LG ARUN100LN3 Installation manual

ENGLISH
ESPAÑOL
FRANCAIS
PORTUGUESE
INSTALLATION MANUAL
AIR CONDITIONER
• 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.
MODELS : ARUN Series
ARUV Series
P/NO : MFL67221401
www.lg.com
ARUN/ARUV Series Outdoor unit Installation Manual
TABLE OF CONTENTS
Safety Precautions ................................................................................................................3
Installation Process ..............................................................................................................7
Outdoor units Information....................................................................................................8
Environment-friendly Alternative Refrigerant R410A .....................................................14
Select the Best Location ....................................................................................................14
Installation Space................................................................................................................15
Lifting method .....................................................................................................................17
Installation ...........................................................................................................................18
Refrigerant piping installation ...........................................................................................23
Pipe connections between indoor and outdoor unit .......................................................27
Electrical Wiring ..................................................................................................................53
Test Run ...............................................................................................................................85
New Function ....................................................................................................................111
Caution For Refrigerant Leak...........................................................................................120
Installation guide at the seaside......................................................................................122
2
Outdoor Unit
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
n Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
n 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.
Always ground the product.
• There is risk of 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.
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 intstall a dedicated circuit and breaker.
• Improper wiring or installation may cause fire or
electric shock.
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.
Installation Manual 3
ENGLISH
Safety Precautions
Safety Precautions
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.
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.
n 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.
n Installation
Always check for gas (refrigerant) leakage
after installation or repair of product.
• Low refrigerant levels may cause failure of product.
4
Outdoor Unit
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.
Safety Precautions
Keep level even when installing the product.
Use power cables of sufficient current
carrying capacity and rating.
• Cables that are too small may leak, generate
heat, and cause a fire.
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.
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.
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.
n 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.
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.
Do not block the inlet or outlet.
• It may cause failure of appliance or accident.
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.
Installation Manual 5
ENGLISH
• 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.
Safety Precautions
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.
Safely dispose of the packing materials.
Turn on the power at least 6 hours before
starting operation.
• 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.
• 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.
Use a firm stool or ladder when cleaning or
maintaining the air conditioner.
• Be careful and avoid personal injury.
6
Outdoor Unit
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.
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.
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)
ENGLISH
Installation Process
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)
Airtight test
In the final check for 24hours at 3.8 MPa(38.7 kgf/cm2) there must be no drop in pressure.
Vacuum drying
The vacuum pump used must have a capacity of reaching at least 5 torr, more than 1 hour
Additional charge of refrigerant
Recharge correctly as calculated in this manual. and record the amount of added refrigerant
Fit facing panels
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
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
• 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 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.)
Installation Manual 7
Outdoor units Information
Outdoor units Information
n Combination Ration(50~200%)
Outdoor Number
Single outdoor units
Double outdoor units
Triple outdoor units
Connection Capacity
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.
1) If the operation of indoor unit is more than 130%, the airflow is operated as low in the all
indoor units.
2) 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: Outdoor Unit (3Ø, 380 - 415V, 50Hz/3Ø, 380V, 60Hz)
n Heat pump
Unit
System(HP)
Model
Product Charge
kg
Max. Connectable No. of Indoor Units
Net Weight
kg
lbs
Dimensions (WxHxD)
mm
inch
Connecting Pipes
Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
Unit
System(HP)
Model
8
ARUN80LN3
ARUN80LN3
5.0
13(20)
190 x 1
418 x 1
(920 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1
9.52(3/8)
19.05(3/4)
1 Outdoor unit
10
ARUN100LN3
ARUN100LN3
6.4
16(25)
240 x 1
529 x 1
(920 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1
9.52(3/8)
22.2(7/8)
12
ARUN120LN3
ARUN120LN3
6.4
20(30)
240 x 1
529 x 1
(920 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1
12.7(1/2)
28.58(1 1/8)
1 Outdoor Unit
14
16
18
20
ARUN140LN3
ARUN160LN3
ARUN180LN3
ARUN200LN3
ARUN140LN3
ARUN160LN3
ARUN180LN3
ARUN200LN3
Product Charge
kg
7.0
7.0
7.5
9.0
Max. Connectable No. of Indoor Units
23(35)
26(40)
29(45)
32(44)
Net Weight
kg
260 x 1
260 x 1
315 x 1
325 x 1
lbs
573 x 1
573 x 1
694 x 1
716 x 1
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1
inch
(48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
Connecting Pipes
Liquid Pipes[mm(inch)]
12.7(1/2)
12.7(1/2)
15.88(5/8)
15.88(5/8)
Gas Pipes[mm(inch)]
28.58(1 1/8)
28.58(1 1/8)
28.58(1 1/8)
28.58(1 1/8)
8
Outdoor Unit
Outdoor Units Information
2 Outdoor Unit
Product Charge
kg
Max. Connectable No. of Indoor Units
Net Weight
kg
lbs
Dimensions (WxHxD)
mm
22
ARUN220LN3
ARUN120LN3
ARUN100LN3
12.8
35(44)
240 x 2
529 x 2
24
ARUN240LN3
ARUN120LN3
ARUN120LN3
12.8
39(48)
240 x 2
529 x 2
(920 x 1,680 x 760) x 2
(920 x 1,680 x 760) x 2
inch
(36.2 x 66.1 x 29.9) x 2
(36.2 x 66.1 x 29.9) x 2
Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
15.88(5/8)
28.58(1 1/8)
15.88(5/8)
34.9(1 3/8)
Connecting Pipes
Unit
System(HP)
Model
30
ARUN300LN3
ARUN160LN3
ARUN140LN3
Product Charge
kg
14.0
Max. Connectable No. of Indoor Units
49(60)
Net Weight
kg
260 × 2
lbs
573 × 2
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 2
inch
(48.8 x 66.1 x 29.9) x 2
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
Gas Pipes[mm(inch)]
34.9(1 3/8)
Unit
System(HP)
Model
26
ARUN260LN3
ARUN140LN3
ARUN120LN3
13.4
42(52)
240 × 1 + 260 × 1
529 × 1 + 573 × 1
(920 x 1,680 x 760) x 1
(1,240 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1
19.05(3/4)
34.9(1 3/8)
2 Outdoor Unit
32
34
ARUN320LN3
ARUN340LN3
ARUN160LN3
ARUN180LN3
ARUN160LN3
ARUN160LN3
14.0
14.5
52(64)
55(64)
260 × 2
260 × 1 + 315 × 1
573 × 2
573 × 1 + 694 × 1
(1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2
(48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2
19.05(3/4)
19.05(3/4)
34.9(1 3/8)
34.9(1 3/8)
28
ARUN280LN3
ARUN160LN3
ARUN120LN3
13.4
45(56)
240 × 1 + 260 × 1
529 × 1 + 573 × 1
(920 × 1,680 × 760) × 1)
(1,240 × 1,680 × 760) × 1
(36.2 × 66.1 × 29.9) × 1
(48.8 × 66.1 × 29.9) × 1
19.05(3/4)
34.9(1 3/8)
36
ARUN360LN3
ARUN200LN3
ARUN160LN3
16.0
58(64)
260 × 1 + 325 × 1
573 × 1 + 716 × 1
(1,240 x 1,680 x 760) x 2
(48.8 x 66.1 x 29.9) x 2
19.05(3/4)
41.3(1 5/8)
2 Outdoor Unit
38
40
ARUN380LN3
ARUN400LN3
ARUN200LN3
ARUN200LN3
ARUN180LN3
ARUN200LN3
3 Outdoor Unit
42
44
ARUN420LN3
ARUN440LN3
ARUN160LN3
ARUN160LN3
ARUN140LN3
ARUN160LN3
ARUN120LN3
ARUN120LN3
Product Charge
kg
16.5
18.0
20.4
20.4
Max. Connectable No. of Indoor Units
61(64)
64
64
64
Net Weight
kg
315 × 1 + 325 × 1
325 × 2
240 × 1 + 260 × 2
240 × 1 + 260 × 2
lbs
694 × 1 + 716 × 1
716 × 2
529 × 1 + 573 × 2
529 × 1 + 573 × 2
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2 (920 × 1,680 × 760) × 1 (920 × 1,680 × 760) × 1
(1,240 × 1,680 × 760) × 2 (1,240 × 1,680 × 760) × 2
inch
(48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2 (36.2 × 66.1 × 29.9) × 1 (36.2 × 66.1 × 29.9) × 1
(48.8 × 66.1 × 29.9) × 2 (48.8 × 66.1 × 29.9) × 2
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
19.05(3/4)
19.05(3/4)
19.05(3/4)
Gas Pipes[mm(inch)]
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
Unit
System(HP)
Model
3 Outdoor Unit
46
48
50
52
ARUN460LN3
ARUN480LN3
ARUN500LN3
ARUN520LN3
ARUN160LN3
ARUN160LN3
ARUN180LN3
ARUN200LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
ARUN140LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
Product Charge
kg
21.0
21.0
21.5
23.0
Max. Connectable No. of Indoor Units
64
64
64
64
Net Weight
kg
260 × 3
260 × 3
260 × 2 + 315 × 1
260 × 2 + 325 × 1
lbs
573 × 3
573 × 3
573 × 2 + 694 × 1
573 × 2 + 716 × 1
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3
inch
(48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
19.05(3/4)
19.05(3/4)
19.05(3/4)
Gas Pipes[mm(inch)]
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
Installation Manual 9
ENGLISH
Unit
System(HP)
Model
Outdoor Units Information
Unit
System(HP)
Model
54
ARUN540LN3
ARUN200LN3
ARUN200LN3
ARUN140LN3
Product Charge
kg
25.0
Max. Connectable No. of Indoor Units
64
Net Weight
kg
260 × 1 + 325 × 2
lbs
573 × 1 + 716 × 2
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 3
inch
(48.8 x 66.1 x 29.9) x 3
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
Gas Pipes[mm(inch)]
41.3(1 5/8)
3 Outdoor Unit
56
58
ARUN560LN3
ARUN580LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN160LN3
ARUN180LN3
25.0
25.5
64
64
260 × 1 + 325 × 2
315 × 1 + 325 × 2
573 × 1 + 716 × 2
694 × 1 + 716 × 2
(1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3
(48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3
19.05(3/4)
19.05(3/4)
41.3(1 5/8)
41.3(1 5/8)
60
ARUN600LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
27.0
64
325× 3
716× 3
(1,240 x 1,680 x 760) x 3
(48.8 x 66.1 x 29.9) x 3
19.05(3/4)
41.3(1 5/8)
Unit
System(HP)
Model
4 Outdoor Unit
62
64
66
68
ARUN620LN3
ARUN640LN3
ARUN660LN3
ARUN680LN3
ARUN160LN3
ARUN160LN3
ARUN180LN3
ARUN180LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
ARUN180LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
ARUN140LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
Product Charge
kg
28.0
28.0
28.5
29.0
Max. Connectable No. of Indoor Units
64
64
64
64
Net Weight
kg
260 × 4
260 × 4
260 × 3 + 315 × 1
260×2 + 315×2
lbs
573 × 4
573 × 4
573 × 3 + 694 × 1
573×2 + 694×2
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4
inch
(48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4
Connecting Pipes
Liquid Pipes[mm(inch)]
22.2(7/8)
22.2(7/8)
22.2(7/8)
22.2(7/8)
Gas Pipes[mm(inch)]
44.5(1 3/4)
44.5(1 3/4)
53.98(2)
53.98(2)
Unit
System(HP)
Model
4 Outdoor Unit
70
72
74
76
ARUN700LN3
ARUN720LN3
ARUN740LN3
ARUN760LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN180LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN160LN3
ARUN160LN3
ARUN180LN3
ARUN200LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
ARUN160LN3
Product Charge
kg
30.5
32.0
32.5
34.0
Max. Connectable No. of Indoor Units
64
64
64
64
Net Weight
kg
260 × 2 + 315 × 1 + 325 × 1
260 × 2 + 325 × 2
260×1 + 315×1 + 325×2
260 × 1 + 325 × 3
lbs
573 × 2 + 694 × 1 + 716 × 1
573 × 2 + 716 × 2
573×1 + 694×1 + 716×2
573 × 1 + 716 × 3
Dimensions (WxHxD)
mm
(1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4 (1,240 x 1,680 x 760) x 4
inch
(48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4 (48.8 x 66.1 x 29.9) x 4
Connecting Pipes
Liquid Pipes[mm(inch)]
22.2(7/8)
22.2(7/8)
22.2(7/8)
22.2(7/8)
Gas Pipes[mm(inch)]
53.98(2)
53.98(2)
53.98(2)
53.98(2)
Unit
System(HP)
Model
4 Outdoor Unit
Product Charge
kg
Max. Connectable No. of Indoor Units
Net Weight
kg
lbs
Dimensions (WxHxD)
mm
inch
Connecting Pipes
Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
10
Outdoor Unit
78
ARUN780LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN180LN3
34.5
64
315 × 1 + 325 × 3
694 × 1 + 716 × 3
(1,240 x 1,680 x 760) x 4
(48.8 x 66.1 x 29.9) x 4
22.2(7/8)
53.98(2)
80
ARUN800LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
ARUN200LN3
36.0
64
325 × 4
716 × 4
(1,240 x 1,680 x 760) x 4
(48.8 x 66.1 x 29.9) x 4
22.2(7/8)
53.98(2)
Outdoor Units Information
n Cooling Only
6
ARUV60LT3
ARUV60LT3
Product Charge
kg
4.0
Max. Connectable No. of Indoor Units
10(12)
Net Weight
kg
155 x 1
lbs
341 x 1
Dimensions (WxHxD)
mm
(620 x 1,680 x 760) x 1
inch
(24.4 x 66.1 x 29.9) x 1
Connecting Pipes
Liquid Pipes[mm(inch)]
9.52(3/8)
Gas Pipes[mm(inch)]
19.05(3/4)
1 Outdoor unit
8
10
ARUV80LT3
ARUV100LT3
ARUV80LT3
ARUV100LT3
4.0
6.4
13(20)
16(25)
155 x 1
185 x 1
341 x 1
408 x 1
(620 x 1,680 x 760) x 1
(920 x 1,680 x 760) x 1
(24.4 x 66.1 x 29.9) x 1
(36.2 x 66.1 x 29.9) x 1
9.52(3/8)
9.52(3/8)
19.05(3/4)
22.2(7/8)
12
ARUV120LT3
ARUV120LT3
6.4
20(30)
235 x 1
518 x 1
(920 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1
12.7(1/2)
28.58(1 1/8)
Unit
System(HP)
Model
1 Outdoor Unit
14
16
18
20
ARUV140LT3
ARUV160LT3
ARUV180LT3
ARUV200LT3
ARUV140LT3
ARUV160LT3
ARUV180LT3
ARUV200LT3
Product Charge
kg
6.4
7.0
7.5
9.0
Max. Connectable No. of Indoor Units
23(35)
26(40)
29(45)
32(44)
Net Weight
kg
235 x 1
255 × 1
310 × 1
310 × 1
lbs
518 x 1
562 × 1
683 × 1
683 × 1
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1
inch
(36.2 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 1
Connecting Pipes
Liquid Pipes[mm(inch)]
12.7(1/2)
12.7(1/2)
15.88(5/8)
15.88(5/8)
Gas Pipes[mm(inch)]
28.58(1 1/8)
28.58(1 1/8)
28.58(1 1/8)
28.58(1 1/8)
Unit
System(HP)
Model
22
ARUV220LT3
ARUV120LT3
ARUV100LT3
Product Charge
kg
12.8
Max. Connectable No. of Indoor Units
35(44)
Net Weight
kg
185 x 1 + 235 x 1
lbs
408 x 1 + 518 x 1
