LG ARUM160LTE5.EWGBLEU Installation guide

LG ARUM160LTE5.EWGBLEU Installation guide
ENGLISH РУССКИЙ ЯЗЫК УКРАÏНСЬКА
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.
For Heat Pump / Heat Recovery system
Original instruction
MFL68124509
Rev.01_041319
www.lg.com
Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved.
2
ENGLISH
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption
when you use the air conditioner. You can use your air conditioner
more efficiently by referring to the instructions below:
• Do not cool excessively indoors. This may be harmful for your health
and may consume more electricity.
• Block sunlight with blinds or curtains while you are operating the air
conditioner.
• Keep doors or windows closed tightly while you are operating the air
conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate
indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period
of time.
• Open windows regularly for ventilation as the indoor air quality may
deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected
in the air filter may block the air flow or weaken the cooling /
dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of
purchase or for warranty purposes. Write the model number and the
serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
IMPORTANT SAFETY
INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE
APPLIANCE.
Always comply with the following precautions to avoid dangerous
situations and ensure peak performance of your product.
!
WARNING
Installation
• Have all electric work done by a licensed electrician according to
"Electric Facility Engineering Standard" and "Interior Wire
Regulations" and the instructions given in this manual and always
use a special circuit.
- If the power source capacity is inadequate or electric work is
performed improperly, electric shock or fire may result.
• Ask the dealer or an authorized technician to install the air
conditioner.
- Improper installation by the user may result in water leakage,
electric shock, or fire.
• Always ground the product.
- There is risk of fire or electric shock.
• Always intstall a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• For re-installation of the installed product, always contact a dealer
or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• Do not store or use flammable gas or combustibles near the air
conditioner.
- There is risk of fire or failure of product.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Prepare for strong wind or earthquake and install the unit at the
specified place.
- Improper installation may cause the unit to topple and result in
injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
• Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
• 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.
It can result in serious injury or death when the directions are ignored.
!
CAUTION
It can result in minor injury or product damage when the directions are
ignored.
!
WARNING
• Installation or repairs made by unqualified persons can result in
hazards to you and others.
• The information contained in the manual is intended for use by a
qualified service technician familiar with safety procedures and
equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can
result in equipment malfunction, property damage, personal injury
and/or death.
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.
3
!
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or repair
of product.
- Low refrigerant levels may cause failure of product.
• Do not install the product where the noise or hot air from the
outdoor unit could damage the neighborhoods.
- It may cause a problem for your neighbors.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion
may result.
• Use power cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a
fire.
• Do not use the product for special purposes, such as preserving
foods, works of art, etc. It is a consumer air conditioner, not a
precision refrigeration system.
- There is risk of damage or loss of property.
• Keep the unit away from children. The heat exchanger is very
sharp.
- It can cause the injury, such as cutting the finger. Also the
damaged fin may result in degradation of capacity.
• When installting the unit in a hospital, communication station, or
similar place, provide sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency
medical equipment, or radio communication equipment may cause
the air conditioner to operate erroneously, or fail to operate. On
the other hand, the air conditioner may affect such equipment by
creating noise that disturbs medical treatment or image
broadcasting.
• Do not install the product where it is exposed to sea wind (salt
spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on
the condenser and evaporator fins, could cause product
malfunction or inefficient operation.
• Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.
Operation
• Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the
performance of the air conditioner or damage its parts.
• Do not block the inlet or outlet.
- It may cause failure of appliance or accident.
• Make the connections securely so that the outside force of the
cable may not be applied to the terminals.
- Inadequate connection and fastening may generate heat and
cause a fire.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it, causing
property damage, product failure, or personal injury.
• Install and insulate the drain hose to ensure that water is drained
away properly based on the installation manual.
- A bad connection may cause water leakage.
• Be very careful about product transportation.
- Only one person should not carry the product if it weighs more
than 20 kg.
- Some products use PP bands for packaging. Do not use any PP
bands for a means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your
fingers.
- When transporting the outdoor unit, suspending it at the specified
positions on the unit base. Also support the outdoor unit at four
points so that it cannot slip sideways.
• Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts,
may cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children
may not play with them. If children play with a plastic bag which
was not torn apart, they face the risk of suffocation.
• Turn on the power at least 6 hours before starting operation.
- Starting operation immediately after turning on the main power
switch can result in severe damage to internal parts. Keep the
power switch turned on during the operational season.
• Do not touch any of the refrigerant piping during and after
operation.
- It can cause a burn or frostbite.
• Do not operate the air conditioner with the panels or guards
removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not directly turn off the main power switch after stopping
operation.
- Wait at least 5 minutes before turning off the main power switch.
Otherwise it may result in water leakage or other problems.
• Auto-addressing should be done in condition of connecting the
power of all indoor and outdoour units. Auto-addressing should also
be done in case of changing the indoor unit PCB.
• Use a firm stool or ladder when cleaning or maintaining the air
conditioner.
- Be careful and avoid personal injury.
• Do not insert hands or other objects through the air inlet or outlet
while the air conditioner is plugged in.
- There are sharp and moving parts that could cause personal injury.
ENGLISH
• 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.
4
ENGLISH
TABLE OF CONTENTS
2
2
5
5
5
5
7
TIPS FOR SAVING ENERGY
IMPORTANT SAFETY INSTRUCTIONS
INSTALLATION PROCESS
OUTDOOR UNITS INFORMATION
ALTERNATIVE REFRIGERANT R410A
SELECT THE BEST LOCATION
INSTALLATION SPACE
7
Individual Installation
7
8
LIFTING METHOD
INSTALLATION
8
8
9
10
The location of the Anchor bolts
Foundation for Installation
Preparation of Piping
Plumbing materials and storage methods
11 REFRIGERANT PIPING INSTALLATION
[For Heat Pump System Installation]
11
Precautions on Pipe connection / Valve operation
11
Connection of Outdoor units
[For Heat Recovery System Installation]
13
Precautions on Pipe connection / Valve operation
13
Connection of Outdoor units
13
Installation procedure for HR unit
14
Installation of Outdoor Unit, HR Unit, Indoor Unit Refrigerant
Pipe
14
Type of HR Unit
14
Installation of Zoning Control
16 PIPE CONNECTIONS BETWEEN INDOOR
AND OUTDOOR UNIT
[For Heat Pump System Installation]
16
Preparation Work
16
Pipe Drawing Out during Single / Series connection
17
Refrigerant piping system
18
Pipe Connection Method between outdoor unit/indoor unit
21
Branch pipe Fitting
22
Distribution Method
23
Vacuum Mode
23
Leak Test and Vacuum drying
25
Refrigerant charging
26
Thermal insulation of refrigerant piping
[For Heat Recovery System Installation]
27
Preparation Work
27
Pipe Drawing Out during Single / Series connection
28
Refrigerant piping system
30 ELECTRICAL WIRING
32
32
33
33
33
35
36
38
38
39
40
40
40
41
41
41
41
41
42
43
43
43
43
Control box and connecting position of wiring
Communication and Power Cables
Wiring of main power supply and equipment capacity
Point for attention regarding quality of the public electric power
supply
Field Wiring
Checking the setting of outdoor units
Switch for setup of HR Unit
Automatic Addressing
The Procedure of Automatic Addressing
Flow chart of auto pipe detection process
Flow chart of manual addressing for pipe detection
Example of manual valve addressing (Non-Zoning setting)
Example of manual valve addressing (Zoning setting)
Example of checking valve address
Identification of Manual Valve ID (Address)
Method of checking the pipe detection result at outdoor unit
Setting method of Master indoor unit in zoning
Group Number setting
Cool & Heat selector
High Static Pressure Compensation mode
Night Low Noise Function
Overall defrost mode
Setting the ODU address
44
44
44
44
45
45
45
45
46
46
46
46
47
47
47
47
48
Snow removal & rapid defrost
Setting Capacity Up Airflow Adjusting for IDU (Heating)
Target pressure adjusting
Low Ambient Kit
High Efficiency Mode (Cooling Operation)
Auto Dust Removal Mode
Compressor Max. Frequency Limit
ODU Fan Max. RPM Limit
SLC (Smart Load Control)
Humidity Reference
Central Control Connection at Indoor Unit side
Compressor Input Current Limit
Power Consumption Display on wired remote controller
Overall Defrost Operating in Low temperature (Heating)
Base pan Heater operation
Comfort Cooling operation
Self-Diagnosis Function
51 CAUTION FOR REFRIGERANT LEAK
51
51
Introduction
Checking procedure of limiting concentration
52 INSTALLATION GUIDE AT THE SEASIDE
52
52
Model Designation
Airborne Noise Emission
5
Determination of division work
Preparation of contract drawings
Sleeve and insert work
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
OUTDOOR UNITS INFORMATION
!
Combination Ratio(50~200 %)
Outdoor Number
Single outdoor units
Double outdoor units
Triple outdoor units
Over the triple unit
Outdoor unit foundation work
The foundation must be level even
Installation of indoor unit
Check model name to
make sure the fitting
is made correctly
Special attention to dryness,
cleanness and tightness
Drain pipe work
Adjust to downward gradient
Duct work
Make sure airflow is sufficient
Heat insulation work
Electrical work
(connection circuits and drive circuits)
Airtight test
Vacuum drying
Make sure no gaps are left where
the insulating materials are joined
Multiple core cable must not be used.
(suitable cable should be selected)
In the final check for 24 hours at 3.8 MPa (38.7 kgf/cm2)[551.1 psi]
there must be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least
5 torr, more than 1 hour
Additional charge of refrigerant
Recharge correctly as calculated in this manual. and record the
amount of added refrigerant
Fit facing panels
Make sure there are no gaps left between the facing materials
used on the ceiling
Automatic addressing of indoor unit
Test run adjustment
Transfer to customer with explanation
!
Connection Ratio
200 %
160 %
130 %
130 %
Installation of outdoor unit
Avoid short circuits and ensure
sufficient space is allowed for service
Refrigerant piping work
CAUTION
Refer to automatic addressing flowchart
Preheat the crank case with the electrical heater for more than 6 hours.
Run each indoor unit in turn to make sure the pipe work
has been fitted correctly
Explain the use of the system as clearly as possible to your customer and
make sure all relevant documentation is in order
CAUTION
• The above list indicates the order in which the individual work
operations are normally carried out but this order may be varied
where local conditions warrants such change.
• The thickness of the piping should comply with the relevant
local and national regulations for the designed pressure 3.8 MPa
(551.1 psi).
• 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.)
Notes : * We can guarantee the operation only within 130 %
combination. If you want to connect more than 130 %
combination, please contact us and discuss the
requirement like below.
• If the operation of indoor unit is more than 130 %, the airflow
is operated as low in the all indoor units.
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 also be
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.
!
