LG ARUN080LTE4 Installation guide

ENGLISH
ITALIANO
ESPAÑOL
FRANÇAIS
DEUTSCH
PORTUGUESE
ΕΛΛΗΝΙΚΆ
INSTALLATION MANUAL
AIR CONDITIONER
MAGYAR
www.lg.com
POLSKI
P/NO : MFL67221410
NEDERLANDS
• Please read this installation manual completely before installing the product.
• Installation work must be performed in accordance with the national
wiring standards by authorized personnel only.
• Please retain this installation manual for future reference after reading
it thoroughly.your set and retain it for future reference.
2
TIPS FOR SAVING ENERGY
ENGLISH
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
IMPORTANT SAFETY INSTRUCTIONS
3
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product
! WARNING
It can result in serious injury or death when the directions are ignored
! CAUTION
It can result in minor injury or product damage when the directions are ignored
! WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.
Installation
• Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the instructions given in this manual and always use a special circuit.
- If the power source capacity is inadequate or electric work is performed improperly, electric shock
or fire may result.
• Ask the dealer or an authorized technician to install the air conditioner.
- Improper installation by the user may result in water leakage, electric shock, or fire.
• Always ground the product.
- There is risk of fire or electric shock.
• Always intstall a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• For re-installation of the installed product, always contact a dealer or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• Do not store or use flammable gas or combustibles near the air conditioner.
- There is risk of fire or failure of product.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Prepare for strong wind or earthquake and install the unit at the specified place.
- Improper installation may cause the unit to topple and result in injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
• Use a vacuum pump or Inert(nitrogen) gas when doing leakage test or air purge. Do not compress
air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• When installing and moving the air conditioner to another site, do not charge it with a
different refrigerant from the refrigerant specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and the unit may be damaged.
• Do not reconstruct to change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly,
or parts other than those specified by LGE are used, fire or explosion may result.
• Ventilate before operating air conditioner when gas leaked out.
- It may cause explosion, fire, and burn.
• Securely install the cover of control box and the panel.
- If the cover and panel are not installed securely, dust or water may enter the outdoor unit and fire
or electric shock may result.
• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant
concentration from exceeding the safety limit when the refrigerant leaks.
- Consult the dealer regarding the appropriate measures to prevent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, harzards due to lack
of oxygen in the room could result.
Operation
• Do not damage or use an unspecified power cord.
- There is risk of fire, electric shock, explosion, or injury.
• Use a dedicated outlet for this appliance.
- There is risk of fire or electrical shock.
• Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
• Do not touch the power switch with wet hands.
- There is risk of fire, electric shock, explosion, or injury.
• When the product is soaked (flooded or submerged), contact an Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious not to touch the sharp edges when installing.
- It may cause injury.
• Take care to ensure that nobody could step on or fall onto the outdoor unit.
- This could result in personal injury and product damage.
• Do not open the inlet grille of the product during operation. (Do not touch the electrostatic filter, if the unit is so
equipped.)
- There is risk of physical injury, electric shock, or product failure.
IMPORTANT SAFETY INSTRUCTIONS
5
Installation
• Always check for gas (refrigerant) leakage after installation or repair of product.
- Low refrigerant levels may cause failure of product.
• Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
- It may cause a problem for your neighbors.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion may result.
• Use power cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
• Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air
conditioner, not a precision refrigeration system.
- There is risk of damage or loss of property.
• Keep the unit away from children. The heat exchanger is very sharp.
- It can cause the injury, such as cutting the finger. Also the damaged fin may result in degradation of capacity.
• When installting the unit in a hospital, communication station, or similar place, provide sufficient protection
against noise.
- The inverter equipment, private power generator, high-frequency medical equipment, or radio communication equipment may cause the air conditioner to operate erroneously, or fail to operate. On the other hand, the air conditioner
may affect such equipment by creating noise that disturbs medical treatment or image broadcasting.
• Do not install the product where it is exposed to sea wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could
cause product malfunction or inefficient operation.
Operation
• Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air conditioner or damage its parts.
• Do not block the inlet or outlet.
- It may cause failure of appliance or accident.
• Make the connections securely so that the outside force of the cable may not be applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it, causing property damage, product failure, or personal injury.
• Install and insulate the drain hose to ensure that water is drained away properly based on the installation manual.
- A bad connection may cause water leakage.
• Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 20 kg.
- Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
- When transporting the outdoor unit, suspending it at the specified positions on the unit base. Also support the
outdoor unit at four points so that it cannot slip sideways.
ENGLISH
! CAUTION
6
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children may not play with them. If children play with a
plastic bag which was not torn apart, they face the risk of suffocation.
• Turn on the power at least 6 hours before starting operation.
- Starting operation immediately after turning on the main power switch can result in severe damage to internal
parts. Keep the power switch turned on during the operational season.
• Do not touch any of the refrigerant piping during and after operation.
- It can cause a burn or frostbite.
• Do not operate the air conditioner with the panels or guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not directly turn off the main power switch after stopping operation.
- Wait at least 5 minutes before turning off the main power switch. Otherwise it may result in water leakage or
other problems.
• Auto-addressing should be done in condition of connecting the power of all indoor and outdoour units. Auto-addressing
should also be done in case of changing the indoor unit PCB.
• Use a firm stool or ladder when cleaning or maintaining the air conditioner.
- Be careful and avoid personal injury.
• Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in.
- There are sharp and moving parts that could cause personal injury.
TABLE OF CONTENTS
7
ENGLISH
TABLE OF CONTENTS
2
TIPS FOR SAVING
ENERGY
3
IMPORTANT SAFETY
INSTRUCTIONS
8
INSTALLATION
PROCESS
9
OUTDOOR UNITS
INFORMATION
17 ENVIRONMENTFRIENDLY ALTERNATIVE
REFRIGERANT R410A
18 SELECT THE BEST
LOCATION
19 INSTALLATION SPACE
19
Individual Installation
21 LIFTING METHOD
22 INSTALLATION
22
23
24
27
The location of the Anchor bolts
Foundation for Installation
Preparation of Piping
Plumbing materials and storage methods
29 REFRIGERANT PIPING
INSTALLATION
29
Precautions on Pipe connection / Valve
operation
30 PIPE CONNECTIONS
BETWEEN INDOOR AND
OUTDOOR UNIT
30
31
Preparation Work
Pipe Drawing Out during Single / Series
connection
33
46
47
48
52
54
55
Refrigerant piping system
Refrigerant charging
Distribution Method
Branch pipe Fitting
Leak Test and Vacuum drying
Vacuum Mode
Thermal insulation of refrigerant piping
56 ELECTRICAL WIRING
56
58
59
60
61
67
68
71
72
73
74
75
76
77
78
79
Caution
Control box and connecting position of
wiring
Communication and Power Cables
Wiring of main power supply and
equipment capacity
Field Wiring
Checking the setting of outdoor units
Automatic Addressing
Group Number setting
Cool & Heat selector
Static pressure compensation mode
Night Low Noise Function
Overall defrost mode
Setting the ODU address
Snow removal & rapid defrost
Target pressure adjusting
Self-Diagnosis Function
90 CAUTION FOR
REFRIGERANT LEAK
90
90
Introduction
Checking procedure of limiting
concentration
92 INSTALLATION GUIDE
AT THE SEASIDE
8
INSTALLATION PROCESS
ENGLISH
INSTALLATION PROCESS
Determination of division work
Preparation of contract drawings
Sleeve and insert work
Installation of indoor unit
Indicate clearly who will be responsible for switch setting.
Make connection clearly between outdoor, indoor, remote controller and option.
Take account of gradient
of drain piping
Check model name to make
sure the fitting is made correctly
Refrigerant piping work
Special attention to dryness,
cleanness and tightness
Drain pipe work
Adjust to downward gradient
Duct work
Make sure airflow is sufficient
Heat insulation work
Electrical work
(connection circuits and drive circuits)
Airtight test
Vacuum drying
Additional charge of refrigerant
Fit facing panels
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
Outdoor unit foundation work
Installation of outdoor unit
The foundation must be level even
Avoid short circuits and ensure
sufficient space is allowed for service
Make sure no gaps are left where
the insulating materials are joined
Multiple core cable must not be used.
(suitable cable should be selected)
In the final check for 24hours at 3.8 MPa(38.7 kgf/cm2) there must be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least 5 torr, more than 1 hour
Recharge correctly as calculated in this manual. and record the amount of added refrigerant
Make sure there are no gaps left between the facing materials used on the ceiling
Refer to automatic addressing flowchart
Preheat the crank case with the electrical heater for more than 6 hours.
Run each indoor unit in turn to make sure the pipe work has been fitted correctly
Explain the use of the system as clearly as possible to your customer and make sure all relevant
documentation is in order
! CAUTION
• The above list indicates the order in which the individual work operations are normally carried out but this order may be varied where local conditions warrants such change.
• The thickness of the piping should comply with the relevant local and national regulations
for the designed pressure 3.8MPa.
• Since R410A is a mixed refrigerant, the required additional refrigerant must be charged in
its liquid state.(If the refrigerant is charged in its gaseous state, its composition changes
and the system will not work properly.)
OUTDOOR UNITS INFORMATION
9
ENGLISH
OUTDOOR UNITS INFORMATION
! CAUTION
Combination Ratio(50~200%)
Outdoor Number
Single outdoor units
Double outdoor units
Triple outdoor units
Connection Ratio
200%
160%
130%
Notes : * We can guarantee the operation only within 130% Combination.
If you want to connect more than 130% combination, please contact us and discuss the requirement like below.
• If the operation of indoor unit is more than 130%, the airflow is operated as low in the all
indoor units.
• The number of ( ) means the number of Max. connectable indoor units, when the connected capacity of indoor units is in the table above.
Power Supply : 3Ø, 380V, 60Hz or 3Ø, 380 - 415V, 50Hz
Model Name : ARUN***LTE4
Unit
System(HP)
Combination Unit
Independent Unit
kg
Refrigerant Precharged
Amount
lbs
Number of maxmum connectable indoor units
kg
Net Weight
lbs
mm
Dimensions (WxHxD)
inch
mm(inch)
Piping Conections
mm(inch)
Model
Unit
System(HP)
1 Outdoor Unit
8
10
12
ARUN080LTE4
ARUN100LTE4
ARUN120LTE4
ARUN080LTE4
ARUN100LTE4
ARUN120LTE4
7.5
7.5
7.5
16.5
16.5
16.5
13(20)
16(25)
20(30)
202 x 1
208 x 1
208 x 1
445 x 1
458 x 1
458 x 1
(920×1,680×760) × 1 (920×1,680×760) × 1 (920×1,680×760) × 1
(36-7/32 × 66-5/32 × 29-29/32) x 1 (36-7/32 × 66-5/32 × 29-29/32) x 1 (36-7/32 × 66-5/32 × 29-29/32) x 1
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1-1/8)
14
Combination Unit
ARUN140LTE4
Model
Independent Unit
ARUN140LTE4
kg
10.5
Refrigerant Precharged
Amount
lbs
23.1
Number of maxmum connectable indoor units
23(35)
kg
245 × 1
Net Weight
lbs
540 × 1
(1,240x1,680x760) x 1
mm
Dimensions (WxHxD)
(48-13/16 × 66-5/32
inch
× 29-29/32) x 1
mm(inch)
Ø 12.7(1/2)
Piping Conections
mm(inch) Ø 28.58(1-1/8)
1 Outdoor Unit
16
18
ARUN160LTE4 ARUN180LTE4
ARUN160LTE4 ARUN180LTE4
10.5
10.5
23.1
23.1
26(40)
29(45)
245 × 1
280 × 1
540 × 1
617 × 1
(1,240×1,680×760) × 1 (1,240×1,680×760) × 1
(48-13/16 × 66-5/32 (48-13/16 × 66-5/32
× 29-29/32) x 1
× 29-29/32) x 1
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 28.58(1-1/8) Ø 28.58(1-1/8)
20
ARUN200LTE4
ARUN200LTE4
10.5
23.1
32(50)
280 × 1
617 × 1
(1,240×1,680×760) × 1
(48-13/16 × 66-5/32
× 29-29/32) x 1
Ø 15.88(5/8)
Ø 28.58(1-1/8)
10 OUTDOOR UNITS INFORMATION
ENGLISH
Unit
System(HP)
2 Outdoor Unit
22
24
26
28
Combination Unit
ARUN220LTE4 ARUN240LTE4 ARUN260LTE4 ARUN280LTE4
Model
ARUN120LTE4 ARUN120LTE4 ARUN140LTE4 ARUN160LTE4
Independent Unit
ARUN100LTE4 ARUN120LTE4 ARUN120LTE4 ARUN120LTE4
7.5 x 2
7.5 x 2
10.5 + 7.5
10.5 + 7.5
kg
Refrigerant Precharged
Amount
16.5 x 2
16.5 x 2
23.1 + 16.5
23.1 + 16.5
lbs
35(44)
39(48)
42(52)
45(56)
Number of maxmum connectable indoor units
208 x 2
208 x 2
(245 × 1) + (208 × 1) (245 × 1) + (208 × 1)
kg
Net Weight
458 x 2
458 x 2
(540 × 1) + (458 × 1) (540 × 1) + (458 × 1)
lbs
x 1 (1,240×1,680×760) × 1
mm
(920×1,680×760) x 2 (920×1,680×760) x 2 (1,240x1,680x760)
+ (920x1,680x760) x 1 + (920×1,680×760) × 1
Dimensions (WxHxD)
× 66 -5/32 × 29 (48-13/16 × 66-5/32 × 29(36-7/32 × 66-5/32 × (36-7/32 × 66-5/32 × (48-13/16
inch
- 29/32) x 1 + (36-7/32 × 29/32) x 1 + (36-7/32 × 6629-29/32) x 2
29-29/32) x 2
66 - 5/32 × 29-29/32) x 1 5/32 × 29-29/32) x 1
Piping Conections
Unit
System(HP)
mm(inch)
mm(inch)
Ø 15.88(5/8)
Ø 28.58(1-1/8)
30
Combination Unit ARUN300LTE4
Model
ARUN180LTE4
Independent Unit
ARUN120LTE4
10.5 + 7.5
kg
Refrigerant Precharged
Amount
23.1 + 16.5
lbs
49(60)
Number of maxmum connectable indoor units
(280 × 1) + (208 × 1)
kg
Net Weight
(617 × 1) + (458 × 1)
lbs
(1,240×1,680×760) × 1
mm
+ (920×1,680×760) × 1
Dimensions (WxHxD)
(48-13/16 × 66-5/32 × 2929/32) x 1 + (36-7/32 × 66inch
5/32 × 29-29/32) x 1
mm(inch) Ø 19.05(3/4)
Piping Conections
mm(inch) Ø 34.9(1-3/8)
Ø 15.88(5/8)
Ø 34.9(1-3/8)
Ø 19.05(3/4)
Ø 34.9(1-3/8)
Ø 19.05(3/4)
Ø 34.9(1-3/8)
2 Outdoor Unit
32
34
36
ARUN320LTE4 ARUN340LTE4 ARUN360LTE4
ARUN200LTE4 ARUN200LTE4 ARUN200LTE4
ARUN120LTE4 ARUN140LTE4 ARUN160LTE4
10.5 + 7.5
10.5 × 2
10.5 × 2
23.1 + 16.5
23.1 × 2
23.1 × 2
52(64)
55(64)
58(64)
(280 × 1) + (208 × 1) (280 × 1) + (245 × 1) (280 × 1) + (245 × 1)
(617 × 1) + (458 × 1) (617 × 1) + (540 × 1) (617 × 1) + (540 × 1)
(1,240×1,680×760) × 1 (1,240×1,680×760) x 2 (1,240×1,680×760) x 2
+ (920×1,680×760) × 1
(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 (48-13/16 × 66-5/32 ×
29/32) x 1 + (36-7/32 × 66- × 29-29/32) x 2
29-29/32) x 2
5/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 34.9(1-3/8)
Ø 19.05(3/4)
Ø 34.9(1-3/8)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
2 Outdoor Unit
3 Outdoor Unit
38
40
42
44
Combination Unit ARUN380LTE4 ARUN400LTE4 ARUN420LTE4 ARUN440LTE4
ARUN200LTE4 ARUN200LTE4 ARUN180LTE4 ARUN200LTE4
Model
Independent Unit ARUN180LTE4 ARUN200LTE4 ARUN140LTE4 ARUN140LTE4
ARUN100LTE4 ARUN100LTE4
10.5 x 2
10.5 x 2
(10.5 × 2) + 7.5 (10.5 × 2) + 7.5
kg
Refrigerant Precharged
Amount
23.1 x 2
23.1 x 2
(23.1 × 2) + 16.5 (23.1 × 2) + 16.5
lbs
61(64)
64
64
64
Number of maxmum connectable indoor units
280 x 2
280 x 2
kg
(280 × 1) + (245 x 1) + (208 × 1) (280 × 1) + (245 x 1) + (208 × 1)
Net Weight
617 x 2
617 x 2