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 2
inch
(36.2 x 66.1 x 29.9) x 2
Connecting Pipes
Liquid Pipes[mm(inch)]
15.88(5/8)
Gas Pipes[mm(inch)]
28.58(1 1/8)
Unit
System(HP)
Model
30
ARUV300LT3
ARUV160LT3
ARUV140LT3
Product Charge
kg
13.4
Max. Connectable No. of Indoor Units
49(60)
Net Weight
kg
235 × 1 + 255 × 1
lbs
518 × 1 + 562 × 1
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 1
(1,240 x 1,680 x 760) x 1
inch
(36.2 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
Gas Pipes[mm(inch)]
34.9(1 3/8)
2 Outdoor Unit
24
26
ARUV240LT3
ARUV260LT3
ARUV140LT3
ARUV140LT3
ARUV100LT3
ARUV120LT3
12.8
12.8
39(48)
42(52)
185 x 1 + 235 x 1
235 x 2
408 x 1 + 518 x 1
518 x 2
(920 x 1,680 x 760) x 2 (920 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2 (36.2 x 66.1 x 29.9) x 2
15.88(5/8)
19.05(3/4)
34.9(1 3/8)
34.9(1 3/8)
28
ARUV280LT3
ARUV140LT3
ARUV140LT3
12.8
45(56)
235 x 2
518 x 2
(920 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2
19.05(3/4)
34.9(1 3/8)
2 Outdoor Unit
32
34
36
ARUV320LT3
ARUV340LT3
ARUV360LT3
ARUV180LT3
ARUV200LT3
ARUV200LT3
ARUV140LT3
ARUV140LT3
ARUV160LT3
13.9
15.4
16.0
52(64)
55(64)
58(64)
235 × 1 + 310 × 1
235 × 1 + 310 × 1
255 × 1 + 310 × 1
518 × 1 + 683 × 1
518 × 1 + 683 × 1
562 × 1 + 683 × 1
(920 x 1,680 x 760) x 1
(920 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 2
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 1
(36.2 x 66.1 x 29.9) x 1
(36.2 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 2
(48.8 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1
19.05(3/4)
19.05(3/4)
19.05(3/4)
34.9(1 3/8)
34.9(1 3/8)
41.3(1 5/8)
Installation Manual 11
ENGLISH
Unit
System(HP)
Model
Outdoor Units Information
Unit
System(HP)
Model
2 Outdoor Unit
38
40
ARUV380LT3
ARUV400LT3
ARUV200LT3
ARUV200LT3
ARUV180LT3
ARUV200LT3
3 Outdoor Unit
42
44
ARUV420LT3
ARUV440LT3
ARUV140LT3
ARUV160LT3
ARUV140LT3
ARUV140LT3
ARUV140LT3
ARUV140LT3
Product Charge
kg
16.5
18.0
19.2
19.8
Max. Connectable No. of Indoor Units
61(64)
64
64
64
Net Weight
kg
310 × 2
310 × 2
235 × 3
235 × 2 + 255 × 1
lbs
683 × 2
683 × 2
518 × 3
518 × 2 + 562 × 1
Dimensions (WxHxD)
mm
(1,240 × 1,680 × 760) × 2 (1,240 × 1,680 × 760) × 2 (1,240 × 1,680 × 760) × 3 (920 × 1,680 × 760) × 2
(1,240 × 1,680 × 760) × 1
inch
(36.2 × 66.1 × 29.9) × 2
(48.8 × 66.1 × 29.9) × 2 (48.8 × 66.1 × 29.9) × 2 (48.8 × 66.1 × 29.9) × 3
(48.8 × 66.1 × 29.9) × 1
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
19.05(3/4)
19.05(3/4)
19.05(3/4)
Gas Pipes[mm(inch)]
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
Unit
System(HP)
Model
46
ARUV460LT3
ARUV180LT3
ARUV140LT3
ARUV140LT3
Product Charge
kg
20.3
Max. Connectable No. of Indoor Units
64
Net Weight
kg
235 × 2 + 310 × 1
lbs
518 × 2 + 683 × 1
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 2
(1,240 x 1,680 x 760) x 1
inch
(36.2 x 66.1 x 29.9) x 2
(48.8 x 66.1 x 29.9) x 1
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
Gas Pipes[mm(inch)]
41.3(1 5/8)
Unit
System(HP)
Model
3 Outdoor Unit
48
50
52
ARUV480LT3
ARUV500LT3
ARUV520LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV140LT3
ARUV160LT3
ARUV180LT3
ARUV140LT3
ARUV140LT3
ARUV140LT3
21.8
22.4
22.9
64
64
64
235 × 2 + 310 × 1 235 × 1 + 255 × 1 + 310 × 1 235 × 1 + 310 × 2
518 × 2 + 683 × 1 518 × 1 + 562 × 1 + 683 × 1 518 × 1 + 683 × 2
(920 x 1,680 x 760) x 2
(920 x 1,680 x 760) x 1 (920 x 1,680 x 760) x 1
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 2 (1,240 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2
(36.2 x 66.1 x 29.9) x 1 (36.2 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 2 (48.8 x 66.1 x 29.9) x 2
19.05(3/4)
19.05(3/4)
19.05(3/4)
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
3 Outdoor Unit
54
56
58
60
ARUV540LT3
ARUV560LT3
ARUV580LT3
ARUV600LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV140LT3
ARUV160LT3
ARUV180LT3
ARUV200LT3
Product Charge
kg
24.4
25.0
25.5
27.0
Max. Connectable No. of Indoor Units
64
64
64
64
Net Weight
kg
235 × 1 + 310 × 2
255 × 1 + 310 × 2
310 × 3
310 × 3
lbs
518 × 1 + 683 × 2
562 × 1 + 683 × 2
683 × 3
683 × 3
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3
(1,240 x 1,680 x 760) x 2
inch
(36.2 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 3
(48.8 x 66.1 x 29.9) x 3 (48.8 x 66.1 x 29.9) x 3
(48.8 x 66.1 x 29.9) x 2
Connecting Pipes
Liquid Pipes[mm(inch)]
19.05(3/4)
19.05(3/4)
19.05(3/4)
19.05(3/4)
Gas Pipes[mm(inch)]
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
41.3(1 5/8)
12
Outdoor Unit
Outdoor Units Information
Unit
System(HP)
Model
4 Outdoor Unit
Unit
System(HP)
Model
70
ARUV700LT3
ARUV200LT3
ARUV200LT3
ARUV160LT3
ARUV140LT3
Product Charge
kg
31.4
Max. Connectable No. of Indoor Units
64
Net Weight
kg
235 × 1 + 255 × 1 + 310 × 2
lbs
518 × 1 + 562 × 1 + 683 × 2
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 1
(1,240 x 1,680 x 760) x 3
inch
(36.2 x 66.1 x 29.9) x 1
(48.8 x 66.1 x 29.9) x 3
Connecting Pipes
Liquid Pipes[mm(inch)]
22.2(7/8)
Gas Pipes[mm(inch)]
53.98(2)
Unit
System(HP)
Model
Product Charge
kg
Max. Connectable No. of Indoor Units
Net Weight
kg
lbs
Dimensions (WxHxD)
mm
inch
Connecting Pipes
Liquid Pipes[mm(inch)]
Gas Pipes[mm(inch)]
66
ARUV660LT3
ARUV200LT3
ARUV180LT3
ARUV140LT3
ARUV140LT3
29.3
64
235 × 2 + 310 × 2
518 × 2 + 683 × 2
(920 x 1,680 x 760) x 2
(1,240 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2
(48.8 x 66.1 x 29.9) x 2
22.2(7/8)
53.98(2)
68
ARUV680LT3
ARUV200LT3
ARUV200LT3
ARUV140LT3
ARUV140LT3
30.8
64
235 × 2 + 310 × 2
518 × 2 + 683 × 2
(920 x 1,680 x 760) x 2
(1,240 x 1,680 x 760) x 2
(36.2 x 66.1 x 29.9) x 2
(48.8 x 66.1 x 29.9) x 2
22.2(7/8)
53.98(2)
4 Outdoor Unit
72
74
76
ARUV720LT3
ARUV740LT3
ARUV760LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV180LT3
ARUV200LT3
ARUV200LT3
ARUV140LT3
ARUV140LT3
ARUV160LT3
31.9
33.4
34.0
64
64
64
235 × 1 + 310 × 3
235 × 1 + 310 × 3
255 × 1 + 310 × 3
518 × 1 + 683 × 3
518 × 1 + 683 × 3
562 × 1 + 683 × 3
(920 x 1,680 x 760) x 1
(920 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 4
(1,240 x 1,680 x 760) x 3 (1,240 x 1,680 x 760) x 3
(36.2 x 66.1 x 29.9) x 1
(36.2 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 4
(48.8 x 66.1 x 29.9) x 3
(48.8 x 66.1 x 29.9) x 3
22.2(7/8)
22.2(7/8)
22.2(7/8)
53.98(2)
53.98(2)
53.98(2)
4 Outdoor Unit
78
ARUV780LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV180LT3
34.5
64
310 × 4
683 × 4
(1,240 x 1,680 x 760) x 4
(48.8 x 66.1 x 29.9) x 4
22.2(7/8)
53.98(2)
80
ARUV800LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
ARUV200LT3
36.0
64
310 × 4
683 × 4
(1,240 x 1,680 x 760) x 4
(48.8 x 66.1 x 29.9) x 4
22.2(7/8)
53.98(2)
Installation Manual 13
ENGLISH
62
64
ARUV620LT3
ARUV640LT3
ARUV200LT3
ARUV200LT3
ARUV140LT3
ARUV160LT3
ARUV140LT3
ARUV140LT3
ARUV140LT3
ARUV140LT3
Product Charge
kg
28.2
28.8
Max. Connectable No. of Indoor Units
64
64
Net Weight
kg
235 × 2 + 255 × 1 + 310 × 1
235 × 3 + 310 × 1
lbs
518 × 3 + 683 × 1
518 × 2 + 562 × 1 + 683 × 1
Dimensions (WxHxD)
mm
(920 x 1,680 x 760) x 3 (920 x 1,680 x 760) x 2
(1,240 x 1,680 x 760) x 1 (1,240 x 1,680 x 760) x 2
inch
(36.2 x 66.1 x 29.9) x 3 (36.2 x 66.1 x 29.9) x 2
(48.8 x 66.1 x 29.9) x 1 (48.8 x 66.1 x 29.9) x 2
Connecting Pipes
Liquid Pipes[mm(inch)]
22.2(7/8)
22.2(7/8)
Gas Pipes[mm(inch)]
44.5(1 3/4)
44.5(1 3/4)
Environment-friendly Alternative Refrigerant R410A
Environment-friendly Alternative Refrigerant R410A
• 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.
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.
1. 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.)
14
Outdoor Unit
Installation Space
Individual Installation
n During the installation of the unit, consider service, inlet, and outlet and acquire the minimum space
as shown in the figures below.
Case 1
(10mm≤Side Space≤49mm)
Case 2
(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
E≥500
A≥10
B≥300
C≥10
D≥300
E≥20
F≥500
A≥50
B≥100
C≥50
D≥100
E≥100
E≥500
Category
Installation Space
*
)
,
Front
*
)
-
+
Front
,
*
4 sides are
walls
)
-
.
,
+
Front
Front
Front
Front
*
)
-
.
+
Front
Front
,
*
)
No limit to the height of the wall
Only 2 sides
are walls
A≥10
B≥300
Front
*
)
-
-
No limit to the
height of the wall
A≥200
B≥300
E≥400
Front
P
P
)
Limitations on
the height of
the wall
(Refer to 4
side walls)
*
• 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 inlet side by 1/2 of h1.
- Additional Space on the front side by 1/2 of h2
- h2 = A(Actual height) - 1500
- h1 = B(Actual height) - 500
Installation Manual 15
ENGLISH
Installation Space
Installation Space
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.
1. 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)
2. Don't install the suction hole and discharge hole of the Outdoor Unit facing the seasonal wind.
16
Outdoor Unit
Lifting Method
• 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
Weight per Capacity
Chassis
UX1
UX2
UX3
Capacity(HP)
Heat Pump Cooling Only
6
8
8
10
10
12
12
14
14
16
16
18
18
20
20
Weight(kg)
Heat Pump Cooling Only
155
155
190
240
185
240
235
235
260
260
255
315
310
325
310
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.
Installation Manual 17
ENGLISH
Lifting method
Installation
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°Øs legs before being fixed.
• The outdoor unit supports should have minimum height of 200mm.
• Anchor bolts must be inserted at least 75mm.
For outdoor units of 23kW or
above should not be supported
only by the corner supports.
Outdoor units of 14.5, 16kW
can be supported only by the
corner supports.
mm
100
ast
At le
Needed for outdoor units of 23kW or above
mm
100
mm
ast
100
At le
ast
At le
Center of the Unit
mm
100
ast
At le
Needed for outdoor units of 23kW or above
mm
100
mm
ast
100
ast
At le
le
t
A
Center of the Unit
The location of the Anchor bolts
Chassis
UX1
UX2
UX3
18
Outdoor Unit Capacity
H/P
C/O
6~8HP
8~12HP
10~14HP
14~20HP
16~20HP
Outdoor Unit
760
730
At least 65
At least 65
65
65
Unit : mm
A(mm)
B(mm)
620
920
1240
497
792
1102
Installation
• 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.
WARNING
• 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
Installation Manual 19
ENGLISH
Foundation for Installation
Installation
Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1) Cut the pipes and the cable.
n Use the accessory piping kit or the pipes purchased
locally.
n Measure the distance between the indoor and the
outdoor unit.
n Cut the pipes a little longer than measured distance.
n Cut the cable 1.5m longer than the pipe length.
Copper
tube
90°
Slanted Uneven Rough
Pipe
Reamer
2) Burrs removal
n Completely remove all burrs from the cut cross section
of pipe/tube.
n 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.
Point down
3) Flaring work
n Carry out flaring work using flaring tool as shown
below. unit
Pipe
"A"
Indoor
[kW(Btu/h]
Gas
Liquid
Gas
Liquid
<5.6(19,100)
1/2"
1/4"
0.5~0.8 0~0.5
<16.0(54,600) 5/8"
3/8"
0.8~1.0 0.5~0.8
<22.4(76,400) 3/4"
3/8"
1.0~1.3 0.5~0.8
Handle
Bar
Bar
"A"
Yoke
Cone
Copper pipe
Clamp handle
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
Red arrow mark
4) Check
n Compare the flared work with figure below.
n 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
20
Outdoor Unit
Inclined Surface Cracked Uneven
damaged
thickness
Installation
FLARE SHAPE and FLARE NUT TIGHTENING TORQUE
pipe size
tightening torque(Ncm)
A(mm)
Ø9.5
3270-3990
12.8-13.2
Ø12.7
4950-6030
16.2-16.6
Ø15.9
6180-7540
19.3-19.7
flare shape
90° ±2
45
A
°
±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.
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
Tightening torque N-m(Turn clockwise to close)
Cap(Valve lid) Service port
Flare nut
14-17
13.5-16.5
Hexagonal
33-39
wrench 4mm
50-60
18-22
11.5-13.9
Hexagonal
23-27
62-75
wrench 6mm
Shaft(valve body)
Ø6.4
Ø9.5
Ø12.7
8.1-9.9
Ø15.9
13.5-16.5
Ø22.2
Ø25.4
27-33
5.4-6.6
Hexagonal
wrench 10mm
36-44
-
Gas line piping attached to unit
-
22-28
Installation Manual 21
ENGLISH
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.
Installation
HEAT INSULATION
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
Indoor unit
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.
22
Outdoor Unit
Fastening band
(accessory)
Refrigerant piping
Thermal insulator
(accessory)
Refrigerant piping installation
ENGLISH
Refrigerant piping installation
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.
Gas pipe
Liquid pipe
Common pipe
• Use hexagonal wrench to open/close the valve.
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 the cables.)
High Low Pressure Common Pipe Connections
1. For High Low Pressure Common Pipe, use provided elbows to
connect between the outdoor units using pipes.
2. During the cutting of the pipes, remove burr, foreign substances
before connecting. Otherwise, the unit may not operate because
of the sludge inside the pipe.
3. Apply Nitrogen Gas of pressure until 3.8MPa(38.7kgf/cm2) for
work area leakage test.
Installing 2 units
4. After the degree of a vacuum reaches 5 torr, continue the
vacuuming work for more than 1 hour.
5. Open the side pole with hexagonal wrench.
Installing 3 units
Installing 4 units
h When connecting to high low pressure
common pipe, connect pipes using
connecting elbows.
Detach knock outs according
the usages.
Detach
knock outs
according
the usages.
Installing on the front side
Installing on the side(Limited to high
low pressure common pipe)
Installation Manual 23
Refrigerant piping installation
Connection of Outdoor units
2 outdoor units
[Unit : mm]
Outdoor units
Model
Gas pipe
Liquid pipe
331
314
416
408
C
2 Unit
C
ARCNN21
I.D.31.8
I.D.15.88
I.D.28.58
I.D.28.58
111
I.D.22.2
I.D.34.9
I.D.15.88
I.D.12.7
I.D.19.05
I.D.22.2
I.D.41.3 I.D.38.1 O.D.34.9
I.D.9.52
83
O.D.19.05
I.D.12.7
I.D.28.58
I.D.15.88
70
130
C
341
298
3 Unit
ARCNN31
334
281
I.D.41.3
I.D.34.9
I.D.41.3
111
I.D.22.2
83
I.D.19.05
I.D.19.05
O.D.34.9
C
I.D.15.88
I.D.28.58
I.D.12.7
125
415
375
4 Unit
A
ARCNN41
334
281
I.D.41.3
I.D.44.48 I.D.53.98
134
I.D.22.2
I.D.19.05
I.D.19.05
C
I.D.15.88
I.D.28.58
80
For more information, refer accessory installation manual.
Facing
downwards
Y branch
B
A To outdoor unit
B To branch piping or indoor unit
Viewed from point A
in direction of arrow
Within ± 3°
24
Facing
upwards
Within +/- 10
A
Outdoor Unit
83
O.D.22.2
I.D.25.4
Within ± 3°
I.D.12.7
Refrigerant piping installation
ENGLISH
Caution
1. Use the following materials for refrigerant piping.
• Material: Seamless phosphorous deoxidized copper pipe
• Wall thickness : Comply with the relevant local and national regulations for the designed pressure
3.8MPa. We recommend the following table as the minimum wall thickness.
Outer diameter
[mm]
6.35
9.52
12.7
15.88
19.05
22.2
25.4
28.58
31.8
34.9
38.1
41.3 44.45 53.98
Minimum
thickness [mm]
0.8
0.8
0.8
0.99
0.99
0.99
0.99
0.99
1.1
1.21
1.35
1.43
1.55
2.1
2. Commercially available piping often contains dust and other materials. Always blow it clean with a dry
inert gas.