CAUTION
• The wall thickness of the piping should comply with the relevant
local and national regulations for the designed pressure 3.8 MPa
[551.1 psi]
• 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 due to noise of unit
• No exposition to strong wind
• With strength which bears weight of unit
• Note that drain flows out of unit when heating
• Because of the possibility of fire, do not install unit to the space
where generation, inflow, stagnation, and leakage of combustible gas
is expected.
ENGLISH
INSTALLATION PROCESS
6
• Do not use unit under any special environment where oil, steam and
sulfuric gas exist.
More than 100 (3-15/16)
(Servicing space)
• 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.
More than
300 (11-13/16)
More than
300 (11-13/16)
(Servicing space)
(Servicing space)
• Select installation location considering following conditions to avoid
bad condition when additionally performing defrost operation.
- Install the outdoor unit at a place well ventilated and having a lot of
sunshine in case of installing the product at a place With a high
humidity in winter (near beach, coast, lake, etc.)
(Ex : Rooftop where there is always sunshine.)
More than 100 (3-15/16)
(Servicing space)
More than
300 (11-13/16)
(Servicing space)
Select installation location of the HR unit suitable for following
conditions
- Avoid a place where rain may enter since the HR unit is for indoor.
- Sufficient service space must be obtained.
- Refrigerant pipe must not exceed limited length.
- Avoid a place subject to a strong radiation heat from other heat
source.
- Avoid a place where oil spattering, vapor spray or high frequency
electric noise is expected.
- Install the unit at a place in which it is not affected by operation noise.
(Installation within cell such as meeting room etc. may disturb
business due to noise.)
- Place where refrigerant piping, drain piping and electrical wiring
works are easy.
61
(2-13/32)
345 (13-19/32)
137
(5-13/32)
Description
Part Name
PRHR042, PRHR042A
PRHR022, PRHR022A
PRHR032, PRHR032A
1
Low pressure Gas
Ø 28.58 (1-1/8)
pipe connection port Brazing connection
Ø 22.2 (7/8) Brazing
connection
2
High pressure Gas
Ø 22.2 (7/8) Brazing
pipe connection port connection
Ø 19.05 (3/4) Brazing
connection
3
Liquid pipe
connection port
Ø 15.88 (5/8) Brazing
connection (PRHR042,
PRHR042A)
Ø 9.52 (3/8) Brazing
connection
Ø 12.7 (1/2) Brazing
connection (PRHR032,
PRHR032A)
3
450 (17-23/32)
419 (16-1/2)
5
■ Unit: mm(inch)
2
Inspection door
(servicing space)
4
128 (5-1/32)
6
481 (18-15/16)
1
(Servicing space)
124 (4-7/8)
No.
7
More than
450 (17-23/32)
30
60
(1-3/16) (2-3/8)
For Heat Recovery Installation
4
Indoor unit Gas pipe Ø 15.88 (5/8) Brazing Ø 15.88 (5/8) Brazing
connection port
connection
connection
5
Indoor unit Liquid
Ø 9.52 (3/8) Brazing
pipe connection port connection
Ø 9.52 (3/8) Brazing
connection
6 Control box
-
-
7 Hanger metal
M10 or M8
M10 or M8
450 (17-23/32)
182
(7-5/32)
218 (8-19/32)
ENGLISH
• Avoid unit installation in a place where acidic solution and spray
(sulfur) are often used.
174
(6-27/32)
453 (17-27/32)
174
(6-27/32)
More than 100 (3-15/16)
(Servicing space)
!
NOTE
• Be sure to install the inspection door at the control box side.
• If reducers are used, servicing space must be increased equal to
reducer's dimension.
7
Individual Installation
During the installation of the unit, consider service, inlet, and outlet
acquire the minimum space as shown in the figures below.
Category
Case 1
Case 2
(10 mm(13/32 inch) ≤ Side
(Side Space
Space ≤ 49 mm(13/14 inch)) ≥ 49 mm(13/14 inch))
Installation Space
b
a
c
d
Front
b
a
e
e
c
Front
d
b
4 sides
are
walls
a
e
c
f
Front
Front
d
Front
Front
b
a
e
f
c
Front
Front
d
b
c
f
d
Front
b
Front
a
Front
e
c
f
d
Front
b
Front
a
Front
Front
e
Front
e
c
f
d
Front
Front
b
Front
No limit for the
height of wall
a
Only 2
sides
are
walls
A ≥ 50 (1-31/32)
B ≥ 100 (3-15/16)
C ≥ 50 (1-31/32)
D ≥ 500(19-11/16)
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
E ≥ 20 (25/32)
A ≥ 50 (1-31/32)
B ≥ 100 (3-15/16)
C ≥ 50 (1-31/32)
D ≥ 500 (19-11/16)
E ≥ 100 (3-15/16)
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
E ≥ 20 (25/32)
F ≥ 600 (23-5/8)
A ≥ 50 (1-31/32)
B ≥ 100 (3-15/16)
C ≥ 50 (1-31/32)
D ≥ 500 (19-11/16)
E ≥ 100 (3-15/16)
F ≥ 500 (19-11/16)
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
C ≥ 10 (13/32)
D ≥ 300 (11-13/16)
E ≥ 20 (25/32)
F ≥ 500 (19-11/16)
A ≥ 50 (1-31/32)
B ≥ 100 (3-15/16)
C ≥ 50 (1-31/32)
D ≥ 100 (3-15/16)
E ≥ 100 (3-15/16)
F ≥ 500 (19-11/16)
A ≥ 10 (13/32)
B ≥ 500 (19-11/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
F ≥ 900 (35-7/16)
A ≥ 50 (1-31/32)
B ≥ 500 (19-11/16)
C ≥ 50 (1-31/32)
D ≥ 500 (19-11/16)
F ≥ 600 (23-5/8)
A ≥ 10 (13/32)
B ≥ 500 (19-11/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
E ≥ 20 (25/32)
F ≥ 1200 (47-1/4)
A ≥ 50 (1-31/32)
B ≥ 500 (19-11/16)
C ≥ 50 (1-31/32)
D ≥ 500 (19-11/16)
E ≥ 100 (3-15/16)
F ≥ 900 (35-7/16)
A ≥ 10 (13/32)
B ≥ 500 (19-11/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
E ≥ 20 (25/32)
F ≥ 1800 (70-7/8)
A ≥ 50 (1-31/32)
B ≥ 500 (19-11/16)
C ≥ 50 (1-31/32)
D ≥ 500 (19-11/16)
E ≥ 100 (3-15/16)
F ≥ 1200 (47-1/4)
Remove the Rear Grille
• Remove the rear grille in snowy area.
• Make sure that heat exchanger should not be damaged.
UXA
UXB
Rear Grille
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.
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
Front
b
a
No limit for the height of wall
e
e
A ≥ 200 (7-7/8)
B ≥ 300 (11-13/16)
E ≥ 400 (15-3/4)
500
(19-11/16’’)
Front
h2
B
Inlet
side
45° or
more
500 50050050050
500500
500
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
A
1 500 (59)
h1
Limitati
ons on
the
height
of the
wall
(Refer
to 4
side
walls)
- The height of H frame must be more than 2 times the snowfall
and its width shall not exceed the width of the product. (If width
of the frame is wider than that of the product, snow may
accumulate)
- Don't install the suction hole and discharge hole of the Outdoor
Unit facing the seasonal wind.
Front
a
Rear
to
Rear
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
Seasonal wind and cautions in winter
• Sufficient measures are required in a snow areas or severe cold
areas 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 In such a way that it should not 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 50 cm
(19.7 inch) 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 10 cm (3.9 inch), always remove snow for operation.
Front
side
240
(9-1/2’’)
or more
50 (2) or more
• The height of the wall on the front side must
be 1 500 mm (59 inch) or less.
• The height of the wall on the inlet side must
be 500 mm (19-11/16’’) or less.
• There is no limit to the wall on the side.
• If the height of the walls on the front and the
side are higher than the limit, there must be
additional space on the front and the side.
- Additional Space on the front side by 1/2 of
h1
- Additional Space on the inlet side by 1/2 of
h2
- h1 = A(Actual height) - 1 500 (59 inch)
- h2 = B(Actual height) - 500 (19-11/16’’)
Locking points for
transportation ropes
Forklift Carrying Hole
Forklift Carrying Guide
ENGLISH
INSTALLATION SPACE
8
CAUTION
Foundation for Installation
Outdoor units
should not be
supported only by
the corner supports.
m
0m
st 10 ch)
a
e
l
At /16 in
5
(3-1
mm
00
ast 1 h)
At le /16 inc 100 mm
5
ast
h)
(3-1
At le /16 inc
5
(3 1
Center of the Unit
mm
00
ast 1 inch)
e
l
t
A /16
5
(3-1
mm
00
ast 1 h)
m
At le /16 inc t 100m
5
(3-1 At leas 6 inch)
5/1
(3-1
Center of the Unit
The location of the Anchor bolts
Ⓐ 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
!
760 (29-29/32)
731 (28-25/32)
At least
At least
65 (2-9/16) 65 (2-9/16)
65
(2-9/16)
!
A [mm (inch)]
B [mm (inch)]
UXA
UXB
930 (36-5/8)
1 240 (47-1/4)
730 (28-3/4)
1 040 (40-15/16)
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 panel. Use
drainage instead for water outlet. The tube or pipe may freeze
and the water may not be drained.
Unit : mm (inch)
Chassis
200(7.87)
Unit : mm (inch)
75(2.95)
• Install at places where it can endure the weight and vibration/noise
of the outdoor unit.
• The outdoor unit support blocks at the bottom shall have width of at
least 100 mm (3-15/16 inch) under the Unit’s legs before being fixed.
• The outdoor unit support blocks should have minimum height of
200 mm (7-7/8 inch).
• Anchor bolts must be inserted at least 75 mm (2-15/16 inch).
At least
200 (7.87)
200(7.87)
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 200 mm (7-7/8 inch)).
100(3.94)
75(2.95)
Be very careful while carrying the product.
• Do not have only one person carry product if it is more than 20
kg (44 lbs).
• 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 (26.2 ft) 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.
65
(2-9/16)
ENGLISH
!
CAUTION
• Be sure to remove the Pallet(Wood Support) of the bottom side
of the outdoor unit Base panel 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
9
Main cause of gas leakage is defect in flaring work. Carry out correct
flaring work in the following procedure.
Pipe size
[mm (inch)]
Tightening Torque
N.m (lbs.ft)
A [mm (inch)]
Ø 9.52 (3/8)
38±4 (28±3.0)
12.8 (0.5)~13.2 (0.52)
Flare shape
90° ±2
45
°
A
Cut the pipes and the cable
- Use the accessory piping kit or the pipes purchased locally.
- Measure the distance between the indoor and the outdoor unit.
- Cut the pipes a little longer than measured distance.
- Cut the cable 1.5 m (4.92 ft) longer than the pipe length.
