mode triggers
when the room temperature
reaches desired temperature
while operating in cooling or
heating mode.
0 2 Rapid cooling This function increases cooling
speed.
Disable Main 1 1
0 0 Disable This function is not applicable
for this model
0 1 Disable
Expand
operational
temperature
range for cooling
operation
Main 1 2
0 0 Disable
0 1 Enable
Channel address Main 1 3
AUAutomatic setting (Factory
default) Address for classifying the
product from upper level
controller (DMS, S-NET 3, etc)
0 ~ 15 Manual setting for channel
0~15
Disable Main 1 4
0 0 Disable This function is not applicable
for this model
0 1 Disable
Circulation water
ow control Individual 1 5
0 0 Disable (Factory default)
0 1 7-10 V
When variable ow control
valve is applied
0 2 5-10 V
0 3 3-10 V
Forced quiet
mode (Disuse) Main 1 6 0 0 Disused option
High-speed
operation
(B type PBA)
Main 1 7
0 0 Disable (Factory default)
High-speed operation
0 1 Enable
Max. capacity
restriction
(B type PBA)
Main 1 8
0 0 Enable Maximum cooling capacity
restriction
0 1 Disable
Gasleak
Pumpdown
(B type PBA)
Main 1 9
0 0 Disable
Leaked refrigerant collection
0 1 Enable
Setting outdoor unit option switch and key function
ENGLISH-77
02 INSTALLING THE PRODUCT
Optional item Input unit SEG1 SEG2 SEG3 SEG4 Function of the option Remarks
Note 1) Circulation
uid ow setting
(B type PBA)
Individual 2 0
00 Water
Circulation uid ow setting0 1 Anti-freeze solution 1
0 2 Anti-freeze solution 2
Disable Main 2 1
0 0 Disable This function is not applicable
for this model
0 1 Disable
Emergency
operation for
indoor unit
communication
error (B type PBA)
Main 2 2
0 0 Disabled (Factory default)
When set, emergency operation
is possible even if an indoor
communication error occurs.
01
Indoor high humidity condition
(operating for up to 12hours)
02
Indoor low humidity condition
(operating for up to 24hours)
Note 1)
Anti-freeze solution 1: Freezing point of anti-freeze must be below -8 ˚C. (Minimum temperature of entering water: - 5˚C)
Anti-freeze solution 2: Freezing point of anti-freeze must be below -15 ˚C. (Minimum temperature of entering water: - 10˚C)
❋ There is a risk of water leakage during emergency operation for indoor unit communication error. Please be careful when
using it.
ENGLISH-78
Setting outdoor unit option switch and key function
Setting key operation and checking the view mode with tact switch
K1 K2 K3 K4
< A type > < B type >
K1 (Number of
press) KEY operation Display on segment
Press and hold 1
time Auto trial operation “K” “K” “BLANK” “BLANK”
1 time Refrigerant charging in Heating mode “K” “1” “BLANK” “BLANK”
2 times Trial operation in Heating mode “K” “2” “BLANK” “BLANK”
3 times Pump out in Heating mode (Outdoor unit address 1) “K” “3” “BLANK” “1”
4 times Pump out in Heating mode (Outdoor unit address 2) “K” “3” “BLANK” “2”
5 times Pump out in Heating mode (Outdoor unit address 3) “K” “3” “BLANK” “3”
6 times Pump out in Heating mode (Outdoor unit address 4) “K” “3” “BLANK” “4”
7 times Vacuumig (Outdoor unit address 1) “K” “4” “BLANK” “1”
8 times Vacuumig (Outdoor unit address 2) “K” “4” “BLANK” “2”
9 times Vacuumig (Outdoor unit address 3) “K” “4” “BLANK “ “3”
10 times Vacuumig (Outdoor unit address 4) “K” “4” “BLANK” “4”
11 times Vacuuming (All outdoor units) “K” “4” “BLANK” “A”
12 times End Key operation -
ENGLISH-79
02 INSTALLING THE PRODUCT
K2 (Number of press) KEY operation Display on segment
1 time Refrigerant charging in Cooling mode K - 5 - BLANK - BLANK
2 times Trial operation in Cooling mode K - 6 - BLANK - BLANK
3 times Pump down all units in Cooling mode K - 7 - BLANK - BLANK
4 times HR: Pipe connection inspection
H/P: Auto trial operation K - 8 - BLANK - BLANK
5 times Checking the amount of refrigerant
K - 9 - X - X
(Display of last two digits may dier depending on
the status)
6 times Discharge mode of DC link voltage K - A - BLANK - BLANK
7 times Forced oil collection K - C - BLANK - BLANK
8 times Inspect inverter compressor 1 K - D - BLANK - BLANK
9 times Inspect inverter compressor 2 K - E - BLANK - BLANK
10 times Water pipe valve/Pump check K - F - BLANK - BLANK
11 times Cooling fan/Flow control valve check K - G - BLANK - BLANK
12 times
A type PBA End key operation -
B type PBA HR : Auto pipe pairing,
H/P : Unused
“K””H”XX
(Display of last two digits may dier
depending on the progress)
13 times B type PBA End key operation -
❋ During “Discharge mode of DC link voltage,” voltage of INV1 and INV2 will be displayed alternately.
❋ Even when the outdoor unit power is o, it is dangerous when you come in contact with inverter PCB and fan PCB since
they are charged with high DC voltage.
❋ When pressing K2 key 9 to 12 times without inverter checker, error code can be displayed on segment even though the
outdoor unit is normal.
❋ When replacing/repairing the PCB, cut o the power and wait until the DC voltage is discharged before replacing/
repairing them (Wait for more than 15 minutes to allow it to discharge naturally.)
❋ When there were error, ‘Discharge mode of DC link voltage’ may not have been eective. Especially if error E464 and E364
have been occurred, power element might be damaged by re and therefore, do not use the ‘Discharge mode of DC link
voltage.’
❋ If the 1st-generation MCU is installed, the Auto pipe pairing operation can not be used.
If the 2nd-generation MCU is installed, the Checking the pipe connection can not be used.
- 1st-generation MCU : MCU-S*NEE*N
- 2nd-generation MCU : MCU-S*NEK2N,MCU-S4NEK3N,MCU-S1NEK1N
❋ If there is an A type PBA among the outdoor units installed as a module, the Auto pipe pairing operation can not be used.