lbs
(617 × 1) + (540 x 1) + (458 × 1) (617 × 1) + (540 x 1) + (458 × 1)
× 2 (1,240×1,680×760) × 2
mm
(1,240×1,680×760) x 2 (1,240×1,680×760) x 2 (1,240×1,680×760)
+ (920×1,680×760) × 1 + (920×1,680×760) × 1
Dimensions (WxHxD)
(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 29(48-13/16 × 66-5/32 × 29- (48-13/16 × 66inch
29/32) x 2
5/32 × 29-29/32) x 2 29/32) x 2 + (36-7/32 × 66- 29/32) x 2 + (36-7/32 × 665/32 × 29-29/32) x 1
5/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 19.05(3/4)
mm(inch) Ø 19.05(3/4)
Piping Conections
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
mm(inch) Ø 41.3(1-5/8)
Unit
System(HP)
OUTDOOR UNITS INFORMATION
Combination Unit
Model
Independent Unit
kg
Refrigerant Precharged
Amount
lbs
Number of maxmum connectable indoor units
kg
Net Weight
lbs
mm
Dimensions (WxHxD)
inch
Piping Conections
mm(inch)
mm(inch)
46
ARUN460LTE4
ARUN200LTE4
ARUN160LTE4
ARUN100LTE4
(10.5 × 2) + 7.5
(23.1 × 2) + 16.5
64
(280 × 1) + (245 x 1) + (208 × 1)
(617× 1) + (540 x 1) + (458 × 1)
(1,240×1,680×760) × 2
+ (920×1,680×760) × 1
(48-13/16 × 66-5/32 × 2929/32) x 2 + (36-7/32 × 665/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 41.3(1-5/8)
Unit
System(HP)
54
Combination Unit ARUN540LTE4
ARUN200LTE4
Model
Independent Unit ARUN200LTE4
ARUN140LTE4
kg
10.5 × 3
Refrigerant Precharged
Amount
lbs
23.1 x 3
64
Number of maxmum connectable indoor units
kg
(280 × 2) + (245 x 1)
Net Weight
lbs
(617 × 2) + (540 × 1)
mm
Dimensions (WxHxD)
3 Outdoor Unit
48
50
ARUN480LTE4 ARUN500LTE4
ARUN200LTE4 ARUN200LTE4
ARUN180LTE4 ARUN200LTE4
ARUN100LTE4 ARUN100LTE4
(10.5 × 2) + 7.5 (10.5 × 2) + 7.5
(23.1 × 2) + 16.5 (23.1 × 2) + 16.5
64
64
(280 x 2) +(208 × 1)
(280 x 2) +(208 × 1)
(617 x 2) +(458 × 1)
(617 x 2) +(458 × 1)
(1,240×1,680×760) × 2 (1,240×1,680×760) × 2
+ (920×1,680×760) × 1 + (920×1,680×760) × 1
(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 2929/32) x 2 + (36-7/32 × 66- 29/32) x 2 + (36-7/32 × 665/32 × 29-29/32) x 1
5/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
52
ARUN520LTE4
ARUN200LTE4
ARUN200LTE4
ARUN120LTE4
(10.5 × 2) + 7.5
(23.1 × 2) + 16.5
64
(280 x 2) +(208 × 1)
(617 x 2) +(458 × 1)
(1,240×1,680×760) × 2
+ (920×1,680×760) × 1
(48-13/16 × 66-5/32 × 2929/32) x 2 + (36-7/32 × 665/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 41.3(1-5/8)
3 Outdoor Unit
56
58
ARUN560LTE4 ARUN580LTE4
ARUN200LTE4 ARUN200LTE4
ARUN200LTE4 ARUN200LTE4
ARUN160LTE4 ARUN180LTE4
10.5 x 3
10.5 × 3
23.1 x 3
23.1 x 3
64
64
280 × 3
(280 × 2) + (245 x 1)
617 × 3
(617 × 2) + (540 × 1)
60
ARUN600LTE4
ARUN200LTE4
ARUN200LTE4
ARUN200LTE4
10.5 x 3
23.1 x 3
64
280 × 3
617 × 3
(1,240x1,680x760) x 3 (1,240×1,680×760) × 3 (1,240×1,680×760) × 3 (1,240×1,680×760) × 3
(48-13/16 × 66-5/32 (48-13/16 × 66(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 29× 29-29/32) x 3
5/32 × 29-29/32) x 3 29/32) x 3
29/32) x 3
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 19.05(3/4)
mm(inch) Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
mm(inch) Ø 41.3(1-5/8)
inch
Piping Conections
Unit
System(HP)
62
Combination Unit ARUN620LTE4
ARUN180LTE4
ARUN160LTE4
Model
Independent Unit
ARUN140LTE4
ARUN140LTE4
kg
10.5 x 4
Refrigerant Precharged
Amount
lbs
23.1 x 4
64
Number of maxmum connectable indoor units
kg
(280 × 1) + (245 x 3)
Net Weight
lbs
(617 × 1) + (540 × 3)
mm
Dimensions (WxHxD)
68
ARUN680LTE4
ARUN200LTE4
ARUN200LTE4
ARUN140LTE4
ARUN140LTE4
10.5 x 4
23.1 x 4
64
(280 × 2) + (245 x 2)
(617 × 2) + (540 × 2)
(1,240x1.680x760) x 4 (1,240×1,680×760) × 4 (1,240×1,680×760) × 4 (1,240×1,680×760) × 4
(48-13/16 × 66-5/32 (48-13/16 × 66(48-13/16 × 66-5/32 ×
× 29-29/32) x 4
5/32 × 29-29/32) x 4 29-29/32) x 4
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 22.2(7/8)
mm(inch)
Ø 44.5(1-3/4)
Ø 53.98(2-1/8)
mm(inch) Ø 44.5(1-3/4)
inch
Piping Conections
4 Outdoor Unit
64
66
ARUN640LTE4 ARUN660LTE4
ARUN180LTE4 ARUN180LTE4
ARUN180LTE4 ARUN180LTE4
ARUN140LTE4 ARUN160LTE4
ARUN140LTE4 ARUN140LTE4
10.5 x 4
10.5 x 4
23.1 x 4
23.1 x 4
64
64
(280 × 2) + (245 x 2) (280 × 2) + (245 x 2)
(617 × 2) + (540 × 2) (617 × 2) + (540 × 2)
(48-13/16 × 66-5/32 ×
29-29/32) x 4
Ø 22.2(7/8)
Ø 53.98(2-1/8)
ENGLISH
Unit
System(HP)
11
12 OUTDOOR UNITS INFORMATION
ENGLISH
Unit
System(HP)
70
Combination Unit ARUN700LTE4
ARUN200LTE4
ARUN200LTE4
Model
Independent Unit
ARUN160LTE4
ARUN140LTE4
kg
10.5 x 4
Refrigerant Precharged
Amount
lbs
23.1 x 4
64
Number of maxmum connectable indoor units
kg
(280 × 2) + (245 x 2)
Net Weight
lbs
(617 × 2) + (540 × 2)
mm
(1,240×1,680×760) × 4
Dimensions (WxHxD)
(48-13/16 × 66-5/32
inch
× 29-29/32) x 4
Ø 22.2(7/8)
mm(inch)
Piping Conections
Ø 53.98(2-1/8)
mm(inch)
4 Outdoor Unit
72
74
ARUN720LTE4 ARUN740LTE4
ARUN200LTE4 ARUN200LTE4
ARUN200LTE4 ARUN200LTE4
ARUN180LTE4 ARUN180LTE4
ARUN140LTE4 ARUN160LTE4
10.5 x 4
10.5 x 4
23.1 x 4
23.1 x 4
64
64
(280 × 3) + (245 x 1) (280 × 3) + (245 x 1)
(617 × 3) + (540 × 1) (617 × 3) + (540 × 1)
(1,240×1,680×760) × 4 (1,240×1,680×760) × 4
(48-13/16 × 66-5/32 (48-13/16 × 66-5/32
× 29-29/32) x 4
× 29-29/32) x 4
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 53.98(2-1/8)
Ø 53.98(2-1/8)
76
ARUN760LTE4
ARUN200LTE4
ARUN200LTE4
ARUN180LTE4
ARUN180LTE4
10.5 x 4
23.1 x 4
64
280 × 4
617 × 4
(1,240×1,680×760) × 4
(48-13/16 × 66-5/32
× 29-29/32) x 4
Ø 22.2(7/8)
Ø 53.98(2-1/8)
4 Outdoor Unit
78
80
Combination Unit
ARUN780LTE4
ARUN800LTE4
ARUN200LTE4
ARUN200LTE4
Model
ARUN200LTE4
ARUN200LTE4
Independent Unit
ARUN200LTE4
ARUN200LTE4
ARUN180LTE4
ARUN200LTE4
10.5 x 4
10.5 x 4
kg
Refrigerant Precharged
23.1 x 4
23.1 x 4
Amount
lbs
64
64
Number of maxmum connectable indoor units
280 × 4
280 × 4
kg
Net Weight
617 x 4
617 x 4
lbs
(1,240×1,680×760) × 4
(1,240×1,680×760) × 4
mm
Dimensions (WxHxD)
(48-13/16 × 66-5/32 × 29-29/32) x 4 (48-13/16 × 66-5/32 × 29-29/32) x 4
inch
Ø 22.2(7/8)
Ø 22.2(7/8)
mm(inch)
Piping Conections
Ø 53.98(2-1/8)
Ø 53.98(2-1/8)
mm(inch)
Unit
System(HP)
OUTDOOR UNITS INFORMATION 13
ENGLISH
Model Name : ARUN***LTS4
Unit
System(HP)
Combination Unit
Independent Unit
kg
Refrigerant Precharged
Amount
lbs
Number of maxmum connectable indoor units
kg
Net Weight
lbs
mm
Dimensions (WxHxD)
inch
mm(inch)
Piping Conections
mm(inch)
Model
Unit
System(HP)
Combination Unit
Independent Unit
kg
Refrigerant Precharged
Amount
lbs
Number of maxmum connectable indoor units
kg
Net Weight
lbs
mm
Dimensions (WxHxD)
inch
Model
Piping Conections
Unit
System(HP)
mm(inch)
mm(inch)
1 Outdoor Unit
8
10
12
ARUN080LTS4
ARUN100LTS4
ARUN120LTS4
ARUN080LTS4
ARUN100LTS4
ARUN120LTS4
6.5
6.5
6.5
14.3
14.3
14.3
13(20)
16(25)
20(30)
195 × 1
201 × 1
201 × 1
430 × 1
443 × 1
443 × 1
(920×1,680×760) × 1 (920×1,680×760) × 1 (920×1,680×760) × 1
(36-7/32 × 66-5/32 × 29-29/32) x 1 (36-7/32 × 66-5/32 × 29-29/32) x 1 (36-7/32 × 66-5/32 × 29-29/32) x 1
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1-1/8)
14
ARUN140LTS4
ARUN140LTS4
8.5
18.7
23(35)
235 × 1
518 × 1
(1,240x1,680x760) x 1
(48-13/16 × 66-5/32
× 29-29/32) x 1
Ø 12.7(1/2)
Ø 28.58(1-1/8)
1 Outdoor Unit
16
18
ARUN160LTS4 ARUN180LTS4
ARUN160LTS4 ARUN180LTS4
8.5
8.5
18.7
18.7
26(40)
29(45)
235 × 1
270 × 1
518 × 1
595 × 1
(1,240×1,680×760) × 1 (1,240×1,680×760) × 1
(48-13/16 × 66-5/32 (48-13/16 × 66-5/32
× 29-29/32) x 1
× 29-29/32) x 1
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 28.58(1-1/8) Ø 28.58(1-1/8)
20
ARUN200LTS4
ARUN200LTS4
10
22
32(50)
280 × 1
617 × 1
(1,240×1,680×760) × 1
(48-13/16 × 66-5/32
× 29-29/32) x 1
Ø 15.88(5/8)
Ø 28.58(1-1/8)
2 Outdoor Unit
22
24
26
28
Combination Unit ARUN220LTS4 ARUN240LTS4 ARUN260LTS4 ARUN280LTS4
ARUN120LTS4 ARUN120LTS4 ARUN140LTS4 ARUN160LTS4
Model
Independent Unit
ARUN100LTS4 ARUN120LTS4 ARUN120LTS4 ARUN120LTS4
kg
6.5 × 2
6.5 × 2
8.5 + 6.5
8.5 + 6.5
Refrigerant Precharged
Amount
lbs
14.3 × 2
14.3 × 2
18.7 + 14.3
18.7 + 14.3
35(44)
39(48)
42(52)
45(56)
Number of maxmum connectable indoor units
kg
201 × 2
201 × 2
(235 × 1) + (201 × 1) (235 × 1) + (201 × 1)
Net Weight
lbs
443 × 2
443 × 2
(518 × 1) + (443 × 1) (518 × 1) + (443 × 1)
(1,240x1,680x760) x 1 (1,240×1,680×760) × 1
mm
(920×1,680×760) x 2 (920×1,680×760) x 2 + (920x1,680x760) x 1 + (920×1,680×760) × 1
Dimensions (WxHxD)
(48-13/16 × 66 -5/32 × 29 (48-13/16 × 66-5/32 × 29(36-7/32 × 66-5/32 × (36-7/32 × 66-5/32 × - 29/32) x 1 + (36-7/32 × 29/32) x 1 + (36-7/32 × 66inch
29-29/32) x 2
29-29/32) x 2
66 - 5/32 × 29-29/32) x 1 5/32 × 29-29/32) x 1
Ø 15.88(5/8)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 19.05(3/4)
mm(inch)
Piping Conections
Ø 34.9(1-3/8)
Ø 34.9(1-3/8)
Ø 34.9(1-3/8)
mm(inch) Ø 28.58(1-1/8)
14 OUTDOOR UNITS INFORMATION
ENGLISH
Unit
System(HP)
30
Combination Unit ARUN300LTS4
ARUN180LTS4
Model
Independent Unit
ARUN120LTS4
kg
8.5 + 6.5
Refrigerant Precharged
Amount
lbs
18.7 + 14.3
49(60)
Number of maxmum connectable indoor units
kg
(270 × 1) + (201 × 1)
Net Weight
lbs
(595× 1) + (443 × 1)
mm
Dimensions (WxHxD)
2 Outdoor Unit
32
34
ARUN320LTS4 ARUN340LTS4
ARUN200LTS4 ARUN200LTS4
ARUN120LTS4 ARUN140LTS4
10 + 6.5
10 + 8.5
22 + 14.3
22 + 18.7
52(64)
55(64)
(280 × 1) + (201 × 1) (280 × 1) + (235 × 1)
(617 × 1) + (443 × 1) (617 × 1) + (518 × 1)
36
ARUN360LTS4
ARUN200LTS4
ARUN160LTS4
10 + 8.5
22 + 18.7
58(64)
(280 × 1) + (235 × 1)
(617 × 1) + (518 × 1)
(1,240x1,680x760) x 2 (1,240×1,680×760) x 2 (1,240×1,680×760) x 2 (1,240×1,680×760) x 2
(48-13/16 × 66-5/32 (48-13/16 × 66-5/32 (48-13/16 × 66-5/32 (48-13/16 × 66-5/32 ×
× 29-29/32) x 2
× 29-29/32) x 2
× 29-29/32) x 2
29-29/32) x 2
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 19.05(3/4)
mm(inch) Ø 19.05(3/4)
Ø 34.9(1-3/8)
Ø 34.9(1-3/8)
Ø 41.3(1-5/8)
mm(inch) Ø 34.9(1-3/8)
inch
Piping Conections
2 Outdoor Unit
3 Outdoor Unit
38
40
42
44
Combination Unit ARUN380LTS4 ARUN400LTS4 ARUN420LTS4 ARUN440LTS4
ARUN200LTS4 ARUN200LTS4 ARUN180LTS4 ARUN200LTS4
Model
Independent Unit ARUN180LTS4 ARUN200LTS4 ARUN140LTS4 ARUN140LTS4
ARUN100LTS4 ARUN100LTS4
kg
10 + 8.5
10 × 2
(8.5 × 2) + 6.5 10 + 8.5 + 6.5
Refrigerant Precharged
Amount
lbs
22 + 18.7
22 × 2
(18.7 × 2) + 14.3 22 + 18.7 + 14.3
61(64)
64
64
64
Number of maxmum connectable indoor units
kg
(280 × 1) + (270 x 1)
280 × 2
(270 × 1) + (235 × 1) + (201 × 1) (280 × 1) + (235 × 1) + (201 × 1)
Net Weight
lbs
(617 × 1) + (595 × 1)
617 × 2
(595 × 1) + (518 × 1) + (443 × 1) (617 × 1) + (518 × 1) + (443 × 1)
mm
(1,240×1,680×760) x 2 (1,240×1,680×760) x 2 (1,240×1,680×760) × 2 (1,240×1,680×760) × 2
+ (920×1,680×760) × 1 + (920×1,680×760) × 1
Dimensions (WxHxD)
(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 29(48-13/16 × 66-5/32 × 29- (48-13/16 × 66inch
x 2 + (36-7/32 × 66- 29/32) x 2 + (36-7/32 × 6629/32) x 2
5/32 × 29-29/32) x 2 29/32)
5/32 × 29-29/32) x 1
5/32 × 29-29/32) x 1
Unit
System(HP)
Piping Conections
mm(inch)
mm(inch)
Unit
System(HP)
Combination Unit
Model
Independent Unit
kg
Refrigerant Precharged
Amount
lbs
Number of maxmum connectable indoor units
kg
Net Weight
lbs
mm
Dimensions (WxHxD)
inch
Piping Conections
mm(inch)
mm(inch)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
3 Outdoor Unit
46
48
50
ARUN460LTS4 ARUN480LTS4 ARUN500LTS4
ARUN200LTS4 ARUN200LTS4 ARUN200LTS4
ARUN160LTS4 ARUN180LTS4 ARUN200LTS4
ARUN100LTS4 ARUN100LTS4 ARUN100LTS4
10 + 8.5 + 6.5 10 + 8.5 + 6.5
(10 × 2) + 6.5
22 + 18.7 + 14.3 22 + 18.7 + 14.3 (22 × 2) + 14.3
64
64
64
(280 × 1) + (235 × 1) + (201 × 1) (280 × 1) + (270 × 1) + (201 × 1) (280 × 2) + (201 × 1)
(617 × 1) + (518 × 1) + (443 × 1) (617 × 1) + (595 × 1) + (443 × 1) (617 × 2) + (443 × 1)
(1,240×1,680×760) × 2 (1,240×1,680×760) × 2 (1,240×1,680×760) × 2
+ (920×1,680×760) × 1 + (920×1,680×760) × 1 + (920×1,680×760) × 1
(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 2929/32) x 2 + (36-7/32 × 66- 29/32) x 2 + (36-7/32 × 66- 29/32) x 2 + (36-7/32 × 665/32 × 29-29/32) x 1
5/32 × 29-29/32) x 1
5/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
Ø 19.05(3/4)
Ø 41.3(1-5/8)
52
ARUN520LTS4
ARUN200LTS4
ARUN200LTS4
ARUN120LTS4
(10 × 2) + 6.5
(22 × 2) + 14.3
64
(280 × 2) + (201 × 1)
(617 × 2) + (443 × 1)
(1,240×1,680×760) × 2
+ (920×1,680×760) × 1
(48-13/16 × 66-5/32 × 2929/32) x 2 + (36-7/32 × 665/32 × 29-29/32) x 1
Ø 19.05(3/4)
Ø 41.3(1-5/8)
OUTDOOR UNITS INFORMATION 15
54
Combination Unit ARUN540LTS4
ARUN200LTS4
Model
Independent Unit ARUN200LTS4
ARUN140LTS4
kg
(10 × 2) + 8.5
Refrigerant Precharged
Amount
lbs
(22 × 2) + 18.7
64
Number of maxmum connectable indoor units
kg
(280 × 2) + (235 × 1)
Net Weight
lbs
(617 × 2) + (518 × 1)
mm
Dimensions (WxHxD)
Piping Conections
(1,240x1,680x760) x 3 (1,240×1,680×760) × 3 (1,240×1,680×760) × 3 (1,240×1,680×760) × 3
62
Combination Unit ARUN620LTS4
ARUN180LTS4
ARUN160LTS4
Model
Independent Unit
ARUN140LTS4
ARUN140LTS4
kg
8.5 x 4
Refrigerant Precharged
Amount
lbs
18.7 x 4
64
Number of maxmum connectable indoor units
kg
(270 × 1) + (235 × 3)
Net Weight
lbs
(595 × 1) + (518 × 1)
mm
4 Outdoor Unit
64
66
ARUN640LTS4 ARUN660LTS4
ARUN180LTS4 ARUN180LTS4
ARUN180LTS4 ARUN180LTS4
ARUN140LTS4 ARUN160LTS4
ARUN140LTS4 ARUN140LTS4
8.5 x 4
8.5 x 4
18.7 x 4
18.7 x 4
64
64
(270 × 2) + (235 × 2) (270 × 2) + (235 × 2)
(595 × 2) + (518 × 2) (595 × 2) + (518 × 2)
Unit
System(HP)
68
ARUN680LTS4
ARUN200LTS4
ARUN200LTS4
ARUN140LTS4
ARUN140LTS4
(10 × 2) + (8.5 × 2)
(22 × 2) + (18.7 × 2)
64
(280 × 2) + (235 × 2)
(617 × 2) + (518 × 2)
(1,240x1.680x760) x 4 (1,240×1,680×760) × 4 (1,240×1,680×760) × 4 (1,240×1,680×760) × 4
(48-13/16 × 66-5/32 (48-13/16 × 66(48-13/16 × 66-5/32 ×
× 29-29/32) x 4
5/32 × 29-29/32) x 4 29-29/32) x 4
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 22.2(7/8)
mm(inch)
Ø 44.5(1-3/4)
Ø 53.98(2-1/8)
mm(inch) Ø 44.5(1-3/4)
inch
Piping Conections
60
ARUN600LTS4
ARUN200LTS4
ARUN200LTS4
ARUN200LTS4
10 x 3
22 x 3
64
280 × 3
617 × 3
(48-13/16 × 66-5/32 (48-13/16 × 66(48-13/16 × 66-5/32 × 29- (48-13/16 × 66-5/32 × 29inch
× 29-29/32) x 3
5/32 × 29-29/32) x 3 29/32) x 3
29/32) x 3
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 19.05(3/4)
mm(inch) Ø 19.05(3/4)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
Ø 41.3(1-5/8)
mm(inch) Ø 41.3(1-5/8)
Unit
System(HP)
Dimensions (WxHxD)
3 Outdoor Unit
56
58
ARUN560LTS4 ARUN580LTS4
ARUN200LTS4 ARUN200LTS4
ARUN200LTS4 ARUN200LTS4
ARUN160LTS4 ARUN180LTS4
(10 × 2) + 8.5
(10 × 2) + 8.5
(22 × 2) + 18.7 (22 × 2) + 18.7
64
64
(280 × 2) + (235 × 1) (280 × 2) + (270 × 1)
(617 × 2) + (518 × 1) (617 × 2) + (595 × 1)
70
Combination Unit ARUN700LTS4
ARUN200LTS4
ARUN200LTS4
Model
Independent Unit
ARUN160LTS4
ARUN140LTS4
kg
(10 × 2) + (8.5 × 2)
Refrigerant Precharged
Amount
lbs
(22 × 2) + (18.7 × 2)
64
Number of maxmum connectable indoor units
kg
(280 × 2) + (235 × 2)
Net Weight
lbs
(617 × 2) + (518 × 2)
mm
(1,240×1,680×760) × 4
Dimensions (WxHxD)
(48-13/16 × 66-5/32
inch
× 29-29/32) x 4
Ø 22.2(7/8)
mm(inch)
Piping Conections
Ø 53.98(2-1/8)
mm(inch)
4 Outdoor Unit
72
74
ARUN720LTS4 ARUN740LTS4
ARUN200LTS4 ARUN200LTS4
ARUN200LTS4 ARUN200LTS4
ARUN180LTS4 ARUN180LTS4
ARUN140LTS4 ARUN160LTS4
(10 × 2) + (8.5 × 2) (10 × 2) + (8.5 × 2)
(22 × 2) + (18.7 × 2) (22 × 2) + (18.7 × 2)
64
64
(280 × 2) + (270 × 1) + (235 × 1) (280 × 2) + (270 × 1) + (235 × 1)
(617 × 2) + (595 × 1) + (518 × 1) (617 × 2) + (595 × 1) + (518 × 1)
(1,240×1,680×760) × 4 (1,240×1,680×760) × 4
(48-13/16 × 66-5/32 (48-13/16 × 66-5/32
× 29-29/32) x 4
× 29-29/32) x 4
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 53.98(2-1/8)
Ø 53.98(2-1/8)
(48-13/16 × 66-5/32 ×
29-29/32) x 4
Ø 22.2(7/8)
Ø 53.98(2-1/8)
76
ARUN760LTS4
ARUN200LTS4
ARUN200LTS4
ARUN180LTS4
ARUN180LTS4
(10 × 2) + (8.5 × 2)
(22 × 2) + (18.7 × 2)
64
(280 × 2) + (270 × 2)
(617 × 2) + (595 × 2)
(1,240×1,680×760) × 4
(48-13/16 × 66-5/32
× 29-29/32) x 4
Ø 22.2(7/8)
Ø 53.98(2-1/8)
ENGLISH
Unit
System(HP)
16 OUTDOOR UNITS INFORMATION
ENGLISH
4 Outdoor Unit
78
80
ARUN780LTS4
ARUN800LTS4
Combination Unit
ARUN200LTS4
ARUN200LTS4
ARUN200LTS4
ARUN200LTS4
Model
Independent Unit
ARUN200LTS4
ARUN200LTS4
ARUN180LTS4
ARUN200LTS4
kg
(10 × 3) + (8.5 × 1)
10 x 4
Refrigerant Precharged
Amount
lbs
(22 × 3) + (18.7 × 1)
22 x 4
64
64
Number of maxmum connectable indoor units
kg
(280 × 3) + (270 × 1)
280 × 4
Net Weight
lbs
(617 × 3) + (595 × 1)
617 × 4
(1,240×1,680×760) × 4
(1,240×1,680×760) × 4
mm
Dimensions (WxHxD)
(48-13/16 × 66-5/32 × 29-29/32) x 4 (48-13/16 × 66-5/32 × 29-29/32) x 4
inch
Ø 22.2(7/8)
Ø 22.2(7/8)
mm(inch)
Piping Conections
Ø 53.98(2-1/8)
Ø 53.98(2-1/8)
mm(inch)
Unit
System(HP)
ENVIRONMENT-FRIENDLY ALTERNATIVE REFRIGERANT R410A 17
The refrigerant R410A has the property of higher operating pressure in comparison with R22.