Ø 12.7 (1/2)
55±6 (41±4.4)
16.2 (0.64)~16.6 (0.65)
Ø 15.88 (5/8)
75±7 (55±5.2)
19.3 (0.76)~19.7(0.78)
R = 0.4~0.8
!
Pipe
Copper
tube
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.
Union
• 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.
Reamer
90°
±2
Slanted Uneven Rough
Point down
Burrs removal
- Completely remove all burrs from the cut cross section of pipe/tube.
- Put the end of the copper tube/pipe to downward direction as you
remove burrs in order to avoid to let burrs drop in the tubing.
Opening shutoff valve
<Wing nut type>
Bar
<Clutch type>
1 Remove the cap and turn the valve counter clockwise with the
hexagon wrench.
"A"
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.
Copper pipe
3 Make sure to tighten the cap securely.
Flaring work
- Carry out flaring work using flaring tool as shown below.
Pipe diameter
inch (mm)
Ø 1/4 (Ø 6.35)
Ø 3/8 (Ø 9.52)
Ø 1/2 (Ø 12.7)
Ø 5/8 (Ø 15.88)
Ø 3/4 (Ø 19.05)
A inch (mm)
Wing nut type
Clutch type
0.04~0.05 (1.1~1.3)
0.06~0.07 (1.5~1.7)
0~0.02
0.06~0.07 (1.6~1.8)
(0~0.5)
0.06~0.07 (1.6~1.8)
0.07~0.08 (1.9~2.1)
Firmly hold copper tube in a bar(or die) as indicated dimension in the
table above.
Check
- Compare the flared work with figure below.
- If flare is noted to be defective, cut off the flared section and do
flaring work again.
Smooth all round
Inside is shining without scratches.
= Improper flaring =
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
Shut
off
valve
size
(mm
(inch))
Tightening torque N.m (lbs.ft) (Turn clockwise to close)
Shaft
(valve body)
Closed
Opened
Cap
Service
port
Hexagonal (Valve lid)
wrench
Ø 6.35
(1/4)
6.0±0.6
Ø 9.52 (4.4±0.4)
(3/8)
4 mm
(0.16 inch)
Ø 12.7 10.0±1.0
(1/2) (7.4±0.7)
Even length
all round
Inclined Surface Cracked Uneven
damaged
thickness
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.
16±2
(12±1.5)
17.6±2.0
(13.0±1.5)
38±4
(28±3.0)
20.0±2.0
(14.8±1.5)
55±6
(41±4.4)
-
Ø 15.88 12.0±1.2
(5/8) (8.9±0.9)
Ø 19.05 14.0±1.4
(3/4) (10.3±1.0)
Flare shape and flare nut tightening torque
Gas line
piping
Flare nut attached
to unit
Ø 22.2
(7/8) 30.0±3.0
Ø 25.4 (22.1±2.2)
5.0±0.0
(3.7±0.4)
12.7±2
(9.4±1.5)
5 mm
(0.24 inch)
25.0±2.5
(18.4±1.8)
8 mm
(0.31 inch)
(1)
75±7
(55±5.1)
110±10
(81.1±7.4)
25±3
(18.5±2.2)
Insulation of shutoff valve
1
Use the heat insulation material for the refrigerant piping which has
an excellent heat-resistance (over 120 °C [248 °F]).
ENGLISH
Preparation of Piping
10
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 [73.4 °F]), water drops
are liable to fall. In this case, add heat insulation material according
to the following procedure:
- Heat insulation material to be prepared:
EPDM (Ethylene Propylene Diene Methylene)-over 120 °C [248
°F] the heat-resistance temperature.
Nitrogen substitution method
Welding, as when heating without nitrogen substitution a large amount
of the oxide film is formed on the internal piping.
The oxide film is a caused by clogging EEV, Capillary, oil hole of
accumulator and suction hole of oil pump in compressor.
It prevents normal operation of the compressor.
In order to avoid this problem, Welding should be done after replacing
air by nitrogen gas.
When welding plumbing pipe, the work is required.
- Add the insulation over 10 mm [0.39 inch] thickness at high
humidity environment.
Regulator
Welding Point
Fastening band
(accessory)
Nitrogen gas
Pressure 0.02 MPa
(2.9 psi) less
Oxide scale
Note) should not block the outlet side.
When the internal pressure in pipe is abo
ve the atmospheric pressure, pinhole is
occurred and it is a leakage cause.
Refrigerant piping
Indoor unit
Taping
(Should not
contain air)
Auxiliary valve
Nitrogen
ENGLISH
2
Thermal insulator
(accessory)
!
Plumbing materials and storage methods
Pipe must be able to obtain the specified thickness and should be
used with low impurities.
Also when handling storage, pipe must be careful to prevent a
fracture, deformity and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Items
Drying
Cleanliness
Airtight
Should be no moisture
inside
No dust inside.
There is no refrigerant
leakage
Moisture
Dust
Leakage
- Significant hydrolysis
of refrigerant oil
- Degradation of
refrigerant oil
Cause - Poor insula’tion of
failure the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- Degradation of
refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- Gas shortages
- Degradation of
refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- No moisture in the pipe
- Until the connection
is completed, the
plumbing pipe
entrance should be
strictly controlled.
- Stop plumbing at
rainy day.
Counter - Pipe entrance
measur should be taken side
or bottom.
e
- When removal burr
after cutting pipe, pipe
entrance should be
taken down.
- Pipe entrance
should be fitted cap
when pass through
the walls.
- No dust in the pipe.
- Until the
connection is
completed, the
plumbing pipe
entrance should be
strictly controlled.
- Pipe entrance
should be taken
side or bottom.
- When removal burr
after cutting pipe,
pipe entrance
should be taken
down.
- Pipe entrance
should be fitted cap
when pass through
the walls.
- Airtightness test
should be.
- Brazing operations
to comply with
standards.
- Flare to comply
with standards.
- Flange connections
to comply with
standards.
CAUTION
• Always use the nitrogen.(not use oxygen, carbon dioxide, and a Chevron
gas): Please use the following nitrogen pressure 0.02 MPa (2.9 psi)
Oxygen - Promotes oxidative degradation of refrigerant oil. Because it is
flammable, it is strictly prohibited to use Carbon dioxide - Degrade the
drying characteristics of gas Chevron Gas - Toxic gas occurs when
exposed to direct flame.
• Always use a pressure reducing valve.
• Please do not use commercially available antioxidant.
The residual material seems to be the oxide scale is observed. In
fact, due to the organic acids generated by oxidation of the alcohol
contained in the anti-oxidants, ants nest corrosion occurs. (causes of
organic acid → alcohol + copper + water + temperature)
11
Connection of Outdoor units
When installing ODU series, refer below picture.
For Heat Pump System Installation
A
B
(Master)
Precautions on Pipe connection / Valve operation
C
(Slave 1)
D
(Slave 2)
(Slave 3)
Pipe connection is done by connecting from the end of the pipe to the
branching pipes, and the refrigerant pipe coming out of the outdoor
unit is divided at the end to connect to each indoor unit. Flare
connection for the indoor unit, and welding connection for the outdoor
pipe and the branching parts.
- Use hexagonal wrench to open/close the valve.
h In case of the heat pump system installation, be sure to maintain to
close no use pipe like below picture.
Service Port
A≥B≥C≥D
① IDU side connection pipe
② ODU to ODU connection pipe (1st branch)
③ ODU to ODU connection pipe (2st branch)
④ ODU to ODU connection pipe (3rd brach)
2, 3, 4 Outdoor Units
Liquid pipe
Outdoor units
Model
Liquid Pipe
No Use (Keep closed)
O.D 15.88
Gas Pipe
I.D 19.05
I.D 22.2 O.D 28.58 I.D 34.9
331
314
I.D 15.88
C
Gas pipe
C
2 Unit
ARCNN21
416
408
I.D 15.88
I.D 28.58
I.D 12.7 I.D 9.52
I.D 19.05
I.D 28.58
83
I.D 22.2 O.D 19.05
I.D 12.7
C
I.D 15.88
111
I.D 22.2
I.D 31.8 I.D 34.9
I.D 41.3 I.D 38.1 O.D 34.9
I.D 28.58
I.D 9.52
O.D 12.7
70
130
O.D 15.88
C
I.D 22.2 O.D 28.58
I.D 19.05
I.D 34.9
I.D 41.3 O.D 34.9
O.D 34.9 I.D 28.58
O.D 19.05
I.D 15.88
I.D 12.7
O.D 19.05
I.D 22.2
125
334
281
341
298
C
!
WARNING
• Always careful not to leak the refrigerant during welding.
• The refrigerant generates poisonous gas harmful to human body
if combusted.
• Do not perform welding in a closed space.
• Be sure to close the cap of the service port to prevent gas
leakage after the work.
!
CAUTION
Please block the pipe knock outs of the front and side panels after
installing the pipes.
(Animals or foreign objects may be brought in to damage wires.)
ARCNN31
3 Unit
83
I.D 19.05
I.D 22.2 I.D 19.05
I.D 34.9
I.D 41.3
I.D 15.88 I.D 12.7
111
I.D 28.58
I.D 53.98 I.D 44.5 O.D 41.3
C
I.D 28.58 O.D 22.2
O.D 15.88
O.D 19.05 I.D 22.2
I.D 19.05
I.D 28.58
I.D 22.2 O.D 28.58
O.D 41.3 I.D 44.5
334
281
A
4 Unit
ARCNN41
I.D 34.9
I.D 53.98
415
375
I.D 19.05
I.D 22.2 I.D 19.05
83
I.D 41.3
I.D 44.48 I.D 53.98
134
C
I.D 15.88 I.D 12.7
I.D 31.8 I.D 28.58 O.D 22.2
I.D 28.58
O.D 15.88
I.D 19.05
I.D 22.2 O.D 28.58 I.D 34.9
For more information, refer accessory installation manual.
Y branch
Within +/- 10°
A
B
A To outdoor unit
B To branch piping or indoor unit
Facing
downwards
Within ±3°
Facing
upwards
Within ±3°
Viewed from point A
in direction of arrow
ENGLISH
REFRIGERANT PIPING
INSTALLATION
12
ENGLISH
1 Use the following materials for refrigerant piping.
9 The Multi V will stop due to an abnormality like excessive or
- Material: Seamless phosphorous deoxidized copper pipe
- Wall thickness : Comply with the relevant local and national
regulations for the designed pressure 3.8 MPa
(551 psi). We recommend the following table as
the minimum wall thickness.
Outer diameter 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
[mm(inch)] (1/4) (3/8) (1/2) (5/8) (3/4) (7/8) (1) (1-1/8) (1-1/4) (1-3/8) (1-1/2) (1-5/8) (1-3/4) (2-1/8)
Minimum
thickness
[mm(inch)]
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
(0.03) (0.03) (0.03) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04) (0.05) (0.05) (0.06) (0.06) (0.08)
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.