K3 (Number of
press) KEY operation Display on segment
1 time Intialize (Reset) setting Same as initial state
Setting outdoor unit option switch and key funtion
ENGLISH-80
Setting outdoor unit option switch and key function
K1 K2 K3 K4
< A type > < B type >
K4 (Number of
press) KEY operation Display on segment
SEG 1 SEG2, 3, 4
1 time Outdoor unit model 1 AM120FXW✴ O, 1, 2
2 times Target frequency (Compressor 1) 2 120 Hz 1, 2, 0
3 times Target frequency (Compressor 2) 3 120 Hz 1, 2, 0
4 times High pressure (MPa) 4 1.52 MPa 1, 5, 2
5 times Low pressure (MPa) 5 0.43 MPa 0, 4, 3
6 times Discharge temperature (Compressor 1) 6 87 °C 0, 8, 7
7 times Discharge temperature (Compressor 2) 7 87 °C 0, 8, 7
8 times IPM temperature (Compressor 1) 8 87 °C 0, 8, 7
9 times IPM temperature (Compressor 2) 9 87 °C 0, 8, 7
10 times CT sensor value (Compressor 1) A 2 A 0, 2, 0
11 times CT sensor value (Compressor 2) B 2 A 0, 2, 0
12 times Suction temperature C -42 °C -, 4, 2
13 times COND OUT temperautre D -42 °C -, 4, 2
14 times Temperature of liquid pipe E -42 °C -, 4, 2
15 times TOP temperature (Compressor 1) F -42 °C -, 4, 2
16 times TOP temperature (Compressor 2) G -42 °C -, 4, 2
17 times Water temperature H -42 °C -, 4, 2
18 times EVI inlet temperature I -42 °C -, 4, 2
19 times EVI outlet temperature J -42 °C -, 4, 2
20 times Main EEV 1 step K 2000 steps 2, 0, 0
21 times Main EEV2 step L 2000 steps 2, 0, 0
22 times EVI EEV step M 300 steps 3, 0, 0
23 times HR EEV step N 2000 steps 2, 0, 0
24 times - O -
ENGLISH-81
02 INSTALLING THE PRODUCT
K4 (Number of
press) KEY operation Display on segment
SEG 1 SEG2, 3, 4
25 times Current frequency of the compressor 1 P 120 Hz 1,2,0
26 times Current frequency of the compressor 2 Q 120 Hz 1,2,0
27 times Suction 2 temperature R -42 °C -, 4, 2
28 times Address of master indoor unit S When master indoor unit is not set BLANK, N, D
When indoor unit No.1 is set as master indoor unit 0, 0, 1
29 times Temperature of control box T -42 °C -, 4, 2
K4 (Number of
press)
Press and hold
the K4 to enter
the setting
Displayed content
Display on segment
page1 page2
1 time Main version MAIN Version (ex. 1412)
2 times Hub version HUB Version (ex. 1412)
3 times Water hub version HUB2 Version (ex. 1412)
4 times Inverter 1 version INV1 Version (ex. 1412)
5 times Inverter 2 version INV2 Version (ex. 1412)
6 times EEP version EEP Version (ex. 1412)
7 times Automatically assigned address of the
units AUTO
SEG1 SEG2 SEG3, 4
Indoor unit: “A”
MCU: “C”
Indoor unit: “0”
MCU: “1”
Address
(ex: 07)
8 times Manually assigned address of the units MANU
SEG1 SEG2 SEG3, 4
Indoor unit: “A” Indoor unit: “0” Address
❋ I/U: Indoor unit
ENGLISH-82
Setting the MCU and Pipe Addresses (for HR Only)
You can set the MCU address, the MCU ports to use, and the address for each MCU port connected to each indoor unit.
It is for 2nd-generation MCU only. (MCU-S✴NEK2N,MCU-S4NEK3N,MCU-S1NEK1N)
Setting the MCU address and the MCU ports to use
You can set the MCU address and the MCU ports on the MCU PBA.
1
ON
2341
ON
2
ABCD
34 1
ON
2
EF
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
ABCDE F
MCU address
switch DIP switch
S/W option
DIP switch
1. Set the MCU address switch to a value. If two or more MCUs are installed, be sure to set a unique value for each MCU. For
the MCU address, you can set a value from 0 to 15.
2. For each MCU ports that are connected to an indoor unit through piping, set their DIP switch to ON. For other MCU ports,
set their DIP switches to OFF.
You can nd the address (A to F) of an MCU port on the indoor unit piping connection.
3. If two MCU ports are connected to an indoor unit through a Y-joint, set the relevant S/W option DIP switch to the
settings given in the following table:
S/W option DIP
switch No.
ON
(Individual connection)
OFF
(Shared connection)
1 Each of ports A and B Both ports A and B
2 Each of ports C and D Both ports C and D
3 Each of ports E and F Both ports E and F
❋ You cannot make a shared connection for the two ports B and C, and D and E at the same time.
ABC DE F
A
F
ABC DE F
B
D
E
4. Set the address of each MCU port that is connected to an indoor unit by taking the procedures in Setting the Pipe
Addresses Manually or Setting the Pipe Addresses Automatically. (Auto pipe pairing operation)
• If the following models are connected, set the pipe addresses manually by referring to Setting the Pipe
Addresses Manually.
- ERV plus (AM✴✴✴✴NKDE✴), OAP duct (AM✴✴✴✴NEPE✴), Hydro Unit (AM✴✴✴✴NBDE✴,
AM✴✴✴✴NBF✴✴), AHU kit (MXD-K✴✴✴AN, MCM-D✴✴✴N)
• If 1st-generation MCU (MCU-S✴NEE✴N) is installed, refer to the corresponding install manual.
CAUTION
ENGLISH-83
02 INSTALLING THE PRODUCT
Setting the Pipe Addresses Manually
You can use the wired or wireless remote control or the S-NET Pro 2 to set the pipe addresses for each indoor unit.
Setting by using the wired or wireless remote control (For how to operate the remote control
buttons, see the remote control user manual.)
1. Turn on both the indoor unit and the remote control.
2. Enter the “Option setting mode” on the remote control.
3. Set the address of each MCU port that is connected to an indoor unit by referring to the following table.
(You can also set the address of each indoor unit.)
Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6
Value
0A: Address setting
mode
0: The address of the
indoor unit will not
be set.
1: The address of the
indoor unit will be
set.
0 to 9: Hundreds
digit of the indoor
unit address
0 to 9: Tens digit
of the indoor unit
address
0 to 9: Units digit
of the indoor unit
address
Option SEG7 SEG8 SEG9 SEG10 SEG11 SEG12
Value
10
0: The RMC address
will not be set.
1: The RMC address
will be set.
00 to F: RMC group
channel
0 to F: RMC group
address
Option SEG13 SEG14 SEG15 SEG16 SEG17 SEG18
Value 20
0: The MCU
address will not
be set.
1: The MCU
address will be set.