3. Use care to prevent dust, water or other contaminants from entering the piping during installation.
4. Reduce the number of bending portions as much as possible, and make bending radius as big as
possible.
5. Always use the branch piping set shown below, which are sold separately.
Header
Y branch
ARBLN01621, ARBLN03321, ARBLN07121,
ARBLN14521, ARBLN23220
4 branch
7 branch
10 branch
ARBL054
ARBL057
ARBL1010
ARBL104
ARBL107
ARBL2010
6. If the diameters of the branch piping of the designated refrigerant piping differs, use a pipe cutter to cut
the connecting section and then use an adapter for connecting different diameters to connect the piping.
7. Always observe the restrictions on the refrigerant piping (such as rated length, difference in height, and
piping diameter).
Failure to do so can result in equipment failure or a decline in heating/cooling performance.
8. A second branch cannot be made after a header. (These are shown by
A
.)
A
B
A To Outdoor Unit
B Sealed Piping
9. The Multi V will stop due to an abnormality like excessive or insufficient refrigerant. At such a time,
always properly charge the unit. When servicing, always check the notes concerning both the piping
length and the amount of additional refrigerant.
10. Never perform a pump down. This will not only damage the compressor but also deteriorate the
performance.
11. Never use refrigerant to perform an air purge. Always evacuate air by using a vacuum pump.
Installation Manual 25
Refrigerant piping installation
12. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling
performance, drip of condensate and other such problems.
13. When connecting the refrigerant piping, make sure the service valves of the Outdoor Unit is completely
closed (the factory setting) and do not operate it until the refrigerant piping for the Outdoor and Indoor
Units has been connected, a refrigerant leakage test has been performed and the evacuation process
has been completed.
14. Always use a non-oxidizing brazing material for brazing the parts and do not use flux. If not, oxidized
film can cause clogging or damage to the compressor unit and flux can harm the copper piping or
refrigerant oil.
WARNING
When installing and moving the air conditioner to another site, be sure to make recharge refrigerant
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.
- After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after
branching, use an appropriate branch pipe set according to the pipe diameter of the indoor unit and the
installation pipe drawing.
26
Outdoor Unit
Pipe connections between indoor and outdoor unit
Regulator
Refrigerant Pipe
Right Side Pipe Draw Out
Nitrogen
Direction
Taping
Valve
Left Side Pipe Draw Out
Nitrogen
Front Side Pipe Draw Out
Preparation Work
• Use Knock Outs of Base Pan of the outdoor unit for Left/Right or Bottom pipe drawing outs.
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.
Removal Area for common
pipe bottom side connections.
Removal Area for Liquid/Gas pipe
bottom side connections.
CAUTION
• Remove the brackets on the inverter condenser legs that were fixed to protect the unit during the transportation.
(If bracket is not removed, abnormal noise or vibration may occur.)
Nut
Washer
1. Open the front panel.
2. Remove Brackets
3. Fix with only nut and washer as shown in the
figure.
Brackets for Transportation
Installation Manual 27
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 environments.
• 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.
Pipe connections between indoor and outdoor unit
n Remove leakage prevention cap
Service Port
• Remove the leakage prevention cap attached to the
outdoor unit service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
1. Verify whether the liquid/gas/common pipes are
locked.
2. Extract remaining refrigerant or air inside using the
service port.
3. Remove the leakage prevention cap
Liquid pipe
Gas pipe
Common pipe
n Method of pipe cap work during the
installation of single outdoor unit
1. Remove rubber cap inserted in the common pipe.
2. Wrap the common pipe service valve with wet towel.
3. Insert the pipe cap provided into the common pipe.
4. Place high/low pressure flare nut cap under the pipe cap so
that the pipe cap does not move.
5. Weld the pipe cap.
h If not wrapped with a wet towel, there may be damages
inside the valve.
h If the unit is operated without pipe cap work, there may be
abnormality in the cycle caused by refrigerant leakage.
Leakage Prevention Cap
Pipe Cap
Flare Nut
Pipe Drawing Out during Single / Series connection
n 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.
Common pipe Liquid pipe
Pipe Knock Out for
Liquid/Gas pipes
Pipe Knock Out for
common pipes
28
Outdoor Unit
Gas pipe
Pipe connections between indoor and outdoor unit
n Method of drawing out pipes on the bottom side
Common pipe
ENGLISH
① Drawing out common pipe through side panel
Liquid pipe Gas pipe
Remove only liquid/gas pipe Knock Out
Remove Base Pan
② Drawing out common pipe through bottom pipe
Common pipe
Liquid pipe Gas pipe
Remove Base Pan
n Figure of Sides when drawing out through bottom pipe
Remove Pipe
Knock Out Hole
i) Single outdoor unit
ii) Series outdoor units
(Draw out common pipes
through bottom)
iii) Series outdoor units
(Draw out common pipes
through side panel)
Installation Manual 29
Pipe connections between indoor and outdoor unit
Refrigerant piping system
u 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)
2 Outdoor Units
Slave
Master Slave
Example : 5 Indoor Units connected
10m or
less
Master
Slave
Master
ODU Capacity
Master Slave
L150m (200 m : Conditional application)
H 110m
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN21
l 40m (90 m : Conditional application)
l 40m (90 m : Conditional application)
Piping length from outdoor branch to outdoor unit ≤10m, equivalent length:max 13m
(for 22HP or more)
Additional Application
To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
1) 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.
2) 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
3) Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40 m
4) [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
30
Outdoor Unit
Pipe connections between indoor and outdoor unit
Slave2
Slave1
Example : 5 Indoor Units
connected
Master
10m or
less
H 110m
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN31
ENGLISH
3 Outdoor Units
ODU Capacity
Master ≥ Slave1 ≥ Slave 2
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN21
4 Outdoor Units
Slave3
Slave2
Slave1
Master
Example : 5 Indoor Units
connected
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN31
10m or
less
G
ODU Capacity
Master ≥ Slave1 ≥ Slave 2 ≥ Slave 3
L150m (200 m : Conditional application)
H 110m
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN41
l 40m (90 m : Conditional application)
Ⓖ : Connection branch pipe
between Outdoor units :
ARCNN21
Piping length form outdoor branch to outdoor unit ≤ 10 m, equivalent length : max. 13 m(for 22 HP or
more)
Additional Application
To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
1) 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.
2) 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
3) Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40 m
4) [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
Installation Manual 31
Pipe connections between indoor and outdoor unit
Ú Refrigerant pipe diameter from branch to branch (B,C,D)
Liquid pipe
[mm(inch)]
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)
Downward Indoor Unit total capacity
[kW(Btu/h)]
≤ 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)
Gas pipe
[mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
Ø28.58(11/8 )
Ø28.58(11/8 )
Ø34.9(13/8)
Ø34.9(13/8)
Ø41.3(15/8)
Ø44.5(13/4)
Ø53.98(2)
Ú 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(200 m**) *A+B+C+D+e ≤ 175m(225 m**)
Longest pipe length after 1st branch
B+C+D+e ≤ 40m(90 m**)
Difference in height(Outdoor Unit ÷ Indoor Unit)
H ≤ 110m
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤15m
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
If overall equivalent pipe length is more than 90m from ODU to the longest IDU,
The diameter of the main pipe (Gas and Liquid pipes) must be increased as follow.
Ú Refrigerant pipe diameter from outdoor unit to first branch. (A)
Outdoor unit
Total capacity
[kW (Btu/h)
16.0~22.4(54,600~76,400)
28.0(95,900)
33.6~44.8(172,000~152,900)
50.4~61.6(172,000~210,600)
67.2(229,400)
72.8~95.2(248,500~324,900)
100.8~168.0(344,000~573,300)
173.6~179.2(592,500~611,600)
184.8~224.0(630,700~764,400)
Standard Pipe Diameter
Liquid pipe
[mm (inch)]
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.88(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
Gas pipe
[mm (inch)]
Φ19.05(3/4)
Φ22.2(7/8)
Φ28.58(1 1/8)
Φ34.9(1 3/8)
Φ41.3(1 5/8)
Φ44.5(1 3/4)
Φ53.98(2)
h If available on site, it use this size. Otherwise it can't be increased.
32
Outdoor Unit
Conditional application
(more than 90m from ODU to IDU)
Liquid pipe
Gas pipe
[mm (inch)]
[mm (inch)]
Φ22.2(7/8)
Φ12.7(1/2)
Φ25.4(1)
Φ15.88(5/8)
Φ28.58(1 1/8)
Φ31.8(1 1/4)
Φ19.05(3/4)
Φ34.9(1 3/8)
Φ38.1(1 1/2)
Φ22.2(7/8)
Φ41.3(1 5/8)
Φ25.4(1)
Φ53.98(2)
Pipe connections between indoor and outdoor unit
u Header Method
ENGLISH
1 Outdoor Unit
Example : 6 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Indoor Units
Ⓓ : Sealed piping
H 110m
L 200m
2 Outdoor Units
Slave
Example : 6 Indoor Units connected
Slave
Slave
Master
Master
Master
10m or
less
ODU Capacity
Master ≥ Slave
L 200m
L 110m
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN21
40m
40m
Installation Manual 33
Pipe connections between indoor and outdoor unit
3 Outdoor Units
Slave2
Slave1
Example : 6 Indoor Units connected
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN21
Master
ODU Capacity
Master ≥ Slave1 ≥ Slave2
10m or
less
L 200m
H 110m
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN31
40m
Branch pipe can not be used after header
4 Outdoor Units
Slave3
Slave2
Slave1
Example : 6 Indoor Units connected
Master
ODU Capacity
Master ≥ Slave1 ≥ Slave2 ≥ Slave3
G
F
10m or
less
E
L 200m
H 110m
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealing
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN41
40m
Ⓕ : Connection branch pipe
between Outdoor units:
ARCNN31
Ⓖ : Connection branch pipe
between Outdoor units :
ARCNN21
Branch pipe can not be used after header
Ú 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 ≤15m
Difference in height (Outdoor Unit ÷ Outdoor Unit)
h1 ≤ 5m
WARNING
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)
34
Outdoor Unit
Pipe connections between indoor and outdoor unit
u Combination of Y branch/header method
ENGLISH
1 Outdoor Units
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
L 110m
Example : 5 Indoor Units connected
L 150m(200m : Conditional application)
40m(90m : Conditional application)
Branch pipe can not be used after header
2 Outdoor Units
Slave
Example : 5 Indoor Units connected
10m or
less
H 110m
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor units:
ARCNN21
Ⓕ : Header
Ⓖ : Sealed piping
Slave
Master
Slave
Master
Master
ODU Capacity
Master ≥ Slave
L 150m(200m : Conditional application)
40m(90m : Conditional application)
Branch pipe can not be used after header
Installation Manual 35
Pipe connections between indoor and outdoor unit
3 Outdoor Units
Slave2
Slave1
Example : 5 Indoor Units connected
Master
10m or
less
ODU Capacity
Master ≥ Slave1 ≥ Slave2
F
E
H 110m
Ⓐ : 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
L 150m(200m : Conditional application)
40m(90m : Conditional application)
Branch pipe can not be used after header
4 Outdoor Units
Slave3
Slave2
Example : 5 Indoor Units connected
36
Outdoor Unit
Slave1
Master
ODU Capacity
Master ≥ Slave1 ≥ Slave2 ≥ Slave3
G
F
E
10m or
less
H 110m
Ⓐ : 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
L 150m(200m : Conditional application)
40m(90m : Conditional application)
Branch pipe can not be used after header
Pipe connections between indoor and outdoor unit
Ú Refrigerant pipe diameter from branch to branch (B,C)
Liquid pipe
[mm(inch)]
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)
ENGLISH
Downward Indoor Unit total capacity
[kW(Btu/h)]
≤ 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)
Gas pipe
[mm(inch)]
Ø12.7(1/2)
Ø15.88(5/8)
Ø19.05(3/4)
Ø22.2(7/8)
Ø28.58(11/8 )
Ø28.58(11/8 )
Ø34.9(13/8)
Ø34.9(13/8)
Ø41.3(15/8)
Ø44.5(13/4)
Ø53.98(2)
Ú 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 ≤ 15m
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
• 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.
WARNING
If overall equivalent pipe length is more than 90m from ODU to the longest IDU,
The diameter of the main pipe (Gas and Liquid pipes) must be increased as follow.
Ú Refrigerant pipe diameter from outdoor unit to first branch. (A)
Outdoor unit
Total capacity
[kW (Btu/h)
16.0~22.4(54,600~76,400)
28.0(95,900)
33.6~44.8(172,000~152,900)
50.4~61.6(172,000~210,600)
67.2(229,400)
72.8~95.2(248,500~324,900)
100.8~168.0(344,000~573,300)
173.6~179.2(592,500~611,600)
184.8~224.0(630,700~764,400)
Standard Pipe Diameter
Liquid pipe
[mm (inch)]
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.88(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
Gas pipe
[mm (inch)]
Φ19.05(3/4)
Φ22.2(7/8)
Φ28.58(1 1/8)
Φ34.9(1 3/8)
Φ41.3(1 5/8)
Φ44.5(1 3/4)
Φ53.98(2)
Conditional application
(more than 90m from ODU to IDU)
Liquid pipe
Gas pipe
[mm (inch)]
[mm (inch)]
Φ22.2(7/8)
Φ12.7(1/2)
Φ25.4(1)
Φ15.88(5/8)
Φ28.58(1 1/8)
Φ31.8(1 1/4)
Φ19.05(3/4)
Φ34.9(1 3/8)
Φ38.1(1 1/2)
Φ22.2(7/8)
Φ41.3(1 5/8)
Φ25.4(1)
Φ53.98(2)
h If available on site, it use this size. Otherwise it can't be increased.
Installation Manual 37
Pipe connections between indoor and outdoor unit
u 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 70kW 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 combination(84kW) :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 (61.5 kW) outdoor unit to 120% of its system capacity (73.8 kW)
and branching 7k (2.1kW) indoor unit at the 1st branch
Main pipe diameter(22 HP outdoor unit): Ø28.58(Gas pipe) Ø15.88(Liquid pipe)
Pipe diameter between 1st and 2nd branch (71.7kW 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) and Ø15.88(Liquid pipe), Ø28.58 (Gas pipe) and
Ø15.88 (Liquid pipe) is used as the main pipe and the connection pipe between 1st and 2nd branch.
* High/Low Pressure Common Pipe: Ø19.05(22HP or more)
u Indoor Unit Connection
Ú Indoor Unit connecting pipe from branch (a,b,c,d,e,f)
≤ 5.6(19,100)
Liquid pipe
[mm(inch)]
Ø6.35(1/4)
Gas pipe
[mm(inch)]
Ø12.7(1/2)
< 16.0(54,600)
Ø9.52(3/8)
Ø15.88(5/8)
< 22.4(76,400)
Ø9.52(3/8)
Ø19.05(3/4)
Indoor Unit capacity [kW(Btu/h)]
38
Outdoor Unit
Pipe connections between indoor and outdoor unit
u Pipe Connection Method/Precautions for Series connections between Outdoor units
n Pipe connection between outdoor units
(General Case)
The maximum pipe length
after the first branching
between the outdoor units is
10m or less
n Pipes between outdoor units are
2m or less
2m or less
n 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.
n Examples of Wrong Pipe Connections
If the main pipe is higher
than the outdoor units, oil
is accumulated in the
outdoor unit.
Oil Trap
If there are differences in the height
between the outdoor units, oil is
accumulated in the lower outdoor unit.
Installation Manual 39
ENGLISH
- 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 connections between indoor and outdoor unit
• 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.
(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)
Toward indoor unit
≤ 2m
≥ 0.2m
(Example 2)
Oil Trap
Toward indoor unit
≤ 2m
≥ 2m
40
Outdoor Unit
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
≥ 0.2m
h
Toward indoor unit
Toward indoor unit
Installation Manual 41
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.
Pipe connections between indoor and outdoor unit
u The amount of Refrigerant
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
+
Total liquid pipe
:Ø22.2 mm
+
Total liquid pipe
:Ø19.05 mm
+
Total liquid pipe
:Ø15.88 mm
+
Total liquid pipe
:Ø12.7 mm
+
Total liquid pipe
:Ø9.52 mm
+
Total liquid pipe
:Ø6.35 mm
+
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
(unit : kg)
CF value of indoor unit
Capacity(Btu/h(kW)) 5k
7k
9k 12k 15k 18k 24k
Type
(1.6) (2.2) (2.8) (3.6) (4.5) (5.6) (7.1)
Ceiling Concealed Duct (Low Static)
0.17 0.17 0.17 0.17 0.37 0.37
Ceiling Concealed Duct (High Static)
0.26 0.26 0.26 0.26 0.26 0.26
Wall Mounted
0.24 0.24 0.24 0.24 0.28 0.28
1Way Ceiling Cassette
0.20 0.20 0.20
0.29 0.29
2Way Ceiling Cassette
0.16 0.16
4Way Ceiling Cassette
0.18 0.18 0.25 0.25 0.32 0.32 0.48
ARTCOOL Gallery
0.10 0.10 0.10
Floor Standing
0.17 0.17 0.17 0.17 0.37 0.37
Ceiling & Floor
0.10 0.10
Ceiling Suspended
0.35 0.35
Console
0.17 0.17 0.17 0.17
Fresh Air Intake Unit
Heat recovery ventilator(DX)
- 0.20 - 0.20 0.20
CAUTION
Use only 2-series of indoor unit. Ex) ARNU***2
42
Outdoor Unit
28k
(8.2)
0.44
0.48
-
36k 42k 48k 76k 96k
(10.6) (12.3) (14.1) (22.4) (28.0)
0.44 0.44 0.62 1.00 1.00
0.64 0.64 0.64
0.54
0.75
0.62 1.00 1.00
-
Pipe connections between indoor and outdoor unit
Total amount of refrigerant in the system
Volume of the room at which Indoor Unit of the least capacity is installed
≤ 0.44 ( kg / m3 )
p If the above equation can not be satisfied, then follow the following steps.