Therefore, all materials have the characteristics of higher resisting pressure than R22 ones and
this characteristic should be also considered during the installation.
R410A is an azeotrope of R32 and R125 mixed at 50:50, so the ozone depletion potential (ODP)
of R410A is 0. These days the developed countries have approved it as the environment-friendly
refrigerant and encouraged to use it widely to prevent environment pollution.
! CAUTION
• The wall thickness of the piping should comply with the relevant local and national regulations for the designed pressure 3.8MPa
• Since R410A is a mixed refrigerant, the required additional refrigerant must be charged in
its liquid state.
If the refrigerant is charged in its gaseous state, its composition changes and the system
will not work properly.
• Do not place the refrigerant container under the direct rays of the sun to prevent it from
exploding.
• For high-pressure refrigerant, any unapproved pipe must not be used.
• Do not heat pipes more than necessary to prevent them from softening.
• Be careful not to install wrongly to minimize economic loss because it is expensive in
comparison with R22.
ENGLISH
ENVIRONMENT-FRIENDLY ALTERNATIVE REFRIGERANT R410A
18 SELECT THE BEST LOCATION
ENGLISH
SELECT THE BEST LOCATION
Select space for installing outdoor unit, which will meet the following conditions:
• No direct thermal radiation from other heat sources
• No possibility of annoying neighbors by noise from unit
• No exposition to strong wind
• With strength which bears weight of unit
• Note that drain flows out of unit when heating
• With space for air passage and service work shown next
• Because of the possibility of fire, do not install unit to the space where generation, inflow, stagnation, and leakage of combustible gas is expected.
• Avoid unit installation in a place where acidic solution and spray (sulfur) are often used.
• Do not use unit under any special environment where oil, steam and sulfuric gas exist.
• It is recommended to fence round the outdoor unit in order to prevent any person or animal
from accessing the outdoor unit.
• If installation site is area of heavy snowfall, then the following directions should be observed.
- Make the foundation as high as possible.
- Fit a snow protection hood.
• Select installation location considering following conditions to avoid bad condition when additionally performing defrost operation.
- Install the outdoor unit at a place well ventilated and having a lot of sunshine in case of installing the product at a place With a high humidity in winter (near beach, coast, lake, etc.)
(Ex : Rooftop where there is always sunshine.)
INSTALLATION SPACE 19
ENGLISH
INSTALLATION SPACE
Individual Installation
During the installation of the unit, consider service, inlet, and outlet and acquire the minimum
space as shown in the figures below.
Category
Installation Space
B
B
B
B
A B
A
B
A B
A
A
A
D
A D
D
D
BD
D
D
B
B
A BB
B
A B
B
A
AA B
AD
A
A
D
A DD
D
BD
D
D
D
B
A BB
B
B
A
AA B
B
DB
A
A
A
A
F
AD
BF
F
F
A BF
F
F
4 sides
are walls
A
FD
D
C
C
C
C
C
C
C
C
E
E
C E
E
EE
E
C
C
C
C
C
C
C
E
E
E
E
EE
E
E
E
E E
E
E
E
C
E
C
E
E
EE
E
Case 1
Case 2
(10mm≤Side Space≤49mm) (Side Space≥49mm)
A≥10
B≥300
C≥10
D≥500
A≥50
B≥100
C≥50
D≥500
A≥10
B≥300
C≥10
D≥500
E≥20
A≥50
B≥100
C≥50
D≥500
E≥100
A≥10
B≥300
C≥10
D≥500
E≥20
F≥600
A≥50
B≥100
C≥50
D≥500
E≥100
F≥500
A≥10
B≥300
C≥10
D≥300
E≥20
F≥500
A≥10
B≥300
C≥10
D≥300
E≥20
F≥500
A≥10
B≥500
C≥10
D≥500
E≥20
F≥900
A≥50
B≥500
C≥50
D≥500
E≥100
F≥600
C
C
C
C
C
C
C
C
D
C
D
FD
D
D
B
B
B
DB
B
A
A B
DB
A
AB
A
A F
A
F
A BF
F
FF
A F
F
D
D
D
D
D
D
DB
B
B
B
B
AD
A
BB
B
A
A
AA
A BF
A
F
F
A F
FF
F
F
E
E
E
E
EE
E
C
C
C
C
C
C
C
E
C
E
C
FD
E
E
E
E
E E
E
C
E
C
E
C
C
C
C
C
C
C
F
D
D
D
D
D
B
D
DD
DB
BB
B
B
A
A B
A
A
AA BB
A≥10
B≥300
A
AA
Only 2
sides are
walls
BB
B
B
B
B
AA
A BB
B
A
A
AA
A
A
E E
E
E
E E
E
E
E
E
E
E
E
E
E
EE
E
A≥200
B≥300
E≥400
h2
B
500
A
1500
h1
Limitations on
the
height of
the wall
(Refer to
4 side
walls)
45° or
more
240 or
more
50 or more
• The height of the wall on the front side must be 1500mm or less.
• The height of the wall on the inlet side must be 500mm or less.
• There is no limit to the wall on the side.
• If the height of the walls on the front and the side are higher than the limit,
there must be additional space on the front and the side.
- Additional Space on the front side by 1/2 of h1.
- Additional Space on the inlet side by 1/2 of h2
- h1 = A(Actual height) - 1500
- h2 = B(Actual height) - 500
20 INSTALLATION SPACE
ENGLISH
Seasonal wind and cautions in winter
• Sufficient measures are required in a snow area or severe cold area in winter so that product
can be operated well.
• Get ready for seasonal wind or snow in winter even in other areas.
• Install a suction and discharge duct not to let in snow or rain.
• Install the outdoor unit not to come in contact with snow directly. If snow piles up and freezes
on the air suction hole, the system may malfunction. If it is installed at snowy area, attach the
hood to the system.
• Install the outdoor unit at the higher installation console by 50cm than the average snowfall (annual average snowfall) if it is installed at the area with much snowfall.
• Where snow accumulated on the upper part of the Outdoor Unit by more than 10cm, always
remove snow for operation.
- The height of H frame must be more than 2 times the snowfall and its width shall not exceed the width of the product. (If width of the frame is wider than that of the product,
snow may accumulate)
- Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal
wind.
LIFTING METHOD 21
• When carrying the suspended, unit pass the ropes under the unit and use the two suspension
points each at the front and rear.
• Always lift the unit with ropes attached at four points so that impact is not applied to the unit.
• Attach the ropes to the unit at an angle of 40° or less.
Locking points for
transportation ropes
Forklift Carrying Hole
Forklift Carrying Guide
! CAUTION
Be very careful while carrying the product.
• Do not have only one person carry product if it is more than 20 kg.
• PP bands are used to pack some products. Do not use them as a mean for transportation
because they are dangerous.
• Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in
your hands.
• Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise
plastic packaging bag may suffocate children to death.
• When carrying in Outdoor Unit, be sure to support it at four points. Carrying in and lifting
with 3-point
support may make Outdoor Unit unstable, resulting in a fall.
• Use 2 belts of at least 8 m long.
• Place extra cloth or boards in the locations where the casing comes in contact with the
sling to prevent damage.
• Hoist the unit making sure it is being lifted at its center of gravity.
ENGLISH
LIFTING METHOD
22 INSTALLATION
• Install at places where it can endure the weight and vibration/noise of the outdoor unit.
• The outdoor unit supports at the bottom shall have width of at least 100mm under the Unit’s
legs before being fixed.
• The outdoor unit supports should have minimum height of 200mm.
• Anchor bolts must be inserted at least 75mm.
m
00m
ast 1
At le
For outdoor units should not
be supported only by the
corner supports.
m
m
00m
00m
ast 1 least 1
Center of the Unit
At le
At
m
00m
ast 1
At le
m
00m mm
ast 1 ast 100
e
l
t
A At le
Center of the Unit
The location of the Anchor bolts
760
730
At least 65
65
At least 65
Unit : mm
65
ENGLISH
INSTALLATION
Chassis
Outdoor Unit Capacity
A(mm)
B(mm)
UX2
UX3
8~12 HP
14~20 HP
920
1240
792
1102
INSTALLATION 23
• Fix the unit tightly with bolts as shown below so that unit will not fall down due to earthquake
or gust.
• Use the H-beam support as a base support
• Noise and vibration may occur from the floor or wall since vibration is transferred through the
installation part depending on installation status. Thus, use anti-vibration materials (cushion pad)
fully (The base pad shall be more than 200mm).
At least 200mm
200
200
100
75
75
Unit : mm
Ⓐ The corner part must be fixed firmly. Otherwise,
the support for the installation may be bent.
Ⓑ Get and use M10 Anchor bolt.
Ⓒ Put Cushion Pad between the outdoor unit and
ground support for the vibration protection in wide
area.
Ⓓ Space for pipes and wiring (Pipes and wirings for
bottom side)
Ⓔ H-beam support
Ⓕ Concrete support
! WARNING
• Install where it can sufficiently support the weight of the outdoor unit.
If the support strength is not enough, the outdoor unit may drop and hurt people.
• Install where the outdoor unit may not fall in strong wind or earthquake.
If there is a fault in the supporting conditions, the outdoor unit may fall and hurt people.
• Please take extra cautions on the supporting strength of the ground, water outlet treatment(treatment of the water flowing out of the outdoor unit in operation), and the passages of the pipe and wiring, when making the ground support.
• Do not use tube or pipe for water outlet in the Base pan. Use drainage instead for water
outlet. The tube or pipe may freeze and the water may not be drained.
! CAUTION
• Be sure to remove the Pallet(Wood Support) of the
bottom side of the outdoor unit Base Pan before fixing the bolt. It may cause the unstable state of the
outdoor settlement, and may cause freezing of the
heat exchanger resulting in abnormal operations.
• Be sure to remove the Pallet(Wood Support) of the
bottom side of the outdoor unit before welding.
Not removing Pallet(Wood Support) causes hazard
of fire during welding.
Pallet(Wood Support)
- Remove before Installation
ENGLISH
Foundation for Installation
24 INSTALLATION
ENGLISH
Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following
procedure.
Cut the pipes and the cable
- Use the accessory piping kit or the pipes purchased locally.
- Measure the distance between the indoor
and the outdoor unit.
- Cut the pipes a little longer than measured
distance.
- Cut the cable 1.5m longer than the pipe
length.
Copper
tube
Pipe
Reamer
Burrs removal
- Completely remove all burrs from the cut
cross section of pipe/tube.
- Put the end of the copper tube/pipe to downward direction as you remove burrs in order
to avoid to let burrs drop in the tubing.
Flaring work
- Carry out flaring work using flaring tool as
shown below.
Indoor unit
[kW(Btu/h]
<5.6(19,100)
<16.0(54,600)
<22.4(76,400)
Gas
1/2"
5/8"
3/4"
Pipe
"A"
Liquid Gas Liquid
1/4" 0.5~0.8 0~0.5
3/8" 0.8~1.0 0.5~0.8
3/8" 1.0~1.3 0.5~0.8
Slanted Uneven Rough
90
Point down
Handle
Bar
Bar
"A"
Yoke
Cone
Copper pipe
Clamp handle
Red arrow mark
Firmly hold copper tube in a bar(or die) as indicated dimension in the table above.
Check
- Compare the flared work with figure below.
- If flare is noted to be defective, cut off the
flared section and do flaring work again.
Smooth all round
Inside is shining without scratches.
= Improper flaring =
Even length
all round
Inclined Surface Cracked Uneven
damaged
thickness
INSTALLATION 25
ENGLISH
Flare shape and flare nut tightening torque
Precautions when connecting pipes
- See the following table for flare part machining dimensions.
- When connecting the flare nuts, apply refrigerant oil to the inside and outside of the flares and
turn them three or four times at first. (Use ester oil or ether oil.)
- See the following table for tightening torque.(Applying too much torque may cause the flares to crack.)
- After all the piping has been connected, use nitrogen to perform a gas leak check.
pipe size
tightening torque(N·m)
A(mm)
Ø9.52
38±4
12.8-13.2
Ø12.7
55±6
16.2-16.6
Ø15.88
75±7
19.3-19.7
flare shape
90 2
A
45
2
R=0.4~0.8
! CAUTION
• Always use a charge hose for service port connection.
• After tightening the cap, check that no refrigerant leaks are present.
• When loosening a flare nut, always use two wrenches in
combination, When connecting the piping, always use a spanner and
torque wrench in combination to tighten the flare nut.
• When connecting a flare nut, coat the flare(inner and outer faces)
with oil for R410A(PVE) and hand tighten the nut 3 to 4 turns as the
initial tightening.
Union
Opening shutoff valve
1 Remove the cap and turn the valve counter clockwise with the hexagon wrench.
2 Turn it until the shaft stops.
Do not apply excessive force to the shutoff valve. Doing so may break the valve body, as the
valve is not a backseat type. Always use the special tool.
3 Make sure to tighten the cap securely.
26 INSTALLATION
ENGLISH
Closing shutoff valve
1 Remove the cap and turn the valve clockwise with the hexagon wrench.
2 Securely tighten the valve until the shaft contacts the main body seal.
3 Make sure to tighten the cap securely.
* For the tightening torque, refer to the table on the below.
Tightening torque
Shutoff
valve size
Ø6.35
Ø9.52
Ø12.7
Tightening torque N·m(Turn clockwise to close)
Cap(Valve lid) Service port Flare nut Gas line piping attached to unit
16±2
29.4±2.9
Hexagonal
38±4
wrench 4mm
55±6
12.7±2
Hexagonal
75±7
wrench 6mm
53.9±5.8
Hexagonal
25±3
wrench 10mm
Shaft(valve body)
6±0.6
9±0.9
Ø15.88
15±1.5
Ø22.2
Ø25.4
30±3
Insulation of shutoff valve
1
Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C).