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.
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.
Header
Y branch
4 branches 7 branches 10 branches
ARBLB01621, ARBLB03321,
ARBLB07121, ARBLB14521,
ARBLB23220
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 To Outdoor Unit
B Sealed Piping
A
B
!
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.
13
Outdoor units
Precautions on Pipe connection / Valve operation
Model
Low Pressure Gas Pipe
I.D 22.2 O.D 28.58
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.
O.D 15.88
I.D 34.9
I.D 28.58
C
2 Unit
ARCNB21
I.D 19.05
I.D 15.88
I.D 28.58
O.D 22.2
I.D 12.7 I.D 9.52
I.D 19.05
I.D 22.2
I.D 31.8 I.D 34.9
I.D 19.05
I.D 15.88
416
408
I.D 15.88
I.D 28.58
I.D 28.58
83
111
111
I.D 22.2
I.D 31.8 I.D 34.9
I.D 22.2 O.D 19.05
I.D 41.3 I.D 38.1 O.D 34.9
C
High Pressure Gas Pipe
331
314
416
408
C
Liquid Pipe
I.D 12.7
I.D 15.88
I.D 28.58
I.D 28.58
I.D 9.52
O.D 12.7
70
130
O.D 28.58
I.D 19.05
I.D 22.2
I.D 22.2
C
O.D 28.58
I.D 34.9
O.D 15.88
I.D 19.05
I.D 41.3 O.D 34.9
O.D 34.9 I.D 28.58
- Use hexagonal wrench to open/close the valve.
O.D 19.05
125
I.D 15.88
I.D 22.2 O.D 28.58
I.D 12.7
341
298
O.D 19.05
I.D 22.2
I.D 28.58
I.D 28.58
C
Service Port
ARCNB31
3 Unit
I.D 34.9
I.D 41.3
83
I.D 19.05
I.D 22.2 I.D 19.05
111
I.D 22.2
I.D 31.8 I.D 34.9
111
I.D 34.9
416
408
334
281
I.D 41.3 I.D 38.1 O.D 34.9
I.D 28.58
I.D 28.58
O.D 190.05 I.D 22.2
I.D 22.2
O.D 41.3
I.D 44.5
A
ARCNB41
I.D 44.48 I.D 53.98
I.D 28.58
O.D 28.58 I.D 34.9
I.D 53.98
I.D 34.9 O.D 28.58 I.D 22.2
O.D 15.88
O.D 19.05 I.D 22.2
415
375
4 Unit
130
I.D 15.88 I.D 12.7
I.D 53.98 I.D 44.5 O.D 41.3
C
I.D 19.05
I.D 53.98 I.D 44.5 O.D 41.3
I.D 28.58
O.D 34.9
I.D 41.3
I.D 41.3
I.D 44.5
341
298
334
281
I.D 19.05
I.D 22.2 I.D 19.05
83
134
I.D 34.9
I.D 41.3
111
C
I.D 15.88 I.D 12.7
Liquid pipe
I.D 28.58
I.D 31.8 I.D 28.58 O.D 22.2
I.D 22.2 O.D 28.58 I.D 34.9
O.D 15.88
I.D 53.98 I.D 44.5 O.D 41.3
I.D 19.05
I.D 28.58
I.D 34.9 O.D 28.58 I.D 22.2
Low Pressure Gas pipe
For more information, refer accessory installation manual.
High Pressure Gas pipe
Y branch
Within +/- 10°
A
!
A To outdoor unit
WARNING
B To branch piping or indoor unit
• 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.
!
B
Facing
downwards
Viewed from point A
in direction of arrow
Facing
upwards
CAUTION
Please block the pipe knock outs of the front and side panels after
installing the pipes.
(Animals or foreign objects may be brought in to damage wires.)
1 Using an insert-hole-in- anchor, hang the hanging bolt.
2 Install a hexagon nut and a flat washer (locally-procured)to the
When installing ODU series, refer below picture.
A
B
(Slave 1)
Within ±3°
Installation procedure for HR unit
Connection of Outdoor units
(Master)
Within ±3°
C
(Slave 2)
A≥B≥C≥D
① IDU side connection pipe
② ODU to ODU connection pipe (1st branch)
③ ODU to ODU connection pipe (2st branch)
④ ODU to ODU connection pipe (3rd brach)
D
(Slave 3)
hanging bolt as shown in the figure in the bottom, and fit the main
unit to hang on the hanger metal.
3 After checking with a level that the unit is level, tighten the hexagon
nut.
* The tilt of the unit should be within ±5° in front/back and left/right.
4 This unit should be installed suspended from ceiling and side A
should always be facing up.
5 Insulate not used pipes completely as shown in the figure.
Six-sided Nut
(M10 or M8)
A
Hanger metal
Flat washer
(M10)
Hanging bolt
(M10 or M8)
Insulation
ENGLISH
2, 3, 4 Outdoor Units
For Heat Recovery System Installation
14
ENGLISH
Installation of Outdoor Unit, HR Unit, Indoor Unit
Refrigerant Pipe
Joint Method of HR Unit (Big Duct : ARNU76GB8-,
ARNU763B8-, ARNU96GB8-, ARNU963B8-)
3 pipes are connected to the HR unit from the outdoor unit, classified
into liquid pipe, low pressure gas pipe and high pressure gas pipe
depending on status of refrigerant passing through the pipe.
You must connect 3 pipes from outdoor unit to HR unit.
For connection between indoor unit and HR unit, you must connect
both liquid pipe and gas pipe from the HR unit to the indoor unit. In this
case, connect them to the indoor unit starting from No.1 connection
port of the HR unit (the port number is displayed on ports of the HR
unit). Use auxiliary flare as annexed parts in connection to the indoor
unit.
Joint Method is required when the big duct chassis is installed. In Joint
Method, two neighboring outlets of one HR unit are linked by Y branch
pipe and connected to one indoor unit.
1st HR Unit
1
2
3
2nd HR Unit
4
1
B8 BG
(96 k) (28 k)
2
3
4
BH B8
(21 k) (76 k)
Gas pipe
Liquid pipe
High
Pressure
Gas Pipe
HR Unit
Liquid pipe
High pressure gas pipe
3 4
1 2
Liquid pipe
Gas pipe
Gas pipe Ø 15.88 (5/8)
Liquid pipe Ø 9.52 (3/8)
Brazing Type
Remove caps on
The brazing part.
Low Pressure
Gas Pipe
Liquid pipe
Pipe
connection
From left
side
Pipe
connection
From right
side
HR unit
PRHR022
PRHR022A
PRHR032
PRHR032A
PRHR042
PRHR042A
Low pressure
gas pipe
Ø 22.2 (7/8)
Ø 28.58 (1-1/8)
Ø 28.58 (1-1/8)
High pressure
gas pipe
Ø 19.05 (3/4)
Ø 22.2 (7/8)
Ø 22.2 (7/8)
Liquid pipe
Ø 9.52 (3/8)
Ø 12.7 (1/2)
Ø 15.88 (5/8)
Installation of Zoning Control
Parallel
pipe
connection
!
3 4
1 2
Low pressure gas pipe
Some indoor unit can be connected to one port of HR unit.
CAUTION
Whenever connecting the indoor units with the HR unit, install the
indoor units in numerical order from No.1.
Ex) In case of installing 3 indoor units : No. 1, 2, 3 (O), No. 1, 2, 4 (X),
No.1, 3, 4 (X), No.2, 3, 4 (X).
HR unit
Zoning control group 1
HR unit
sealing
Zoning control group 2
(Max. 8 Indoor Units)
(Max. 8 Indoor Units)
Type of HR Unit
Changeover under control
Select an HR unit according to the number of the indoor units to be
installed. HR units are classified into 3 types by the number of
connectable indoor units.
Ex) Installation of 6 indoor units
Consists of HR unit for 4 branches and HR unit for 2 branches.
1
2
1
PRHR022 or PRHR022A
(2 branches)
2
3
PRHR032 or PRHR032A
(3 branches)
3 4
1 2
PRHR042 or PRHR042A
(4 branches)
!
Auto changeover
Changeover under control
WARNING
• A branch pipe of HR unit allows up to 14.1 kW (48 kBtu/h) based
on cooling capacity of the indoor unit.
(up to 14.1 kW (48 kBtu/h) for max installation)
• The maximum total capacity of indoor units connected to a
PRHR042 or PRHR042A HR unit is 56.4 kW (192 kBtu/h).
• The maximum number of indoor units connected to a PRHR042
or PRHR042A HR unit are 32 indoor units. (The Maximum indoor
units per a branch pipe of HR unit are 8 indoor units)
• There is not operate “Auto-changeover” & “Mode override”
function in the zoning group.
• When there are operating indoor units on cooling(heating) mode,
another indoor units aren’t changed on heating(cooling) mode in
the zoning group.
15
ENGLISH
[Reducers for indoor unit and HR unit]
Unit : mm (inch)
A
Gas pipe
Models
Liquid pipe
High pressure
Indoor unit
reducer
Low pressure
–
OD 9.52(3/8) Ø 6.35(1/4)
OD 15.88(5/8)
PRHR022
PRHR022A
OD 19.05(3/4) Ø 15.88(5/8) Ø 12.7(1/2)
Ø 12.7(1/2)
A To Outdoor Unit
B Sealed Piping
OD 22.2(7/8) Ø 19.05(3/4) Ø 15.88(5/8)
OD 9.52(3/8) Ø 6.35(1/4)
OD 12.7(1/2)
Ø 9.52(3/8)
OD 15.88(5/8)
Ø 12.7(1/2)
HR unit
reducer
A
PRHR032,
PRHR042
PRHR032A,
PRHR042A
OD 22.2(7/8) Ø 19.05(3/4) Ø 15.88(5/8)
B
OD 28.58(1-1/8) Ø 22.2(7/8) Ø 19.05(3/4)
OD 15.88(5/8) Ø 12.7(1/2) Ø 9.52(3/8)
OD 15.88(5/8) Ø 12.7(1/2)
OD 19.05(3/4)
Ø 15.88(5/8)
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 3.8 MPa
(551 psi). We recommend the following table as
the minimum wall thickness.
Outer diameter 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
[mm(inch)] (1/4) (3/8) (1/2) (5/8) (3/4) (7/8) (1) (1-1/8) (1-1/4) (1-3/8) (1-1/2) (1-5/8) (1-3/4) (2-1/8)
Minimum
thickness
[mm(inch)]
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
(0.03) (0.03) (0.03) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04) (0.05) (0.05) (0.06) (0.06) (0.08)
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.
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.
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.
Header
Y branch
4 branches 7 branches 10 branches
ARBLB01621, ARBLB03321,
ARBLB07121, ARBLB14521,
ARBLB23220
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 .)