- Selection of air conditioning system: select one of the next
1. Installation of effective opening part
2. Reconfirmation of Outdoor Unit capacity and piping length
3. Reduction of the amount of refrigerant
4. 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 Bottling
Liquid pipe
Gas pipe
Common pipe
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
- Add exact amount of refrigerant calculated by the installation pipe diameter length and the indoor combination.
- If the refrigerant amount is not exact, it may not operate properly.
- If additionally bottled refrigerant amount is over ±10%, condenser burning or insufficient indoor unit performance may be caused.
WARNING
- Pipe to be vacuumed : gas pipe, water pipe, common pipe
- If the refrigerant amount is not exact, it may not operate properly.
- If additionally bottled refrigerant amount is over ±10%, condenser burning or insufficient indoor unit
performance may be caused.
Installation Manual 43
ENGLISH
WARNING
▶ Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following equation for human safety.
Pipe connections between indoor and outdoor unit
Distribution Method
1. Line Distribution
Slave
Master
2nd
1st
Slave
3rd main pipe distribution
Master
Slave
Master
2nd
1st
2nd
1st
3rd
3rd
1st
Main pipe
Distribution
2nd
Main pipe
Distribution
2. Vertical Distribution
Ensure that the branch pipes are attached vertically.
Slave
Master
Slave
Master
3. The others
Slave
Master
Slave
Master
Header
44
Outdoor Unit
Pipe connections between indoor and outdoor unit
ENGLISH
Branch pipe Fitting
Y branch
A To Outdoor Unit
B
B To Branch Piping or Indoor Unit
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
A
A To outdoor unit
Header
B 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
C
ⓒ Pipe cutter
• When the number of pipes to be connected is
smaller than the number of header branches,
install a cap to the unconnected branches.
Installation Manual 45
Pipe connections between indoor and outdoor unit
• 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.
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
46
Outdoor Unit
Tape
Pipe connections between indoor and outdoor unit
u Y branch pipe
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
I.D19.05
281
292
1
O.D15.88
O.D9.52
I.D12.7
70
I.D22.2
I.D19.05
I.D15.88
I.D19.05
70
I.D12.7
I.D12.7
2
1
I.D9.52
I.D9.52
I.D19.05
I.D25.4
I.D15.88
I.D12.7
390
413
ARBLN03321
O.D19.05 I.D22.2
3
O.D19.05
1
I.D22.2
I.D25.4
I.D19.05
I.D19.05
I.D28.58
I.D22.2
I.D31.8
I.D19.05
I.D15.88
I.D12.7
O.D19.05 I.D22.2
1
120
I.D15.88
I.D15.88
I.D19.05
96
I.D28.58
O.D12.7
I.D9.52
I.D6.35
O.D12.7
3
I.D9.52
2
110
120
70
I.D34.9
I.D38.1
I.D28.58
I.D41.3
I.D15.88
2
I.D34.9
I.D19.05
I.D22.2
1
I.D28.58
I.D22.2
I.D34.9
I.D38.1
471
517
ARBLN14521
3
I.D19.05 I.D15.88 O.D38.1 I.D41.3
3
110
I.D.44.48
I.D41.3
110
80
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
70
I.D9.52
O.D12.7
I.D6.35
3
I.D.25.4
I.D25.4
2
I.D12.7
O.D19.05
I.D22.2
3
I.D.44.48
I.D41.3
I.D38.1
I.D.53.98
175
I.D12.7
I.D9.52
2
I.D19.05
2
1
3
O.D15.88
O.D15.88
130
I.D22.2
90
O.D28.58
O.D15.88
ARBLN23220
I.D41.3
3
I.D12.7
96
3
416
444
I.D38.1
O.D34.9
2
I.D19.05
I.D15.88
2
I.D15.88
I.D19.05
I.D12.7
I.D22.2
3
O.D22.2
120
125
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
376
404
I.D28.58 I.D31.8
74
321
332
110
1
ARBLN07121
I.D12.7
I.D6.35
I.D9.52
I.D12.7
2
80
I.D6.35
83
3
I.D28.58 O.D25.4
70
74
I.D.6.35
I.D.9.52
74
281
292
3
O.D.22.2
I.D.19.05
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
Installation Manual 47
ENGLISH
[unit:mm]
Pipe connections between indoor and outdoor unit
u Header
[unit:mm]
Models
Gas pipe
Liquid pipe
360
360
120
120
ID12.7
4 branch
ID12.7
ARBL054
ID15.88
ID6.35
ID15.88
120
ID9.52
150
ID9.52
ID12.7
120
ARBL057
ID15.88
120
ID15.88
ID19.05
ID15.88
120
ID6.35
120
ID9.52
150
120
ID15.88
ID19.05
120
ID25.4
150
ID9.52
ID9.52
ID12.7
ID22.2
760
ID19.05
ID15.88
120
ID9.52
ID25.4
120
ID22.2
ID12.7
150
ID9.52
700
182
107
60*9=540
ID15.88
ID12.7
ID6.35
ID6.35
ID19.05
ID15.88
ID31.8
Outdoor Unit
ID9.52
ID6.35
150
775
48
150
ID6.35
ID9.52
ARBL2010
120
120
ID15.88
ID12.7
ID28.58
10 branch
ID6.35
720
160
ARBL1010
ID9.52
ID12.7
ID6.35
ID28.58
10 branch
150
700
160
ID15.88
120
ID9.52
580
ARBL107
ID6.35
ID22.2
ID28.58 ID25.4
7 branch
ID9.52
ID12.7
ID15.88
ID19.05
ID12.7
120 150
360
160
ARBL104
ID6.35
ID9.52
150
400
ID12.7
ID9.52
120
ID12.7
ID15.88
4 branch
150
540
540
ID12.7
120
ID15.88
ID19.05
7 branch
ID6.35
ID34.9
120
150
ID28.58
ID9.52
120
ID9.52
ID15.88
150
ID19.05
Pipe connections between indoor and outdoor unit
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
Close
Liquide pipe
Gas pipe
High/low pressure
common pipe
Close
Close
Liquide pipe
Close
High/low pressure
common pipe
Nitrogen gas
cylinder
Close
Liquid side
Nitrogen gas
cylinder
Indoor unit
Gas side
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.
Installation Manual 49
ENGLISH
Leak Test and Vacuum drying
(1) Leak test
Pipe connections between indoor and outdoor unit
(2) Vacuum
Vacuum drying should be made from the service port provided on the outdoor unitʼs 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).
1. 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.
2. 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.
Slave 1 outdoor unit
Master outdoor unit
Vacuum
pump
Close
Close
Gas pipe
Close
Liquide pipe
High/low pressure
common pipe
Gas pipe
Vacuum
pump
Close
Close
Liquide pipe
High/low pressure
common pipe
Close
Liquid side
Indoor unit
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.
Gas side
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.
50
Outdoor Unit
Pipe connections between indoor and outdoor unit
This function is used for creating vacuum in the system after compressor replacement, ODU parts
replacement or IDU addition/replacement.
Vacuum mode setting method
ODU power reset
Vacuum mode cancellation method
Master unit PCB DIP switch off
- Heat pump : switch off 11,14
- Cooling only : switch off 10,12,13
Master unit PCB DIP switch on
- Heat pump : switch on 11,14
- Cooling only : switch on 10,12,13
Power reset
Vacuum mode cancellation
Press the black button Main PCB (5 sec.)
Vacuum mode setting
ODU V/V OPEN
Main EEV, SC EEV OPEN
IDU EEV OPEN
CAUTION
ODU operation stops during vacuum mode. Compressor can't operate.
Installation Manual 51
ENGLISH
Vacuum Mode
Pipe connections between indoor and outdoor unit
Thermal insulation of refrigerant piping
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.
B
A
C
Heat
insulation
material
Outer
covering
A Heat insulation material
Adhesive + Heat - resistant polyethylene foam +
Adhesive tape
Indoor
Vinyl tape
Floor exposed Water-proof hemp cloth + Bronze asphalt
Water-proof hemp cloth + Zinc plate + Oily paint
Outdoor
Note:
When using polyethylene cover as covering material, asphalt roofing shall not be required.
B Pipe
C Outer covering
(Wind the connection part and cutting part of
heat insulation material with a finishing tape.)
• Do not insulate gas or low pressure pipe and liquid or high
pressure pipe together.
B
F
A
Bad example
• Be sure to fully insulate connecting portion.
A
A Liquid pipe
B Gas pipe
C Power lines
D Finishing tape
C
E Insulating material
D
E
F Transmission lines
A These parts are not insulated.
C
Power lines
D
Transmission lines
D
A
B
E
Good example
A Liquid pipe
Separation
B Gas pipe
C Power lines
D Insulating material
E Transmission lines
Penetrations
Outer wall
Inner wall (concealed)
C
A
Outer wall (exposed)
D
B
A
B
E
B
I
Floor (fireproofing)
Roof pipe shaft
D
I
G
F
Penetrating portion on fire
limit and boundary wall
J
D
B
G
H
A
B
1m
52
Outdoor Unit
1m
Sleeve
Heat insulating material
Lagging
Caulking material
Band
Waterproofing layer
Sleeve with edge
Lagging material
Mortar or other incombustible caulking
Incombustible heat insulation material
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.)
Electrical Wiring
Caution
1. 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.
2. Install the Outdoor Unit transmission line 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.)
3. Be sure to provide designated grounding work to Outdoor Unit.
CAUTION
Be sure to correct the outdoor unit to earth. Do not connect earth line to any gas pipe, liquid pipe,
lightening rod or telephone earth line. If earth is incomplete, it may cause an electric shock.
4. 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.
5. Never connect the main power source to terminal block of transmission line. If connected, electrical parts will
be burnt out.
6. Use 2-core shield cable for transmission line.(O mark in the figure below) If transmission lines 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)
7. Only the transmission line specified should be connected to the terminal block for Outdoor Unit transmission.
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
Remote
control
Multi-Core Cable
Installation Manual 53
ENGLISH
Electrical Wiring
Electrical Wiring
Outdoor Unit
Outdoor Unit
Master
Slave1
Master
Slave2
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
controller
Remote
controller
Remote
controller
Outdoor Unit
Outdoor Unit
Slave1
Slave2
Indoor
Unit
Remote
controller
Master
Slave1
Master
Slave2
Indoor
Unit
Remote
controller
Slave1
Slave2
Indoor
Unit
Indoor
Unit
Remote
controller
Remote
controller
2-Core Shield Cable
Indoor
Unit
Remote
controller
Multi-Core Cable
CAUTION
•
•
•
•
Use the 2-core shield cables for transmission lines. 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.
u Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.
Round pressure terminal
Power wire
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 wiring which is the same thickness, do as shown in the figure below.
• For wiring, use the designated power wire 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, replace inverter PCB and transformer in
control box.
54
Outdoor Unit
Electrical Wiring
- Remove all of the screws at front panel and remove the panel by pulling it forward.
- Connect transmission line between main and sub outdoor unit through the
terminal block.
- Connect transmission lines 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 transmission line between outdoor unit and indoor units
with shielded wire, 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.
UX3
Main PCB
Inverter fan PCB
Noise filter
Reactor
Bridge diode
Magnet switch
Inverter PCB
Take care of the phase
sequence of 3-phase 4-wire
power system
UX1
UX2
Main PCB
Inverter fan PCB
Noise filter
Reactor
Bridge diode
Main PCB
Reactor
Inverter fan PCB
Noise filter
Bridge diode
Magnet switch
Inverter PCB
Inverter PCB
Take care of the phase
sequence of 3-phase 4-wire
power system
Take care of the phase
sequence of 3-phase 4-wire
power system
Installation Manual 55
ENGLISH
Control box and connecting position of wiring
Electrical Wiring
Transmission and Power Lines
1) Transmission cable
•
•
•
•
Types : shielding wire
Cross section : 1.0~1.5mm2
Maximum allowable temperature: 60°C
Maximum allowable line length: under 1000m
2) Remote control cable
• Types : 3-core cable
3) Central control cable
Product type
ACP&AC Manager
AC Smart
Simple central controller
Wire type
(2-shielding wire,2-core wire)
(2-shielding wire,2-core wire)
(2-shielding wire,2-core wire)
Diameter
1.0~1.5mm2
1.0~1.5mm2
1.0~1.5mm2
4) Separation of transmission and power lines
• If transmission and power lines 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 transmission and power lines
where these are to be run side by side
Current capacity of power line
10A
100V or more
Spacing
300mm
50A
500mm
100A
1000mm
Exceed 100A
1500mm
Note:
1. 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 line involved.
2. If the power supply waveform continues to exhibit some distortion the recommended spacing in the
table should be increased.
• If the lines are laid inside conduits then the following point must also be taken into account when grouping
various lines together for introduction into the conduits
• Power lines(including power supply to air conditioner) and signal lines must not be laid inside the same
• In the same way, when grouping the lines power and signal lines should not be bunched together.
CAUTION
n 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.
56
Outdoor Unit
Electrical Wiring
1. Use a separate power supply for the Outdoor Unit and Indoor Unit.
2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when
proceeding with the wiring and connections.
3. The wire 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%.
4. Specific wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cords of parts of appliances for outdoor use should not be lighter than
polychloroprene sheathed flexible cord.
6. 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 wires 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.
Installation Manual 57
ENGLISH
Wiring of main power supply and equipment capacity
Electrical Wiring
Field Wiring
1. 50Hz
u Example Connection of Communication Cable
n 1 Outdoor Unit-3Ø, 380-415V
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Outdoor Unit]
(Main Switch)
R S T N
Switch
Fuse
Power supply
1 Phase 50Hz
220-240V
N
L
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
WARNING
• Indoor Unit ground Lines 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.
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
Master
Outdoor Unit
4
The GND terminal at the main PCB is a ‘-’ terminal for day contact, it is not the point to make
ground connection.
58
Outdoor Unit
Electrical Wiring
n 2 Outdoor Units-3Ø, 380-415V
ENGLISH
■ When the power source is connected
In series between the units.
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Master]
(Main Switch)
[Slave]
R S T N
Switch
Fuse
Power supply
1 Phase 50Hz
220-240V
L
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
■ When the power source is supplied to
Each outdoor unit individually.
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Master]
(Main Switch)
R S T N
Switch
Power supply
1 Phase 50Hz
220-240V
L
[Slave]
R S T N
Switch
Fuse
Fuse
N
Power Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
Installation Manual 59
Electrical Wiring
WARNING
• Indoor Unit ground Lines 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.
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
4
Master
Outdoor Unit
SODU
B
A
IDU
SODU
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
IDU
B
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
A
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)
60
Outdoor Unit
Master
Outdoor Unit
Slave
Outdoor Unit
Electrical Wiring
n 3 Outdoor Units-3Ø, 380-415V
ENGLISH
■ When the power source is connected
In series between the units.
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Master]
(Main Switch)
[Slave1]
[Slave2]
R S T N
Switch
Fuse
Power supply
1 Phase 50Hz
220-240V
L
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
■ When the power source is supplied to
Each outdoor unit individually.
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Master]
(Main Switch)
R S T N
Switch
Power supply
1 Phase 50Hz
220-240V
L
R S T N
Switch
Fuse
[Slave1]
[Slave2]
R S T N
Switch
Fuse
Fuse
N
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
Installation Manual 61
Electrical Wiring
WARNING
• Indoor Unit ground Lines 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.
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
4
Master
Outdoor Unit
SODU
B
62
Outdoor Unit
IDU
A
IDU
A
IDU
B
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
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)
A
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
A
Master
Outdoor Unit
Slave1
Outdoor Unit
Slave2
Outdoor Unit
Electrical Wiring
n 4 Outdoor Units - 3Ø, 380-415V
ENGLISH
n When the power source is connected In series between the units.
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Master]
(Main Switch)
[Slave1]
[Slave2]
[Slave3]
R S T N
Switch
Fuse
Power supply
1 Phase 50Hz
220-240V
N
L
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[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, Cooling Only : 62 Hp)
n When the power source is supplied to Each outdoor unit individually.
3 Phase 4 Wires
Power supply
50Hz 380-415V
[Master]
(Main Switch)
R S T N
Switch
Power supply
1 Phase 50Hz
220-240V
L
Fuse
R S T N
R S T N
Switch
Switch
Fuse
Fuse
[Slave1]
[Slave2]
[Slave3]
R S T N
Switch
Fuse
N
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
Installation Manual 63
Electrical Wiring
WARNING
• Indoor Unit ground Lines 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.