0 to 1: Tens digit of
the MCU address
0 to 9: Units
digit of the MCU
address
A to F: MCU port
address
Option SEG19 SEG20 SEG21 SEG22 SEG23 SEG24
Value 300000
Examples> If the indoor unit whose address is not yet set is connected to port A on the MCU 1, set 0A0000-100000-
20101A-300000.
If the indoor unit whose address is set to 9 is connected to port B on the MCU 2, set 0A1009-100000-20102B-300000.
Setting by using S-NET Pro 2
f Set the pipe addresses by using Add-on > Change address on S-NET Pro 2. (For more information, see the S-NET Pro 2
Help.)
ENGLISH-84
Setting the MCU and Pipe Addresses (for HR Only)
Setting the Pipe Addresses Automatically (Auto pipe pairing operation)
You can use the Automatic pipe-address setting operation to automatically set the address of each MCU port that is
connected to an indoor unit.
If an MCU port is set incorrectly or a pipe between an MCU and an indoor unit is connected incorrectly, that indoor unit is
indicated.
Check items before running the Auto pipe pairing operation
1. Ensure that the service valve of the outdoor unit is open.
2. Ensure that the power cables and communication cables of the indoor and outdoor units are correctly connected.
3. Turn on the indoor and outdoor units 6 hours before running the Automatic pipe-address setting operation to warm up
both units suciently.
4. Before turning on the power, check whether the voltages and phases are correct by using a voltmeter and a phase tester.
- Check for the R, S, T, and N terminals: ensure that 380-415V is read between lines (R-S, S-T, T-R) and 200-240V (R-N, S-N,
T-N) between phases.
5. After the power is turn on, set the devices (indoor unit, MCU, and others) that are connected to the outdoor unit, and set
the options.
Note that, before the MCU port addresses are set, MCU port setting errors (E216, 217, 218) may occur. You can run the
Automatic pipe-address setting operation regardless of MCU port setting errors.
6. If the OAP(Outdoor Air Precessing) Duct or Hydro unit is connected, set the pipe addresses manually referring to [Setting
the Pipe Addresses Manually].
7. Check the operating temperature for the Automatic pipe-address setting operation:
If this operation is run at a temperature out of the operating temperature range, the addresses set automatically may be
incorrect. Set the pipe addresses manually by referring to Setting the Pipe Addresses Manually.
8. Auto pipe-pairing operation does not work within 3 minutes after power on and reset due to communication check.
[Operating temperature for the Auto pipe pairing operation]
45
35
10
10 32
Water Temperature (°C)
Indoor Temperature (°C)
Main cooling operation
Main heating operation
ENGLISH-85
02 INSTALLING THE PRODUCT
❋ Before running the Auto pipe pairing operation, be sure to close the front cabinet. If this operation is run with the front
cabinet open, the product may be damaged and the pipe addresses cannot be correctly recognized.
To run the Auto pipe pairing operation, take the following steps:
1. Press the K2 button 12 times on the B type main PBA of the outdoor unit to start the Auto pipe pairing operation.
(Display : .)
Water temperature < 35
°C30°C < Water temperature
Main heating operation Main cooling operation
Each step is indicated on the outdoor unit display. (The whole operation takes about 25 to 55minutes normally,
depending on the number of indoor units connected. However, it can be operated for up to 2 hours to protect the
compressor.)
- Step 1 (Start ) → Steps 2 to 8 (Setup ) → Step 9 (Check ) → Step 10 (Conrmation )
2. When the Auto pipe pairing operation nishes, the following data is shown on the outdoor unit display.
Result Outdoor unit display Description
Setting completed End
Setting error
E191
Indoor unit data
(displayed alternately)
Indoor unit data
- SEG 1,2 = indoor unit address / SEG 3,4 = error status
00: An MCU port is not disabled, or a
pipe is not connected.
01: Cooling only indoor unit is
connected to MCU.
02: The shared setting for two ports
is incorrect.
Example) When the MCU port connected to the indoor unit 12 is
disabled, E191 and 1200 are displayed alternately
- If two or more indoor units have setting errors, the data about the
next indoor unit is displayed each time you press the K2 switch.
• If the MCU ports to use are set incorrectly, the Auto pipe pairing operation may stop due to high-pressure or low-
pressure protection control or the data about the indoor unit that has a MCU port setting error may be incorrect. Ensure
that the MCU ports to use are set correctly.
• Depending on the indoor and water temperature, the Auto pipe pairing operation may stop due to protection control.
• If an error occurs while the Auto pipe pairing operation is running, check the error code and take actions.
• If you cannot nish the Auto pipe pairing operation because of the previous reasons, set the pipe addresses manually by
referring to Setting the Pipe Addresses Manually.
CAUTION
ENGLISH-86
Water pipe installation
It is recommended to use closed circuit cooling tower. If open cooling tower is applied, use intermediate heat exchanger and
make sure that supplied heat source water system is closed circuit.
Water pipe installation
T
T
Water pipe IN
<Pipe connection part>
Heat exchanger
50 or more
Water pipe
Insulator
80 mm or more
Finishing tape Anti-vibration pad
Support to prevent
loading on the pipe
Strainer (must be
purchased separately)
Protection tube
Ball valve
2Way solenoid valve
Flange
Water pipe
<Water pipe diagram>
<Connecting pipe before test operation>
Water pipe
connection
hose
Pipe for cleaning
Flexible joint
(absorb vibration)
Flow switch
(Mandatory
connection)
❋ From above illustration, ow switch (mandatory) and 2way solenoid valve (optional) must be at least equivalent to the
specication recommended by our company and they should be installed horizontally.
When water pipe circuit freezes, it will cause damage to the plate type heat exchanger and therefore
preventive measure must be taken according to the situation.
• Drain remaining water in the water pipe when it will not be used for long period of time
• Constantly operate the water pump to circulate the water within the water pipe
• Install self-regulating heat cable on the water pipes
CAUTION
❋ Design condition
Type Circulating
water Operation Inlet water temperature Remarks
Main usage range
Usage range limit Note 3)
Heat source
water Water loop Cooling 20 ~ 35 °C 10 ~ 45 °C Refer to
'Cooling water
management' on
page 103
Heating
Ground heat
source Note1) Ground loop Cooling 15 ~ 35 °C 10 ~ 45 °C
Heating 5 ~ 25 °C -5 ~ 45 °C (-10 ~ 45 °C) Note 2)
Note 1): Anti-freeze must be used when temperature of water inlet for heating is below 10°C or ground heat source is
used. Maintain appropriate concentration level of anti-freeze according to temperature of water inlet.
Note 2): Strict management of anti-freeze concentration level is required. Consult Samsung before application.
Note 3): When inlet water temperature is outside of limit, consult Samsung before application.