2
Precautions in high humidity circumstance:
This air conditioner has been tested according to the "ISO Conditions with Mist" and confirmed that there is not any default. However, if it is operated for a long time in high humid atmosphere (dew point temperature: more than 23°C), water drops are liable to fall. In this
case, add heat insulation material according to the following procedure:
- Heat insulation material to be prepared... EPDM (Ethylene Propylene Diene Methylene)-over
120°C the heat-resistance temperature.
- Add the insulation over 10mm thickness at high humidity environment.
Fastening band
(accessory)
Refrigerant piping
Indoor unit
Thermal insulator
(accessory)
INSTALLATION 27
Pipe must be able to obtain the specified thickness and should be used with low impurities.
Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Items
Drying
Cleanliness
Airtight
Should be no moisture inside
No dust inside.
There is no refrigerant leakage
Moisture
Dust
Leakage
- Significant hydrolysis of refrigerant oil
- Degradation of refrigerant
oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Degradation of refrigerant
oil
- Poor insulation of the compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- Gas shortages
- Degradation of refrigerant
oil
- Poor insulation of the compressor
- Do not cold and warm
- No moisture in the pipe
- Until the connection is
completed, the plumbing
pipe entrance should be
strictly controlled.
- Stop plumbing at rainy day.
Counter- - Pipe entrance should be
measure taken side or bottom.
- When removal burr after
cutting pipe, pipe entrance
should be taken down.
- Pipe entrance should be
fitted cap when pass
through the walls.
- No dust in the pipe.
- Until the connection is
completed, the plumbing
pipe entrance should be
strictly controlled.
- Pipe entrance should be
taken side or bottom.
- When removal burr after
cutting pipe, pipe entrance
should be taken down.
- Pipe entrance should be
fitted cap when pass
through the walls.
- Airtightness test should
be.
- Brazing operations to comply with standards.
- Flare to comply with standards.
- Flange connections to
comply with standards.
Cause
failure
ENGLISH
Plumbing materials and storage methods
28 INSTALLATION
Welding, as when heating without nitrogen substitution a large amount of the oxide film is
formed on the internal piping.
The oxide film is a caused by clogging EEV, Capillary, oil hole of accumulator and suction hole of
oil pump in compressor.
It prevents normal operation of the compressor.
In order to avoid this problem, Welding should be done after replacing air by nitrogen gas.
When welding plumbing pipe, the work is required.
Regulator
Welding Point
Nitrogen gas
Pressure 0.02MPa less
Oxide scale
Note) should not block the outlet side.
When the internal pressure in pipe is abo
ve the atmospheric pressure, pinhole is o
ccurred and it is a leakage cause.
Taping
(Should not
contain air)
Auxiliary valve
Nitrogen
ENGLISH
Nitrogen substitution method
! CAUTION
1 Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron gas):
Please use the following nitrogen pressure 0.02MPa
Oxygen – Promotes oxidative degradation of refrigerant oil.
Because it is flammable, it is strictly prohibited to use
Carbon dioxide – Degrade the drying characteristics of gas
Chevron Gas – Toxic gas occurs when exposed to direct flame.
2 Always use a pressure reducing valve.
3. Please do not use commercially available antioxidant.
The residual material seems to be the oxide scale is observed.
In fact, due to the organic acids generated by oxidation of the alcohol contained in the antioxidants, ants nest corrosion occurs. (causes of organic acid  alcohol + copper + water +
temperature)
REFRIGERANT PIPING INSTALLATION 29
Precautions on Pipe connection / Valve operation
Pipe connection is done by connecting from the end of the pipe to the branching pipes, and the
refrigerant pipe coming out of the outdoor unit is divided at the end to connect to each indoor
unit. Flare connection for the indoor unit, and welding connection for the outdoor pipe and the
branching parts.
- Use hexagonal wrench to open/close the valve.
Service Port
Liquid pipe
Gas pipe
Refrigerant
Charging Port
! WARNING
• Always careful not to leak the refrigerant during welding.
• The refrigerant generates poisonous gas harmful to human body if combusted.
• Do not perform welding in a closed space.
• Be sure to close the cap of the service port to prevent gas leakage after the work.
! CAUTION
Please block the pipe knock outs of the front and side panels after installing the pipes.
(Animals or foreign objects may be brought in to damage wires.)
ENGLISH
REFRIGERANT PIPING INSTALLATION
30 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
PIPE CONNECTIONS BETWEEN INDOOR AND
OUTDOOR UNIT
- Pipe connections can be done on the front side or on the side according to the installation
- Be sure to let 0.2kgf/cm2 Nitrogen flow in the pipe when welding.
- If Nitrogen was not flown during welding, many oxidized membranes may form inside the pipe
and disturb the normal operations of valves and condensers.
Right Side Pipe
Draw Out
Regulator
Refrigerant Pipe
Nitrogen
Direction
Taping
Valve
Nitrogen
Left Side Pipe
Draw Out
Front Pipe Draw Out
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs.
Removal Area for Liquid/Gas pipe
bottom side connections.
! CAUTION
• Do not give damage to the pipe/base during the Knock Out work.
• Proceed to pipe work after removing burr after Knock Out work.
• Perform sleeve work to prevent damage to the wire when connecting wires using knock
Outs.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 31
Service Port
Liquid pipe
Gas pipe
Leakage Prevention Cap
Refrigerant Charging Port
Pipe Drawing Out during Single / Series connection
Method of drawing out pipes on the front side
- Proceed with the pipe work as shown in the below figure for front side pipe drawing out.
Pipe Knock Out for
Liquid/Gas pipes
ENGLISH
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit service valve before pipe
work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether the liquid/gas pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
32 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
Gas pipe
Remove only liquid/gas pipe Knock out
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 33
ENGLISH
Refrigerant piping system
Y branch method
1 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
H 110m
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
h 40m
Slave
Master SlaveMaster
Slave
Master
10m or
less
h1
ODU Capacity
Master ≥ Slave
L150m (200 m : Conditional application)
H 110m
2 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN21
l 40m (90 m : Conditional application)
h 40m
Piping length from outdoor branch to outdoor unit ≤10m, equivalent length:max 13m
(for 22HP or more)
Conditional Application
To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
• Diameter of pipes between first branch and the last branch should be increased by one
step, except pipe diameter B,C,D is same as Diameter A
Ø6.35 ’ Ø 9.52 ’ Ø 12.7 ’ Ø 15.88 ’ Ø 19.05 ’ Ø 22.2 ’ Ø 25.4*, Ø 28.58 ’ Ø 31.8*,
Ø 34.9 ’ Ø 38.1*
* : It is not necessary to size up.
• While calculating whole refrigerant pipe length, pipe B,C,D length should be calculated
twice.
A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1,000 m
• Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40 m
• [Length of pipe from outdoor unit to the farthest indoor unit 5 (A+B+C+D+e)]
- [Length of pipe outdoor unit to the closest indoor unit 1 (A+a)] ≤ 40 m
34 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Slave2
Slave1
Master
10m or
less
h1
ODU Capacity
Master ≥ Slave1 ≥ Slave 2
H 110m
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
h 40m
4 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN41
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓖ : Connection branch pipe between Outdoor
units : ARCNN21
Slave3
Slave2
Slave1
Master
h1
10m or
less
G
ODU Capacity
Master ≥ Slave1 ≥ Slave 2 ≥ Slave 3
H 110m
ENGLISH
3 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN21
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
h 40m
Piping length form outdoor branch to outdoor unit ≤ 10 m, equivalent length : max. 13
m(for 22 HP or more)
Conditional Application
To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
• Diameter of pipes between first branch and the last branch should be increased by one
step, except pipe diameter B,C,D is same as Diameter A
Ø6.35 ’ Ø 9.52 ’ Ø 12.7 ’ Ø 15.88 ’ Ø 19.05 ’ Ø 22.2 ’ Ø 25.4*, Ø 28.58 ’ Ø 31.8*,
Ø 34.9 ’ Ø 38.1*
* : It is not necessary to size up.
• While calculating whole refrigerant pipe length, pipe B,C,D length should be calculated
twice.
A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1,000 m
• Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40 m
• [Length of pipe from outdoor unit to the farthest indoor unit 5 (A+B+C+D+e)]
- [Length of pipe outdoor unit to the closest indoor unit 1 (A+a)] ≤ 40 m
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 35
Downward Indoor Unit
total capacity [kW(Btu/h)]
Liquid pipe [mm(inch)]
Gas pipe [mm(inch)]
≤ 5.6(19,100)
< 16.0(54,600)
≤ 22.4(76,400)
< 33.6(114,700)
< 50.4(172,000)
< 67.2(229,400)
< 72.8(248.500)
< 100.8(344,000)
< 173.6(592,500)
< 184.8(630,700)
< 224.0(764,400)
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Ø12.7(1/2)
Ø15.88(5/8)
Ø15.88(5/8)
Ø19.05(3/4)
Ø19.05(3/4)
Ø22.2(7/8)
Ø22.2(7/8)
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
Ø28.58(1-1/8 )
Ø28.58(1-1/8 )
Ø34.9(1-3/8)
Ø34.9(1-3/8)
Ø41.3(1-5/8)
Ø44.5(1-3/4)
Ø53.98(2-1/8)
Total pipe length = A+B+C+D+a+b+c+d+e ≤ 1,000 m
L
l
H
h
h1
Longest pipe length
Equivalent pipe length
A+B+C+D+e ≤ 150m(200m**)
*A+B+C+D+e ≤ 175m(225m**)
Longest pipe length after 1st branch
B+C+D+e ≤ 40m(90m**)
Difference in height (Outdoor Unit ÷ Indoor Unit)
H ≤ 110m
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤ 40m
Difference in height (Outdoor Unit ÷ Outdoor Unit)
h1 ≤ 5m
• * : Assume equivalent piping length of Y branch to be 0.5m, that of header to be 1m,
calculation purpose.
• ** : To apply Conditional Application
! WARNING
When the any one (or both ) of below conditions are satisfied, the diameter of main pipe (A)
must be increased according to below table.
- The equivalent length between outdoor unit and the farthest indoor unit is 90m or more
(Liquid and Gas pipes are increased)
- The level difference (Outdoor unit ÷ Indoor unit) is 50m or more (Only liquid pipe is increased)
ENGLISH
Refrigerant pipe diameter from branch to branch (B,C,D)
36 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Upward Outdoor unit
total capacity
HP
8
10
12 ~ 14
16
18 ~ 22
24
26 ~ 34
36 ~ 48
Increased Pipe Diameter
Standard Pipe Diameter
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
When pipe length is 90m or When level difference is 50m
more from ODU to 1st branch
or more
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Ø 9.52(3/8) Ø 19.05(3/4) Ø 12.7(1/2)
Ø 22.2(7/8)
Ø 9.52(3/8)
Ø 22.2(7/8)
Ø 12.7(1/2)
Ø 25.4(1)
Ø 12.7(1/2) Ø 28.58(1-1/8) Ø 15.88(5/8) not increased
Ø 12.7(1/2) Ø 28.58(1-1/8) Ø 15.88(5/8) Ø 31.8(1-1/4)
Ø 15.88(5/8) Ø 28.58(1-1/8) Ø 19.05(3/4) Ø 31.8(1-1/4)
Ø 15.88(5/8) Ø 34.9(1-3/8) Ø 19.05(3/4) not increased
Ø 19.05(3/4) Ø 34.9(1-3/8) Ø 22.2(7/8) Ø 38.1(1-1/2)
Ø 19.05(3/4) Ø 41.3(1-5/8) Ø 22.2(7/8) not increased
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Ø 12.7(1/2)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 22.2(7/8)
not increased
not increased
not increased
not increased
not increased
not increased
not increased
not increased
* If the step up size is not available, you can not select the next higher size available.
Header Method
1 Outdoor Unit
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Indoor Units
Ⓓ : Sealed piping
H 110m
L 200m
40m
40m
2 Outdoor Units
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN21
Slave
Master
Slave
Slave
Master
Master
10m or
less
h1
ODU Capacity
Master ≥ Slave
L 200m
L 110m
ENGLISH
Refrigerant pipe diameter from outdoor unit to first branch. (A)
40m
40m
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 37
ENGLISH
Slave2
Slave1
Master
ODU Capacity
Master ≥ Slave1 ≥ Slave2
h1
10m or
less
L 200m
H 110m
3 Outdoor Units
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN21
40m
40m
Branch pipe can not be used after header
Slave3
Slave2
Slave1
Master
h1
10m or
less
ODU Capacity
Master ≥ Slave1 ≥ Slave2 ≥ Slave3
G
F
E
L 200m
H 110m
4 Outdoor Units
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN41
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓖ : Connection branch pipe between Outdoor
units : ARCNN21
40m
40m
Branch pipe can not be used after header
Total pipe length = A+a+b+c+d+e+f ≤ 1,000m
L
l
H
h
h1
Longest pipe length
*Equivalent pipe length
A+f ≤ 200m
A+f ≤ 225m
Longest pipe length after 1st branch
f ≤ 40m
Difference in height (Outdoor Unit ÷ Indoor Unit)
H ≤ 110m
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤ 40m
Difference in height (Outdoor Unit ÷ Outdoor Unit)
h1 ≤ 5m
38 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Pipe length after header branching (a~f)
It is recommended that difference in length of the pipes connected to the Indoor Units is
minimized. Performance difference between Indoor Units may occur.
• * : Assume equivalent piping length of Y branch to be 0.5m, that of header to be 1m, calculation purpose
• Indoor Unit should be installed at lower position than the header.
• Piping length from outdoor branch to outdoor unit ≤ 10m, equivalent length : max 13m
(for 22HP or more)
L 150m(200m : Conditional application)
40m(90m : Conditional application)
40m
1 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
L 110m
Combination of Y branch/header method
Branch pipe can not be used after header
Slave
Slave
Master
10m or
less
h1
Slave
Master
Master
ODU Capacity
Master ≥ Slave
L 150m(200m : Conditional application)
40m(90m : Conditional application)
40m
2 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN21
Ⓕ : Header
Ⓖ : Sealed piping
H 110m
ENGLISH
! WARNING
Branch pipe can not be used after header
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 39
ENGLISH
Slave2
Slave1
Master
10m or
less
ODU Capacity
Master ≥ Slave1 ≥ Slave2
h1
F
E
H 110m
L 150m(200m : Conditional application)
40m(90m : Conditional application)
40m
3 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN21
Ⓖ : Header
Ⓗ : Sealing
Branch pipe can not be used after header
Slave3
Slave2
Slave1
Master
h1
F
10m or
less
ODU Capacity
Master ≥ Slave1 ≥ Slave2 ≥ Slave3
E
L 150m(200m : Conditional application)
40m(90m : Conditional application)
40m
G
H 110m
4 Outdoor Units
Example : 5 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe between Outdoor
units: ARCNN41
Ⓕ : Connection branch pipe between Outdoor
units: ARCNN31
Ⓖ : Connection branch pipe between Outdoor
units: ARCNN21
Ⓗ : Header
Ⓘ : Sealing
Branch pipe can not be used after header
Refrigerant pipe diameter from branch to branch (B,C)
Downward Indoor Unit
total capacity [kW(Btu/h)]
Liquid pipe [mm(inch)]
Gas pipe [mm(inch)]
≤ 5.6(19,100)
< 16.0(54,600)
≤ 22.4(76,400)
< 33.6(114,700)
< 50.4(172,000)
< 67.2(229,400)
< 72.8(248.500)
< 100.8(344,000)
< 173.6(592,500)
< 184.8(630,700)
< 224.0(764,400)
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Ø9.52(3/8)
Ø12.7(1/2)
Ø15.88(5/8)
Ø15.88(5/8)
Ø19.05(3/4)
Ø19.05(3/4)
Ø22.2(7/8)
Ø22.2(7/8)
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
Ø28.58(1-1/8 )
Ø28.58(1-1/8 )
Ø34.9(1-3/8)
Ø34.9(1-3/8)
Ø41.3(1-5/8)
Ø44.5(1-3/4)
Ø53.98(2-1/8)
40 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Total pipe length = A+B+C+a+b+c+d+e ≤ 1,000m
L
l
H
h
h1
Longest pipe length
*Equivalent pipe length
A+B+b ≤ 150m(200m**)
A+B+b ≤ 175m(225m**)
Longest pipe length after 1st branch
B+b ≤ 40m(90m**)
Difference in height (Outdoor Unit ÷ Indoor Unit)
H ≤ 110m
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤ 40m
Difference in height (Outdoor Unit ÷ Outdoor Unit)
h1 ≤ 5m
• * : Assume equivalent pipe length of Y branch to be 0.5m, that of header to be 1m, calculation purpose
• ** : To apply Conditional Application
• Indoor Unit should be installed at lower position than the header.
! WARNING
• It is recommended that difference of piping length for pipes connected to the Indoor Unit
is minimized. Performance difference between Indoor Units may occur.
• When the any one (or both ) of below conditions are satisfied, the diameter of main pipe
(A) must be increased according to below table.
- The equivalent length between outdoor unit and the farthest indoor unit is 90m or more
(Liquid and Gas pipes are increased)
- The level difference (Outdoor unit ÷ Indoor unit) is 50m or more (Only liquid pipe is increased)
Refrigerant pipe diameter from outdoor unit to first branch. (A)
Upward Outdoor unit
total capacity
HP
8
10
12 ~ 14
16
18 ~ 22
24
26 ~ 34
36 ~ 48
Increased Pipe Diameter
Standard Pipe Diameter
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
When pipe length is 90m or When level difference is 50m
more from ODU to 1st branch
or more
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Ø 9.52(3/8) Ø 19.05(3/4) Ø 12.7(1/2)
Ø 22.2(7/8)
Ø 9.52(3/8)
Ø 22.2(7/8)
Ø 12.7(1/2)
Ø 25.4(1)
Ø 12.7(1/2) Ø 28.58(1-1/8) Ø 15.88(5/8) not increased
Ø 12.7(1/2) Ø 28.58(1-1/8) Ø 15.88(5/8) Ø 31.8(1-1/4)
Ø 15.88(5/8) Ø 28.58(1-1/8) Ø 19.05(3/4) Ø 31.8(1-1/4)
Ø 15.88(5/8) Ø 34.9(1-3/8) Ø 19.05(3/4) not increased
Ø 19.05(3/4) Ø 34.9(1-3/8) Ø 22.2(7/8) Ø 38.1(1-1/2)
Ø 19.05(3/4) Ø 41.3(1-5/8) Ø 22.2(7/8) not increased
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
Ø 12.7(1/2)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 22.2(7/8)
not increased
not increased
not increased
not increased
not increased
not increased
not increased
not increased
* If the step up size is not available, you can not select the next higher size available.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 41
ENGLISH
Outdoor unit Connection
! WARNING
• In case of pipe diameter B connected after first branch is bigger than the main pipe diameter A, B should be of the same size with A.
Ex) In case indoor unit combination ratio 120% is connected to 24HP(67.2 kW) outdoor unit.