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
4
Master
Outdoor Unit
SODU
B
IDU
A
IDU
A
IDU
SODU
B
64
Outdoor Unit
A
IDU
B
A
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
B
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
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)
A
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
A
Master
Outdoor Unit
Slave1
Outdoor Unit
Slave2
Outdoor Unit
Slave3
Outdoor Unit
Electrical Wiring
ENGLISH
2. 60Hz
u Example Connection of Communication Cable
n 1 Outdoor Unit - 3Ø, 380V
3 Phase 4 Wires
Power supply
60Hz 380V
[Outdoor Unit]
(Main Switch)
R S T N
Switch
Fuse
Power supply
1 Phase 60Hz
220V
L
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
WARNING
• Indoor Unit ground Lines 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.
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
Master
Outdoor Unit
4
The GND terminal at the main PCB is a ‘-’ terminal for day contact, it is not the point to make
ground connection.
Installation Manual 65
Electrical Wiring
n 2 Outdoor Units - 3Ø, 380V
n When the power source is connected In series between the units.
3 Phase 4 Wires
Power supply
60Hz 380V
[Master]
(Main Switch)
[Slave]
R S T N
Switch
Fuse
Power supply
1 Phase 60Hz
220V
L
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
n When the power source is supplied to Each outdoor unit individually.
3 Phase 4 Wires
Power supply
60Hz 380V
[Master]
(Main Switch)
R S T N
Switch
Power supply
1 Phase 60Hz
220V
L
[Slave]
R S T N
Switch
Fuse
Fuse
N
Power Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
66
Outdoor Unit
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Electrical Wiring
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
4
Master
Outdoor Unit
SODU
B
A
IDU
SODU
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
IDU
B
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
A
Master
Outdoor Unit
Slave
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)
Installation Manual 67
ENGLISH
WARNING
• Indoor Unit ground Lines 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.
Electrical Wiring
n 3 Outdoor Units - 3Ø, 380V
n When the power source is connected In series between the units.
3 Phase 4 Wires
Power supply
60Hz 380V
[Master]
(Main Switch)
[Slave1]
[Slave2]
R S T N
Switch
Fuse
Power supply
1 Phase 60Hz
220V
L
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
n When the power source is supplied to Each outdoor unit individually.
3 Phase 4 Wires
Power supply
60Hz 380V
[Master]
(Main Switch)
R S T N
Switch
Power supply
1 Phase 60Hz
220V
L
R S T N
Switch
Fuse
[Slave1]
[Slave2]
R S T N
Switch
Fuse
Fuse
N
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
68
Outdoor Unit
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Electrical Wiring
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
4
Master
Outdoor Unit
SODU
B
IDU
A
IDU
B
IDU
B
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
A
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
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)
A
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
A
Master
Outdoor Unit
Slave1
Outdoor Unit
Slave2
Outdoor Unit
Installation Manual 69
ENGLISH
WARNING
• Indoor Unit ground Lines 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.
Electrical Wiring
n 4 Outdoor Units - 3Ø, 380V
n When the power source is connected In series between the units.
3 Phase 4 Wires
Power supply
60Hz 380V
[Master]
(Main Switch)
[Slave1]
[Slave2]
[Slave3]
R S T N
Switch
Fuse
Power supply
1 Phase 60Hz
220V
L
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[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, Cooling Only : 62 Hp)
n When the power source is supplied to Each outdoor unit individually.
3 Phase 4 Wires
Power supply
60Hz 380V
[Master]
(Main Switch)
R S T N
Switch
Power supply
1 Phase 60Hz
220V
L
Fuse
R S T N
R S T N
Switch
Switch
Fuse
Fuse
[Slave1]
[Slave2]
[Slave3]
R S T N
Switch
Fuse
N
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
70
Outdoor Unit
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Electrical Wiring
Between Indoor and Master Outdoor unit
SODU
B
3
A
4
IDU
B
INTERNET DRY1 DRY2 GND 12V
A
B
3
A
4
3
4
Master
Outdoor Unit
SODU
B
IDU
A
IDU
A
IDU
SODU
B
A
IDU
B
A
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
B
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
INTERNET DRY1 DRY2 GND 12V
A
B
SODU
B
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)
A
B
A
INTERNET DRY1 DRY2 GND 12V
A
B
A
Master
Outdoor Unit
Slave1
Outdoor Unit
Slave2
Outdoor Unit
Slave3
Outdoor Unit
Installation Manual 71
ENGLISH
WARNING
• Indoor Unit ground Lines 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.
Electrical Wiring
u Example Connection of Communication Cable
[BUS type]
[STAR type]
• Abnormal operation can be caused by
• Connection of communication cable must be
installed like below figure between indoor unit to communication defect, when connection of
communication cable is installed like below
outdoor unit.
figure(STAR type).
72
Outdoor Unit
Electrical Wiring
u UX1 Chassis Wire Connection
ENGLISH
Left Side
Right Side
Main Power Terminal Block
Main Power Terminal Block
Main Power Terminal Block
Main Power Terminal Block
Power/Ground lines
Power/Ground lines
Ground Cable
Ground Cable
Over 50mm Gap
Over 50mm Gap
Communication line
Communication line
Front Side 2
Front Side 1
Main Power Terminal Block
Main Power Terminal Block
Main Power Terminal Block
Main Power Terminal Block
Ground Cable
Ground Cable
Power/Ground lines
Over
50mm Gap
Power/Ground lines
Communication line
Over 50mm Gap
Main Power Connection
Communication line
Main PCB Connection
Main Power Terminal Block
Insulation sleeves attachments
Ground Cable
ODU-ODU
Communication line
ODU-IDU
Communication
line
Fix firmly not
to be displaced
Main Power Terminal Block
Installation Manual 73
Electrical Wiring
u UX2 Chassis Wire Connection
Left Side
Right Side
Main Power
Terminal Block
Main Power
Terminal Block
Main Power
Terminal Block
Power/Ground lines
Power/Ground lines
Ground Cable
Ground Cable
Over 50mm Gap
Over 50mm Gap
Communication line
Communication line
Front Side 1
Front Side 2
Main Power
Terminal Block
Main Power
Terminal
Block
Main Power
Terminal Block
Main Power
GroundBlock
Cable
Terminal
Ground Cable
Power/Ground lines
Over
50mm Gap
Power/Ground lines
Communication line
ODU-ODU
Communication line
Communication line
Over 50mm Gap
Main Power Connection
Main PCB Connection
Main Power
MainPower
Main
Power
Terminal Block
Terminal
Block
Terminal
Block
Insulation sleeves attachments
Ground Cable
ODU-ODU
Communication line
Fix firmly not to be displaced
Main Power
Terminal Block
Ground Cable
74
Outdoor Unit
ODU-IDU
Communication line
Electrical Wiring
u UX3 Chassis Wire Connection
Main Power
႖ဴఎၴఝ
ENGLISH
Right Side
Left Side
Main Power
Terminal Block
Main Power
Terminal Block
Terminal Block
Power/Ground lines
Power/Ground lines
Ground Cable
Ground Cable
Over 50mm Gap
Over 50mm Gap
Communication line
Communication line
Front Side 1
Front Side 2
Main Power
Terminal Block
Main Power
Terminal Block
Ground Cable
Ground Cable
Main Power
Terminal Block
Power/Ground lines
ODU-ODU
Communication line
Over
50mm Gap
Power/Ground lines
Communication line
Communication line
Over 50mm Gap
Main Power Connection
:
;
<
6
Main PCB Connection
Main Power Terminal Block
Insulation sleeves attachments
Ground Cable
ODU-ODU
Communication line
ODU-IDU
Communication
line
Main Power
Terminal Block
Fix firmly not
to be displaced
Main Power Terminal Block
Installation Manual 75
Electrical Wiring
Location of setting dip switch
SW01B
SW02B
7 - Segment
SW02V
(Auto Addressing)
76
Outdoor Unit
Electrical Wiring
■ Checking according to dip switch setting
1. 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.
2. It checks whether the input is properly performed without the bad contact of the dip switch or not
■ Checking the setting of the Master unit
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)
Master model code ➔ Slave1 model code ➔ Slave2 model code ➔ total capacity ➔ 2 ➔ 25 ➔ 153
1~255 : Master model code
1~255 : Slave 1 model code
1~255 : Slave 2 model code
1~255 : Slave 3 model code
}
Refer to table code
6~80HP : HP number(sum of master capacity and slave capacity)
No display : cooling only
2 : heat pump
25 : normal
153 : Model Type(ARUNxxxN3)
Example) 30Hp, R410A
16 → 15 → 30 → 2 → 25 → 153
CAUTION
Product may not properly operate if the relevant DIP switch is not properly setup.
Model Code
Model Code
11
12
13
14
15
16
17
18
Unit (HP)
6
8
10
12
14
16
18
20
Unit
Ref.
Master &
Slave
R410A
Installation Manual 77
ENGLISH
DIP switch setting
Electrical Wiring
n Setting the DIP switch
• Heat pump
• If you set the Dip switch when power is on, the changed setting will not be applied immediately.
The changed setting will be enabled only when Power is reset or by pressing Reset button.
Index
Heating capacity up
IDU Fan RPM Control
1
2
4
5
6
7
8
9
10 11 12 13 14
●
Auto charging
● ●
●
ⅹ ⅹ
Refrigerant Checking Function
● ●
●
ⅹ ●
Integrated test operation function (Cooling)
● ●
ⅹ
● ⅹ
Integrated test operation function (Heating)
● ●
ⅹ
● ●
●
Inverter backup
●
Unit backup
Function
3
●
Non-operation indoor unit EEV adjustment
ⅹ ⅹ
● ⅹ ⅹ
Indoor unit target subcooling/overheating adjustment
ⅹ ⅹ
ⅹ ● ⅹ
Operation indoor unit EEV adjustment
ⅹ ●
● ⅹ ⅹ
● ● ⅹ
Dry contact
Snow removal fuction
● ⅹ
Forced defrost
ⅹ ●
● ●
Snow removal+Forced defrost
●
Forced overall defrost
Static pressure mode
●
ⅹ ⅹ
ⅹ ● ⅹ
● ⅹ ●
Nigh low noise operation (Cooling only)
● ● ●
Night low noise operation (Cooling/Heating)
Pump down
●
ⅹ
Pump out
●
●
Forced oil return operation
ⅹ ⅹ
●
●
Only overall defrost
Selector Fan/ All OFF
ⅹ ⅹ
● ●
Master unit
ⅹ ⅹ ⅹ
Slave 1 unit
● ⅹ ●
Slave 2 unit
ⅹ ● ●
Slave 3 unit
● ● ●
CAUTION
1. ʻXʼ mark within the table means that the dip switch must be pulled down. If not, the function may not work properly.
2. If the applicable dip switch is not set properly, the product may not work properly.
3. When executing the test operation, check the operating condition of the indoor unit and only execute the operation
when all indoor units are stopped.
4. Auto test operation function does not work for the product where only one indoor unit is connected for use.
5. Cooling Only model is not working on functions of Heat Pump model.
78
Outdoor Unit
ⅹ
● ⅹ ⅹ
ODU Address setting
ODU
setting
ⅹ
● ⅹ ⅹ ●
Vacuum mode
Electrical Wiring
Index
Function
ODU
setting
Auto charging
Refrigerant Checking Function
Integrated test operation function (Cooling)
Inverter backup
Unit backup
Indoor unit target subcooling/overheating adjustment
Dry contact
Snow removal fuction
Static pressure mode
Nigh low noise operation (Cooling only)
Pump down
Forced oil return operation
Vacuum mode
Master unit
Slave 1 unit
Slave 2 unit
Slave 3 unit
1
2
●
●
●
●
●
●
3
4
5
6
7
8
9
ENGLISH
• Cooling only
• If you set the Dip switch when power is on, the changed setting will not be applied immediately.
The changed setting will be enabled only when Power is reset or by pressing Reset button.
10 11 12 13 14
●
●
ⅹ
ⅹ
ⅹ
●
ⅹ
●
ⅹ
ⅹ
●
●
ⅹ
ⅹ
ⅹ
ⅹ
●
ⅹ
ⅹ
●
●
●
ⅹ
ⅹ
ⅹ
ⅹ
ⅹ
ⅹ
ⅹ
●
●
●
ⅹ
ⅹ
●
ⅹ
●
●
●
ⅹ
●
ⅹ
●
ⅹ
ⅹ
●
●
ⅹ
●
●
●
CAUTION
1. ʻXʼ mark within the table means that the dip switch must be pulled down. If not, the function may not work properly.
2. If the applicable dip switch is not set properly, the product may not work properly.
3. When executing the test operation, check the operating condition of the indoor unit and only execute the operation
when all indoor units are stopped.
4. Auto test operation function does not work for the product where only one indoor unit is connected for use.
5. Cooling Only model is not working on functions of Heat Pump model.
Installation Manual 79
Electrical Wiring
Automatic Addressing
• The address of indoor units would be set by auto addressing
1) Wait for 3 minutes after supplying power.
(Master and Slave outdoor units, indoor units)
2) Press RED button of the outdoor units for 5
seconds. (H/P : SW0B, C/O : SW02V)
3) A “88” is indicated on 7-segment LED of the
outdoor unit PCB.
4) For completing addressing, 2~7 minutes are
required depending on numbers of connected
indoor units
5) Numbers of connected indoor units whose
addressing is completed are indicated for 30
seconds on 7-segment LED of the outdoor
unit PCB
6) 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)
SW01B
SW02B
7 - Segment
SW02V
(Auto Addressing)
CAUTION
• In replacement of the indoor unit PCB, always perform Auto 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.
• Auto addressing is only possible on the master Unit.
• Auto addressing has to be performed after 3 minutes to improve communication.
80
Outdoor Unit
Electrical Wiring
u The Procedure of Automatic Addressing
ENGLISH
Power On
Waiting 3 minutes
Press RED Button for 5 sec.
(H/P : SW0B, C/O : SW02V)
7-segment LED
Auto addressing start
= 88
Don’t press RED Button
(H/P : SW0B, C/O : SW02V)
Waiting about 2~7 minutes
7-segment LED
= 88
YES
OK
NO
• Auto addressing setting end
Numbers of indoor unit connection set whose
addressing is completed are indicated for 30seconds
on 7-segment LED after completing setting
Check the connections
of transmission line
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 auto addressing is completed normally.
Installation Manual 81
Electrical Wiring
Group Number setting
Group Number setting for Indoor Units
① Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off.
② The transmission lines connected to INTERNET terminal should be connected to central control of Outdoor
Unti with care for their polarity( A ’ A, B ’ B )
③ Turn the whole system on.
④ Set the group and Indoor Unit number with a wired remote control.
⑤ To control several sets of Indoor Units into a group, set the group ID from 0 to F for this purpose.
Outdoor Units
[Heat Pump]
[Cooling Only]
SODU
SODU B SODU A
IDU B
IDU A
INT B
B
B
A
IDU
INTERNET DRY1 DRY2 GND 12V
INT A
B(D)
A(C)
B
A
B
A
A
B
B(D)
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 simple 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)
82
Outdoor Unit
A
A(C)
Electrical Wiring
• Connect wires as below figure at the hole of backside of Outdoor Unit Dry Contact.
• Insert the wire in the connection hole pushing the "Push" button.
• Setting Main PCB Dip SW of Master Outdoor Unit.
Push Button
- Insert wire method -
¨≠GND
¨≠GND
< Outdoor Main PCB >
¨
≠
shows field wiring
3
1
4
2
Push arrow direction.
¨
≠
GND
3
1
4
2
GND
connected wiring
Insert wire to connector.
<Outdoor Dry Contact Back Side >
❈ Communication line length can be maximum 300m, use communication line as thick as 1.25mm2.
Without Cool/Heat Selector Installation and Connection
In case, try to set mode without Cool/Heat Selector and try to use other switch except from LG Outdoor
Cool/Heat Selector in field.
Connect signal terminal block as below figure and description.
- How to set mode without Cool/Heat Selector
• Cooling Mode Setting
¿ ‘ GND Connection
¡ ‘ Off (Open)
GND
• Heating Mode Setting
¿ ‘ GND Connection
¡ ‘ GND Connection
GND
• Fan/ All OFF Mode Setting
¿ ‘ Off (Open)
¡ ‘ GND Connection
GND
Installation Manual 83
ENGLISH
Cool and Heater Selector Installation and Connection
Test Run
Test Run
Checks Before Test Run
1
Check to see whether there is any refrigerant leakage, and slack of power or transmission cable.
2
Confirm that 500 V megger shows 2 MΩ or more between power supply terminal block and ground.
Do not operate in the case of 2 MΩ or less.
NOTE: Never carry out megaohm check over terminal control board. Otherwise the control board
would be broken.
Immediately after mounting the unit or after leaving it turned off for an extended length of time,
the resistance of the insulation between the power supply terminal board and the ground may
decrease to approx. 2 MΩ as a result of refrigerant accumulating in the internal compressor.
If the insulation resistance is less than 2 MΩ, turning on the main power supply and energizing
the crankcase heater for more than 6 hours will cause the refrigerant to evaporate, increasing
the insulation resistance.
3
Check if high/low pressure common pipe, liquid pipe and gas pipe valves are fully opened.
NOTE: Be sure to tighten caps.
4
Check if there are any problems in automatic addressing or not:
Check and confirm that there are no error messages in the display of indoor units or remote controls
and LED in outdoor units.