ENGLISH-87
02 INSTALLING THE PRODUCT
1. Refer to following table, for diameter of the outdoor unit connection part where water pipe will be connected. If you
install outdoor units with dierent capacities, install a ow control valve to secure rated ow for each outdoor unit. Socket
must be connected within below tightening torque. If the tightening torque exceeds below value, it may cause product
breakage.
AM080/100/120/200FXWA✴✴ AM300KXWA✴✴
PT 1-1/4 (Internal thread) PT 2 (Internal thread)
Outer diameter of water pipe (mm) Tightening torque (N·m)
10 ~ 20 25
21 ~ 30 50
31 ~ 50 100
51 ~ 80 220
81 ~ 115 600
2. Use certied parts for water pipe system and the water pressure of the water pipe system connected to outdoor unit
must remain under 1.96 MPa.
3. Outdoor unit water pipes must be equipped with valves and other instrumentations as shown in the gure on the
previous page. Strainer and ow switch must be installed within 1~2 m from the entrance pipe of the outdoor unit.
(Strainer must be installed on entrance side)
- When strainer is not installed, sand, dust or rust debris may cause product breakage.
- Make sure to install a ow switch that works at minimum discharge. When optimal discharge level is not reached, heat
exchanger within the outdoor unit may break.
4. Water inlet pipe is located at the bottom part of the heat exchanger and the water outlet pipe is at the top part of the
heat exchanger.
5. Outdoor unit must be installed indoor at room temperature and the water inlet and outlet of the outdoor unit must be
insulated with the heat exchanger as shown in the illustration.
6. Damp-proof, cold reserving and insulation work must be done thoroughly to prevent condensation from forming on the
surface of the product and drain pipes of indoor/outdoor units. When the necessary work is not done thoroughly, you will
waste energy caused by thermal loss and may get property damage during cold seasons when water pipe freezes and
bursts.
7. If you stop the product for long time or in night time, water pipe circuit may freeze naturally when the temperature
around the outdoor unit is under 0°C. When water pipe circuit freezes, it will cause damage to the plate type heat
exchanger and therefore preventive measure must be taken according to the situation.
- Drain remaining water in the water pipe
- Operate continuous water circulation pump during outdoor unit operation, 1~5 minutes before the operation and 1~5
minutes after operation stops
- Install self-regulating heat cable on the water pipes
8. When inlet water temperature is lower than 10°C, appropriate anti-freeze must be used according to the temperature. Set
the outdoor unit option switch (A Type PBA : K21/K22, B Type PBA : Key option) according to the usage temeprature.
- When lowest inlet water temperature is -5°C, freezing point of anti-freeze must be lower than -8°C
- When lowest inlet water temperature is -10°C, freezing point of anti-freeze must be lower than -15°C
9. Install number of auto air vent valve at a point where air may remain within the pipe (such as vertical water pipe). If the
air within the pipe is not vented, it may cause performance decrease or corrosion on the product or pipes.
10. Keep the inlet water temperature within 'Main usage range'. If not, product may not work continuously.
11. Water scale may occur on the plate type heat exchanger depending on the water quality and the type of plate heat
exchanger so regular chemical cleaning is necessary. When installing water pipes, install a heat source water shut-o
valve and also install the ushing pipe with a ball valves (for chemical cleaning) on the pipe installed between the shut-
o valve and the outdoor unit.
ENGLISH-88
Water pipe installation
Outdoor unit
Ball valve
(used as cleaning hole)
Cleaning device
Auto air discharge valve
Strainer for
pump
Strainer for
outdoor unit
Water inlet pipe
Water outlet pipe
Plate
type heat
exchanger
Flushing pipe
(Install it when cleaning)
Ball valve
(used as cleaning hole)
Ground heat or
closed circuit
cooling tower
1. Before trial operation, connect the cleaning pipes installed on inlet and outlet as shown in above illustration. Then, take
appropriate measures (such as blind ange etc) to stop the circulation water from entering the outdoor unit plate type
heat exchanger, and use circulating pump to remove foreign substance within the water pipes and clean the strainer.
When foreign substances accumulates on outdoor unit plate type heat exchanger, it may break the heat exchanger or
cause problem to it.
2. For legal facilities, install digital sensor and ow meter on the water pipe for monitoring.
• Open the valve of the water pipe connected to the outdoor unit after ushing (cleaning foreign substances in
water pipe) is completed.
• Check that air is vented from the water pipe and circulation amount is secured before opening the service valve
on the refrigerant side of the outdoor unit.
• When circulating water stops during outdoor nit operation, it may cause breakage on plate type heat exchanger.
Check the ow of circulation with ow switch or other devices.
CAUTION
ENGLISH-89
02 INSTALLING THE PRODUCT
External contact connection
Flow switch connection (Mandatory connection)
f When ow switch is used, it will receive signal of the heat source water circulation and detects if there is any problem on
water circulation before operating the outdoor unit.
f When there is no contact signal input to the ow switch, it will be diagnosed as 'Problem with the heat source water
circulation' and outdoor unit will stop operating to protect outdoor unit.
Flow switch turns on when ow
amount increases
Connect ow switch wire to the FLOW-SW IN terminal regardless of the polarity
PUMP OUT 2WAY V/V FLOW S/W Flow control
Water Hub PBA
• Pump out, 2way solenoid valve, ow switch can be used individually or together.
• For installation location of the 2way solenoid valve and ow switch, Refer to 'Water pipe diagram' on page 86.
CAUTION
Pump out connection
f When the main pump is installed to common water pipe, powerless contact signal will be provided. (Refer to 'Installation
example of extra controller such as 2way solenoid valve and pump etc.' on page 91.)
Pump
Power
source
Controller
PUMP OUT 2WAY V/V FLOW S/W Flow control
Water Hub PBA
ENGLISH-90
Explanation of optional functions
2Way solenoid valve
f When installing multiple number of outdoor units to a common water pipe, 2way valve will cut the cooling water supply
to an outdoor unit that is not operating, so it will increase the overall eciency of the system. 2Way solenoid valve will
operate automatically depending on the operation status of the indoor and outdoor units. (Outputs contact signal)
f You may select either internal or external power cable connection for the 2way solenoid valve.
PUMP OUT 2WAY V/V FLOW S/W Flow control
(External power)
Power source
(Internal power)
Water Hub
PBA
External controller
2Way solenoid valve
❋ Connect the 2way solenoid valve cable to the 2way valve terminal regardless of the polarity.
(However, Use external power if the load of solenoid valve is maximum 250 V and current over 0.2 A.)