1) Outdoor unit main pipe diameter A : Ø34.9(Gas pipe), Ø15.88(liquid pipe)
2) Pipe diameter B after first branch according to 120% indoor unit ombination(80.6kW) :
Ø34.9(gas pipe), Ø19.05(liquid pipe)
Therefore, pipe diameter B connected after first branch would be Ø34.9(gas pipe) /
Ø15.88(liquid pipe) which is same with main pipe diameter.
[Example]
Do not choose the main pipe diameter by downward indoor unit total capacity but its outdoor
unit model name.
Do not let the connection pipe from branch to branch exceed the main pipe diameter chosen
by outdoor unit model name.
EX) Where connecting the indoor units to the 22 HP (61.6 kW) outdoor unit to 130% of its
system capacity (80.1 kW) and branching 7k (2.2kW) indoor unit at the 1st branch.
1) Main pipe diameter(22 HP outdoor unit): Ø28.58(gas pipe), Ø15.88(Liquid pipe)
2) Pipe diameter between 1st and 2nd branch (77.9kW indoor units) :
Ø34.9(Gas pipe), Ø19.05(Liquid pipe) in conformity with downward indoor units.
Since the main pipe diameter of 22HP outdoor unit is Ø28.58(gas pipe), Ø15.88(Liquid
pipe) is used as the main pipe and the connection pipe between 1st and 2nd branch.
Indoor Unit Connection
Indoor Unit connecting pipe from branch (a,b,c,d,e,f)
Indoor Unit capacity
[kW(Btu/h)]
≤ 5.6(19,100)
< 16.0(54,600)
< 22.4(76,400)
Liquid pipe [mm(inch)]
Ø6.35(1/4)
Ø9.52(3/8)
Ø9.52(3/8)
Gas pipe [mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
! CAUTION
• Bending radius should be at least twice the
diameter of the pipe.
• Bend pipe after 500mm or more from
branch(or header).
Do not bend U type.
It may cause Performance unsatisfactory or
noise.
500mm or more
500mm or more
42 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Pipe Connection Method/Precautions for
Series connections between Outdoor units
- Separate Y branch joints are needed for series connections between outdoor units.
- Please refer to the below connection examples to install pipe connections between outdoor
units.
Pipe connection between outdoor units (General Case)
The maximum pipe
length after the first
branching between the
outdoor units is 10m or
less
Pipes between outdoor units are 2m or less
2m or less
Pipes between outdoor units are 2m or longer
Oil Trap
0.2m or more
2m or less
2m or longer
Oil Trap
2m or less
2m or longer
Oil Trap
2m or less
2m or longer
- If the distance between the outdoor units becomes more than 2m, apply Oil Traps between the
gas pipes.
- If the outdoor unit is located lower than the main pipe, apply Oil Trap.
Examples of Wrong Pipe Connections
If the main pipe is
higher than the
outdoor units, oil is
accumulated in the
outdoor unit.
If there are differences in the height
between the outdoor units, oil is
accumulated in the lower outdoor unit.
Oil Trap
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 43
(Example 1)
Toward indoor unit
Toward indoor unit
(Example 2)
Toward indoor unit
Pipe inclination (2 or more)
Toward indoor unit
(Example 3)
Toward indoor unit
Toward indoor unit
- Apply Oil Trap as shown below when the length of the pipe between the outdoor units is more
than 2m. Otherwise, the unit may not operate properly.
(Example 1)
2m
Toward indoor unit
0.2m
(Example 2)
Oil Trap
Toward indoor unit
2m
2m
ENGLISH
- The pipes between the outdoor units must maintain horizontal levelness or give an inclination to
prevent a back flow toward the slave outdoor unit. Otherwise, the unit may not operate properly.
44 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
(Example 1)
Toward indoor unit
Toward indoor unit
(Example 2)
h
Toward indoor unit
(Example 3)
Oil Trap
h
h
0.2m
ENGLISH
- When connecting the pipes between the outdoor units, the accumulation of oil in the slave outdoor unit should be avoided. Otherwise, the unit may not operate properly.
Toward indoor unit
Toward indoor unit
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 45
The calculation of the additional charge should take into account the length of pipe and CF(correction Factor) value of indoor unit.
Additional charge(kg)
=
Total liquid pipe : Ø25.4 mm
x 0.480(kg/m)
+
Total liquid pipe : Ø22.2 mm
x 0.354(kg/m)
+
Total liquid pipe : Ø19.05 mm
x 0.266(kg/m)
+
Total liquid pipe : Ø15.88 mm
x 0.173(kg/m)
+
Total liquid pipe : Ø12.7 mm
x 0.118(kg/m)
+
Total liquid pipe : Ø9.52 mm
x 0.061(kg/m)
+
Total liquid pipe : Ø6.35 mm
x 0.022(kg/m)
+
CF value of indoor unit
Amount refrigerant of Indoor units
Example) 4Way Ceiling Cassette 14.5kW -1ea, Ceiling concealed Duct 7.3kW-2ea,
Wall Mounted 2.3kW-4ea
CF = 0.64 × 1 + 0.26 × 2 + 0.24 × 4 = 2.12 kg
Attach the additional refrigerant table of IDU.
! CAUTION
Use only 2-series of indoor unit. Ex) ARNU/H***2
ENGLISH
The amount of Refrigerant
46 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
! WARNING
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following equation for human safety.
Total amount of refrigerant in the system
≤ 0.44 ( kg / m3 )
Volume of the room at which Indoor Unit of the least capacity is installed
If the above equation can not be satisfied, then follow the following steps.
• Selection of air conditioning system: select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: installation position should be over 2m from the floor (Wall mounted type ’ Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation system
• Limitation in piping work
: Prepare for earthquake and thermal stress
Refrigerant charging
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Liquid pipe
Gas pipe
! WARNING
• Pipe to be vacuumed : gas pipe, liquid pipe
• If the refrigerant amount is not exact, it may not operate properly.
• If additionally bottled refrigerant amount is over 10%, condenser burst or insufficient indoor unit performance may be caused.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 47
ENGLISH
Distribution Method
Horizontal Distribution
Slave
Master
2nd
1st
Slave
3rd main pipe distribution
Master
Slave
Master
2nd
1st
2nd
1st
3rd
3rd
1st
Main pipe
Distribution
3rd
Main pipe
Distribution
Vertical Distribution
- Ensure that the branch pipes are attached vertically.
Slave
Master
Slave
Master
The others
Slave
Master
Slave
Master
Header
48 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Branch pipe Fitting
Y branch
Ⓐ To Branch Piping or Indoor Unit
Ⓑ To Outdoor Unit
B
A
• Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.)
Facing
downwards
Horizontal
plane
Facing
upwards
Within +/- 10
A
Viewed from point A
in direction of arrow
Within 3
Within 3
• There is no limitation on the joint mounting configuration.
• If the diameter of the refrigerant piping selected by the procedures described is different from
the size of the joint, the connecting section should be cut with a pipe cutter.
• Branch pipe should be insulated with the insulator in each kit.
Tape
(field supply)
Liquid and gas
pipe joints
Insulator
(included with kit)
Insulator for
field piping
Header
A
Ⓐ To Outdoor Unit Ⓑ To Indoor Unit
• The indoor unit having larger capacity must be installed closer to Ⓐ than smaller one.
• If the diameter of the refrigerant piping selected
by the procedures described is different from the
size of the joint, the connecting section should
be cut with a pipe cutter.
B
ⓒ Pipe cutter
C
• When the number of pipes to be connected
is smaller than the number of header
branches, install a cap to the unconnected
branches.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 49
B
Pinched pipe
• Fit branch pipe lie in a horizontal plane.
Horizontal plane
View from point B in the direction of the arrow
• Header should be insulated with the insulator in each kit.
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
• Joints between branch and pipe should be sealed with the tape included in each kit.
Tape
Insulator
Insulator of field pipe
• Any cap pipe should be insulated using the insulator provided with each kit and then taped as
described above.
Insulator for cap pipe
Cap pipe
Tape
ENGLISH
• When the number of indoor units to be connected to the branch pipes is less than the number
of branch pipes available for connection then cap pipes should be fitted to the surplus branches.
50 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Y branch pipe
[unit:mm]
Models
Gas pipe
Liquid pipe
I.D12.7
I.D15.88
I.D12.7
I.D6.35
I.D.6.35 I.D9.52
I.D15.88
I.D9.52
1
I.D15.88
I.D12.7
ARBLN01621
281
292
281
292
1
I.D19.05
74
I.D.6.35
I.D.9.52
74
O.D15.88
O.D9.52
I.D12.7
70
70
0
I.D22.2
I.D19.05
I.D15.88
I.D19.05 I.D12.7
2
1
I.D12.7
390
413
ARBLN03321
O.D19.0 5 I.D22.2
3
I.D28.58 O.D25.4
3
O.D19.0 5
1
70
I.D9.52
I.D9.52
I.D19.05
83
I.D15.88
I.D12.7
I.D25.4
I.D12.7
321
332
I.D25.4
11 0
I.D19.05
I.D19.05
I.D28.58
I.D22.2
I.D31.8
I.D19.05
I.D15.88
I.D12.7
376
404
I.D28.58 I.D31.8
O.D19.0 5 I.D22.2
1
120
I.D15.88
I.D15.88
I.D19.05
96
O.D1 2.7
I.D28.58
I.D9.52 I.D6.35
O.D12. 7
3
11 0
70
I.D34.9
I.D38.1
I.D28.58
I.D41.3
I.D15.88
2
I.D9.52
2
120
I.D34.9
83
3
371
394
3
90
I.D12.7
2
I.D12.7
I.D15.88 I.D19.05
3
I.D34.9 O.D31. 8
2
O.D22.2
I.D12.7
I.D15.88
2
1
ARBLN07121
74
I.D22.2
2
80
I.D6.35
I.D12.7
I.D6.35
I.D9.52
I.D19.05
I.D22.2
I.D19.05
I.D15.88
2
1
I.D28.58
I.D34.9
I.D22.2
I.D38.1
471
517
ARBLN14521
2
O.D34.9
I.D41.3
3
I.D.44.48
I.D41.3
I.D22.2
I.D.22.2
I.D.19.05
2
I.D.44.48
I.D38.1 134
420
490
I.D.25.4
I.D.22.2
I.D.19.05 96
3
I.D.53.98
I.D.34.9 I.D31.8
I.D.28.58
O.D.44.48
O.D.38.1
2 3
X2
X2
2 3
O.D.28.58
3
100
I.D12.7
I.D.19.05
3
70
11 0
80
I.D.25.4
I.D25.4
2
175
I.D9.52
O.D12. 7
I.D6.35
3
I.D.44.48
I.D41.3
I.D38.1
I.D.53.98
3
O.D15.88
O.D19.0 5
I.D22.2
3
11 0
1
ARBLN23220
I.D12.7
I.D9.52
2
I.D19.05
2
O.D15.88
O.D15.88
130
I.D22.2
90
O.D28.58
I.D12.7
3
416
444
I.D38.1
3
O.D22.2
120
I.D15.88
I.D19.05
I.D12.7 96
I.D22.2
3
I.D19.05 I.D15.88 O.D38.1 I.D41.3
3
125
O.D.22.2
120
346
379
I.D.25.4
I.D.22.2
115
I.D.15.88
O.D.19.05
3
I.D.15.88
I.D.12.7
X2
2 3
110
I.D9.52
O.D12.7
I.D6.35
3
110
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 51
[unit:mm]
Models
Gas pipe
Liquid pipe
360
360
120
120
ID12.7
4 branch
ARBL054
ID6.35
ID12.7
ID6.35
ID9.52
ID15.88
150
120
ID15.88
ID9.52
120
ID12.7
ID15.88
ID19.05
ID9.52
540
540
120
120
ID12.7
7 branch
ARBL057
ID6.35
ID12.7
ID15.88
ID15.88
120
ID9.52
150
ID15.88
ID19.05
400
ID9.52
360
160
120
ID12.7
4 branch
ARBL104
ID6.35
ID19.05
120
ID15.88
ID28.58 ID25.4
ID6.35
ID9.52
150
120
ID9.52
ID22.2
700
120
160
ID15.88
ID6.35
ID6.35
ID12.7
ID19.05
ID15.88
120
ID28.58 ID25.4
150
ID9.52
ID9.52
ID12.7
ID22.2
760
120
150
ID9.52
760
160
160
ID15.88
ID15.88
ID12.7
ID12.7
ID19.05
ID15.88
ID28.58
ID25.4
120
150
ID19.05
ID15.88
ID22.2
ID28.58
ID25.4
120
150
ID22.2
700
775
182
ID12.7
107
60*9=540
ID15.88
10 branch
ARBL2010
150
ID9.52
ID12.7
580
10 branch
ARBL1010
120 150
ID12.7
ID15.88
7 branch
ARBL107
150
ID6.35
ID6.35
ID19.05
ID15.88
ID31.8
ID34.9
120
150
ID28.58
ID9.52
120
ID9.52
ID15.88
150
ID19.05
ENGLISH
Header
52 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
Leak test
Leak test should be made by pressurizing nitrogen gas to 3.8 MPa(38.7kgf/cm2). If the pressure
does not drop for 24 hours, the system passes the test. If the pressure drops, check where the
nitrogen leaks. For the test method, refer to the following figure. (Make a test with the service
valves closed. Be also sure to pressurize liquid pipe, gas pipe and high/low pressure common
pipe)
The test result can be judged good if the pressure has not be reduced after leaving for about one
day after completion of nitrogen gas pressurization.
Slave 1 outdoor unit
Master outdoor unit
Close
Gas pipe
Liquide pipe
Close
Close
Gas pipe
Nitrogen gas
cylinder
Close
Liquide pipe
ENGLISH
Leak Test and Vacuum drying
Liquid side
Indoor unit
Gas side
! WARNING
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test or air purge. Do not compress air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
!
NOTE
If the ambient temperature differs between the time when pressure is applied and when the pressure drop is
checked, apply the following correction factor
There is a pressure change of approximately 0.1 kg/cm2 (0.01 MPa) for each 1°C of temperature difference.
Correction= (Temp. at the time of pressurization – Temp. at the time of check) X 0.1
For example: Temperature at the time of pressurization (3.8 MPa) is 27 °C
24 hour later: 3.73 MPa, 20°C
In this case the pressure drop of 0.07 is because of temperature drop
And hence there is no leakage in pipe occurred.
! CAUTION
To prevent the nitrogen from entering the refrigeration system in the liquid state, the top of
the cylinder must be at higher position than the bottom when you pressurize the system.
Usually the cylinder is used in a vertical standing position.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 53
Slave 1 outdoor unit
Vacuum
pump
Master outdoor unit
Close
Close
Gas pipe
Gas pipe
Liquide pipe
Liquide pipe
Close
Close
Scale
Use a graviometer. (One that
can measure down to 0.1kg). If
you are unable to prepare such a
high-precision gravimeter you
may use a charge cylinder.
Liquid side
Indoor unit
Gas side
! WARNING
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test or air purge. Do not compress
air or Oxygen and do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
!
NOTE
Always add an appropriate amount of refrigerant. (For the refrigerant additional charge)
Too much or too little refrigerant will cause trouble.
To use the Vacuum Mode
(If the Vacuum mode is set, all valves of Indoor units and Outdoor units will be opened.)
! WARNING
When installing and moving the air conditioner to another site, recharge after perfect evacuation.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may
malfunction and the unit may be damaged.
ENGLISH
Vacuum
Vacuum drying should be made from the service port provided on the outdoor unit’s service valve to the
vacuum pump commonly used for liquid pipe, gas pipe and high/low pressure common pipe. (Make Vacuum
from liquid pipe, gas pipe and high/low pressure common pipe with the service valve closed.)
* Never perform air purging using refrigerant.
• Vacuum drying: Use a vacuum pump that can evacuate to -100.7kPa (5 Torr, -755mmHg).
- Evacuate the system from the liquid and gas pipes with a vacuum pump for over 2 hrs and bring
the system to -100.7kPa. After maintaining system under that condition for over 1 hr, confirm
the vacuum gauge rises. The system may contain moisture or leak.
- Following should be executed if there is a possibility of moisture remaining inside the pipe.
(Rainwater may enter the pipe during work in the rainy season or over a long period of time)
After evacuating the system for 2 hrs, give pressure to the system to 0.05MPa(vacuum break)
with nitrogen gas and then evacuate it again with the vacuum pump for 1hr to -100.7kPa(vacuum drying). If the system cannot be evacuated to -100.7kPa within 2 hrs, repeat the steps of
vacuum break and its drying. Finally, check if the vacuum gauge does not rise or not, after maintaining the system in vacuum for 1 hr.
54 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
ENGLISH
Vacuum Mode
This function is used for creating vacuum in the system after compressor replacement, ODU
parts replacement or IDU addition/replacement.
Vacuum mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“SVC” Push the ‘●’ button
DIP SWITCH
7-Segment
Select the Function using ‘▶’, ‘◀’ Button : :
“Se3” Push the ‘●’ button
SW04C ( X : cancel)
Start the vacuum mode : “VACC”
ODU V/V open
ODU EEV open
IDU EEV open
SW03C ( ȯ : forward)
SW02C (ȭ : backward)
SW01C (Ɨ : confirm)
SW01D (reset)
Vacuum mode off method
Dip switch off and push the reset button on Master unit PCB
! CAUTION
ODU operation stops during vacuum mode. Compressor can't operate.
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT 55
Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint
between indoor unit and insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to insulation work to ceiling plenum.
Heat insulation Adhesive + Heat - resistant polymaterial
ethylene foam + Adhesive tape
Indoor
Vinyl tape
Floor
exWater-proof
hemp cloth +
Outer
posed
Bronze asphalt
covering
hemp cloth +
Outdoor Water-proof
Zinc plate + Oily paint
Ⓐ Heat insulation material
Ⓑ Pipe
Ⓒ Outer covering(Wind the connection part
and cutting part of heat insulation material
with a finishing tape.)
!
When using polyethylene cover as covering material, asphalt roofing shall not be
required.
• Do not insulate gas or low pressure pipe and liquid or high
pressurepipe together.
Liquid pipe
Gas pipe
Power cables
Finishing tape
Insulating material
Communication cables
Bad
example
NOTE
• Be sure to fully insulate connecting portion.
These parts are not insulated.
Power cables Communication cables
Good
example
Separ
-ation
Liquid pipe
Gas pipe
Power cables
Insulating material
Communication cables
Penetrations
Inner wall (concealed)
Outer wall
A
E
B
A
B
Floor (fireproofing)
D
Roof pipe shaft
G
F
Ⓐ Sleeve
Ⓑ Heat insulating material
B
Ⓒ Lagging
Ⓓ Caulking material
Ⓔ Band
I
Ⓕ Waterproofing layer
Ⓖ Sleeve with edge
Penetrating portion on fire Ⓗ Lagging material
Ⓘ Mortar or other incombustible caulking
limit and boundary wall
Ⓙ Incombustible heat insulation material
I
Outer wall (exposed)
D
C
J
D
B
H
G
B
A
1m
1m
When filling a gap with mortar, cover the
penetration part with steel plate so that
the insulation material will not be caved
in. For this part, use incombustible materials for both insulation and covering.
(Vinyl covering should not be used.)