!
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.
16
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 0.2 kgf/cm2 (2.8 psi) 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.
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether all the pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
Service Port
Liquid pipe
Not used
(keep closed)
Right
Side Pipe
Draw Out
Regulator
Refrigerant Pipe
Gas pipe
Nitrogen
Direction
Taping
Valve
Nitrogen
Left Side
Pipe Draw
Out
Leakage
Prevention Cap
Front Pipe Draw Out
Pipe Drawing Out during Single / Series connection
For Heat Pump System Installation
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.
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
High Pressure
Gas pipe
Liquid pipe
Knock Out for low
pressure gas pipe
Knock Out for high
pressure gas pipe
Knock Out for
Liquid pipe
Liquid pipe
Gas pipe
Removal area for pipes
bottom side connections.
!
Knock Out for
communication cable
Knock Out for
power supply cable
Chassis
UXA
UXB
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.
A
C
HP
8
10
12
A(mm)
9.52(3/8)
9.52(3/8)
12.7(1/2)
14/16
24/26
12.7(1/2) 15.88(5/8) 15.88(5/8)
C(mm) 19.05(3/4) 19.05(3/4) 19.05(3/4) 22.2(7/8)
* Elbow is Field supplied
18/20/22
22.2(7/8)
28.58
(1-1/8)
17
Y branch method
Remove Knock Out for the pipes
Refrigerant piping system
1 Outdoor Units
Y branch method
Indoor
Unit
H 110 m [361 ft]
L 150 m [492 ft] (200 m [656 ft])
h 40 m (131 ft)
10 m or
less
ODU Capacity
Master ≥ Slave 1 ≥ Slave 2 ≥ Slave 3
Slave 3
Slave 2
Slave 1
Master
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90 m [295 ft]
h * : See Table 4
Header Method
h * : See Table 4
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft])
h * : See Table 4
Header Method
H 110 m [361 ft]
L 200 m [656 ft]
l 40 m [131 ft]
h 40 m [131 ft]
h 40 m(131 ft)
H 110 m [361 ft]
Combination of Y
branch/header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Ⓔ : Header
Slave 3
Slave 2
Slave 1
Master
l 40 m [131 ft] (90 m [295 ft])
h 40 m [131 ft]
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
l 40 m [131 ft] (90 m [295 ft])
H 110 m [361 ft]
Ⓐ : 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
Ⓘ : Sealed piping
L 150 m [492 ft] (200 m [656 ft])
h * : See Table 4
Combination of Y branch/
header Method
h Please weld with the proper Low pressure Gas pipe included with
product.
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Master
h 40 m (131 ft)
High Pressure Gas pipe
Indoor
Unit
Slave 3
Slave 2
Slave 1
Master
10 m or
less
H 110 m [361 ft]
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓓ : Downward Indoor Unit
Ⓔ : Connection branch
pipe between Outdoor
units: ARCNN41
Ⓕ : Connection branch
pipe between Outdoor
units : ARCNN31
Ⓖ : Connection branch
pipe between Outdoor
units : ARCNN21
ODU Capacity
Master ≥ Slave 1 ≥ Slave 2 ≥ Slave 3
Slave 3
Slave 2
Slave 1
Low Pressure Gas pipe
Ⓐ : Outdoor Unit
Ⓑ : Header branch
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Ⓔ : Connection branch pipe
between Outdoor
units : ARCNN41
Ⓕ : Connection branch pipe
between Outdoor
units : ARCNN31
Ⓖ : Connection branch pipe
between Outdoor
units : ARCNN21
ODU Capacity
Master ≥ Slave 1 ≥ Slave 2 ≥ Slave 3
Slave 3
Slave 2
Slave 1
Master
10 m or
less
H 110 m [361 ft]
Liquid pipe
Slave 3
Slave 2
Slave 1
Master
L 200 m [656 ft]
l 40 m [131 ft]
h 40 m (131 ft)
ENGLISH
Series Outdoor Units (2 Units ~ 4 Units)
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
18
Slave 1
Master
Slave 2
Slave 3
(Table 2) Refrigerant pipe diameter from outdoor unit to first branch. (A)
Pipe diameter when pipe
ODU length is < 90 m (295 ft)
(Standard)
capacity
(hp)
Liquid Pipe
Gas Pipe
mm (inch)
mm (inch)
Pipe diameter when pipe Pipe diameter when height
length is ≥ 90 m (295 ft) differential (ODU↔IDU) is > 50 m
(164 ft)
Liquid Pipe
mm (inch)
Gas Pipe
mm (inch)
Liquid Pipe
mm (inch)
Gas Pipe
mm (inch)
H1
8
Ø 9.52 (3/8) Ø 19.05 (3/4) Ø 12.7 (1/2) Ø 22.2 (7/8) Ø 12.7 (1/2) Not increased
10
Ø 9.52 (3/8) Ø 22.2 (7/8) Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 12.7 (1/2) Not increased
F
12~16
Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 15.88 (5/8) Ø 34.9 (1-3/8) Ø 15.88 (5/8) Not increased
18~22
Ø 15.88 (5/8) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Ø 34.9 (1-3/8) Ø 19.05 (3/4) Not increased
L2
L3
E
Indoor
Unit
G
L1
1st branch
l 40 m (131 ft) Refrigerant pipe diameter from outdoor unit to first branch
h 40 m (131 ft)
h See Table 2
A : Refrigerant pipe diameter from outdoor unit to first branch
E : Refrigerant pipe diameter for outdoor unit capacity
(Slave 1+ Slave 2+ Slave 3)
F : Refrigerant pipe diameter for outdoor unit capacity
(Slave 2+ Slave 3)
G : Refrigerant pipe diameter for outdoor unit capacity(Slave 3)
Level Difference
(Outdoor unit ↔ Outdoor unit)
Max length from first branch to
each outdoor unit (L1, L2, L3)
5 m [16.4 ft]
Less than 10 m [32.8 ft]
(equivalent length of piping 13 m
[42.7 ft])
(Table 1) Limit Pipe length
Combination of Y Header
branch/header
Method
Method
A + B + C + D + e ≤ A + B + b ≤ 150 m [492 ft]
150 m [492 ft]
A + C + e ≤ 150 m [492 ft] A + f ≤ 200 m
(200 m [656 ft] : (200 m [656 ft] : Conditional [656 ft]
Conditional application)*
application)*
175 m [574 ft]
175 m [574 ft]
225 m
(225 m [738 ft] :
(225 m [738 ft] :
Conditional application)* Conditional application)* [738 ft]
1 000 m
1 000 m [3281 ft]
1 000 m [3 281 ft]
[3 281 ft]
Y branch
Method
Longest
pipe
length(L)
Max pipe
length
Outdoor Unit
↔
Equivalent
Indoor Unit pipe length
Total pipe
length
Outdoor Unit Difference in
Max
↔ Indoor Unit height(H)
difference
Indoor Unit Difference in
in height
↔ Indoor Unit height(h)
Longest pipe
length after
1st branch
110 m [361 ft]
110 m [361 ft]
110 m [361 ft]
40 m [131 ft]
40 m [131 ft]
40 m [131 ft]
40 m [131 ft]
40 m [131 ft]
Pipe
(90 m [295 ft] :
(90 m [295 ft] :
40 m [131 ft]
length(l) Conditional application)* Conditional application)*
h * : See Table 4
!
WARNING
Increased Pipe Diameter(table 2)
- When pipe length is 90 m [295 ft] or more from ODU to 1st
branch
- When level difference is 50 m [164 ft] or more
24
Ø 15.88 (5/8) Ø 34.9 (1-3/8) Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 19.05 (3/4) Not increased
26~34
Ø 19.05 (3/4) Ø 34.9 (1-3/8) Ø 22.2 (7/8) Ø 41.3 (1-5/8) Ø 22.2 (7/8) Not increased
36~60
Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 22.2 (7/8) Ø 44.5 (1-3/4) Ø 22.2 (7/8) Not increased
62~64
Ø 22.2 (7/8) Ø 44.5 (1-3/4) Ø 25.4 (1) Ø 53.98 (2-1/8) Ø 25.4 (1) Not increased
66~96
Ø 22.2 (7/8) Ø 53.98 (2-1/8) Ø 25.4 (1) Ø 53.98 (2-1/8) Ø 25.4 (1) Not increased
(Table 3) Refrigerant pipe diameter from first branch to last branch (B,C,D)
Downward indoor unit
total capacity [kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19 100)
< 16.0 (54 600)
≤ 22.4 (76 400)
< 33.6 (114 700)
< 50.4 (172 000)
< 67.2 (229 400)
< 72.8(248 500)
< 100.8(344 000)
< 173.6(592 500)
< 184.8(630 700)
≤ 224.0(764 400)
Ø 6.35(1/4)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1-1/8)
Ø 28.58(1-1/8)
Ø 34.9(1-3/8)
Ø 34.9(1-3/8)
Ø 41.3(1-5/8)
Ø 44.5(1-3/4)
Ø 53.98(2-1/8)
(Table 4) Conditional Application
• To satisfy below condition to make 40 m~90 m of pipe length after first branch.
Condition
Diameter of pipes between
first branch and the last
40 m [131 ft] < B + C +
branch should be increased
D+e
1
by one step, except pipe 90 m [295 ft] ’ B, C, D
diameter B, C, D is same
Change a diameter
as Diameter A
Example
Ø 6.35(1/4) ’ Ø 9.52(3/8), Ø 9.52(3/8) ’
Ø 12.7(1/2), Ø 12.7(1/2) ’ Ø 15.88(5/8),
Ø 15.88(5/8) ’ Ø 19.05(3/4), Ø 19.05(3/4)
’ Ø 22.2(7/8), Ø 22.2(7/8) ’ Ø 25.4(1), Ø
25.4(1) ’ Ø 28.58(1-1/8), Ø 28.58(1-1/8)
’ Ø 31.8(1-1/4), Ø 31.8(1-1/4) ’ Ø
34.9(1-3/8), Ø 34.9(1-3/8) ’ Ø 38.1(1-1/2)
While calculating whole
A+Bx2+Cx2+Dx2
refrigerant pipe length, pipe
+a+b+c+d+e≤
2
B, C, D length should be
1 000 m [3 281 ft]
calculated twice.
Indoor
Unit
Length of pipe from each
a, b, c, d, e ≤ 40
3 indoor unit to the closest
m [131 ft]
branch
Length of pipe from
outdoor unit to the
farthest indoor unit 5 (A + (A + B + C + D + e)4 B + C + D + e)] - [Length (A + a) ≤ 40 m [131
of pipe outdoor unit to the
ft]
closest indoor unit 1 (A +
a)] ≤ 40 m [131 ft]
L
H 110 m [361 ft]
ENGLISH
Pipe Connection Method between outdoor
unit/indoor unit
l
h 40 m [131 ft]
19
WARNING
!