Functions of each Test run steps
(Use above LG MV 6.1 version if you want to issue integrated test run report)
Step 0. Verify the command signals
Select function to be executed during the test run
Step 1. Examine Sensor
Examine the normal operations of the sensors attached to the outdoor/indoor units
Step 2. Refrigerant Automatic Recharge
If additional bottling of the refrigerant is needed, operate to perform this automatically.
Step 3. Automatic Refrigerant Decisions
Inspect if the bottled refrigerant in the system has adequate quantity.
Step 4. Integrated Test Run
Process to verify the normal operations of the parts attached to the system, and verify normal operation of the
system.
Step 5. Real-time sensor checking
Check the sensors while operating in real-time.
h Gas pipes and Liquid pipes connections inspection
: Inspect whether the gas pipes and Liquid pipes are connected to each other.
CAUTION
when cutting main power of the Multi V
• Always apply main power of the outdoor unit during use of product
(cooling season/heating season).
• Always apply power 6 hours in advance to heat the crank case heater where performing test run
after installation of product. It may result in burning out of the compressor if not preheating the
crank case with the electrical heater for more than 6 hours.(In case of the outdoor temperatue
below 10°C)
84
Outdoor Unit
Test Run
The phenomena from main component failure
Component
Phenomenon
Not operating
Outdoor
EEV
Check method and Trouble shooting
Motor insulation broken Check resistance between terminals and
chassis
Strainer clogged
Change strainer
Oil leakage
Check oil amount after opening oil port
Stop during running
Motor insulation failure
Check resistance between terminals and
chassis
Abnormal noise
during running
R-S-T misconnection
Check compressor R-S-T connection
High pressure error
at cooling
Motor failure,
Check the outdoor fan operation after being
bad ventilation around turned the outdoor units off for some time.
outdoor heat exchanger Remove obstacles around the outdoor units
Heating failure,
frequent defrosting
Bad connector contact
Check connector
No operating sound
at applying power
Coil failure
Check resistance between terminals
Heating failure,
frozen outdoor heat
exchanger part
EEV clogged
Service necessary
Low pressure error
or discharge
temperature error
EEV clogged
Service necessary
Compressor
Outdoor
fan
Cause
When system fault occurs, the error code is displayed at indoor unit display or remote control display,
the trouble shooting guide is in the service manual
Installation Manual 85
ENGLISH
How to Cope with Test Run Abnormality
Test Run
Sensor Checking Function
Sensor checking function judges whether the current temperature of indoor and outdoor unit sensors is right or
not. 3 indoor temperature sensors, 9 outdoor temperature sensor Note 1), 2 outdoor pressure sensors.
DIP Switch Settings
Start
3 minutes
past after power
reset
YES
- Setting1
(Refrigerant Auto Recharge)
NO
- Setting2
(Refrigerant Quantity Auto Decide)
DIP switch set
- Setting3
(Integrated Test Run - cooling)
- Setting4
(Integrated Test Run - heating)
Setting 1
Setting 2
Setting 3
Setting 4
Warning : Please reset Main PCB before starting this function
Note 3)
NO
Press black button
for 2 seconds
Sensor Normal
Press black button for
5 seconds
YES
NO
Setting 1
Setting 2
Refrigerant
Auto Recharge
Refrigerant
Auto decide
Setting 3
Setting 4
Display Error
Press black button for 2 seconds
End
All DIP switches OFF and press black
button for 2 seconds
E: Cooling
F: Heating
Data Reset and Wait
Start Inspection of each Function
Note 1. Outdoor temperature number is different according to each chassis.
UX1
UX2(1 Comp)
UX2
UX3 (2 Comp)
UX3
Cooling Only
6
6
7
7
8
Heat Pump
-
7
8
8
9
Note 2. Please check the sensor that is found abnormal.
Note 3. Each step is displayed on the Main PCB LED.
Note 4. Please refer to the sensor error descriptions on the next page.
WARNING
1. Please confirm if auto addressing function was executed. (Check the number of installed indoor units)
2. Error may occur when the sensor is normal according to the installed location and the temperature
conditions. When error occurs, please check each sensor and decide faultiness.
86
Outdoor Unit
Test Run
ENGLISH
Sensor Check Error Code Display
In case error occurs during sensor checking process, error display is as shown below.
Following contents are displayed one after the other on the main PCB of master outdoor unit.
Indoor sensor error :
319
Outdoor sensor error :
309
Displaying error content
* 5 number of errors is displayed
continuously and repeatedly.
Displaying error content
■ Indoor unit error display
1.1st and 2nd number represents indoor unit number.
2. Last number represents sensor.
ex) Indoor unit No. 2 Pipe inlet temperature sensor
error
1: Pipe inlet temperature sensor
2: Pipe outlet temperature sensor
3: Air temperature sensor
■ Displaying outdoor unit error
1.1st and 2nd number represents error content(code).
2.Last number represents outdoor unit number.
1 : Master
2 : Slave 1
3 : Slave 2
4 : Slave 3
* Indoor unit number follows auto addressing number.
(To check the LGMV Data)
Table 1. ODU Sensor Error Code
No.
1
2
5
6
7
8
9
10
11
12
14
Sensor type
Outdoor Air Temperature
Heat Exchanger Temperature
Liquid Pipe Temperature
SC pipe out
Suction Temperature
Inverter Comp. Discharge Temperature
Constant Comp.1 Discharge Temperature
Constant Comp.2 Discharge Temperature
High Pressure
Low Pressure
IPM temperature
Table 2. IDU Sensor Error Code
No.
1
2
3
Classification
Pipe In Temperature
Pipe Out Temperature
Indoor Air Temperature
ex) Outdoor Master Unit Liquid pipe temperature
sensor error
ex) IDU No.2 Pipe inlet temperature sensor error and Master
ODU suction temperature sensor, Slave 3 high pressure
sensor error
.......
Caution
1. Up to 5 number of errors is displayed continuously and
repeatedly. In case 5 error occurs, again perform sensor
checking after solving errors.
2. IDU in which error occurred operates air circulation mode.
Installation Manual 87
Test Run
Refrigerant Auto Charging (Setting 1)
This function charges appropriate amount of refrigerant automatically through cycle operation.
It can be used when refrigerant amount Isn't certain because of SVC and leakage.
Start
Wait for 3 min. after power reset
Set the Dip S/W.
(Refer to DIP S/W setting)
Press the black button.
(Press until ‘508’ is displayed)
Press the black button.
IDU runs with cooling mode In designated order.
Is it necessary to
charge refrigerant?
Yes
*1)
No
Press the black button
Refrigerant Auto
Charging Process
IDU and ODU are turned off when Auto Charging
is completed. Close the valve.
Main PCB
SW01V
Press the black button
Press the black button for 2 sec. after turning off
all of dip S/W.
Completed.
DIP Switch Settings
Warning : Please reset Main PCB before starting this function
Note
1. After installing the refrigerant charging device,
as shown in figure, open the valve
2. In case air temperature is out of guaranteed temperature, it may end without performing Auto charging
3. Refrigerant charging Time may change according to the charging amount. (Abt. 1.5min/lb)
88
Outdoor Unit
*2)
Test Run
ENGLISH
Liquid Pip
Pipe
Gas Pip
Pipe
manifold
Capillary Assembly
Procedure
1. Arrange manifold,capillary assembly, refrigerant vessel and scale
2. Connect manifold to the gas pipe service valve of ODU as shown in the figure.
3. Connect manifold and Capillary tube.
Use designated capillary assembly only.
If designated capillary assembly isn't used, the system may get damaged.
4. Connect capillary and refrigerant vessel.
5. Purge hose and manifold.
6. After
Is displayed, open the valve and charge the refrigerant
n Error contents about auto refrigerant charging function
1.
3.
4.
: Temperature Range Error (In case that IDU or ODU is out of range)
2.
: Low Pressure Descent Error (In case the system runs at low pressure limit for over 10
minutes)
: Judging rapid refrigerant inflow ( In case the liquid refrigerant flows in because of not using
designated Capillary Assembly)
: Instability Error( In case the high/low pressure target doesn't get satisfied for some time
after the starting operation)
CAUTION
1. Guaranteed temperature range (Error will occur if temperature is out of range)
IDU : 20°C(68°F) ~ 32°C(90°F)
ODU : 0°C(32°F) ~ 43°C (77°F)
2. For refrigerant charging, use designated device only. (Capillary Assem Set)
3. Set the IDU wired remote controller temperature sensing mode as IDU
4. Be careful that IDU should not be thermo off.
Installation Manual 89
Test Run
Refrigerant Checking Function (Setting 2)
This function judges refrigerant leakage and overcharging
It can be used with refrigerant auto charging function.
Inspection Start
Press black button for 2 seconds
Display Error
YES
NO
Proper Temperature
NO
Thermo off indoor unit
YES
Decide Refrigerant Quantity
Display Error
Based on Refrigerant Quantity
Press black button for 2 seconds
End
Too much
Refrigerant
Not enough
Refrigerant
Cannot tell
Quantity
Refrigerant
Quantity
Normal
Gas/Liquid
pipe direct
connection
Press black button for 2 seconds
Data Reset and Wait
Indoor Unit OFF
DIP Switch Settings
Warning : Please reset Main PCB before starting this function
Note
1. In case air temperature is out of guaranteed temperature, refrigerant checking function may end without performing
refrigerant checking. Use guaranteed temperature range only.
2. During the process of judging refrigerant amount, if the cycle isn't stable, refrigerant checking function may end
without performing refrigerant checking.
90
Outdoor Unit
Test Run
2. Set IDU wired remote controller temperature sensor setting as 'IDU'.
3. Make certain that IDU doesn't run with thermo off mode during operation.
[ Error contents about auto refrigerant charging function ]
1.
: Temperature Range Error (In case that IDU or ODU is out of range)
2.
: System Unstable Error (In case, After 45 min operating the system, it does not be
stable)
How to Cope with Result of Refrigerant checking
1. If the temperature is not in guaranteed Temperature range, the system will not execute Refrigerant
checking and the system will be OFF.
2. Excess of Refrigerant(619)
After remove the 20% of calculated total refrigerant, recharge the refrigerant by using Refrigerant Auto
Charging Function.
3. Scarcity of Refrigerant(629)
Charge the refrigerant by using Refrigerant Auto Charging Function.
4. Impossible to Judge(639)
IF the system is not in order, check the other problem except refrigerant.
Installation Manual 91
ENGLISH
CAUTION
1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range)
IDU : 20 ~ 35 °C
ODU : 0 ~ 43 °C
Test Run
Integrated Test Running Function_Cooling Mode (Setting 3)
This function is checking process for normal operation of parts and system On operating system.
• All processes carry out included refrigerant amount judge logic and check normal condition of parts on
cooling mode.
• This function check only normal condition of parts on heating mode.
• Saved data can check using LGMV.
Start
Press the black button for 2 sec
All IDU operation on
Cooling mode
Error Display
Temp. Condition
Yes
Thermo off
IDU judge
No
Yes
Error Display
Refrigerant amount judge
during all IDU operation
data on Test Runing(15min)
Press the black button for 2 sec
1 IDU operation
End
Note 1
1 IDU operation data
(10min)
Press the black button for 2 sec.
after turning off all of Dip switch.
Completed
DIP Switch Settings
Warning : Please reset Main PCB before starting this function
Note
1. Judge the normal condition refer to report of Test Running.
92
Outdoor Unit
Test Run
This function is checking process for normal operation of parts and system On operating system.
• All processes carry out included refrigerant amount judge logic and check normal condition of parts on heating
mode.
• This function check only normal condition of parts on heating mode.
• Saved data can check using LGMV.
Start
Press the black button for 2 sec.
Temp. Condition
No
Error Display
Yes
Error Display
Note 1
All IDU operation data(10min)
(All-1) IDU operation
1 IDU operation
End
Oil return operation
Press the black button for 2 sec.
after turning off all of Dip switch.
System off
Completed
DIP Switch Settings
Warning : Please reset Main PCB before starting this function
Note
1. Judge the normal condition refer to report of Test Running.
Installation Manual 93
ENGLISH
Integrated Test Running Function_Heating Mode (Setting 4)
Test Run
CAUTION
1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range)
IDU : 20 ~ 35 °C
ODU : 0 ~ 43 °C
2. Set IDU wired remote controller temperature sensor setting as 'IDU'.
3. Make certain that IDU doesn't run with thermo off mode during operation.
[ Error contents about auto refrigerant charging function ]
1.
: Temperature Range Error (In case that IDU or ODU is out of range)
2.
: System Unstable Error (In case, After 45 min operating the system, it does not be stable)
How to Cope with Result of Refrigerant checking
1. If the temperature is not in guaranteed Temperature range, the system will not execute Refrigerant
checking and the system will be OFF.
2. Excess of Refrigerant(619)
After remove the 20% of calculated total refrigerant, recharge the refrigerant by using Refrigerant Auto
Charging Function.
3. Scarcity of Refrigerant(629)
Charge the refrigerant by using Refrigerant Auto Charging Function.
4. Impossible to Judge(639)
IF the system is not in order, check the other problem except refrigerant.
94
Outdoor Unit
Test Run
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.
Max. RPM setting method
RPM / Time Settings
Capacity
Set the DIP S/W
Heat Pump 16kW 23~35kW 41~58kW Judgment Operation
Cooling Only 16~23kW 29~41kW 46~58kW Time(Hr) Time(Hr)
Step
Reset the power
8
6.5
9
10.5
3
5
12
4
8
6.5
9
10.5
6
5
12
7
8
6.5
9
10.5
5
12
2
Note 1)
Setting the Fan Max. RPM
730
5
Setting Complete
Example of Max. RPM Setting
680
510
800
620
780
9
Setting Method for Fan Max. RPM
Black Button
1 time
2 time
3 time
4 time
5 time
6 time
7 time
8 time
9 time
900
790
620
8
Step
1
2
3
4
5
6
7
8
9
Fan Maximum RPM
1
Noise
Red Button
1 time
1 time
1 time
1 time
1 time
1 time
1 time
1 time
1 time
Capacity
Heat Pump
Cooling Only
23~35kW
29~41kW
16kW
16~23kW
Step
Standard
41~58kW
46~58kW
Noise(dB)
56
58
62
53
55
59
50
52
56
47
49
53
DIP Switch Settings
[Heater Pump]
[Cooling only]
Warning : Please reset Main PCB before starting this function
CAUTION
1. Request installer to set the function during installation.
2. In case the function is not used, set the dip S/W OFF and reset the power.
3. If ODU RPM changes, cooling capacity may go down.
Installation Manual 95
ENGLISH
Night Low Noise Function
Test Run
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
Vacuum mode cancellation method
ODU power reset
Set the DIP S/W OFF
Set the DIP S/W ON
Power reset
Press the black button Main PCB (5 sec.)
Vacuum mode cancellation
Vacuum mode setting
ODU V/V OPEN
Main EEV, SC EEV OPEN
IDU EEV OPEN
DIP Switch Settings
Warning : Please reset Main PCB before starting this function
CAUTION
ODU operation stops during vacuum mode. Compressor can't operate.
96
Outdoor Unit
Test Run
This function secures the air flow rate of ODU, in case static pressure has been applied like using duct at
fan
discharge of ODU.
n Static pressure compensation dip S/W setting method
High static pressure mode : Set DIP S/W
Static pressure compensation mode setting
method
Static pressure compensation mode cancellation
method
Set the DIP S/W ON
DIP switch OFF
Power Reset
Power Reset
Static pressure compensation mode is set
Static pressure compensation mode is cancelled
DIP Switch Settings
Warning : Please reset SVC (Heat Pump)/ Main PCB (Cooling only)before starting this function
Installation Manual 97
ENGLISH
Static pressure compensation mode
Test Run
Self-Diagnosis Function
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 7-segment 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 LED of 7-segment indicates error number, 3rd LED indicates unit number.
Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2
011 ’ 051 : No.105 error of master unit
h Refer to the DX-Venitilation manual for DX-Venitilation error code
Display
Title
Indoor unit related error
0
1
-
0
2
-
0
3
-
0
4
-
0
5
-
0
6
-
0
9
-
Indoor EEPROM Error
1
0
-
Poor fan motor operation
1
7
-
Inlet Air temperature sensor of FAU
1
2
Outdoor unit related error
2
1
3
4
1
2
2
2
3
4
98
Cause of Error
Air temperature sensor of indoor unit
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor
unit
Communication error : wired remote
controller ÷ indoor unit
Inlet pipe temperature sensor of indoor unit is open or
short
Failing to receive wired remote controller signal in indoor
unit PCB
Drain pump
Malfunction of drain pump
Communication error : outdoor unit ÷
indoor unit
Outlet pipe temperature sensor of indoor
unit
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
Inverter Board Input Over Current(RMS)
of Master Outdoor Unit
Inverter Board Input Over Current(RMS)
of Slave1 Outdoor Unit
Inverter Board Input Over Current(RMS)
of Slave2 Outdoor Unit
Inverter Board Input Over Current(RMS)
of Slave3 Outdoor Unit
Outdoor Unit
Failing to receive outdoor unit signal in indoor unit PCB
Outlet pipe temperature sensor of indoor unit is open or
short
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
Disconnecting the fan motor connector/Failure of indoor
fan motor lock
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
Master Outdoor Unit Inverter Board Input Current excess
(RMS)
Slave1 Outdoor Unit Inverter Board Input Current excess
(RMS)
Slave2 Outdoor Unit Inverter Board Input Current excess
(RMS)
Slave3 Outdoor Unit Inverter Board Input Current excess
(RMS)
Test Run
Display
2
Outdoor unit related error
2
2
2
2
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 Master Outdoor Unit input voltage is over 487V or
High/ Low Voltage
below 270V
2
Slave1 Outdoor Unit Input Voltage Slave1 Outdoor Unit input voltage is over 487V or
High/ Low Voltage
below 270V
3
Slave2 Outdoor Unit Input Voltage Slave2 Outdoor Unit input voltage is over 487V or
High/ Low Voltage
below 270V
4
Slave3 Outdoor Unit Input Voltage Slave3 Outdoor Unit input voltage is over 487V or
High/ Low Voltage
below 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
3
4
5
6
8
9
Cause of Error
DC charging is not performed at Master Outdoor Unit
after starting relay turn on.