ENGLISH
Thermal insulation of refrigerant piping
56 ELECTRICAL WIRING
ENGLISH
ELECTRICAL WIRING
Caution
- Follow ordinance of your governmental organization for technical standard related to electrical
equipment, wiring regulations and guidance of each electric power company.
! WARNING
Be sure to have authorized electrical engineers do the electric work using special circuits in
accordance with regulations and this installation manual. If power supply circuit has a lack of
capacity or electric work deficiency, it may cause an electric shock or fire.
- Install the Outdoor Unit communication cable away from the power source wiring so that it is not affected by electric noise from the power source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outdoor Unit.
! CAUTION
Be sure to correct the outdoor unit to earth. Do not connect ground wire to any gas pipe, liquid
pipe, lightening rod or telephone earth line. If earth is incomplete, it may cause an electric shock.
- Give some allowance to wiring for electrical part box of Indoor and Outdoor Units, because the
box is sometimes removed at the time of service work.
- Never connect the main power source to terminal block of communication cable. If connected,
electrical parts will be burnt out.
- Use 2-core shield cable for communication cable.(O mark in the figure below) If communication
cable of different systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations. (
mark in the figure below)
- Only the communication cable specified should be connected to the terminal block for Outdoor
Unit communication.
Outdoor Unit
Outdoor Unit
Indoor
Unit
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Outdoor Unit
Indoor
Unit
Remote
control
Remote
control
Outdoor Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
control
2-Core Shield Cable
Remote
control
Indoor
Unit
Remote
control
Multi-Core Cable
Remote
control
ELECTRICAL WIRING 57
Slave1
Outdoor Unit
Slave2
Master
Indoor
Unit
Slave2
Indoor
Unit
Remote
controller
Indoor
Unit
Remote
controller
Outdoor Unit
Slave1
Slave1
Indoor
Unit
Remote
controller
Master
ENGLISH
Outdoor Unit
Master
Remote
controller
Outdoor Unit
Slave2
Master
Indoor
Unit
Slave1
Slave2
Indoor
Unit
Indoor
Unit
Remote
controller
Indoor
Unit
Remote
controller
Remote
controller
2-Core Shield Cable
Remote
controller
Multi-Core Cable
! CAUTION
• Use the 2-core shield cables for communication cables. Never use them together with power
cables.
• The conductive shielding layer of cable should be grounded to the metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading capacitor not only will deteriorate power factor improvement effect, but also may cause capacitor abnormal heating. Therefore, never install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2%. If it is greater the units lifespan will be reduced.
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
Round pressure terminal
Power cable
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in the figure below.
- For wiring, use the designated power cable and connect firmly, then secure to prevent outside
pressure being exerted on the terminal block.
- Use an appropriate screwdriver for tightening the terinal screws. A screwdriver with a small
head will strip the head and make proper tighterning impossible.
- Over-tightening the terminal screws may break them.
! CAUTION
When the 400 volt power supply is applied to “N” phase by mistake, check damaged parts in
control box and replace them.
58 ELECTRICAL WIRING
ENGLISH
Control box and connecting position of wiring
- Remove all of the screws at front panel and remove the panel by pulling it forward.
- Connect communication cable between main and sub outdoor unit through the terminal block.
- Connect communication cables between outdoor unit and indoor units through the terminal
block.
- When the central control system is connected to the outdoor unit, a dedicated PCB must be
connected between them.
- When connecting communication cable between outdoor unit and indoor units with shielded
cable, connect the shield ground to the earth screw.
Front Panel
! WARNING
The temperature sensor for outdoor air should not be exposed to direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
[Heat pump]
UX3
UX2
Main PCB
Noise Filter
External PCB
Take care of the phase
sequence of 3-phase 4-wire
power system
ELECTRICAL WIRING 59
ENGLISH
Communication and Power Cables
Communication cable
- Types : shielding cable
- Cross section : 1.0~1.5mm2
- Maximum allowable temperature: 60°C
- Maximum allowable cable length: under 1000m
Remote control cable
- Types : 3-core cable
Central control cable
Product type
ACP&AC Manager
AC Smart
Simple central controller
Cable type
2-core cable (Shielding cable)
2-core cable (Shielding cable)
4-core cable (Shielding cable)
Diameter
1.0~1.5mm2
1.0~1.5mm2
1.0~1.5mm2
Separation of communication and power cables
- If communication and power cables are run alongside each other then there is a strong likelihood of operational faults developing due to interference in the signal wiring caused by electrostatic and electromagnetic coupling.
The tables below indicates our recommendation as to appropriate spacing of communication
and power cables where these are to be run side by side
Current capacity of power cable
10A
50A
100V or more
100A
Exceed 100A
!
Spacing
300mm
500mm
1000mm
1500mm
NOTE
• The figures are based on assumed length of parallel cabling up to 100m. For length in excess of 100m the figures will have to be recalculated in direct proportion to the additional
length of cable involved.
• If the power supply waveform continues to exhibit some distortion the recommended
spacing in the table should be increased.
- If the cable are laid inside conduits then the following point must also be taken into account when grouping various cable together for introduction into the conduits
- Power cable(including power supply to air conditioner) and communication cables
must not be laid inside the same
- In the same way, when grouping the power wires and communication cables should not
be bunched together.
! CAUTION
If apparatus is not properly earthed then there is always a risk of electric shocks, the earthing of
the apparatus must be carried out by a qualified person.
60 ELECTRICAL WIRING
ENGLISH
Wiring of main power supply and equipment capacity
- Use a separate power supply for the Outdoor Unit and Indoor Unit.
- Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when
proceeding with the wiring and connections.
- The cable size is the minimum value for metal conduit wiring. The power cord size should be 1
rank thicker taking into account the line voltage drops. Make sure the power-supply voltage
does not drop more than 10%.
- Specific wiring requirements should adhere to the wiring regulations of the region.
- Power supply cords of parts of appliances for outdoor use should not be lighter than polychloroprene sheathed flexible cord.
- Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately
from the power supply.
! WARNING
• Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.
• Make sure to use specified cables for connections so that no external force is imparted to
terminal connections. If connections are not fixed firmly, it may cause heating or fire.
• Make sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
! CAUTION
• Some installation site may require attachment of an earth leakage breaker. If no earth leakage
breaker is installed, it may cause an electric shock.
• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or
copper wire with too large capacity may cause a malfunction of unit or fire.
ELECTRICAL WIRING 61
ENGLISH
Field Wiring
Single outdoor unit
Outdoor
Power supply
(3Ø 4wires)
[Outdoor Unit]
(Main Switch)
R S T N
Switch
Frequency
Fuse
Indoor
Power supply
(1Ø 2wires)
60Hz
50Hz
Voltage range(V)
Outdoor
Indoor
380V
220V
380~415V 220~240V
N
L
Power cable
(4 Wires Cable)
Power cable
(2 Wires Cable)
Communication cable
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Power cable
(2 Wires Cable)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Communication cable
(3 Wires Cable)
[Indoor Units]
! WARNING
• Indoor Unit ground wires are required for preventing electrical shock accident during current
leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately
from the power supply.
• Install the main switch that can interrupt all the power sources in an integrated manner because
this system consists of the equipment utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, momentary blackout or the power
goes on and off while the product is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.
[Heat Pump]
Between Indoor and Master Outdoor unit
SODU B SODU A
3
4
IDU B
IDU A
3
INT B
4
INT A
The GND terminal at the main PCB is a ‘-’ terminal for day contact, it is not the point to
make ground connection.
Master
Outdoor Unit
3
4
62 ELECTRICAL WIRING
ENGLISH
Series outdoor units
When the power source is connected In series between the units.
Outdoor
Power supply
(3Ø 4wires)
[Master]
[Slave1]
[Slave2]
[Slave3]
(Main Switch)
R S T N
Switch
Fuse
Indoor
Power supply
(1Ø 2wires)
N
L
Power cable
(4 Wires Cable)
Power cable
(2 Wires Cable)
Communication cable
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Power cable
(2 Wires Cable)
Frequency
60Hz
50Hz
Communication cable
(3 Wires Cable)
Voltage range(V)
Outdoor
Indoor
380V
220V
380~415V 220~240V
[Indoor Units]
! WARNING
When the total capacity is over than as follow, the power source do not use in series between the units.
The First terminal block could be burnt out. (Heat Pump : 68 Hp)
When the power source is supplied to Each outdoor unit individually.
Outdoor
Power supply
(3Ø 4wires)
[Master]
[Slave1]
[Slave2]
[Slave3]
(Main Switch)
R S T N
Switch
Fuse
R S T N
R S T N
Switch
Switch
Fuse
Fuse
R S T N
Switch
Fuse
Indoor
Power supply
(1Ø 2wires)
L
N
Power cable
(2 Wires Cable)
Communication cable
(2 Wires Cable)
Power cable
(4 Wires Cable)
Pull Box
(Installer option)
Frequency
60Hz
50Hz
Voltage range(V)
Outdoor
Indoor
380V
220V
380~415V 220~240V
Power cable
(2 Wires Cable)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
Communication cable
(3 Wires Cable)
[Indoor Units]
Pull Box
(Installer option)
Power cable
(2 Wires Cable)
ELECTRICAL WIRING 63
• Indoor Unit ground wires are required for preventing electrical shock accident during current
leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately
from the power supply.
• Install the main switch that can interrupt all the power sources in an integrated manner because
this system consists of the equipment utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, momentary blackout or the power
goes on and off while the product is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and other parts.
[Heat Pump]
Between Indoor and Master Outdoor unit
SODU B SODU A
3
4
IDU B
IDU A
3
INT B
4
INT A
Master
Outdoor Unit
3
4
SODU B SODU A
IDU B
IDU A
INT B
INT A
Master
Outdoor unit
SODU B SODU A
IDU B
IDU A
INT B
INT A
Slave1
Outdoor Unit
SODU B SODU A
IDU B
IDU A
INT B
INT A
Slave2
Outdoor Unit
SODU B SODU A
IDU B
IDU A
INT B
INT A
Slave3
Outdoor Unit
The GND terminal at the main PCB is a ‘-’ terminal for dry contact.
It is not the point to make ground connection.
- Make sure that terminal number of master and slave outdoor units are matched.(A-A,B-B)
ENGLISH
! WARNING
64 ELECTRICAL WIRING
ENGLISH
Example) Connection of transmission wire
[BUS type]
[STAR type]
- Connection of communication cable must be
installed like below figure between indoor
unit to outdoor unit.
- Abnormal operation can be caused by communication defect, when connection of
communication cable is installed like below
figure(STAR type).
ELECTRICAL WIRING 65
ENGLISH
Example) Connection of power and communication cable (UX2)
Left Side
Right Side
Main power
terminal block
Main power
terminal block
Ground wire
Ground wire
Power/
Ground cable
Power/
Ground cable
Over
50mm gap
Over
50mm gap
Communication
cable
Communication
cable
Front Side 1
Front Side 2
Main power
terminal block
Main power
terminal block
Ground wire
Ground wire
Power/
Ground cable
Over
50mm gap
Communication cable
Main Power Connection
Power/Ground cable
Communication
cable
Over
50mm gap
Communication Connection
Main power
terminal block
Insulation sleeves
attachments
Fix firmly not
to be displaced
ODU-IDU
Communication cable
ODU-ODU
Communication cable
! CAUTION
It should be wiring power cables or communication cables to avoid interference with the oil level
sensor. Otherwise, That oil level sensor would be operated abnormally.
66 ELECTRICAL WIRING
ENGLISH
Example) Connection of power and communication cable (UX3)
Left Side
Right Side
Main power
terminal
werblock
Main power
terminal block
Ground
e wire
Ground wire
Power/
Ground
e cable
Power/
Ground cable
wer wer
e
Over
50mm gap
Over
50mm gap
Communication
cable
Communication
cable
Front Side 1
Front Side 2
Main power
terminal block
Main power
terminal block
Ground wire
Ground wire
Power/
Ground cable
Over
50mm gap
Communication cable
Main Power Connection
Power/Ground cable
Over
50mm gap
Communication
cable
Communication Connection
Main power
terminal block
Insulation sleeves
attachments
Fix firmly not
to be displaced
ODU-IDU
Communication cable
ODU-ODU
Communication cable
! CAUTION
It should be wiring power cables or communication cables to avoid interference with the oil level
sensor. Otherwise, That oil level sensor would be operated abnormally.
ELECTRICAL WIRING 67
ENGLISH
Checking the setting of outdoor units
Checking according to dip switch setting
- You can check the setting values of the Master outdoor unit from the 7 segment LED.
The dip switch setting should be changed when the power is OFF.
Checking the initial display
The number is sequentially appeared at the 7 segment in 5 seconds after applying the power.
This number represents the setting condition. (For example, represents R410A 30HP)
• Initial display order
Order
①
②
③
④
⑤
⑥
⑦
⑧
No
8~20
10~20
10~20
10~20
8~80
1
2
3
38
46
22
1
2
• Master Unit
Dip switch setting
• Example) ARUN620LTE4
Mean
Master model capacity
Slave 1 model capacity
Slave 2 model capacity
Slave 3 model capacity
Total capacity
Cooling Only
Heat Pump
Heat Recovery
380V model
460V model
220V model
LTE4
LTS4
①
②
③
④
⑤
⑥
⑦
⑧
18
16
14
14
62
2
38
1
• Slave Unit
Dip switch setting
ODU Setting
Slave 1
Slave 2
Slave 3
68 ELECTRICAL WIRING
ENGLISH
Automatic Addressing
The address of indoor units would be set by Automatic Addressing
- Wait for 3 minutes after supplying power.
(Master and Slave outdoor units, indoor units)
- Press RED button of the outdoor units for 5 seconds. (SW01C)
- A “88” is indicated on 7-segment LED of the outdoor unit PCB.
- For completing addressing, 2~7 minutes are required depending on numbers of connected indoor units
- Numbers of connected indoor units whose addressing is completed are indicated for 30 seconds on 7-segment LED of the outdoor unit PCB
- After completing addressing, address of each indoor unit is indicated on the wired remote control display window. (CH01, CH02, CH03, ……, CH06 : Indicated as numbers of connected indoor units)
[Heat Pump (MAIN PCB)]
DIP-SWITCH 7 - Segment
SW04C ( : cancel)
SW03C (ඖ: forward)
SW02C (ඔ: backward)
SW01C (̻: confirm)
SW01D (reset)
! CAUTION
• In replacement of the indoor unit PCB, always perform Automatic addressing setting again (At
that time, please check about using Independent power module to any indoor unit.)
• If power supply is not applied to the indoor unit, operation error occur.
• Automatic Addressing is only possible on the master Unit.
• Automatic Addressing has to be performed after 3 minutes to improve communication.
ELECTRICAL WIRING 69
ENGLISH
The Procedure of Automatic Addressing
Power On
Waiting 3 minutes
Press RED Button for 5 sec.
(SW01C)
Automatic addressing start
7-segment LED
= 88
Don’t press RED Button
(SW01C)
• Automatic addressing setting end
Numbers of indoor unit connection set whose
addressing is completed are indicated for 30seconds
on 7-segment LED after completing setting
Waiting about 2~7 minutes
7-segment LED
= 88
YES
OK
NO
Check the connections
of communication cable
Indoor address number is displayed on wired remote control or
indoor unit display window. It is not an error message, will
disappeared when on/off button is pressed on remote control
ex) Display of 01, 02, ..., 15 means connection of 15 indoor units
and Automatic addressing is completed normally.
70 ELECTRICAL WIRING
ENGLISH
Setting the function
Select the mode/function/option/value using ‘▶’, ‘◀’ Button and confirm that using the ‘●’ button after dip switch No.5 is turned on.
DIP-SW01 7 - Segment
SW04C ( : cancel)
SW03C (ඖ: forward)
SW02C (ඔ: backward)
SW01C (̻: confirm)
SW01D (reset)
MODE
con- Display1
tent
FUNCTION
content
Cool & Heat
Selector
Static pressure
compensation
Night low noise
Installation
Overall defrost
ODU address
Snow removal &
rapid defrost
Target pressure
adjusting
OPTION
Display2
content
Display3
the
oFF op1~op2 selected
option
the
oFF op1~op3 selected
option
the
oFF op1~op12 selected
option
selected
the
on
oFF
option
VALUE
ACTION
con- Display4 implement Display5
tent
change the
set value
change the
set value
change the
set value
change the
set value
the change the
0~255 set
value
set value
the
change the
oFF op1~op3 selected
option
set value
selected the
change the
op1~op4
option
set value
-
-
blank
blank
blank
blank
blank
blank
blank
remarks
save in
EEPROM
save in
EEPROM
save in
EEPROM
save in
EEPROM
save in
EEPROM
save in
EEPROM
save in
EEPROM
* Functions save in EEPROM will be kept continuously, though the system power was reset.
ELECTRICAL WIRING 71
ENGLISH
Group Number setting
Group Number setting for Indoor Units
- Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off.
- The communication cables connected to CEN.A and CEN.B terminal should be connected to
central control of Outdoor Unit with care for their polarity (A-A, B-B ).
- Turn the whole system on.
- Set the group and Indoor Unit number with a wired remote control.
- To control several sets of Indoor Units into a group, set the group ID from 0 to F for this purpose.
Outdoor Units (External PCB)
SODU.B SODU.A
B
A
IDU.B
IDU.A
CEN.B
B(D)
CEN.A
DRY1
DRY2
GND
A(C)
Example) Group number setting
1 F
Group Indoor unit
1st number indicate the group number
2nd number point out indoor unit number
Group recognizing the central controller
No.0 group (00~0F)
No.1 group (10~1F)
No.2 group (20~2F)
No.3 group (30~3F)
No.4 group (40~4F)
No.5 group (50~5F)
No.6 group (60~6F)
No.7 group (70~7F)
No.8 group (80~8F)
No.9 group (90~9F)
No. A group (A0~AF)
No. B group (B0~BF)
No. C group (C0~CF)
No. D group (D0~DF)
No. E group (E0~EF)
No. F group (F0~FF)
12V
72 ELECTRICAL WIRING
ENGLISH
Cool & Heat selector
mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn1” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”,“op2” Push the ‘●’ button
Cool & Heat Selection mode is set
Function setting
Switch control
Switch(Phase)
Switch(Bottom)
Right
Left
Right
Right
Left
Left side
oFF
Not operate
Not operate
Not operate
Right side
Switch (Phase)
Switch (Bottom)
! CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• If use a function, first install a Cool & Heat selector.
Function
op1(mode)
Cooling
Heating
Fan mode
op2(mode)
Cooling
Heating
Off
ELECTRICAL WIRING 73
This function secures the air flow rate of ODU, in case static pressure has been applied like using
duct at fan discharge of ODU.
Static pressure compensation mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn2” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op3” Push the ‘●’ button
Start the Static pressure compensation mode :
Save the selected option value in EEPROM
FAN Maximum RPM of each step
Capacity
Max. RPM
Standard
op1
op2
op3
8~12 HP
730
760
780
800
14~20 HP
950
1020
1050
1130
ENGLISH
Static pressure compensation mode
74 ELECTRICAL WIRING
ENGLISH
Night Low Noise Function
In cooling mode, this function makes the ODU fan operate at low RPM to reduce the fan noise of
ODU at night which has low cooling load.