• In case of pipe diameter B connected after first branch is bigger
than the main pipe diameter A, B should be of the same size
with A.
Ex) In case indoor unit combination ratio 120 % is connected to
24HP(67.2 kW) outdoor unit.
1) Outdoor unit main pipe diameter A : Ø 34.9(1-3/8)(Gas
pipe), Ø 15.88(5/8)(liquid pipe)
2) Pipe diameter B after first branch according to 120 %
indoor unit combination(80.6kW) : Ø 34.9(1-3/8)(gas pipe),
Ø 19.05(3/4)(liquid pipe)
Therefore, pipe diameter B connected after first branch
would be Ø 34.9(1-3/8)(gas pipe) / Ø 15.88(5/8)(liquid pipe)
which is same with main pipe diameter.
CAUTION
• Bending radius should be
at least twice the diameter
of the pipe.
• Bend pipe after 500 mm
[19.7 inch] or more from
branch(or header).
Do not bend U type.
It may affect performance
or result in noise. If U type
bending is required the R
should be more than 200
mm [7.9 inch]
500 mm [19.7 inch]
or more
500 mm [19.7 inch]
or more
R
Pipe Connection Method/Precautions for
Series connections between Outdoor units
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
70 kW outdoor unit.
1) Outdoor unit main pipe diameter A : Ø 34.9(1-3/8))(Low
pressure gas pipe), Ø 15.88(5/8)(liquid pipe), Ø 28.58(11/8)(High Pressure liquid pipe)
2) Pipe diameter B after first branch according to 120 %
indoor unit combination(84 kW) : Ø 34.9(1-3/8)(Low
pressure gas pipe), Ø 19.05(3/4)(liquid pipe), Ø 28.58(11/8)(High Pressure liquid pipe)
Therefore, pipe diameter B connected after first branch
would be Ø 34.9(1-3/8)(Low pressure gas pipe), Ø
15.88(5/8)(liquid pipe), Ø 28.58(1-1/8)(High Pressure 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 7 k (2.1 kW) indoor unit at the 1st branch
Main pipe diameter(22 HP outdoor unit): Ø 28.58(1-1/8)(Low
pressure gas pipe), Ø 15.88(5/8)(Liquid pipe), Ø 22.2(7/8)(High
pressure gas pipe)
Pipe diameter between 1st and 2nd branch (71.7 kW indoor
units): Ø 34.9(1-3/8)(Gas pipe) Ø 19.05(3/4)(Liquid pipe) in
conformity with Downward indoor units.
Since the main pipe diameter of 22HP outdoor unit is Ø 28.58(11/8)(Low pressure gas pipe), Ø 15.88(5/8)(Liquid pipe), Ø 22.2(7/8)
(High pressure gas pipe) is used as the main pipe and the
connection pipe between 1st and 2nd branch.
Indoor Unit Connection
Indoor Unit connecting pipe from branch (a,b,c,d,e,f)
Indoor Unit capacity
[kW(Btu/h)]
≤ 5.6(19 100)
< 16.0(54 600)
< 22.4(76 400)
< 28.0(95 900)
Liquid pipe
[mm(inch)]
Ø 6.35(1/4)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 9.52(3/8)
Gas pipe [mm(inch)]
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
- Separate Y branch joints are needed for series connections between
outdoor units.
- Please refer to the below connection examples to install pipe
connections between outdoor units.
Pipe connection between outdoor
units (General Case)
The maximum pipe
length after the first
branching between the
outdoor units is 10 m
[32.8 ft] or less
Pipes between outdoor units
are 2 m [6.6 ft] or less
2 m [6.6 ft] or less
Pipes between outdoor units
are 2 m [6.6 ft] or longer
Oil Trap
0.2 m [0.66 ft]
2 m [6.6 ft] or less
2 m [6.6 ft] or longer
Oil Trap
2 m [6.6 ft] or less
2 m [6.6 ft] or longer
Oil Trap
2 m [6.6 ft] or less
2 m [6.6 ft] or longer
- If the distance between the outdoor units becomes more than 2 m
[6.6 ft], apply Oil Traps between the gas pipes.
- If the outdoor unit is located lower than the main pipe, apply Oil Trap.
ENGLISH
!
20
If the main pipe is
higher than the
outdoor units, oil is
accumulated in the
outdoor unit.
- 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.
Oil Trap
(Example 1)
Toward indoor unit
If there are differences in the height
between the outdoor units, oil is
accumulated in the lower outdoor unit.
Toward indoor unit
(Example 2)
(Example 1)
h
Toward indoor unit
Toward indoor unit
Toward indoor unit
(Example 2)
Toward indoor unit
(Example 3)
Pipe inclination (2° or more)
Toward indoor unit
Oil Trap
(Example 3)
h
Toward indoor unit
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 2 m [6.6 ft]. Otherwise, the unit may
not operate properly.
(Example 1)
Toward indoor unit
2m
(Example 2)
0.2 m [0.66 ft]
Oil Trap
Toward indoor unit
2 m [6.6 ft]
2 m [6.6 ft]
h
Toward indoor unit
0.2 m [0.66 ft]
ENGLISH
Examples of Wrong Pipe Connections
21
ENGLISH
Branch pipe Fitting
• Header should be insulated with the insulator in each kit.
Y branch
B
A
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
Ⓐ To Branch Piping or Indoor Unit
Ⓑ To Outdoor Unit
• Ensure that the branch pipes are attached horizontally or vertically
(see the diagram below.)
Horizontal
plane
Facing
downwards
Facing
upwards
Within +/- 10°
• Joints between branch and pipe should be sealed with the tape
included in each kit.
A
Viewed from point A
in direction of arrow
Tape
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.
Insulator
Insulator of field pipe
• Any cap pipe should be insulated using the insulator provided with
each kit and then taped as described above.
Tape
Insulator for cap pipe
(field supply)
Cap pipe
Liquid and gas
pipe joints
Insulator
(included with kit)
Tape
Insulator for
field piping
Y branch pipe
[Unit:mm(inch)]
Header
A
B
C
Ⓐ To Outdoor Unit
Ⓑ To Indoor Unit
• The indoor unit having larger
capacity must be installed closer
to Ⓐ than smaller one.
• If the diameter of the refrigerant
piping selected by the
procedures described is
different from the size of the
joint, the connecting section
should be cut with a pipe cutter.
ⓒ Pipe cutter
Models
Gas pipe
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 12.7(1/2)
ARBLN01621
I.D 12.7(1/2)
O.D 9.52(3/8)
1
O.D 15.88(5/8)
70(2-3/4)
70(2-3/4)
I.D 22.2(7/8)
I.D 25.4(1)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 12.7(1/2)
I.D 19.05(3/4)
I.D 12.7(1/2)
I.D 9.52(3/8) I.D 6.35(1/4)
2
1
I.D 9.52(3/8)
I.D 19.05(3/4) I.D 12.7
83
I.D 15.88(5/8)
(1/2) (3-9/32)
ARBLN03321
390(15-11/32)
413(16-1/4)
I.D 12.7(1/2)
74
I.D 9.52(3/8) I.D 6.35(1/4) (2-29/32)
I.D 12.7(1/2)
3
I.D 22.2(7/8)
I.D 22.2(7/8) I.D 28.58(1-1/8)
O.D 19.05(3/4)
O.D 25.4(1) O.D 19.05(3/4)
I.D 25.4(1)
3
1 2
80(3-5/32)
70(2-3/4)
321(12-5/8)
332(13-1/16)
110(4-11/32)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 22.2(7/8)
2
I.D 28.58(1-1/8)
1
376(14-13/16)
404(15-29/32)
I.D 34.9(1-3/8)
I.D 22.2(7/8)
90(3-17/32)
120(4-23/32)
I.D 6.35(1/4)
2
70(2-3/4)
110(4-11/32)
I.D 38.1(1-1/2)
I.D 28.58(1-1/8)
2
I.D 28.58(1-1/8) I.D 22.2
I.D 34.9(1-3/8) (7/8)
125
(4-29/32)
I.D 12.7(1/2)
3
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 22.2(7/8) I.D 15.88(5/8)
2
1
I.D 15.88(5/8) I.D 12.7 96
(1/2)
I.D 19.05(3/4)
(3-25/32)
I.D 22.2(7/8)
3
I.D 19.05(3/4)
I.D 41.3(1-5/8)
O.D 22.2(7/8) I.D 15.88(5/8)
O.D 38.1(1-1/2) O.D 34.9(1-3/8) I.D 38.1(1-1/2)
3
2
I.D 41.3
3
(1-5/8)
90(3-17/32)
130(5-1/8)
120(4-23/32)
2
O.D 28.58(1-1/8) I.D 22.2(7/8)
I.D 19.05(3/4)
2
I.D 44.48(1-3/4)
I.D 41.3(1-5/8)
I.D 38.1(1-1/2)
2
I.D 53.98(2-1/4)
3
3
80(3-5/32)
110(4-11/32)
I.D 44.48(1-3/4)
2
420(16-17/32)
490(19-9/32)
I.D 25.4(1)
I.D 22.2(7/8) I.D 19.05(3/4) 96(3-25/32)
3
346(13-5/8)
379(14-29/32)
I.D 31.8(1-1/4)
I.D 53.98(2-1/4)
I.D 25.4(1)
I.D 28.58(1-1/8) O.D 44.48(1-3/4)
I.D 22.2(7/8)
O.D 28.58(1-1/8)
X2 2 3
X2
3
175(6-7/8)
115(4-17/32)
100(4-11/32)
I.D 19.05(3/4)
I.D 15.88(5/8)
3
O.D 22.2(7/8)
120(4-23/32)
I.D 12.7(1/2)
3
O.D 15.88(5/8)
70(2-3/4)
110(4-11/32)
I.D 25.4(1)
I.D 22.2(7/8)
I.D 19.05(3/4)
I.D 25.4(1) I.D 22.2(7/8)
I.D 44.48(1-3/4)
I.D 41.3(1-5/8)
I.D 38.1(1-1/2) 134
I.D 34.9(1-3/8)
3
41616-3/8)
444(17-15/32)
I.D 9.52(3/8)
I.D 12.7(1/2)
O.D 19.05(3/4)
O.D 15.88(5/8) I.D 9.52(3/8)
I.D 22.2(7/8) O.D 12.7(1/2) I.D 6.35(1/4)
120(4-23/32)
70(2-3/4)
1
O.D 38.1(1-1/2)
2 3
O.D 12.7(1/2)
3
120(4-23/32)
471(18-17/32)
517(20-11/32)
ARBLN23220
I.D 9.52(3/8)
O.D 12.7(1/2)
I.D 34.9(1-3/8)
I.D 38.1(1-1/2)
Horizontal plane
83
(3-9/32)
3
371(14-19/32)
394(15-1/2)
3
I.D 9.52(3/8)
I.D 28.58(1-1/8)
• Fit branch pipe lie in a horizontal plane.