Master Outdoor Unit Inverter DC
1 link High Voltage
System is turned off by Master Outdoor Unit DC
Voltage Over Charging
Slave1 Outdoor Unit Inverter DC
2 link High Voltage
System is turned off by Slave1 Outdoor Unit DC
Voltage Over Charging
Slave2 Outdoor Unit Inverter DC
3 link High Voltage
System is turned off by Slave2 Outdoor Unit DC
Voltage Over Charging
Slave3 Outdoor Unit Inverter DC
4 link High Voltage
System is turned off by Slave3 Outdoor Unit DC
Voltage Over Charging
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
Installation Manual 99
ENGLISH
2
Title
Master Outdoor Unit Inverter
1
Compressor DC link Low Voltage
Test Run
Display
Title
Cause of Error
Master Outdoor Unit Constant Speed
System is turned off by Master Outdoor Uunit Constant Speed
1
Compressor2 High Discharge Temperature Compressor2 High Discharge Temperature
3
Outdoor unit related error
3
3
2
Slave1 Outdoor Unit Constant Speed
System is turned off by Slave1 Outdoor Unit Constant Speed
Compressor2 High Discharge Temperature Compressor2 High Discharge Temperature
3
Slave2 Outdoor Unit Constant Speed
System is turned off by Slave2 Outdoor Unit Constant Speed
Compressor2 High Discharge Temperature Compressor2 High Discharge Temperature
4
Slave3 Outdoor Unit Constant Speed
System is turned off by Slave3 Outdoor Unit Constant Speed
Compressor2 High Discharge Temperature Compressor2 High Discharge Temperature
1
Master Outdoor Unit Inverter Compressor
High Discharge Temperature
System is turned off by Master Outdoor Unit Inverter Compressor
High Discharge Temperature
2
Slave1 Outdoor Unit Inverter Compressor
High Discharge Temperature
System is turned off by Slave1 Outdoor Unit Inverter Compressor
High Discharge Temperature
3
Slave2 Outdoor Unit Inverter Compressor
Discharge High Temperature
System is turned off by Slave2 Outdoor Unit Inverter Compressor
High Discharge Temperature
4
Slave3 Outdoor Unit Inverter Compressor
High Discharge Temperature
System is turned off by Slave3 Outdoor Unit Inverter Compressor
High Discharge Temperature
1
Master Outdoor Unit Constant Speed
System is turned off by Master Outdoor Uunit Constant Speed
Compressor1 High Discharge Temperature Compressor1 High Discharge Temperature
2
Slave1 Outdoor Unit Constant Speed
System is turned off by Slave1 Outdoor Unit Constant Speed
Compressor1 High Discharge Temperature Compressor1 High Discharge Temperature
3
Slave2 Outdoor Unit Constant Speed
System is turned off by Slave2 Outdoor Unit Constant Speed
Compressor1 High Discharge Temperature Compressor1 High Discharge Temperature
4
Slave3 Outdoor Unit Constant Speed
System is turned off by Slave3 Outdoor Unit Constant Speed
Compressor1 High Discharge Temperature Compressor1 High Discharge Temperature
0
2
3
High Pressure of Master Outdoor Unit
System is turned off by excessive increase of high pressure of
Master Outdoor Unit
High Pressure of Slave1 Outdoor Unit
System is turned off by excessive increase of high pressure of
Slave1 Outdoor Unit
High Pressure of Slave2 Outdoor Unit
System is turned off by excessive increase of high pressure of
Slave2 Outdoor Unit
High Pressure of Slave3 Outdoor Unit
System is turned off by excessive increase of high pressure of
Slave3 Outdoor Unit
Low Pressure of Master Outdoor Unit
System is turned off by excessive decrease of low pressure of
Master Outdoor Unit
Low Pressure of Slave1 Outdoor Unit
System is turned off by excessive decrease of low pressure of
Slave1 Outdoor Unit
Low Pressure of Slave2 Outdoor Unit
System is turned off by excessive decrease of low pressure of
Slave2 Outdoor Unit
Low Pressure of Slave3 Outdoor Unit
System is turned off by excessive decrease of low pressure of
Slave3 Outdoor Unit
1
Master Outdoor Unit Low Condensing
Ratio Limited
Master Outdoor Unit stayed under low condensing limit for 3
minutes
2
Slave1 Outdoor Unit Low Condensing
Ratio Limited
Slave1 Outdoor Unit stayed under low condensing limit for 3
minutes
3
Slave2 Outdoor Unit Low Condensing
Ratio Limited
Slave2 Outdoor Unit stayed under low condensing limit for 3
minutes
4
Slave3 Outdoor Unit Low Condensing
Ratio Limited
Slave3 Outdoor Unit stayed under low condensing limit for 3
minutes
1
2
3
4
3
4
1
2
3
5
3
4
3
100
6
Outdoor Unit
Test Run
Display
Outdoor unit related error
4
4
4
4
0
1
2
3
4
Cause of Error
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
Slave3 Outdoor Unit Inverter
4 Compressor CT Sensor Fault
Slave3 Outdoor Unit Inverter Compressor CT Sensor
open or short
Master Outdoor Unit Inverter
1 Compressor Discharge
Temperature Sensor Fault
Master Outdoor Unit Inverter Compressor Discharge
Temperature Sensor open or short
Slave1 Outdoor Unit Inverter
2 Compressor Discharge
Temperature Sensor Fault
Slave1 Outdoor Unit Inverter Compressor Discharge
Temperature Sensor open or short
Slave2 Outdoor Unit Inverter
3 Compressor Discharge
Temperature Sensor Fault
Slave2 Outdoor Unit Inverter Compressor Discharge
Temperature Sensor open or short
Slave3 Outdoor Unit Inverter
4 Compressor Discharge
Temperature Sensor Fault
Slave3 Outdoor Unit Inverter Compressor Discharge
Temperature Sensor open or short
1 Master Outdoor Unit Low
Pressure Sensor Fault
Master Outdoor Unit Low Pressure Sensor open or
short
2 Slave1 Outdoor Unit Low
Pressure Sensor Fault
Slave1 Outdoor Unit Low Pressure Sensor open or
short
3 Slave2 Outdoor Unit Low
Pressure Sensor Fault
Slave2 Outdoor Unit Low Pressure Sensor open or
short
4 Slave3 Outdoor Unit Low
Pressure Sensor Fault
Slave3 Outdoor Unit Low Pressure Sensor open or
short
1 Master Outdoor Unit High
Pressure Sensor Fault
Master Outdoor Unit High Pressure Sensor open or
short
2 Slave1 Outdoor Unit High
Pressure Sensor Fault
Slave1 Outdoor Unit High Pressure Sensor open or
short
3 Slave2 Outdoor Unit High
Pressure Sensor Fault
Slave2 Outdoor Unit High Pressure Sensor open or
short
4 Slave3 Outdoor Unit High
Pressure Sensor Fault
Slave3 Outdoor Unit High Pressure Sensor open or
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
Installation Manual 101
ENGLISH
4
Title
Master Outdoor Unit Inverter
1
Compressor CT Sensor Fault
Test Run
Display
4
Outdoor unit related error
4
4
4
102
5
8
Cause of Error
Master Outdoor Unit Heat Exchanger Temperature
Sensor(Front side) open or short
Slave1 Outdoor Unit Heat
2 Exchanger Temperature Sensor
(Front side) Fault
Slave1 Outdoor Unit Heat Exchanger Temperature
Sensor (Front side) open or short
Slave2 Outdoor Unit Heat
3 Exchanger Temperature Sensor
(Front side) Fault
Slave2 Outdoor Unit Heat Exchanger Temperature
Sensor(Front side) open or short
Slave3 Outdoor Unit Heat
4 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
6
7
Title
Master Outdoor Unit Heat
1 Exchanger Temperature Sensor
(Front side) Fault
Master Outdoor Unit Constant
1 Speed Compressor1 Discharge
Temperature Sensor Fault
Master Outdoor Unit Constant Speed Compressor1
Discharge Temperature Sensor open or short
Slave1 Outdoor Unit Constant
2 Speed Compressor1 Discharge
Temperature Sensor Fault
Slave1 Outdoor Unit Constant Speed Compressor1
Discharge Temperature Sensor open or short
Slave2 Outdoor Unit Constant
3 Speed Compressor1 Discharge
Temperature Sensor Fault
Slave2 Outdoor Unit Constant Speed Compressor1
Discharge Temperature Sensor open or short
Slave3 Outdoor Unit Constant
4 Speed Compressor1 Discharge
Temperature Sensor Fault
Slave3 Outdoor Unit Constant Speed Compressor1
Discharge Temperature Sensor open or short
Master Outdoor Unit Constant
1 Speed Compressor2 Discharge
Temperature Sensor Fault
Master Outdoor Unit Constant Speed Compressor 2
Discharge Temperature Sensor open or short
Slave1 Outdoor Unit Constant
2 Speed Compressor2 Discharge
Temperature Sensor Fault
Slave1 Outdoor Unit Constant Speed Compressor 2
Discharge Temperature Sensor open or short
Slave2 Outdoor Unit Constant
3 Speed Compressor2 Discharge
Temperature Sensor Fault
Slave2 Outdoor Unit Constant Speed Compressor 2
Discharge Temperature Sensor open or short
Slave3 Outdoor Unit Constant
4 Speed Compressor2 Discharge
Temperature Sensor Fault
Slave3 Outdoor Unit Constant Speed Compressor 2
Discharge Temperature Sensor open or short
Outdoor Unit
Test Run
Display
5
Outdoor unit related error
5
5
5
5
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 Master Outdoor Unit
Omitting connection of Master outdoor unit
2
Omitting connection of R, S, T
power of Slave1 Outdoor Unit
Omitting connection of Slave1 Outdoor Unit
3
Omitting connection of R, S, T
power of Slave2 Outdoor Unit
Omitting connection of Slave2 Outdoor Unit
4
Omitting connection of R, S, T
power of Slave3 Outdoor Unit
Omitting connection of Slave3 Outdoor Unit
1
Excessive capacity of indoor units Excessive connection of indoor units compared to
capacity of Outdoor Unit
1
Transmission error : inverter
PCB ’ Main PCB
Failing to receive inverter signal at main PCB of
Master Outdoor Unit
2
Transmission error : inverter
PCB ’ Main PCB
Failing to receive inverter signal at main PCB of
Slave1 Outdoor Unit
Transmission error : inverter
3 PCB ’ Main PCB
Failing to receive inverter signal at main PCB of
Slave2 Outdoor Unit
4
Transmission error : inverter
PCB ’ Main PCB
Failing to receive inverter signal at main PCB of
Slave3 Outdoor Unit
1
Transmission error : indoor unit ’ Failing to receive indoor unit signal at main PCB of
Outdoor Unit .
main PCB of Outdoor Unit
1
Reverse connection of R, S, T
power of Master Outdoor Unit
Reverse connection or omitting connection of R, S, T
power of Master Outdoor Unit
2
Reverse connection of R, S, T
power of Slave1 Outdoor Unit
Reverse connection or omitting connection of R, S, T
power of Slave1 Outdoor Unit
3
Reverse connection of R, S, T
power of Slave2 Outdoor Unit
Reverse connection or omitting connection of R, S, T
power of Slave2 Outdoor Unit
4
Reverse connection of R, S, T
power of Slave3 Outdoor Unit
Reverse connection or omitting connection of R, S, T
power of Slave3 Outdoor Unit
9
0
1
2
3
Cause of Error
Master Outdoor Unit IPM Temperature Sensor
short/open
4
Master Outdoor Unit Controller part cannot receive
Master Outdoor Unit
1 Communication Error with Inverter inverter control signals (usually happens after onboarding)
Controller
Slave1 Outdoor Unit Controller part cannot receive
Slave1 Outdoor Unit
2 Communication Error with Inverter inverter control signals (usually happens after onboarding)
Controller
5
7
Slave2 Outdoor Unit Controller part cannot receive
Slave2 Outdoor Unit
3 Communication Error with Inverter inverter control signals (usually happens after onboarding)
Controller
Slave3 Outdoor Unit Controller part cannot receive
Slave3 Outdoor Unit
4 Communication Error with Inverter inverter control signals (usually happens after onboarding)
Controller
5
9
1
Error of series installation
In the case of installing smaller outdoor unit as master
unit
Installation Manual 103
ENGLISH
4
Title
Master Outdoor Unit Faulty IPM
1
Temperature Sensor
Test Run
Display
6
6
Outdoor unit related error
6
7
7
7
104
Title
1
Access Error of Inverter PCB of Master Outdoor 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
0
7
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
Constant1 CT Sensor open or short of Master Outdoor
Unit
2
Constant1 CT Sensor Error of
Slave1 Outdoor Unit
Constant1 CT Sensor open or short of Slave1 Outdoor
Unit
3
Constant1 CT Sensor Error of
Slave2 Outdoor Unit
Constant1 CT Sensor open or short of Slave2 Outdoor
Unit
4
Constant1 CT Sensor Error of
Slave3 Outdoor Unit
Constant1 CT Sensor open or short of Slave3 Outdoor
Unit
1
Constant2 CT Sensor Error of
Master Outdoor Unit
Constant2 CT Sensor open or short of Master Outdoor
Unit
2
Constant2 CT Sensor Error of
Slave1 Outdoor Unit
Constant2 CT Sensor open or short of Slave1 Outdoor
Unit
3
Constant2 CT Sensor Error of
Slave2 Outdoor Unit
Constant2 CT Sensor open or short of Slave2 Outdoor
Unit
4
Constant2 CT Sensor Error of
Slave3 Outdoor Unit
Constant2 CT Sensor open or short of Slave3 Outdoor
Unit
0
5
Restriction of Slave3 Outdoor Unit
Constant1 CT Sensor Error of
1
Master Outdoor Unit
9
3
Cause of Error
Inverter PCB EEPROM Error of
Master Outdoor Unit
1 Instant Over Current(Peak) of
Master Outdoor Unit PFC
Instant Over Current(Peak) of Master Outdoor Unit
PFC
2 Instant Over Current(Peak) of
Slave1 Outdoor Unit PFC
Instant Over Current(Peak) of Slave1 Outdoor Unit
PFC
3 Instant Over Current(Peak) of
Slave2 Outdoor Unit PFC
Instant Over Current(Peak) of Slave2 Outdoor Unit
PFC
4 Instant Over Current(Peak) of
Slave3 Outdoor Unit PFC
Instant Over Current(Peak) of Slave3 Outdoor Unit
PFC
Master Outdoor Unit Fan CT
1 Sensor Error
Master Outdoor Unit Fan CT Sensor open or short
Slave1 Outdoor Unit Fan CT
2 Sensor Error
Slave1 Outdoor Unit Fan CT Sensor open or short
Slave2 Outdoor Unit Fan CT
3 Sensor Error
Slave2 Outdoor Unit Fan CT Sensor open or short
Slave3 Outdoor Unit Fan CT
4 Sensor Error
Slave3 Outdoor Unit Fan CT Sensor open or short
Outdoor Unit
Test Run
Display
Outdoor unit related error
7
7
8
8
Cause of 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
6
1
Master Outdoor Unit Fan Over
Current Error
Master Outdoor Unit Fan Current is over 5A
2
Slave1 Outdoor Unit Fan Over
Current Error
Slave1 Outdoor Unit Fan is over 5A
3
Slave2 Outdoor Unit Fan Over
Current Error
Slave2 Outdoor Unit Fan is over 5A
4
Slave3 Outdoor Unit Fan Over
Current Error
Slave3 Outdoor Unit Fan 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 Error
Communication Fail Between Master Outdoor Unit
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
9
6
7
Installation Manual 105
ENGLISH
7
Title
Master Outdoor Unit Fan DC Link
1 High Voltage Error
Test Run
Display
1 0 4
Title
Failing to receive Slave Unit signal at main PCB of
Master Outdoor Unit
Communication Error Between
2 Slave1 Outdoor Unit and Other
Outdoor Unit
Failing to receive master and other Slave Unit signal
at main PCB of Slave1 Outdoor Unit
Communication Error Between
3 Slave2 Outdoor Unit and Other
Outdoor Unit
Failing to receive master and other Slave Unit signal
at main PCB of Slave2 Outdoor Unit
Communication Error Between
4 Slave3 Outdoor Unit and Other
Outdoor Unit
Failing to receive master and other Slave Unit signal
at main PCB of Slave3 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 Uni 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
Outdoor unit related error
1 0 5
1 0 6
1 0 7
1 1 3
106
Cause of Error
Communication Error Between
1 Master Outdoor Unit and Other
Outdoor Unit
Outdoor Unit
Test Run
Display
Title
2
Slave1 Outdoor Unit Subcooling
Outlet Temperature Sensor Error
Slave1 Outdoor Unit Subcooling Outlet Temperature
Sensor open or short
3
Slave2 Outdoor Unit Subcooling
Outlet Temperature Sensor Error
Slave2 Outdoor Unit Subcooling Outlet Temperature
Sensor open or short
4
Slave3 Outdoor Unit Subcooling
Outlet Temperature Sensor Error