Night low noise function setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn3” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op12” Push the ‘●’ button
Start the Night low noise function :
Save the selected option value in EEPROM
Time Settings
Step
op1
op2
op3
op4
op5
op6
op7
op8
op9
op10
op11
op12
Noise
Judgment
Operation
Time(Hr)
Time(Hr)
8
9
6.5
10.5
5
12
8
9
6.5
10.5
5
12
8
9
6.5
10
5
12
Continuous operation
Continuous operation
Continuous operation
Heat Pump
Step
op1~op3, op10
op4~op6, op11
op7~op9, op12
! CAUTION
• Request installer to set the function during installation.
• If ODU RPM changes, cooling capacity may go down.
Capacity
8~12HP
14~20HP
Noise(dB)
55
59
52
56
49
53
ELECTRICAL WIRING 75
ENGLISH
Overall defrost mode
mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn4” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on” ~ “oFF” Push the ‘●’ button
Overall defrost mode is set
mode setting
- on: Operate overall defrost
- off: Operate partial defrost
! CAUTION
• Ask an authorized technician to setting a function.
* ARUN***LTS4 models operate only overall defrost function.
76 ELECTRICAL WIRING
ENGLISH
Setting the ODU address
mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn5” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“0” ~ “255” Push the ‘●’ button
ODU address is set
! CAUTION
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
ELECTRICAL WIRING 77
ENGLISH
Snow removal & rapid defrost
mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn6” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1” ~ “op3” Push the ‘●’ button
Mode is set
mode setting
setting
Mode
oFF
Not setting
op1
Snow removal mode
op2
Rapid defrost mode
op3
Snow removal mode. + Rapid defrost mode.
! CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
78 ELECTRICAL WIRING
ENGLISH
Target pressure adjusting
mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn8” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“HEAT” , “COOL” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1” ~ “op4” Push the ‘●’ button
Target pressure is set
Setting
mode
Purpose
Condensing
temperature
variation
-3 °C
Evaporating
temperature
variation
+2 °C
“Heat”
“Cool”
op1
Increase capacity
Increase capacity
op2
Decrease power consumption
Increase capacity
-1.5 °C
-2 °C
op3
Decrease power consumption Decrease power consumption
+2.5 °C
-4 °C
op4
Decrease power consumption Decrease power consumption
-4.5 °C
-6 °C
! CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• Change a power consumption or capacity.
ELECTRICAL WIRING 79
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7segment LED of outdoor unit control board as shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd,3rd LED of 7-segment indicates error number, 4th LED indicates unit number.
Ex)
Repeat
Error No.
Error No. of Unit
Error No. of Compressor
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Display
Title
0 1 - Air temperature sensor of indoor unit
0 2 - Inlet pipe temperature sensor of indoor unit
Indoor unit related error
Communication error : wired remote
controller ÷ indoor unit
Cause of Error
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor unit is open or short
Failing to receive wired remote controller signal in indoor
unit PCB
0 3
-
0 4
- Drain pump
Malfunction of drain pump
0 5
Communication error : outdoor unit ÷
indoor unit
Failing to receive outdoor unit signal in indoor unit PCB
0 6
-
0 9
- Indoor EEPROM Error
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
1 0
- Poor fan motor operation
Disconnecting the fan motor connector/Failure of indoor
fan motor lock
1 7
Outdoor unit related error
1
2
2 1
3
4
Outlet pipe temperature sensor of indoor
unit
Inlet Air temperature sensor of FAU
Master Outdoor Unit Inverter Compressor IPM Fault
Slave1 Outdoor Unit Inverter Compressor IPM Fault
Slave2 Outdoor Unit Inverter Compressor IPM Fault
Slave3 Outdoor Unit Inverter Compressor IPM Fault
Outlet pipe temperature sensor of indoor unit is open or
short
Air temperature sensor of indoor unit is open or short
Master Outdoor Unit Inverter Compressor Drive IPM Fault
Slave1 Outdoor Unit Inverter Compressor Drive IPM Fault
Slave2 Outdoor Unit Inverter Compressor Drive IPM Fault
Slave3 Outdoor Unit Inverter Compressor Drive IPM Fault
1
Inverter Board Input Over Current(RMS) of Master Outdoor Unit Inverter Board Input Current excess
Master Outdoor Unit
(RMS)
2
Inverter Board Input Over Current(RMS) of Slave1 Outdoor Unit Inverter Board Input Current excess
Slave1 Outdoor Unit
(RMS)
3
Inverter Board Input Over Current(RMS) of Slave2 Outdoor Unit Inverter Board Input Current excess
Slave2 Outdoor Unit
(RMS)
4
Inverter Board Input Over Current(RMS) of Slave3 Outdoor Unit Inverter Board Input Current excess
Slave3 Outdoor Unit
(RMS)
2 2
ENGLISH
Self-Diagnosis Function
80 ELECTRICAL WIRING
ENGLISH
Display
Title
Cause of Error
Master Outdoor Unit Inverter Compres1
sor DC link Low Voltage
DC charging is not performed at Master Outdoor Unit
after starting relay turn on.
2
Slave1 Outdoor Unit Inverter Compressor DC link Low Voltage
DC charging is not performed at Slave1 Outdoor Unit
after starting relay turn on.
3
Slave2 Outdoor Unit Inverter Compressor DC link Low Voltage
DC charging is not performed at Slave2 Outdoor Unit
after starting relay turn on.
4
Slave3 Outdoor Unit Inverter Compressor DC link Low Voltage
DC charging is not performed at Slave3 Outdoor Unit
after starting relay turn on.
1
Master Outdoor Unit High Pressure
Switch
System is turned off by Master Outdoor Unit high pressure switch.
2
Slave1 Outdoor Unit High Pressure
Switch
System is turned off by slave1 Outdoor Unit high pressure switch.
3
Slave2 Outdoor Unit High Pressure
Switch
System is turned off by slave2 Outdoor Unit high pressure switch.
4
Slave3 Outdoor Unit High Pressure
Switch
System is turned off by slave3 Outdoor Unit high pressure switch.
1
Master Outdoor Unit Input Voltage
High/ Low Voltage
Master Outdoor Unit input voltage is over 487V or below
270V
2
Slave1 Outdoor Unit Input Voltage High/ Slave1 Outdoor Unit input voltage is over 487V or below
Low Voltage
270V
3
Slave2 Outdoor Unit Input Voltage High/ Slave2 Outdoor Unit input voltage is over 487V or below
Low Voltage
270V
4
Slave3 Outdoor Unit Input Voltage High/ Slave3 Outdoor Unit input voltage is over 487V or below
Low Voltage
270V
1
Master Outdoor Unit Inverter Compressor Start Failure
The First Start Failure by Master Outdoor Unit Inverter
Compressor Abnormality
2
Slave1 Outdoor Unit Inverter Compressor Start Failure
The First Start Failure by Slave1 Outdoor Unit Inverter
Compressor Abnormality
3
Slave2 Outdoor Unit Inverter Compressor Start Failure
The First Start Failure by Slave2 Outdoor Unit Inverter
Compressor Abnormality
4
Slave3 Outdoor Unit Inverter Compressor Start Failure
The First Start Failure by Slave3 Outdoor Unit Inverter
Compressor Abnormality
1
Master Outdoor Unit Inverter Compressor Over Current
Master Outdoor Unit Inverter Compressor Fault OR Drive
Fault
2
Slave1 Outdoor Unit Inverter Compressor Over Current
Slave1 Outdoor Unit Inverter Compressor Fault OR Drive
Fault
3
Slave2 Outdoor Unit Inverter Compressor Over Current
Slave2 Outdoor Unit Inverter Compressor Fault OR Drive
Fault
4
Slave3 Outdoor Unit Inverter Compressor Over Current
Slave3 Outdoor Unit Inverter Compressor Fault OR Drive
Fault
2 3
2 4
Outdoor unit related error
2 5
2 6
2 9
ELECTRICAL WIRING 81
Title
Cause of Error
Master Outdoor Unit Inverter Compres1
sor1 High Discharge Temperature
Master Outdoor Unit Inverter Compressor1 High Discharge Temperature
2
Slave1 Outdoor Unit Inverter Compressor1 High Discharge Temperature
Slave1 Outdoor Unit Inverter Compressor1 High Discharge Temperature
3
Slave2 Outdoor Unit Inverter Compressor1 High Discharge Temperature
Slave2 Outdoor Unit Inverter Compressor1 High Discharge Temperature
4
Slave3 Outdoor Unit Inverter Compressor1 High Discharge Temperature
Slave3 Outdoor Unit Inverter Compressor1 High Discharge Temperature
1
Master Outdoor Unit Inverter Compressor2 High Discharge Temperature
Master Outdoor Unit Inverter Compressor2 High Discharge Temperature
2
Slave1 Outdoor Unit Inverter Compressor2 High Discharge Temperature
Slave1 Outdoor Unit Inverter Compressor2 High Discharge Temperature
3
Slave2 Outdoor Unit Inverter Compressor2 High Discharge Temperature
Slave2 Outdoor Unit Inverter Compressor2 High Discharge Temperature
4
Slave3 Outdoor Unit Inverter Compressor2 High Discharge Temperature
Slave3 Outdoor Unit Inverter Compressor2 High Discharge Temperature
3 2
3 3
Outdoor unit related error
1 High Pressure of Master Outdoor Unit
High Pressure of Master Outdoor Unit
2 High Pressure of Slave1 Outdoor Unit
High Pressure of Slave1 Outdoor Unit
3 High Pressure of Slave2 Outdoor Unit
High Pressure of Slave2 Outdoor Unit
4 High Pressure of Slave3 Outdoor Unit
High Pressure of Slave3 Outdoor Unit
1 Low Pressure of Master Outdoor Unit
Low Pressure of Master Outdoor Unit
2 Low Pressure of Slave1 Outdoor Unit
Low Pressure of Slave1 Outdoor Unit
3 Low Pressure of Slave2 Outdoor Unit
Low Pressure of Slave2 Outdoor Unit
4 Low Pressure of Slave3 Outdoor Unit
Low Pressure of Slave3 Outdoor Unit
3 4
3 5
1
Master Outdoor Unit Low Compression
Ratio Limited
Master Outdoor Unit Low Compression Ratio Limited
2
Slave1 Outdoor Unit Low Compression
Ratio Limited
Slave1 Outdoor Unit Low Compression Ratio Limited
3
Slave2 Outdoor Unit Low Compression
Ratio Limited
Slave2 Outdoor Unit Low Compression Ratio Limited
4
Slave3 Outdoor Unit Low Compression
Ratio Limited
Slave3 Outdoor Unit Low Compression Ratio Limited
3 6
ENGLISH
Display
82 ELECTRICAL WIRING
ENGLISH
Display
Title
Cause of Error
Master Outdoor Unit Inverter Compres1
sor CT Sensor Fault
Master Outdoor Unit Inverter Compressor CT Sensor
open or short
2
Slave1 Outdoor Unit Inverter Compressor CT Sensor Fault
Slave1 Outdoor Unit Inverter Compressor CT Sensor
open or short
3
Slave2 Outdoor Unit Inverter Compressor CT Sensor Fault
Slave2 Outdoor Unit Inverter Compressor CT Sensor
open or short
4
Slave3 Outdoor Unit Inverter Compressor CT Sensor Fault
Slave3 Outdoor Unit Inverter Compressor CT Sensor
open or short
1
Master Outdoor Unit Inverter Compressor1 Discharge Temperature Sensor Fault
Master Outdoor Unit Inverter Compressor Discharge
Temperature Sensor open or short
2
Slave1 Outdoor Unit Inverter Compressor1 Slave1 Outdoor Unit Inverter Compressor Discharge
Discharge Temperature Sensor Fault
Temperature Sensor open or short
3
Slave2 Outdoor Unit Inverter Compressor1 Slave2 Outdoor Unit Inverter Compressor Discharge
Discharge Temperature Sensor Fault
Temperature Sensor open or short
4
Slave3 Outdoor Unit Inverter Compressor1 Slave3 Outdoor Unit Inverter Compressor Discharge
Discharge Temperature Sensor Fault
Temperature Sensor open or short
1
Master Outdoor Unit Low Pressure
Sensor Fault
2
Slave1 Outdoor Unit Low Pressure Sen- Slave1 Outdoor Unit Low Pressure Sensor open or
sor Fault
short
3
Slave2 Outdoor Unit Low Pressure Sen- Slave2 Outdoor Unit Low Pressure Sensor open or
sor Fault
short
4
Slave3 Outdoor Unit Low Pressure Sen- Slave3 Outdoor Unit Low Pressure Sensor open or
sor Fault
short
1
Master Outdoor Unit High Pressure
Sensor Fault
2
Slave1 Outdoor Unit High Pressure Sen- Slave1 Outdoor Unit High Pressure Sensor open or
sor Fault
short
3
Slave2 Outdoor Unit High Pressure Sen- Slave2 Outdoor Unit High Pressure Sensor open or
sor Fault
short
4
Slave3 Outdoor Unit High Pressure Sen- Slave3 Outdoor Unit High Pressure Sensor open or
sor Fault
short
1
Master Outdoor Unit Air Temperature
Sensor Fault
Master Outdoor Unit Air Temperature Sensor open or
short
2
Slave1 Outdoor Unit Air Temperature
Sensor Fault
Slave1 Outdoor Unit Air Temperature Sensor open or
short
3
Slave2 Outdoor Unit Air Temperature
Sensor Fault
Slave2 Outdoor Unit Air Temperature Sensor open or
short
4
Slave3 Outdoor Unit Air Temperature
Sensor Fault
Slave3 Outdoor Unit Air Temperature Sensor open or
short
4 0
4 1
Outdoor unit related error
4 2
4 3
4 4
Master Outdoor Unit Low Pressure Sensor open or
short
Master Outdoor Unit High Pressure Sensor open or
short
ELECTRICAL WIRING 83
Title
Cause of Error
Master Outdoor Unit Heat Exchanger
1
Temperature Sensor (Front side) Fault
Master Outdoor Unit Heat Exchanger Temperature Sensor(Front side) open or short
2
Slave1 Outdoor Unit Heat Exchanger
Temperature Sensor (Front side) Fault
Slave1 Outdoor Unit Heat Exchanger Temperature Sensor (Front side) open or short
3
Slave2 Outdoor Unit Heat Exchanger
Temperature Sensor (Front side) Fault
Slave2 Outdoor Unit Heat Exchanger Temperature Sensor(Front side) open or short
4
Slave3 Outdoor Unit Heat Exchanger
Temperature Sensor (Front side) Fault
Slave3 Outdoor Unit Heat Exchanger Temperature Sensor(Front side) open or short
1
Master Outdoor Unit Suction Temperature Sensor Fault
Master Outdoor Unit Suction Temperature Sensor open
or short
2
Slave1 Outdoor Unit Suction Temperature Sensor Fault
Slave1 Outdoor Unit Suction Temperature Sensor open
or short
3
Slave2 Outdoor Unit Suction Temperature Sensor Fault
Slave2 Outdoor Unit Suction Temperature Sensor open
or short
4
Slave3 Outdoor Unit Suction Temperature Sensor Fault
Slave3 Outdoor Unit Suction Temperature Sensor open
or short
1
Master Outdoor Unit Inverter Compressor2 Discharge Temperature Sensor Fault
Master Outdoor Unit Inverter Compressor2 Discharge
Temperature Sensor open or short
2
Slave1 Outdoor Unit Inverter Compressor2 Slave1 Outdoor Unit Inverter Compressor2 Discharge
Discharge Temperature Sensor Fault
Temperature Sensor open or short
3
Slave2 Outdoor Unit Inverter Compressor2 Slave2 Outdoor Unit Inverter Compressor2 Discharge
Discharge Temperature Sensor Fault
Temperature Sensor open or short
4
Slave3 Outdoor Unit Inverter Compressor2 Slave3 Outdoor Unit Inverter Compressor2 Discharge
Discharge Temperature Sensor Fault
Temperature Sensor open or short
1
Master Outdoor Unit Faulty IPM Temperature Sensor
Master Outdoor Unit IPM Temperature Sensor
short/open
2
Slave1 Outdoor Unit Faulty IPM Temperature Sensor
Slave1 Outdoor Unit IPM Temperature Sensor short/open
3
Slave2 Outdoor Unit Faulty IPM Temperature Sensor
Slave2 Outdoor Unit IPM Temperature Sensor short/open
4
Slave3 Outdoor Unit Faulty IPM Temperature Sensor
Slave3 Outdoor Unit IPM Temperature Sensor short/open
1
Omitting connection of R, S, T power of
Omitting connection of Master outdoor unit
Master Outdoor Unit
2
Omitting connection of R, S, T power of
Omitting connection of Slave1 Outdoor Unit
Slave1 Outdoor Unit
3
Omitting connection of R, S, T power of
Omitting connection of Slave2 Outdoor Unit
Slave2 Outdoor Unit
4
Omitting connection of R, S, T power of
Omitting connection of Slave3 Outdoor Unit
Slave3 Outdoor Unit
4 5
4 6
Outdoor unit related error
4 7
4 9
5 0
ENGLISH
Display
84 ELECTRICAL WIRING
ENGLISH
Display
Title
5 1 1 Excessive capacity of indoor units
Cause of Error
Excessive connection of indoor units compared to
capacity of Outdoor Unit
1
Communication error : inverter PCB
’ Main PCB
Failing to receive inverter signal at main PCB of
Master Outdoor Unit
2
Communication error : inverter PCB
’ Main PCB
Failing to receive inverter signal at main PCB of
Slave1 Outdoor Unit
3
Communication error : inverter PCB
’ Main PCB
Failing to receive inverter signal at main PCB of
Slave2 Outdoor Unit
4
Communication error : inverter PCB
’ Main PCB
Failing to receive inverter signal at main PCB of
Slave3 Outdoor Unit
5 3 1
Communication error : indoor unit ’
Main PCB of Outdoor Unit
Failing to receive indoor unit signal at main PCB of
Outdoor Unit .