I.D 15.88(5/8) I.D 12.7(1/2)
I.D 19.05(3/4)
I.D 19.05(3/4)
O.D 19.05(3/4)
O.D 22.2(7/8) I.D 31.8(1-1/4) O.D 31.8(1-1/4)
I.D 28.58(1-1/8)
2
1
3
O.D 15.88(5/8)
I.D 19.05(3/4)
I.D 15.88(5/8) I.D 12.7(1/2)
2
I.D 15.88(5/8)
I.D 12.7(1/2)
96
I.D 15.88(5/8) I.D 12.7
I.D 19.05(3/4)
(1/2) (3-25/32)
ARBLN07121
Pinched pipe
74
(2-29/32)
281(11-1/16)
292(11-1/2)
I.D 19.05(3/4)
I.D 34.9(1-3/8)
I.D 41.3(1-5/8)
View from point B in the direction of the arrow
I.D 6.35(1/4)
I.D 9.52(3/8)
74
(2-29/32)
281(11-1/16)
292(11-1/2)
1
ARBLN14521
I.D 6.35(1/4)
I.D 9.52(3/8)
1
1
I.D 31.8(1-1/4)
B
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 15.88(5/8)
• When the number of pipes to be
connected is smaller than the
number of header branches,
install a cap to the unconnected
branches.
• 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.
Liquid pipe
I.D 15.88(5/8)
O.D 19.05(3/4)
O.12.7(1/2)
2 3
X2
110(4-11/32)
3
I.D 9.52(3/8)
O.12.7(1/2)
I.D 6.35(1/4)
3
110(4-11/32)
22
ENGLISH
Distribution Method
Header
[Unit:mm(inch)]
Models
Gas pipe
Liquid pipe
360
4 branch
ARBL054
ID 9.52(3/8)
ID 9.52(3/8)
ID 9.52(3/8)
ID 9.52(3/8)
ID 6.35(1/4)
ID 12.7
ID 15.88
120
ID 15.88
120(4-23/32)
ID 6.35(1/4)
ID 9.52(3/8)
9.52(3/8)
ID9.52(3/8)
9.52(3/8)
IDID9.52(3/8)
IDID9.52(3/8)
ID
ID 9.52(3/8)
9.52(3/8)
ID 9.52(3/8)
150
540
ID 9.52(3/8)
Slave 3rd main pipe distribution
Master
2nd
1st
540(21-1/4)
120
120(4-23/32)
ID 12.7
ID 6.35(1/4)
ID 12.7
ID 15.88
ID 15.88
120
150
ID 9.52(3/8)
ID 15.88
ID 19.05
ID 9.52(3/8)
ID 9.52(3/8)
ID 6.35(1/4)
ID 9.52(3/8)
ID 6.35(1/4)ID 9.52(3/8)
ID 19.05
120
ID 15.88
1st
ID 9.52(3/8)
9.52(3/8)
ID9.52(3/8)
9.52(3/8)
IDID9.52(3/8)
IDID9.52(3/8)
ID
ID 9.52(3/8)
9.52(3/8)
ID 9.52(3/8)
150
160
ID 19.05
120
ID 28.58 ID 25.4
2nd
ID 9.52(3/8)
3rd
Main pipe
Distribution
120(4-23/32)
ID 6.35(1/4)
150
120
(5-29/32)
(4-23/32)
ID 9.52(3/8)
ID 9.52(3/8)
ID
ID 9.52(3/8)
9.52(3/8)
ID 9.52(3/8)
ID 12.7(1/2)
ID 22.2
ID 9.52(3/8)
Vertical Distribution
- Ensure that the branch pipes are attached vertically.
720(28-11/32)
160
3rd
1st
Main pipe
Distribution
700(27-9/16)
150 ID 9.52(3/8)
9.52(3/8)
IDID9.52(3/8)
ID 9.52(3/8)
760
1st
150
120
(4-23/32) (5-29/32)
ID 12.7(1/2)
ID 6.35(1/4)
ID 6.35(1/4)
ID 6.35(1/4) ID 6.35(1/4)
ID 9.52(3/8)
ID 15.88 ID 9.52(3/8)
ID 9.52(3/8)
6.35(1/4)
ID6.35(1/4)
6.35(1/4)
IDID6.35(1/4)
ID
9.52(3/8)
IDID6.35(1/4)
ID
ID 6.35(1/4)
6.35(1/4)
ID 6.35(1/4)
580
7 branch
15.88
ID15.88
15.88IDID15.88
IDID15.88
ID
ID 15.88
15.88
ID 15.88
ARBL107
120(4-23/32)
ID 6.35(1/4)
ID 15.88
ID 6.35(1/4)
ID 12.7
ID 19.05
ID 15.88
ID 28.58 ID 25.4
120
150
ID 22.2
Slave
Master
150
120
(5-29/32)
(4-23/32)
ID 9.52 ID 9.52
9.52 (3/8) ID 9.52
ID(3/8)
(3/8)
(3/8)
9.52
ID9.52
9.52 IDID9.52
IDID9.52
ID
9.52
ID
9.52
ID 9.52(3/8)
(3/8)
(3/8)
(3/8)
(3/8)
(3/8)
(3/8) (3/8)
ID 9.52(3/8)
ID 9.52(3/8)
ID 12.7(1/2)
700(27-9/16)
775
182
10 branch
ARBL2010
ID 12.7
ID 19.05
ID 31.8 ID 34.9
107
(4-7/32)
60*9 = 540(21-1/2)
ID 15.88
ID 15.88
2nd
120(4-23/32)
ID 28.58 ID 25.4 ID 22.2
ID 12.7 ID 12.7
ID 12.7
ID 12.7
ID 15.88ID 15.88
ID12.7
12.7
ID 15.88
ID12.7
12.7 ID
ID
15.88
IDID12.7
ID 12.7
12.7
ID 12.7ID
Slave
Master
360(14-5/32)
160
ID 12.7
4 branch
ARBL104
150
120
(5-29/32)
(4-23/32)
ID 9.52(3/8)
ID 12.7(1/2)
400
ID 15.88
10 branch
ARBL1010
150
120
(5-29/32)
(4-23/32)
ID 12.7(1/2)
ID 15.88
ID 19.05
7 branch
ARBL057
Slave
Master
360(14-5/32)
120
ID 12.7
Horizontal Distribution
120
150
ID 28.58
ID 6.35 ID 6.35
ID(1/4)
6.35 (1/4) ID 6.35
(1/4)
(1/4)
ID 9.52 ID 9.52
6.35
ID6.35
6.35(3/8)
IDID6.35
(3/8)
ID
IDID
9.52
6.35
ID
ID 6.35
6.35
ID
9.52
ID 6.35
(1/4)
(1/4)
(1/4)
(1/4)
(3/8)
(1/4)
(1/4)
(3/8)
(1/4) (1/4)
9.52
ID9.52
9.52 IDID9.52
IDID9.52
ID
9.52
ID
9.52
ID 9.52(3/8)
(3/8)
(3/8)
(3/8)
(3/8)
(3/8)
(3/8) (3/8)
ID 6.35(1/4)
150
120
(4-23/32) (5-29/32)
ID 9.52(3/8)
ID 19.05(3/4)
ID 15.88(5/8)
Slave
Master
The others
Slave
Master
Slave
Master
Header
3rd
23
Leak Test and Vacuum drying
This function is used for creating vacuum in the system after
compressor replacement, ODU parts replacement or IDU
addition/replacement.
Leak test
Leak test should be made by pressurizing nitrogen gas to 3.8 MPa(38.7
kgf/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 pressure gas 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.
Vacuum mode setting method
DIP-SW01
7-Segment
SW04C (X : cancel)
SW03C (ȯ: forward)
SW02C (ȭ: backward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW01D (reset)
Series Installation (Heat Recovery)
Slave 1 outdoor unit
Master outdoor unit
Close
High Pressure
Gas Pipe
Low Pressure
Gas Pipe
Low Pressure
Gas Pipe
Close
Close
Nitrogen Gas
Cylinder
Liquid Pipe
Select the mode using ‘▶’, ‘◀’ Button :
“SVC” Push the ‘●’ button
Close
Liquid Pipe
Close
Master unit PCB DIP switch on : No.5
High Pressure
Gas Pipe
Close
When inserting nitrogen
gas of high pressure, it
must be used with
regulator.
Liquid Pipe
Indoor
Unit
HR unit
Nitrogen Gas
Cylinder
Gas Pipe
Select the Function using ‘▶’, ‘◀’ Button :
“Se3” Push the ‘●’ button
Series Installation (Heat Pump)
Start the vacuum mode : “VACC”
ODU Valve open
ODU EEV open
IDU EEV open
HR unit valve open, SC EEV open
Master outdoor unit
Liquid Pipe
Nitrogen Gas
Cylinder
Close
Gas Pipe
Close
Close
No use (closed)
Close
Liquid Pipe
Close
Gas Pipe
Close
No use (closed)
Vacuum mode off method
Slave 1 outdoor unit
When inserting nitrogen
gas of high pressure, it
must be used with
regulator.
Liquid Pipe
Indoor
Unit
DIP switch off and push the reset button on Master unit PCB
Gas Pipe
!
CAUTION
ODU operation stops during vacuum mode. Compressor can't
operate.
!
WARNING
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
ENGLISH
Vacuum Mode
24
Series Installation (Heat Pump)
!
Master outdoor unit
Close
Close
Close
Close
Gas pipe
Liquid pipe
Gas pipe
No use (closed)
Close
Close
Liquid side
Indoor unit
Scale
Use a graviometer. (One that can measure
down to 0.1 kg (0.22 lbs)). If you are
unable to prepare such a high-precision
gravimeter you may use a charge cylinder.
Gas side
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.
Vacuum
Vacuum drying should be made from the service port provided on the outdoor
unit’s service valve to the vacuum pump commonly used for liquid pipe, gas
pipe and high/low pressure common pipe. (Make Vacuum from liquid pipe, gas
pipe and high/low pressure common pipe with the service valve closed.)
* Never perform air purging using refrigerant.
• Vacuum drying: Use a vacuum pump that can evacuate to -100.7 kPa
(-14.6 psi, 5 Torr, -755 mmHg).
- Evacuate the system from the liquid and gas pipes with a vacuum
pump for over 2 hrs and bring the system to -100.7 kPa(-14.6 psi).
After maintaining system under that condition for over 1 hr, confirm
the vacuum gauge rises. The system may contain moisture or leak.
- Following should be executed if there is a possibility of moisture
remaining inside the pipe.