Flow control
f After setting the outdoor unit option switch, you may connect variable ow control valve that is controlled at 0 ~ 10 V of
input signal.
f If the power of variable ow control valve is AC 220-240V, you may use the internal power of the outdoor unit.
f When applying the DC 24 V ow control valve, use Transformer kit MVR-TK024 (optional).
f Use the external power if the load of variable solenoid valve is maximum 250 V and current over 0.2 A.)
f Output range of the variable ow control valve is dierent depending on the setting of the outdoor unit option switch
(Refer to 'Setting key operation and checking the view mode with tact switch' on page 76)
PUMP OUT 2WAY V/V FLOW S/W Flow control
(External power)
Power source
(Use internal
power)
Water Hub
PBA
❋ When valve load is over 0.2 A use external power.
Variable ow
control valve
ENGLISH-91
02 INSTALLING THE PRODUCT
Wiring method for optional functions
Installation example of AC 220-240 V, direct operation type 2way solenoid valve
PUMP/2Way solenoid valve controller (PBA)
Controller
Outdoor unit
2Way solenoid valve
Flow switch
AC 220-240 V AC 220-240 V
2Way solenoid valve
OUT
PUMP OUT
PUMP F/B IN
Relay
Relay
Caution for wiring
Internal part of outdoor unit External part of outdoor unit
f 2way solenoid valve is a type that works at AC 220-240 V 50/60 Hz and supports product with 0.2 A or low.
- For 2way solenoid valve with over 0.2 A, connect external power.
- For external power cable for 2way solenoid valve must use 600 V ame-resisting double layered cable.
f Product will not operate when ow switch is not installed.
Installation example of extra controller such as 2way solenoid valve and pump etc.
PUMP/2Way solenoid valve controller (PBA)
Controller
Outdoor unit
2Way
solenoid
valve
Flow switch
AC 220-240 V AC 220-240 V
2Way solenoid
valve OUT
PUMP OUT
PUMP F/B IN
Relay
Relay
Caution for
wiring
PUMP
AC 220-
240 V
2Way solenoid valve, Pump controller
2Way solenoid
valve, Pump
controller
Internal part of outdoor unit External part of outdoor unit
FUSE
f If the operation type of 2way solenoid valve is dierent, use extra controller.
- Also use external controller for pump.
- Outdoor unit only provides contact signal needed for 2way solenoid valve and pump operation. Therefore, do not use
the contact signal from the air conditioner directly.
f Product will not operate when ow switch is not installed.
ENGLISH-92
Explanation of optional functions
Flow chart of outdoor unit external contact controller
Indoor unite remote controller ON
2Way solenoid valve On
Pump On
System operation
No
Yes
Flow switch On System stops
f Flow switch detector circuit must be detected for more than 30 seconds within 3 minutes after rst operation signal
output of the pump. (Outdoor unit will not operate when there is no detection.)
f Outdoor unit will stop if the contact of ow switch becomes ‘O’ even during the operation.
f When outdoor unit stops, cooling water pump will also stop.
f Even when you are not using the external contact control from DVM outdoor unit, you may use other external control
methods such as DDC, PLC or BMS and apply above ow chart. Also apply control for freezing prevention of the water
circulation during winter season.
f If you control pump/2way solenoid valve with extra controller, make sure to apply in control so that pump/2way solenoid
valve operates for 3 minutes after the outdoor unit stops operating.
ENGLISH-93
03 OTHERS
Things to check after completing the installation
1. Before supplying the power, use DC 500 V insulation resistance tester to measure the power (3 phase: R, S, T/ 1 phase: L,
N) terminal and insulation resistance between the outdoor unit groundings.
- Measurement should be over 30M.
2. Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase.
- R, S, T, N terminal: check if the voltage is within 380-415V between wires (R-S, S-T, T-R) and 220-240V between phases
(R-N, S-N, T-N) before turning on the switch.
• Never measure the communication terminal since communication circuit may get damaged.
• Check for short-circuit of the communication terminal with a general circuit tester.
CAUTION
N
T
S
R
< ELB >
230V
400V400V
400V
230V 230V
3. Check if the R-410A indoor units are connected.
4. When N phase is not correctly connected to R, S and T phase, over-voltage protection control will be in eect and it will
cut-o the power of the PCB. Check the power cable connection of the N phase if the PCB is not turned on.
5. Check the following after the installation is completed.
Installation work
Outdoor unit
• Have you checked the external surface and the inside of the outdoor unit?
• Is there any possibility of short-circuit caused by the heat of an outdoor unit?
• Is the place well-ventilated and ensures space for service?
• Is the outdoor unit xed securely to withstand any external force?
Indoor unit
• Have you checked the external surface and the inside of the indoor unit?
• Is there enough space for service?
• Have you checked if the center of the indoor unit is ensured and it is installed
horizontally?
Refrigerant pipe work
• Have you selected correct pipes?
• Are the liquid and gas valve open?
• Is the total number of connected indoor units within the allowable range?
• Are the length and the height dierence between the refrigerant pipes
within the allowable range?
• Are the branch joints properly installed?
• Did you check the connection of liquid and gas pipes?
• Have you selected correct insulator for pipes and insulated them correctly?
• DId you insulate the pipes and connection part correctly?
• Is the quantity of the additional refrigerant correctly weighed in? (You must
record the amount of additional refrigerant on the service record paper
placed inside of the outdoor unit.)
ENGLISH-94
Things to check after completing the installation
Drain pipe work
• Have you checked if the drain pipes of the indoor and outdoor unit are
connected together?
• Have you completed the drain test?
• Is the drain pipe properly insulated?
Electrical wiring work
• Are the power cable and communication cable tightened rmly on the
terminal board within the range of rated tightening torque?
• Have you checked for cross-connection of the power and communication
cables?
• Have you performed the earthing work 3 to the outdoor unit?
• Did you make sure to use 2-core cable (not multi-core cable) for the
communication cable?
• Is the length of the wire within allowed range?
• Is the wiring route correct?
Setting address
• Did you set the address of the indoor and outdoor units properly?
• Did you set the address of the indoor and outdoor units properly? (When
using multiple remote controllers)
Option • If there is a possibility of the outdoor unit from vibrating, check whether the
anti-vibration frame is correctly installed.
Inspection and test operation
Precautions before trial operation
• When the outdoor temperature is low, turn on the main power 6 hours before beginning the operation.
- If you start the operation immediately after turning on the main power, it may cause serious damage to the
part within the product.
• Do not touch the refrigerant pipe during or right after the operation.
- Refrigerant pipe may be hot or cold during or right after the operation depending on the status of the
refrigerant which ows through the refrigerant pipe, compressor and other parts of the refrigerant cycle. If you
touch the refrigerant during or right after the operation, you may get burns or frostbite.