1
Communication error : Main PCB ’
inverter PCB
Failing to receive signal main PCB at inverter PCB of Master Outdoor Unit
2
Communication error : Main PCB ’
inverter PCB
Failing to receive signal main PCB at inverter PCB of
Slave1 Outdoor Unit
3
Communication error : Main PCB ’
inverter PCB
Failing to receive signal main PCB at inverter PCB of
Slave2 Outdoor Unit
4
Communication error : Main PCB ’
inverter PCB
Failing to receive signal main PCB at inverter PCB of
Slave3 Outdoor Unit
5 9 1
Mixing Installation of Sub Outdoor
Unit
Mixing Installation of Old Sub Outdoor Unit and New
Slave Outdoor Unit
5 2
Outdoor unit related error
5 7
1
Inverter PCB EEPROM Error of Mas- Access Error of Inverter PCB of Master Outdoor
ter Outdoor Unit
Unit
2
Inverter PCB EEPROM Error of
Slave1 Unit
Access Error of Inverter PCB of Slave1 Outdoor Unit
3
Inverter PCB EEPROM Error of
Slave2 Unit
Access Error of Inverter PCB of Slave2 Outdoor Unit
4
Inverter PCB EEPROM Error of
Slave3 Unit
Access Error of Inverter PCB of Slave3 Outdoor Unit
1
Master Outdoor Unit Inverter
Heatsink High Temperature
System is turned off by Master Outdoor Unit Inverter Heatsink High Temperature
2
Slave1 Outdoor Unit Inverter
Heatsink High Temperature
System is turned off by Slave1 Outdoor Unit Inverter
Heatsink High Temperature
3
Slave2 Outdoor Unit Inverter
Heatsink High Temperature
System is turned off by Slave2 Outdoor Unit Inverter
Heatsink High Temperature
4
Slave3 Outdoor Unit Inverter
Heatsink High Temperature
System is turned off by Slave3 Outdoor Unit Inverter
Heatsink High Temperature
6 0
6 2
ELECTRICAL WIRING 85
Title
Cause of Error
Master Outdoor Unit Inverter Heatsink
1
Temperature Sensor Fault
Master Outdoor Unit Inverter Heatsink Temperature Sensor open or short
2
Slave1 Outdoor Unit Inverter Heatsink
Temperature Sensor Fault
Slave1 Outdoor Unit Inverter Heatsink Temperature Sensor open or short
3
Slave2 Outdoor Unit Inverter Heatsink
Temperature Sensor Fault
Slave2 Outdoor Unit Inverter Heatsink Temperature Sensor open or short
4
Slave3 Outdoor Unit Inverter Heatsink
Temperature Sensor Fault
Slave3 Outdoor Unit Inverter Heatsink Temperature Sensor open or short
6 5
1 Master Outdoor Unit Fan Lock
Restriction of Master Outdoor Unit
2 Slave1 Outdoor Unit Fan Lock
Restriction of Slave1 Outdoor Unit
3 Slave2 Outdoor Unit Fan Lock
Restriction of Slave2 Outdoor Unit
4 Slave3 Outdoor Unit Fan Lock
Restriction of Slave3 Outdoor Unit
6 7
Outdoor unit related error
1
Converter CT Sensor Error of Master
Outdoor Unit
Converter CT Sensor open or short of Master Outdoor
Unit
2
Converter CT Sensor Error of Slave1
Outdoor Unit
Converter CT Sensor open or short of Slave1 Outdoor
Unit
3
Converter CT Sensor Error of Slave2
Outdoor Unit
Converter CT Sensor open or short of Slave2 Outdoor
Unit
4
Converter CT Sensor Error of Slave2
Outdoor Unit
Converter CT Sensor open or short of Slave2 Outdoor
Unit
1
Master Outdoor Unit Fan CT Sensor
Error
Master Outdoor Unit Fan CT Sensor open or short
2
Slave1 Outdoor Unit Fan CT Sensor
Error
Slave1 Outdoor Unit Fan CT Sensor open or short
3
Slave2 Outdoor Unit Fan CT Sensor
Error
Slave2 Outdoor Unit Fan CT Sensor open or short
4
Slave3 Outdoor Unit Fan CT Sensor
Error
Slave3 Outdoor Unit Fan CT Sensor open or short
1
Master Outdoor Unit Fan DC Link High
Voltage Error
Master Outdoor Unit Fan DC Link High Voltage Error
2
Slave1 Outdoor Unit Fan DC Link High
Voltage Error
Slave1 Outdoor Unit Fan DC Link High Voltage Error
3
Slave2 Outdoor Unit Fan DC Link High
Voltage Error
Slave2 Outdoor Unit Fan DC Link High Voltage Error
4
Slave3 Outdoor Unit Fan DC Link High
Voltage Error
Slave3 Outdoor Unit Fan DC Link High Voltage Error
7 1
7 5
7 6
ENGLISH
Display
86 ELECTRICAL WIRING
ENGLISH
Display
Title
Cause of Error
Master Outdoor Unit Fan Over Current
1
Error
Master Outdoor Unit Fan Current is over 5A
2
Slave1 Outdoor Unit Fan Over Current
Error
Slave1 Outdoor Unit Fan Current is over 5A
3
Slave2 Outdoor Unit Fan Over Current
Error
Slave2 Outdoor Unit Fan Current is over 5A
4
Slave3 Outdoor Unit Fan Over Current
Error
Slave3 Outdoor Unit Fan Current is over 5A
1
Master Outdoor Unit Fan Start Failure
Error
Master Outdoor Unit Fan First Position Sensing
Failure
2
Slave1 Outdoor Unit Fan Start Failure
Error
Slave1 Outdoor Unit Fan First Position Sensing Failure
3
Slave2 Outdoor Unit Fan Start Failure
Error
Slave2 Outdoor Unit Fan First Position Sensing Failure
4
Slave3 Outdoor Unit Fan Start Failure
Error
Slave3 Outdoor Unit Fan First Position Sensing Failure
1
Master Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Master Outdoor Unit
Main MICOM and EEPROM or omitting EEPROM
2
Slave1 Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Slave1 Outdoor Unit
Main MICOM and EEPROM or omitting EEPROM
3
Slave2 Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Slave2 Outdoor Unit
Main MICOM and EEPROM or omitting EEPROM
4
Slave3 Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Slave3 Outdoor Unit
Main MICOM and EEPROM or omitting EEPROM
1
Master Outdoor Unit Fan PCB EEPROM Communication Fail Between Master Outdoor Unit
Error
Fan MICOM and EEPROM or omitting EEPROM
2
Slave1 Outdoor Unit Fan PCB EEPROM
Error
Communication Fail Between Slave1 Outdoor Unit
Fan MICOM and EEPROM or omitting EEPROM
3
Slave2 Outdoor Unit Fan PCB EEPROM
Error
Communication Fail Between Slave2 Outdoor Unit
Fan MICOM and EEPROM or omitting EEPROM
4
Slave3 Outdoor Unit Fan PCB EEPROM
Error
Communication Fail Between Slave3 Outdoor Unit
Fan MICOM and EEPROM or omitting EEPROM
7 7
Outdoor unit related error
7 9
8 6
8 7
ELECTRICAL WIRING 87
Title
Communication Error Between Master
1
Outdoor Unit and Other Outdoor Unit
Cause of Error
Failing to receive Slave Unit signal at main PCB of
Master Outdoor Unit
2
Communication Error Between Slave1
Outdoor Unit and Other Outdoor Unit
Failing to receive Master and other Slave Unit signal
at main PCB of Slave1 Outdoor Unit
3
Communication Error Between Slave2
Outdoor Unit and Other Outdoor Unit
Failing to receive Master and other Slave Unit signal
at main PCB of Slave2 Outdoor Unit
4
Communication Error Between Slave3
Outdoor Unit and Other Outdoor Unit
Failing to receive Master and other Slave Unit signal
at main PCB of Slave2 Outdoor Unit
1
Master Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Master
unit.
2
Slave1 Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Slave1
unit.
3
Slave2 Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Slave2
unit.
4
Slave3 Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Slave3
unit.
1
Master Outdoor Unit FAN IPM Fault
Error
Instant Over Current at Master Outdoor Unit Fan
IPM
2
Slave1 Outdoor Unit FAN IPM Fault
Error
Instant Over Current at Slave1 Outdoor Unit Fan IPM
3
Slave2 Outdoor Unit FAN IPM Fault
Error
Instant Over Current at Slave2 Outdoor Unit Fan IPM
4
Slave3 Outdoor Unit FAN IPM Fault
Error
Instant Over Current at Slave3 Outdoor Unit Fan IPM
1
Master Outdoor Unit Fan DC Link
Low Voltage Error
Master Outdoor Unit Fan DC Link Input Voltage is
under 380V
2
Slave1 Outdoor Unit Fan DC Link
Low Voltage Error
Slave1 Outdoor Unit Fan DC Link Input Voltage is
under 380V
3
Slave2 Outdoor Unit Fan DC Link
Low Voltage Error
Slave2 Outdoor Unit Fan DC Link Input Voltage is
under 380V
4
Slave3 Outdoor Unit Fan DC Link
Low Voltage Error
Slave3 Outdoor Unit Fan DC Link Input Voltage is
under 380V
1
Master Outdoor Unit Liquid pipe
Temperature Sensor Error
Liquid pipe temperature sensor of Master Outdoor
Unit is open or short
2
Slave1 Outdoor Unit Liquid pipe
Temperature Sensor Error
Liquid pipe temperature sensor of slave1 Outdoor
Unit is open or short
3
Slave2 Outdoor Unit Liquid pipe
Temperature Sensor Error
Liquid pipe temperature sensor of slave2 Outdoor
Unit is open or short
4
Slave3 Outdoor Unit Liquid pipe
Temperature Sensor Error
Liquid pipe temperature sensor of slave3 Outdoor
Unit is open or short
1 0 4
1 0 5
Outdoor unit related error
1 0 6
1 0 7
1 1 3
ENGLISH
Display
88 ELECTRICAL WIRING
ENGLISH
Display
Title
Cause of Error
Master Outdoor Unit Subcooling Inlet
1
Temperature Sensor Error
Master Outdoor Unit Subcooling Inlet Temperature
Sensor Error
2
Slave1 Outdoor Unit Subcooling Inlet
Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Inlet Temperature
Sensor Error
3
Slave2 Outdoor Unit Subcooling Inlet
Temperature Sensor Error
Slave2 Outdoor Unit Subcooling Inlet Temperature
Sensor Error
4
Slave3 Outdoor Unit Subcooling Inlet
Temperature Sensor Error
Slave3 Outdoor Unit Subcooling Inlet Temperature
Sensor Error
1
Master Outdoor Unit Subcooling Outlet Master Outdoor Unit Subcooling Outlet Temperature
Temperature Sensor Error
Sensor Error
2
Slave1 Outdoor Unit Subcooling Outlet
Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Outlet Temperature
Sensor Error
3
Slave2 Outdoor Unit Subcooling Outlet
Temperature Sensor Error
Slave2 Outdoor Unit Subcooling Outlet Temperature
Sensor Error
4
Slave3 Outdoor Unit Subcooling Outlet
Temperature Sensor Error
Slave3 Outdoor Unit Subcooling Outlet Temperature
Sensor Error
1
Master Outdoor Unit Oil Level Sensor
Error
Oil Level Sensor of Master Outdoor Unit is open or
short
2
Slave1 Outdoor Unit Oil Level Sensor
Error
Oil Level Sensor of slave1 Outdoor Unit is open or
short
3
Slave2 Outdoor Unit Oil Level Sensor
Error
Oil Level Sensor of slave2 Outdoor Unit is open or
short
4
Slave3 Outdoor Unit Oil Level Sensor
Error
Oil Level Sensor of slave3 Outdoor Unit is open or
short
1
Master outdoor unit Main Board - Exter- Master outdoor unit Main Board - External Board
nal Board communication Error
communication Error
2
Slave1 outdoor unit Main Board - Exter- Slave1 outdoor unit Main Board - External Board
nal Board communication Error
communication Error
3
Slave2 outdoor unit Main Board - Exter- Slave2 outdoor unit Main Board - External Board
nal Board communication Error
communication Error
4
Slave3 outdoor unit Main Board - Exter- Slave3 outdoor unit Main Board - External Board
nal Board communication Error
communication Error
1
Failure of operation mode conversion at Failure of operation mode conversion at Master OutMaster Outdoor Unit
door Unit
2
Failure of operation mode conversion at Failure of operation mode conversion at Slave1 OutSlave1 Outdoor Unit
door Unit
3
Failure of operation mode conversion at Failure of operation mode conversion at Slave2 OutSlave2 Outdoor Unit
door Unit
4
Failure of operation mode conversion at Failure of operation mode conversion at Slave3 OutSlave3 Outdoor Unit
door Unit
1 1 4
1 1 5
Outdoor unit related error
1 1 6
1 4 5
1 5 1
ELECTRICAL WIRING 89
Title
Master Outdoor Unit Heat Exchanger
1
Temperature Sensor (upper part) Fault
Slave1 Outdoor Unit Heat Exchanger
2
Temperature Sensor (upper part) Fault
Cause of Error
Master Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Slave1 Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
3
Slave2 Outdoor Unit Heat Exchanger
Temperature Sensor (upper part) Fault
Slave2 Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
4
Slave3 Outdoor Unit Heat Exchanger
Temperature Sensor (upper part) Fault
Slave3 Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
1
Master Outdoor Unit Heat Exchanger
Temperature Sensor (lower part) Fault
Master Outdoor Unit Heat Exchanger Temperature
Sensor(lower part) open or short
2
Slave1 Outdoor Unit Heat Exchanger
Temperature Sensor (lower part) Fault
Slave1 Outdoor Unit Heat Exchanger Temperature
Sensor (lower part) open or short
3
Slave2 Outdoor Unit Heat Exchanger
Temperature Sensor (lower part) Fault
Slave2 Outdoor Unit Heat Exchanger Temperature
Sensor(lower part) open or short
4
Slave3 Outdoor Unit Heat Exchanger
Temperature Sensor (lower part) Fault
Slave3 Outdoor Unit Heat Exchanger Temperature
Sensor(lower part) open or short
1
Master outdoor unit External Board
Main-Sub Micom communication Error
Master Outdoor Unit Main Board Main-Sub Micom
communication failed
2
Slave1 outdoor unit External Board
Main-Sub Micom communication Error
Slave1 Outdoor Unit Main Board Main-Sub Micom
communication failed
3
Slave2 outdoor unit External Board
Main-Sub Micom communication Error
Slave2 Outdoor Unit Main Board Main-Sub Micom
communication failed
4
Slave3 outdoor unit External Board
Main-Sub Micom communication Error
Slave3 Outdoor Unit Main Board Main-Sub Micom
communication failed
1
Master Outdoor Unit Fan Heatsink High System is turned off by Master Outdoor Unit Fan
Temperature
Heatsink High Temperature
2
Slave1 Outdoor Unit Fan Heatsink High
Temperature
System is turned off by Slave1 Outdoor Unit Fan
Heatsink High Temperature
3
Slave2 Outdoor Unit Fan Heatsink High
Temperature
System is turned off by Slave2 Outdoor Unit Fan
Heatsink High Temperature
4
Slave3 Outdoor Unit Fan Heatsink High
Temperature
System is turned off by Slave3 Outdoor Unit Fan
Heatsink High Temperature
1
Master Outdoor Unit Fan Heatsink
Temperature Sensor Fault
Master Outdoor Unit Fan Heatsink Temperature Sensor open or short
2
Slave1 Outdoor Unit Fan Heatsink Tem- Slave1 Outdoor Unit Fan Heatsink Temperature Senperature Sensor Fault
sor open or short
3
Slave2 Outdoor Unit Fan Heatsink Tem- Slave2 Outdoor Unit Fan Heatsink Temperature Senperature Sensor Fault
sor open or short
4
Slave3 Outdoor Unit Fan Heatsink Tem- Slave3 Outdoor Unit Fan Heatsink Temperature Senperature Sensor Fault
sor open or short
1 5 3
1 5 4
Outdoor unit related error
1 8 2
1 9 3
1 9 4
ENGLISH
Display
90 CAUTION FOR REFRIGERANT LEAK
ENGLISH
CAUTION FOR REFRIGERANT LEAK
The installer and system specialist shall secure safety against leakage according to local regulations or standards.
The following standards may be applicable if local regulations are not available.
Introduction
Though the R410A refrigerant is harmless and incombustible itself , the room to equip the air
conditioner should be large to such an extent that the refrigerant gas will not exceed the limiting
concentration even if the refrigerant gas leaks in the room.
Limiting concentration
Limiting concentration is the limit of Freon gas concentration where immediate measures can
be taken without hurting human body when refrigerant leaks in the air. The limiting concentration shall be described in the unit of kg/m3 (Freon gas weight per unit air volume) for facilitating calculation.
Limiting concentration: 0.44kg/m3(R410A)
Outdoor unit
(No.1 system)
Flow of
refrigerant
Indoor unit
Room where refrigerant leaks
(Refrigerant of the whole No.1
system flows out.)
Checking procedure of limiting concentration
Check limiting concentration along following steps and take appropriate measure depending on
the situation.
Calculate amount of all the replenished refrigerant (kg) per each refrigerant system.
Amount of replenished
refrigerant per one outdoor +
unit system
Amount of additional = Total amount of replenished
replenished refrigerant refrigerant in refrigerant
facility (kg)
Amount of replenished
refrigerant at factory shipment
Amount of additionally
replenished refrigerant
depending on piping
length or piping
diameter at customer
Note : In case one refrigerant facility is
divided into 2 or more refrigerant
systems and each system is
independent, amount of replenished
refrigerant of each system shall be
adopted.
Calculate minimum room capacity
Calculate room capacity by regarding a portion as one room or the smaller room.
- Without partition
- With partition and with opening which serve
as passage of air to adjoining room
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Opening
Partition
In the case of opening
without door , or 0.15
% or more openings
(to floor space) both
above and below door)
CAUTION FOR REFRIGERANT LEAK 91
Outdoor unit
Indoor unit
Smallest
room
Calculate refrigerant concentration
Total amount of replenished
refrigerant in refrigerant facility (kg)
Capacity of smallest room3 where
indoor unit is installed (m )
= Refrigerant concentration
(kg/m3)
(R410A)
In case the result of calculation exceeds
the limiting concentration, perform the
same calculations by shifting to the
second smallest, and the third smallest
rooms until at last the result is below the
limiting concentration.
In case the concentration exceeds the limit
When the concentration exceeds the limit, change original plan or take one of the countermeasures shown below:
• Countermeasure 1
Provide opening for ventilation.
Provide 0.15% or more opening to floor space both above and below door, or provide opening
without door.
• Countermeasure 2
Provide gas leak alarm linked with mechanical ventilator.
Reducing the outdoor refrigerant qty.
Gas leak alarm
Countermeasure 2
Mechanical ventilator
Indoor unit
Countermeasure 1 Opening effective to ventilation
Pay a special attention to the place, such as a basement, etc. where refrigerant can stay,
since refrigerant is heavier than air.
ENGLISH
- With partition and without opening which serve as passage of air to adjoining room
92 INSTALLATION GUIDE AT THE SEASIDE
ENGLISH
INSTALLATION GUIDE AT THE SEASIDE
! CAUTION
• Air conditioners should not be installed
in areas where corrosive gases, such as
acid or alkaline gas, are produced.
• Do not install the product where it could
be exposed to sea wind (salty wind)
directly. It can result corrosion on the
product. Corrosion, particularly on the
condenser and evaporator fins, could
cause product malfunction or inefficient
performance.
• If outdoor unit is installed close to the
seaside, it should avoid direct exposure
to the sea wind. Otherwise it needs
additional anticorrosion treatment on the
heat exchanger.
Selecting the location(Outdoor Unit)
If the outdoor unit is to be installed close to
the seaside, direct exposure to the sea wind
should be avoided. Install the outdoor unit on
the opposite side of the sea wind direction.
Sea wind
Sea wind
In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to
the sea wind.
Windbreak
Sea wind
- It should be strong enough like concrete to
prevent the sea wind from the sea.
- The height and width should be more than
150% of the outdoor unit.
- It should be keep more than 70 cm of space
between outdoor unit and the windbreak for
easy air flow.
Select a well-drained place.
• Periodic ( more than once/year )
cleaning of the dust or salt particles
stuck on the heat exchanger by using
water