Slave3 Outdoor Unit Subcooling Outlet Temperature
Sensor open or short
1
Failure of operation mode
Pressure unbalance between Outdoor Units
conversion at Master Outdoor Unit
2
Failure of operation mode
Pressure unbalance between Outdoor Units
conversion at Slave1 Outdoor Unit
3
Failure of operation mode
Pressure unbalance between Outdoor Units
conversion at Slave2 Outdoor Unit
4
Failure of operation mode
Pressure unbalance between Outdoor Units
conversion at Slave3 Outdoor Unit
1
Master upper part heat exchanger Master Outdoor Unit upper part temperature sensor
temperature sensor error
open/short
2
Slave1 upper part heat exchanger Slave1 Outdoor Unit upper part temperature sensor
temperature sensor error
open/short
3
Slave2 upper part heat exchanger Slave2 Outdoor Unit upper part temperature sensor
temperature sensor error
open/short
4
Slave3 upper part heat exchanger Slave3 Outdoor Unit upper part temperature sensor
temperature sensor error
open/short
1
Master lower part heat exchanger
temperature sensor error
Master Outdoor Unit lower part temperature sensor
open/short
2
Slave1 lower part heat exchanger
temperature sensor error
Slave1 Outdoor Unit lower part temperature sensor
open/short
3
Slave2 lower part heat exchanger
temperature sensor error
Slave2 Outdoor Unit lower part temperature sensor
open/short
4
Slave3 lower part heat exchanger
temperature sensor error
Slave3 Outdoor Unit lower part temperature sensor
open/short
1
Master Outdoor Unit Constant
Speed Compressor Fault
Comp locking, Check Valve leakage, comp dielectric
break down at Master Outdoor Unit
2
Slave1 Outdoor Unit Constant
Speed Compressor Fault
Comp locking, Check Valve leakage, comp dielectric
at Slave1 Outdoor Unit
3
Slave2 Outdoor Unit Constant
Speed Compressor Fault
Comp locking, Check Valve leakage, comp dielectric
at Slave2 Outdoor Unit
4
Slave3 Outdoor Unit Constant
Speed Compressor Fault
Comp locking, Check Valve leakage, comp dielectric
at Slave3 Outdoor Unit
1
Master outdoor unit rated speed 2 Master Outdoor Unit rated speed 2 condenser burned
condenser over-current
/ locked or fault by over-current
2
Slave1 outdoor unit rated speed 2 Slave1 Outdoor Unit rated speed 2 condenser burned
condenser over-current
/ locked or fault by over-current
3
Slave2 outdoor unit rated speed 2 Slave2 Outdoor Unit rated speed 2 condenser burned
condenser over-current
/ locked or fault by over-current
4
Slave3 outdoor unit rated speed 2 Slave3 Outdoor Unit rated speed 2 condenser burned
condenser over-current
/ locked or fault by over-current
1 5 1
1 5 3
1 5 4
1 7 3
1 7 4
Installation Manual 107
ENGLISH
Master Outdoor Unit Subcooling Outlet Temperature
Sensor open or short
1 1 5
Outdoor unit related error
Cause of Error
Master Outdoor Unit Subcooling
1
Outlet Temperature Sensor Error
Test Run
Display
Title
Cause of Error
1
Master outdoor unit Main Board MainSub Micom communication error
Master Outdoor Unit Main Board Main-Sub Micom
communication failed
2
Slave1 outdoor unit Main Board MainSub Micom communication error
Slave1 Outdoor Unit Main Board Main-Sub Micom
communication failed
3
Slave2 outdoor unit Main Board MainSub Micom communication error
Slave2 Outdoor Unit Main Board Main-Sub Micom
communication failed
4
Slave3 outdoor unit Main Board MainSub Micom communication error
Slave3 Outdoor Unit Main Board Main-Sub Micom
communication failed
1
Master Inv. oil equalizing pipe
Temperature Sensor error
Master Outdoor Unit oil equalizing temperature Sensor
open or short
2
Slave1 Inv. oil equalizing pipe
Temperature Sensor error
Slave1 Outdoor Unit oil equalizing temperature Sensor
open or short
3
Slave2 Inv. oil equalizing pipe
Temperature Sensor error
Slave2 Outdoor Unit oil equalizing temperature Sensor
open or short
4
Slave3 Inv. oil equalizing pipe
Temperature Sensor error
Slave3 Outdoor Unit oil equalizing temperature Sensor
open or short
1
Master const.1 oil equalizing pipe
Temperature Sensor error
Master Outdoor Unit oil equalizing temperature Sensor
open or short
2
Slave1 const.1 oil equalizing pipe
Temperature Sensor error
Slave1 Outdoor Unit oil equalizing temperature Sensor
open or short
3
Slave2 const.1 oil equalizing pipe
Temperature Sensor error
Slave2 Outdoor Unit oil equalizing temperature Sensor
open or short
4
Slave3 const.1 oil equalizing pipe
Temperature Sensor error
Slave3 Outdoor Unit oil equalizing temperature Sensor
open or short
1
Master const.2 oil equalizing pipe
Temperature Sensor error
Master Outdoor Unit oil equalizing temperature Sensor
open or short
2
Slave1 const.2 oil equalizing pipe
Temperature Sensor error
Slave1 Outdoor Unit oil equalizing temperature Sensor
open or short
3
Slave2 const.2 oil equalizing pipe
Temperature Sensor error
Slave2 Outdoor Unit oil equalizing temperature Sensor
open or short
4
Slave3 const.2 oil equalizing pipe
Temperature Sensor error
Slave3 Outdoor Unit oil equalizing temperature Sensor
open or short
1
Excessive increase of Master Outdoor
Unit Fan PCB Heat Sink Temperature
Master Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
2
Excessive increase of Slave1 Outdoor
Unit Fan PCB Heat Sink Temperature
Slave1 Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
3
Excessive increase of Slave2 Outdoor
Unit Fan PCB Heat Sink Temperature
Slave2 Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
4
Excessive increase of Slave3 Outdoor
Unit Fan PCB Heat Sink Temperature
Slave3 Outdoor Unit Fan Inverter PCB Temperature is
Over 95°C
1
Master Outdoor Unit Fan PCB Heat Sink
Temperature Sensor Error
Master Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
2
Slave1 Outdoor Unit Fan PCB Heat Sink
Temperature Sensor Error
Slave1 Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
3
Slave2 Outdoor Unit Fan PCB Heat Sink
Temperature Sensor Error
Slave2 Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
4
Slave3 Outdoor Unit Fan PCB Heat Sink
Temperature Sensor Error
Slave3 Outdoor Unit Fan PCB Heat Sink Temperature
Sensor open or short
1 8 2
Outdoor unit related error
1 8 4
1 8 5
1 8 6
1 9 3
1 9 4
108
Outdoor Unit
New Function
n Multi V III provides as following new functions.
New Function
Cool/Heat selector (PRDSBM)
Cooling/ Heating/ Fan
Cooling/ Heating/ All OFF
Demand control
-. Low load operation
-. DDC control (DC0~10V Input)
ODU Dry contact (PQDSBDCVM0)
Independent Power module
ODU Fan Low speed control
(Night low noise operation)
Error alarm
Independent power module
Applied item
ODU
Solution Accessory
ODU
Solution Accessory
Solution Accessory (ʼ11.01 available)
h If you want to get more details, refer to each installation Manuals.
n Out Feature
• Cool/ Heat Selector
Installation Manual 109
ENGLISH
New Function
New Function
1 Cool/ Heat selector
1.1 Cool/ Heat Selector has provided two different functions.
- Cooling/ heating/ Fan lock mode
- Cooling/ heating/ All OFF mode
[Installation]
1. Check the contents of Cool/ Heat Selector
<Outdoor Dry Contact Main Body>
<Front Case>
2. Connect Outdoor Main PCB and Cool/ Heat Selector.
-. Connect terminals on the back side of Cool/Heat Selector to terminal of Outdoor as show
Push Button
- Insert wire method -
¨≠GND
< Outdoor Main PCB >
3
1
4
2
Push arrow direction.
¨
≠
GND
3
1
4
2
shows field wiring
connected wiring
Insert wire to connector.
<Outdoor Dry Contact Back Side >
❈ Communication line length can be maximum 300m, use communication line as thick as 1.25mm2.
110
Outdoor Unit
New Function
1.2 ODU Dry contact
ENGLISH
ODU Dry contact has provided Three different functions.
- Demand control
- Night Low Noise control
- Error Alarm Monitoring function
[ODU Dry contact]
- Feature and Parts Naming
1
2
3
4
5
15
14
13
12
6
7
8
11
10
9
1. SWDIP : Switch to select main function
2. SW_Address2 : Switch to set a upper
address of the outdoor unit
3. SW_Address1 : Switch to set a lower
address of the outdoor unit
4. SW_STEP : Switch to select a control mode.
5. CN_PWR : DC Input terminal
6. ERROR : Error display with relay contact
7. BUS-A : RS-485 (+) Terminal
8. BUS-B : RS-485 (-) Terminal
9. CN_CAPACITY : Signal input terminal to
control a capacity of outdoor unit
10. CN_SPEED/CAP : Signal input terminal for
Analog Input/Low noise operation
11. CN_OUT : Outdoor unit connector
12. LED1 : Display LED for RS-485 status
13. LED01G,02G,03G : Display LED for communication status
14. CN_JIG : Connector for writing program
15. SW1 : Reset switch
- Installation
1. ODU Dry contact single installation : Connect with ODU both single Unit and Series.
RS-485
BUS_A
BUS_B
Installation Manual 111
New Function
2. ODU Dry contact with Central controller
: With Single Outdoor unit
Multi-V
WIRE ASSY 1(1EA)
CN_OUT
TTL
: With Series Outdoor units
Multi-V
WIRE ASSY 1(1EA)
Central
Control
Devices
CN_OUT
112
TTL
Outdoor Unit
BUS_A
BUS_B
New Function
2 New Dry contact
ENGLISH
2.1 Demand Control
ODU Dry contact has provided Two different methods for Demand control
- Using Contact signal
: High/ Low pressure value s are changed by setting value of Rotary S/W
- Using Analog signal with DDC Module
: High/ Low pressure value s are changed by setting value of DDC Module.(DC 0~10V)
[Rotary S/W setting ]
SW_STEP
0, 1, 2, 3, 4, 5, 6
D, E
Input Signal
Contact signal
Analog signal
[Setting ]
SW_STEP
Using Contact signal
Using Analog signal with DDC Module
- Each connecting methods
1. Using Contact signal
<Without External power source>
SW_VOLT2
<With External power source>
SW_VOLT2
SW_VOLT1
SW_VOLT1
Notes
LG does not
supply this section
(Field supply)
Connect separate
External voltage of
DC12V
Input_3
Input_2
Input_1
comm
Input_LNO
comm
Input_3
Input_2
Input_1
comm
Input_LNO
comm
Do not input the voltage signal in
"NON VOLT" setting mode otherwise
it will cause serious damage
LG does not
supply this section
(Field supply)
Installation Manual 113
New Function
2. Using Analog signal with DDC Module
SW_VOLT2
SW_VOLT1
DC 0~10V
input
GND
Direct Digital Controller
[Control Value]
- Using Contact signal
D
0
1
2
3
4
5
6
7
8
9
10
Rotary
S/W
E
114
Volt
0
1
2
3
4
5
6
7
8
9
10
Step
0
1
2
3
4
5
6
7
8
9
10
Cooling
Control
Not-Control
100%
90%
80%
70%
60%
50%
45%
40%
Comp OFF
All OFF
Step
0
0
0
0
00
0
0
0
0
0
0
Heating
Control
Not-Control
100%
90%
80%
70%
60%
50%
45%
40%
Comp OFF
All OFF
Step
9
8
7
6
5
4
3
2
1
1
1
Cooling
Control
Comp OFF
40%
45%
52%
60%
70%
80%
90%
100%
100%
100%
Step
0
0
0
0
00
0
0
0
0
0
0
Heating
Control
Comp OFF
40%
45%
50%
60%
70%
80%
90%
100%
100%
100%
Outdoor Unit
100%
Performance output of the ODU
Volt
90%
80%
70%
60%
50%
45%
40%
Comp.
OFF
Non
Control
Signal
Input
Step
0V
0
1V
1
2V
2
3V
3
4V
4
5V
5
6V
6
7V
7
8V
8
9V
9
10V
10
2V
7
3V
6
4V
5
5V
4
6V
3
7V
2
8V
1
9V
1
10V
1
100%
Performance output of the ODU
Rotary
S/W
90%
80%
70%
60%
50%
45%
40%
Signal
Input
Step
Non
Control
0V
9
1V
8
System
OFF
New Function
- Using Analog signal with DDC Module
1
2
3
4
5
6
Input_2
Input_3
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
Comp capacity
Of outdoor unit(%)
No control
70
40
COMP OFF
No control
70
50
COMP OFF
No control
80
50
COMP OFF
No control
70
40
ALL OFF
No control
70
50
ALL OFF
No control
80
50
ALL OFF
No control
50
COMP OFF
ALL OFF
100%
Performance output of the ODU
0
Input_1
ENGLISH
SW_
STEP
90%
80%
70%
60%
50%
45%
40%
Signal
Input
Step
Comp.
OFF
Non
Control
0V
0
1V
1
2V
2
3V
3
4V
4
5V
5
6V
6
7V
7
8V
8
9V
9
System
OFF
10V
10
Installation Manual 115
New Function
2.2 Night Low Noise control
ODU Dry contact has provided Two methods for Night Low Noise Control
- Automatically operating
: Using previous method
- Manual operating
: Using simple switch and timer
[Setting]
- For ODU Dry contact
ON
Position
L1 2 3 4
ON
L1 2 3 4
Notes
L1 2 3 4
OFF : Disable Low Noise
Operation
- For Outdoor unit
Refer to DIP S/W setting table
11.2.3 Error Alarm monitoring
ODU Dry contact has provided Error Alarm monitoring function
Notice for system fault information by buzzer or warning lamp.
Occurring fault is not only ODUs but also IDUs.
[Setting]
Field Supply
Power
AC or DC
(Depends on Operation
display power type)
116
Outdoor Unit
OFF : Slave Mode
ON : Enable Low Noise
Operation
Connect with S/W or Timer for
Night Low Noise Control
- Note
AC Power : 3A @250V
DC Power : 3A @30Vv
ON : Master Mode
ON
Default State is L1: ON, L2: ON
Error Display
Function
New Function
3 Independent power module
Concept of independent
power module
3 phase
400V
“ If the power Cut-off, then product need to close EEV.”
ODU
1 phase
220V
4th
independent power module (option)
…
Switch BOX
3rd
power
Plug
2nd
Main
Switch
A/C
Switch
1st
Each room
independent power module (option)
Switch BOX
power
Plug
3rd
Main
Switch
2nd
A/C
Switch
1st
Each room
Installation Manual 117
ENGLISH
The main PCB controls the EEV kit when the power is turn on.
The independent sub PCB controls the EEV kit when the power is turn off.
Caution For Refrigerant Leak
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.
n 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.
n Calculate amount of all the replenished refrigerant (kg) per each refrigerant
system.
Amount of replenished
refrigerant per one outdoor
unit system
+
Amount of replenished
refrigerant at factory shipment
Amount of additional
=
replenished refrigerant
Total amount of replenished
refrigerant in refrigerant
facility (kg)
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.
Amount of additionally
replenished refrigerant
depending on piping
length or piping
diameter at customer
n Calculate minimum room capacity
Calculate room capacity by regarding a portion as one room or the smaller room.
(1) Without partition
(2) With partition and with opening which serve as
passage of air to adjoining room
Outdoor unit
Outdoor unit
Indoor unit
Indoor unit
Opening
Partition
118
Outdoor Unit
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
(3) With partition and without opening which serve as passage of air to adjoining room
Indoor unit
Smallest
room
n Calculate refrigerant concentration
Total amount of replenished
refrigerant in refrigerant facility (kg)
= Refrigerant concentration
Capacity of smallest room where
indoor unit is installed (m3)
(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.
n 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.
Installation Manual 119
ENGLISH
Outdoor unit
Installation guide at the seaside
Installation guide at the seaside
CAUTION
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. 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.
3. 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)
1) 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
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
Windbreak
• 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.
Sea wind
• It should be keep more than 70 cm of space
between outdoor unit and the windbreak for easy
air flow.
3) Select a well-drained place.
1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
120
Outdoor Unit