• Do not operate the product with its panel or protection nets o.
- There is risk of personal injury from the parts that rotates, heated or with the high voltage.
• Do not cut o the main power right after stopping the operation.
- Wait for at least 5 minutes before turning o the main power. If not, water leakage or other problems may
occur.
• Connect all the indoor units and the power supply for the outdoor unit and run auto address setting. Run auto
address setting even after changing the indoor unit PCB.
CAUTION
ENGLISH-95
03 OTHERS
Checklist before auto trial operation
1. Check the power cable and communication cable of the indoor and outdoor unit.
2. Supply power to the outdoor unit 6 hours before trial operation to pre-heat the crank case heater.
3. Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase.
- R, S, T, N terminal: check if the voltage is within 380 -415 V between wires (R-S, S-T, T-R) and 220-240 V between phases
(R-N, S-N, T-N).
4. When the power is supplied, outdoor unit will execute tracking to check the indoor unit connection and other optional
functions.
5. Write down the installation report on the service history report paper attached on the front part of the control box.
• Supply power to the outdoor unit 6 hours before auto trial operation to pre-heat the crank case heater.
CAUTION
6. Guaranteed range of auto trial operation
For precise judgment, you must perform auto trial operation in below indoor/outdoor temperature condition.
40
45
30
20
10
35
25
15
5
0
0 5 10 15 20 25 30 35 40 45
Indoor temperature (°C)
Cooling
Heating
Inlet water temperature (°C)
- In Auto trial operation, product will automatically select either cooling or heating mode and operate in selected mode.
- In the temperature range marked with slashed pattern, system protection control may trigger during operation.(If the
system protection control is enabled, it can be hard to get the precise judgment after the auto trial operation.)
- When the temperature is outside of guaranteed range, accuracy of judgment on auto trial operation may decrease near
boarder line area.
ENGLISH-96
Inspection and test operation
Auto trial operation
1. If the Auto Trial Operation is not completed, normal operation will be prohibited.
- When the auto trial operation is not completed, UP (UnPrepared) will appear on the segment after the communication
check and restrict compressor from operating. (UP Mode will be cleared automatically when auto trial mode is
completed.)
- Auto trial operation may take 20 minutes to maximum 2 hours depending on the operation status.
- During auto trial operation, noise can be generated due to vavle inspection. (Check the product if abnormal noise
occurs continously)
2. When error occurs during auto trial operation, check the error code and take appropriate measures.
- Refer to next couple of pages when E503, E505 or E506 error occurs.
- Refer to service manual if you need inspection or when other errors occur.
3. When auto trial operation ends, use S-NET pro or S-CHECKER to issue a result report.
- Refer to service manual for further actions if you have any items with "inspection required" sign on the result report.
- After taking appropriate measure for the items with "inpection required" sign, run the auto trial operation again.
4. Check the following items by running trial operation (cooling/heating).
- Check if cooling/heating operation performs normally.
- Individual indoor unit control: Check for air ow direction and fan speed.
- Check for abnormal operation noise from the indoor and outdoor unit.
- Check for proper draining from the indoor unit during cooling operation.
- Use S-NET pro to check the detail operation status.
5. Explain to the user how to use the air conditioner according to the user's manual and provide this installation manual to
the user.
• Make sure to close the front part of the outdoor unit
cabinet during operation. If you operate the unit with
the front cabinet open, it may cause damage to the
product and you may not get the precise data from
S-NET pro.
CAUTION
ENGLISH-97
03 OTHERS
Inspection and trial operation
Measures to take when an E503 error occurs (When the “inspection required” message appears on
the S-NET pro report)
1. Run trial operation mode for more than 30 minutes
2. Run Fan mode for more than 10 minutes
3. Restart the auto trial operation
Ye s
Ye s
Yes
Open the service valve of the outdoor unit
No.
Is the service valve of the outdoor unit
open?
Check the 4way valve and Main EEV
No.
Is 4way valve and main EEV operating
normally?
Check for leakage. Perform vacuuming and
charge refrigerant
No.
Is the quantity of the refrigerant correct?
❋ 4-Way valve abnormal operation symptoms:
- Refrigerant noise increases when the compressor is in operation and the inlet pipe temperature (H/P: Suction, H/R:
Suction 2) remains over 10 °C when compared to the low pressure saturation temperature.
- During heating operation, the temperature of the EVa. in/out maintains a calue of less than 0 °C.
❋ Main EEV abnormal operation symptoms:
- During heating operation, an error occurs when controlling the degree of the superheat on the compressor inlet.
: If there is an operation error whilst the EEV is fully open, the target degree of superheat (1 °C) cannot be achieved
(below 0 °C) and the discharge temperature of the compressor is low.
: If there is and operation error whilst the EEV is fully closed, the low pressure will decrease and the degree of
superheat on the compressor inlet increases excessively.
• If the service valve needs to be detected, corresponding outdoor unit will display the error.
• If the service valve needs to be detected, auto detection mode will end. Check both gas pipe and liquid pipe
service valves when detecting service valve.
• When 4way valve, Main EEV detection is needed, run heating trial operation for more than 1 hour and analyze
the data to check for a problem.
• If the opreation range is not within guaranteed range, error may occur even though the product is normal.
CAUTION
ENGLISH-98
Inspection and trial operation
Measure to take when E505, E506 error occurs
End
Yes
Yes
Enable vacuum mode on all outdoor units
Disable vacuum mode on all outdoor units
No.
Is the service valve of the outdoor unit
open? Open the service valve of the outdoor unit
No.
Does the value on the pressure
sensor of the installed outdoor unit
satisfy the following?
"Max./Min. value dierence of low
pressure > 2"
"Max./Min. value dierence of high
pressure > 2"
Reset outdoor unit
Run trial operation
Analyze cycle data
Check/replace the abnormal pressure sensor
• When the auto trial operation for pressure sensor is executed before the pressure of the outdoor unit is equalized
(when there is little dierence between high and low pressure), error may occur even though the product is
normal.
• If the pressure sensor needs to be detected, all outdoor units will display the error.
• If the pressure sensor needs to be detected, auto trial operation mode will end.
• To check for the pressure sensor with the problem, run trial operation for more than 1 hour and analyze the data
to check for a problem.
CAUTION
ENGLISH-99
03 OTHERS
Automatic refrigerant amount checking function
This function detects the amount of refrigerant in the system
Start
Press the Tact switch "K2" 5 times
Check the amount of refrigerant
Judge the amount of refrigerant
Judgment on the amount of
refrigerant: Normal / Excessive /
Insucient
Judgment not
available
Judgment not
available
Connect S-Net Pro Judge the amount of refrigerant
Judgment on the amount of
refrigerant: Normal / Excessive /
Insucient
Satisfy the temperature condition Satisfy the temperature condition
Check the amount of refrigerant
Input S-CHECKER signal
Check stability Check stability
End
Yes
No No
Yes
ENGLISH-100
Automatic refrigerant amount checking function
• When the temperature is outside of guaranteed range, you can not obtain an accurate result.
- Indoor : 20~32 °C
- Water temperature : 15~40 °C
• If the operation cycle is not stable, refrigerant amount detection operation may end.
• Accuracy of the results may decrease if the product is not operated for a long period time before the refrigerant
amount detection function operation is activated. Use the refrigerant amount detection operation function after
operating the product in cooling mode for at least 30 minutes.
• Depending upon the operational environment, a system protection operation may be triggered. As a result, the
refrigerant amount detection result may be inaccurate.
Actions to take after the detection result
• Excessive amount of refrigerant : Discharge 5% of the detected amount of refrigerant and restart the refrigerant
amount detection operation.
• Insucient amount of refrigerant : Charge 5% of the detected amount of refrigerant and restart the refrigerant
amount detection operation.
• Insucient degree of supercooling : Charge 10 % of the detected amount of refrigerant and restart the
refrigerant amount detection operation.
• Judgment not available : Check if the refrigerant amount detection operation was executed within guaranteed
temperature range. Execute trial operation to check if there's any other problems on the system.
CAUTION
Precaution before trial operation
1. Water quality management
- It is not possible to disassemble the plate heat exchanger for cleaning or part replacement. therefore, to prevent
corrosion or water scale on the plate type heat exchanger, you must manage the cooling water quality in compliance
with standard of cooling water.(Refer to page 103.)
- If the temperature of water is higher than room temperature, make sure to keep the concentration of chloride ion
below 100 ppm to prevent corrosion and the water hardness should be below 150 mg CaCO3/L to prevent water scale.
When a scale inhibitor is used, make sure to use the a type that is corrosion-free to the stainless steel and copper.
2. Water ow management
- Insucient water ow will lead to accidents related to frozen plate type heat exchanger. Check to make sure if there
is any decrease in amount of water ow due to blocked strainer, problem on air ventilation or circulation pump after
checking the temperature/pressure dierence between the inlet and outlet of the plate type heat exchanger. If the
temperature/pressure dierence exceeds optimal range, stop the operation until remedial action is taken before the
operation is restarted.
3. Counter-measures after E436 error (anti-freeze control) display
- If E436 is displayed during operation, make sure to take care of the cause of problem before re-starting the operation.
Water may freeze partially from the point when E436 is displayed. If you re-start the operation before the problem
has been taken care of, plate type heat exchanger will shutdown and it will be impossible to melt the ice. If the water
remains frozen, plate type heat exchanger will break and cause refrigerant leakage or water may enter into the
refrigerant cycle.
ENGLISH-101
03 OTHERS
Maintenance
Precautions on plate type heat exchanger maintenance
❋ Make sure to tell the user to keep this installation manual.
1. When the product was not operated for long period of time, check the followings:
- Check the water to see if the water quality is meets the standard.
- Clean the strainer.
- Check to see if there is enough amount of water ow
- Check to see if there is any problems on the water pressure, amount of water and the water temperature at inlet/outlet.
- If you are using ground heat source, make sure to check the concentration level of the anti-freeze before the operation
to maintain the freezing point at below -8 °C (Refer to 'Ground heat exchanger circulation water (anti-freeze) usage
standard (mandatory checklist)' on page 105)
2. It is not possible to disassemble the plate heat exchanger for cleaning or part replacement. Therefore it has to be cleaned
by following methods.
- Check if there is any cleaning hole for chemical cleaning at the inlet water pipe. For water scale cleaning use diluted
(down to 5%) citric acid, oxalic acid, acetic acid, phosphoric acid. However, do not use a cleaning solution containing
hydrochloric acid, sulfuric acid or nitric acid since they are highly corrosive.
- Check if there is valve on the inlet/outlet of the plate type heat exchanger.
- Connect a exclusive pipe for cleaning to the inlet/outlet pipe of the plate type heat exchanger and ll the detergent
at the temperature of 50~60˚C and circulate the detergent for about 2~5 hours. Cleaning time can be dierent
depending on the temperature of detergent or degree of water scale. Judge the degree of water scale removal by the
color of water detergent.
- After cleaning, discharge the detergent within the plate type heat exchanger and ll the plate type heat exchanger
with a water mixed with 1~2% of sodium hydroxide or sodium bicarbonate. Circulate the water mixture for 15~20
minutes to neutralize.
- After neutralizing the pipes, rinse the plate type heat exchanger with distilled water.
- If you are using the detergent sold at local retail stores, make sure that it doesn't cause any corrosion to the stainless
steel or copper.
- For detail information on cleaning method (and proper use of detergent), contact the detergent manufacturer.
3. After cleaning, check to see if it is possible to operate normally.
ENGLISH-102
Maintenance
Recommended number of inspection for normal operation
Inspection list Inspection standard Number of inspection Side eects when
inadequate
Forced drainage
Have you set the electric conductivity value
properly?
Once a week Corrosion, water scale or
slime may occur
Is electric conductivity sensor working properly?
Is auto valve working properly?
Cooling water
and water quality
inspection
Is cooling water corrupted or have oating
particles?
Once a month Corrosion, water scale or
slime may occur
Is there rust water?
Is there any red tides?
Is the concentration of the antifreeze being
maintained?
Once a year (before
winter season) -
Internal/external
part of the cooling
tower
Is there any water scale or slime?
Once a month Corrosion, water scale or
slime may occur
Is there any signs of corrosion on the metal part?
Is there any water plant?
Heat source water
device
Have you set the make-up water supply value
properly?
Daily
Operation problem at the
cooling tower or intensied
water concentration
Is there any excess or deciency of the make-up
water?
Is the water level within the tank normal for
operation?
ENGLISH-103
03 OTHERS
Cooling water management
1. Standard of cooling water quality for air conditioning and the number of water quality inspection
❋ Make sure to comply the standard for water quality management.
f Cooling water with high level of foreign substances can cause pipe corrosion or creation of water scale which eects the
product's performance and lifespan. (Use the appropriate heat source water according to the below table) If the system
water is sourced from anything other than the local water supply, make sure to check the quality of water.
❋ For water quality management on the heat source water of closed circuit water cooling must be done according to the
below table. If the water quality is not managed according to the below table, it may decrease the performance of air
conditioner and cause serious problem on the product.
Classication Item
Closed circuit system Eects Recommended
number for water
quality inspection
Heat source
water Make-up water Corrosion Scale
Standard
value
pH[25 °C] 7.0~8.0 7.0~8.0 ❍❍
Twice a month
Electric conductivity [25 °C]
(mS/m) 30 or below 30 or below ❍❍
Chloride ion (mg Cl-/L) 50 or below 50 or below ❍
Once a month
Sulfate ion (mg S042-/L) 50 or below 50 or below ❍
M alkali level [pH 4.8](mg
CaCo3/L) 50 or below 50 or below ❍
Total hardness (mg CaCo3/L) 70 or below 70 or below ❍
Calcium hardness (mg
CaCo3/L) 50 or below 50 or below ❍
Ionized silica (mg SiO2/L) 30 or below 30 or below ❍
Reference
Iron (mg Fe/L) 1.0 or below 0.3 or below ❍❍
Once a month
Copper (mg Cu/L) 1.0 or below 1.0 or below ❍
Sulfate ion (mg S2-/L) Not to be
detected
Not to be
detected ❍
Ammonium ion (mg NH4+/L) 0.3 or below 0.1 or below ❍
Residual chlorine (mg Cl/L) 0.25 or below 0.3 or below ❍
Free carbon dioxide (mg
CO2/L) 0.4 or below 0.4 or below ❍
Stability index - - ❍❍
• Circle (O) denotes the factor relevant to corrosion or water scale.
• When the water temperature is over 40˚C, steel without protective coating may corrode when exposed to water.
Applying corrosion prevention material or degassing can be an eective measure to prevent corrosion.
• For the cooling water and the make-up water, used under closed circuit water system with closed circuit cooling
tower, should satisfy the standard shown in above table.
• Supplied water or make-up water should be tap water, industrial water or groundwater. Puried water,
neutralized water and softened water should not be supplied.
• 15 items in the above table is a typical factor for corrosion and/or water scale.
CAUTION
ENGLISH-104
Cooling water management
2. Operation range of water
f When the owrate of cooling water is out of the operation range, stop the outdoor unit and take care of the cause before
re-start the operation (Operation range : 60~120% of the standard the owrate of cooling water)
Section
Standard condition
Flowrate of cooling water (L/min)
AM080FXWA✴✴ AM100FXWA✴✴ AM120FXWA✴✴ AM200FXWA✴✴ AM300KXWA✴✴
Cooling 80 96 114 190 285
Heating
Section
Operation range
Flowrate of cooling water (L/min)
AM080FXWA✴✴ AM100FXWA✴✴ AM120FXWA✴✴ AM200FXWA✴✴ AM300KXWA✴✴
Cooling 48~96 58~115 68~137 114~228 170~342
Heating
80
70
60
50
40
30
20
10
050.00100.0 150.0
Cooling Water Pressure Drop (kPa)
Flowrate of cooling water (L/min)
AM080FXWA✴✴
AM100FXWA✴✴
AM120FXWA✴✴
80
70
90
60
50
40
30
20
10
0
50 1000 150 200 250
Cooling Water Pressure Drop (kPa)
Flowrate of cooling water (L/min)
AM200FXWA✴✴
80
70
60
50
40
30
20
10
0
1000 200 300 400
Cooling Water Pressure Drop (kPa)
Flowrate of cooling water (L/min)
AM300KXWA✴✴
ENGLISH-105
03 OTHERS
3. Ground heat exchanger circulation water (anti-freeze) usage standard (mandatory checklist)
When using ground heat source, use anti-freeze to manage the freezing point. If you do not use anti-freeze, it will cause the
pipes to freeze and burst. Note that the manufacturer does not take responsibility for any damage caused.
1) All the circulating water (anti-freeze) and additives (corrosion inhibitor, bacteria inhibitor, foam inhibitors) must
be used after consulting with the business ordering party or supervisor for its impact on environment, toxicity,
corrosiveness, harmfulness to human and management plan.
2) Contractor must take extra care regarding on handling, packaging and transporting regulations and procedure of the
anti-freeze.
3) Do not use the anti-freeze that is harmful to humans or equipment. In addition, anti-freeze must be injected to the
pipe according to specication and concentration level that is actually required by system. (Do not directly inject
undiluted solution, consult business ordering party or supervisor when undiluted solution was brought to the site)
4) Before injecting the anti-freeze, evacuate any air that may remain in the system and apply pressure to check for
leakage.
5) User must monitor and manage periodically to maintain initially designed concentration level of the anti-freeze.
If the concentration level decrease due to leakage or over certain period of time, it may cause due to pipe to freeze
and burst.
6) Usage condition of the anti-freeze when ground heat exchanger is installed (mandatory)
- Flash point: Flash point of the anti-freeze must be over 90 °C.
- Biochemical oxygen demand: Amount of oxygen in 1 g of anti-freeze at 10 °C must be within 0.1~0.2 g and this
value must be maintained for 5 days.
- Freezing point: Concentration level of the anti-freeze must be maintained above freezing temperature.
- Toxicity: LD50 per each 1 kg of anti-freeze must be less than 5 g.
- Storage stability: It must not be separate when heated or cooled, and also turbidity should not be increased.
- Corrosion resistance: It must be corrosion resistant to all the metallic material used for ground heat pumps and
pipes.
- Scale: Scale that has been accumulated on the plate type heat exchanger for one year of performance should not
cause performance decrease over 15%.
4. Standard data for status of Anti-freeze (Based on temperature of anti-freeze at 15 °C)
Type of brine Concentration [% Wt.] Freezing temperature Density [kg/m3]
Ethylene glycol
10 -3.2 1014.87
20 -7.8 1031.39
30 -14.1 1047.07
40 -22.3 1061.65
Propylene glycol
10 -3.3 1009.75
20 -7.1 1020.91
30 -12.7 1030.51
40 -21.1 1038.65
ENGLISH-106
Appendix
Model specication (Weight and dimension)
Type Model Net weight Net dimension(W*H*D)
Outdoor unit
AM080FXWANR 160.0 kg 770*1000*545 mm
AM100FXWANR 160.0 kg 770*1000*545 mm
AM120FXWANR 160.0 kg 770*1000*545 mm
AM200FXWANR 240.0 kg 1100*1000*545 mm
AM300KXWANR 282.0 kg 1100*1000*545 mm
This product is RoHS compliant
SAMSUNG ELECTRONICS CO., LTD.
107, Hanamsandan 6beon-ro, Gwangsan-gu, Gwangju-si, Korea 62218
4BNTVOH&MFDUSPOJDT
Service Department
PO Box 12987, Blackrock, Co. Dublin. Ireland
or
Blackbushe Business Park, Yateley, GU46 6GG. UK