(Rainwater may enter the pipe during work in the rainy season or
over a long period of time)
After evacuating the system for 2 hrs, give pressure to the system
to 0.05 MPa(7.3 psi) (vacuum break) with nitrogen gas and then
evacuate it again with the vacuum pump for 1hr to -100.7 kPa(-14.6
psi)(vacuum drying). If the system cannot be evacuated to -100.7
kPa(-14.6 psi) 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.
Series Installation (Heat Recovery)
Slave 1 outdoor unit
Master outdoor unit
Vacuum
pump
Close
Close
Close
Close
High Pressure
Gas pipe
Low Pressure
Gas pipe
High Pressure
Gas pipe
Low Pressure
Gas pipe
Liquid pipe
Close
Close
Vacuum
pump
Slave 1 outdoor unit
Liquid pipe
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 0.01 MPa(1.5 psi) for each
33.8 °F (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(551 psi) is 80.6 °F (27 °C)
24 hour later: 3.73 MPa(541 psi), 68 °F (20 °C)
In this case the pressure drop of 0.07 MPa
(10 psi) is because of temperature drop
And hence there is no leakage in pipe
occurred.
No use (closed)
NOTE
Liquid pipe
ENGLISH
!
Liquid side
Indoor unit
HR unit
Scale
Use a graviometer. (One that can measure
down to 0.1 kg (0.22 lbs)). If you are
unable to prepare such a high-precision
gravimeter you may use a charge cylinder.
Gas side
!
WARNING
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
!
NOTE
Always add an appropriate amount of refrigerant. (For the refrigerant
additional charge)
Too much or too little refrigerant will cause trouble.
To use the Vacuum Mode (If the Vacuum mode is set, all valves of Indoor
units and Outdoor units will be opened.)
!
WARNING
When installing and moving the air conditioner to another site,
recharge after perfect evacuation.
- If a different refrigerant or air is mixed with the original
refrigerant, the refrigerant cycle may malfunction and the unit
may be damaged.
25
The amount of Refrigerant
For Heat Recovery System Installation
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
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 : Ø 25.4 mm (1.0 inch) × 0.480 kg/m (0.323 lbs/ft)
+ Total liquid pipe : Ø 22.2 mm (7/8 inch) × 0.354 kg/m (0.238 lbs/ft)
+ Total liquid pipe : Ø 19.05 mm (3/4 inch) × 0.266 kg/m (0.179 lbs/ft)
+ Total liquid pipe : Ø 15.88 mm (5/8 inch) × 0.173 kg/m (0.116 lbs/ft)
+ Total liquid pipe : Ø 12.7 mm (1/2 inch) × 0.118 kg/m (0.079 lbs/ft)
+ Total liquid pipe : Ø 9.52 mm (3/8 inch) × 0.061 kg/m (0.041 lbs/ft)
+ Total liquid pipe : Ø 6.35 mm (1/4 inch) × 0.022 kg/m (0.015 lbs/ft)
Include only for
× 0.5 kg/EA (1.1 lbs/EA)
Heat Recovery +
Number of installed HR units
system
CF value of indoor unit
Liquid Pipe
Low Pressure
Gas Pipe
High Pressure
Gas Pipe
For Heat Pump System Installation
Ⓐ Manifold Gauge
Ⓑ Low Pressure Side Handle
Ⓒ High Pressure Side Handle
Amount refrigerant of Indoor units
Example) 4 Way Ceiling Cassette 14.5 kW -1 ea, Ceiling concealed Duct
7.3 kW-2 ea,
Wall Mounted 2.3 kW-4 ea
CF = [0.64 kg (1.411 lbs) × 1 EA] + [0.26 kg (0.573 lbs) × 2 EA]
+ [0.26 kg (0.529 lbs) × 4 EA]
= 2.12 kg (4.67 lbs)
Attach the additional refrigerant table of IDU.
Liquid Pipe
Not used
(keep closed)
!
Gas Pipe
WARNING
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following
equation for human safety.
Total amount of refrigerant in the system
!
WARNING
• Pipe to be vacuumed : gas pipe, liquid pipe
(In case of Heat Recovery system, pipe to be vacuumed : High
pressure gas pipe, Low pressure gas pipe, Liquid pipe)
• If the refrigerant amount is not exact, it may not operate
properly.
• If additionally bottled refrigerant amount is over 10 %,
condenser burst or insufficient indoor unit performance may be
caused.
Volume of the room at which Indoor Unit of
the least capacity is installed
≤ 0.44 kg/m3
(0.028 lbs/ft3)
If the above equation can not be satisfied, then follow the
following steps.
• Selection of air conditioning system: select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: installation position should be over 2 m (6.6 ft) 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
ENGLISH
Refrigerant charging
26
ENGLISH
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.
Heat insulation
Adhesive + Heat - resistant
material
polyethylene foam + Adhesive tape
Indoor
Vinyl tape
Floor Water-proof hemp cloth +
Outer
exposed
Bronze asphalt
covering
Water-proof
cloth +
Outdoor Zinc plate +hemp
Oily paint
Ⓐ Heat insulation material
Ⓑ Pipe
Ⓒ Outer covering(Wind the connection part and cutting part of heat
insulation material with a finishing tape.)
!
NOTE
When using polyethylene cover as covering material, asphalt
roofing shall not be required.
Bad example
• Do not insulate gas or low pressure pipe and liquid or
highpressure pipe together.
B
F
A
C
D
E
Ⓐ Liquid pipe
Ⓑ Gas pipe
ⓒ Power lines
ⓓ Finishing tape
ⓔ Insulating material
ⓕ Communication lines
• Be sure to fully insulate connecting portion.
A
Ⓐ These parts are not insulated.
Good example
C
Power lines
D
Communication lines
D
A
B
E
Separation
Ⓐ Liquid pipe
Ⓑ Gas pipe
ⓒ Power lines
ⓓ Insulating material
ⓔ Communication lines
Penetrations
Inner wall (concealed)
Outer wall
C
A
Outer wall (exposed)
D
A
B
E
B
B
I
Floor (fireproofing)
Penetrating portion on fire
limit and boundary wall
D
Roof pipe shaft
I
F
J
G
D
B
G
H
A
B
F
1m
(3.28 ft)
1m
(3.28 ft)
Ⓐ 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.)
27
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
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.
High Pressure
Gas pipe
Liquid pipe
Knock Out for low
pressure gas pipe
Knock Out for high
pressure gas pipe
Knock Out for
Liquid pipe
Low Pressure Gas pipe
Liquid pipe
High Pressure Gas pipe
Low Pressure Gas pipe
Removal area for pipes
bottom side connections.
!
Knock Out for
communication cable
Knock Out for
power supply cable
Chassis
CAUTION
UXA
UXB
• 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.
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether the liquid/gas pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
Service Port
A
B
C
HP
8
10
12
A(mm)
9.52(3/8)
9.52(3/8)
12.7(1/2)
B(mm) 19.05(3/4) 22.2(7/8)
28.58
(1-1/8)
14/16
Low Pressure
Gas pipe
High Pressure
Gas pipe
24/26
12.7(1/2) 15.88(5/8) 15.88(5/8)
28.58
(1-1/8)
C(mm) 19.05(3/4) 19.05(3/4) 19.05(3/4) 22.2(7/8)
Liquid pipe
18/20/22
28.58
(1-1/8)
22.2(7/8)
34.9
(1-3/8)
28.58
(1-1/8)
* Elbow is Field supplied
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
Low Pressure Gas pipe
Leakage
Prevention Cap
High Pressure Gas pipe
Remove Knock Out for the bottom side of Liquid / Gas pipe
ENGLISH
Pipe Drawing Out during Single / Series connection
For Heat Recovery System Installation
28
ENGLISH
Refrigerant pipe diameter from branch to branch (B, C,
D)
Refrigerant piping system
4 Outdoor Units
Example : 12 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe between Outdoor units : ARCNB41
Ⓕ : Connection branch pipe between Outdoor units : ARCNB31
Ⓖ : Connection branch pipe between Outdoor units : ARCNB21
Ⓗ : Header
Ⓘ : HR Unit
!
Slave 3
A4
Slave 2
A3
WARNING
* : Serial connection of HR units : Capacity sum of indoor units ≤
192.4 kBtu/hr
• Refer to the HR unit PCB part for the valve group control setting.
• It is recommended that difference in pipe lengths between an HR
unit and indoor units, for example difference in length of a, b, c,
and d, be minimized. The larger difference in pipe lengths, the
more different performance between indoor units.
• Piping length from outdoor branch to outdoor unit ≤ 10 m (33 ft),
equivalent length : max 13 m (43 ft)
* If the large capacity indoor units (Over 5 HP; using over Ø 15.88
(5/8) / Ø 9.52 (3/8)), are installed, it should be used the Valve
Group setting
Slave 1
A2
Master
A1
Refrigerant pipe diameter from branch to branch (B, C)
ODU Capacity
Master ≥ Slave 1 ≥ Slave 2 ≥ Slave 3
G
10
F
mo
r le
E
ss
A
1
D
B1
a
2
D
b
B
C1
I1
*
c
H
3
B2
D
"a"
C3
d
I3
C2
h
4
g
I2
D
D
"b"
i
I4
7
k
j
f
e
H
8
l
9
6
5
sealing
x
D
D
n
m
10
D
11
D
12
D
D
D
- Case 1 ("a") : Maximum height is 15 m (49.2 ft) if you install with Y
branch.
- Case 2 ("b") : Maximum height is 5 m (16.4 ft) in serial connection of
HR units.
Gas pipe [mm(inch)]
Downward indoor
unit total capacity
[kW(Btu/h)]
Liquid pipe
[mm(inch)]
Low pressure
High pressure
≤ 5.6(19 100)
< 16.0 (54 600)
< 22.4 (76 400)
< 33.6(114 700)
< 50.4(229 000)
< 61.6(210 600)
< 72.8(210 600)
< 100.8(344 000)
< 173.6(592 500)
< 184.8(630 700)
≤ 224.0(764 400)
Ø 6.35(1/4)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1 1/8)
Ø 28.58(1 1/8)
Ø 34.9(1 3/8)
Ø 34.9(1 3/8)
Ø 41.3(1 5/8)
Ø 44.5(1 3/4)
Ø 53.98(2 1/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 28.58(1 1/8)
Ø 28.58(1 1/8)
Ø 34.9(1 3/8)
Ø 41.3(1 5/8)
Ø 44.5(1 3/4)
Total pipe length = A + B + C1 + C2 + C3 + a + b + c + d
+ e + f + g + i + j + k + l + m + n ≤ 1 000 m (3 280 ft)
Longest pipe length
* Equivalent pipe length
A + B + C3 + D + k ≤ 150 m (200 m**) [(492 ft(656 ft**)] A + B + C3 + D + k ≤ 175 m (225 m**) [(574 ft(738 ft**)]
Longest pipe length after 1st branch
l
B + C3 + D + k ≤ 40 m(90 m**) [131 ft (295 ft)]
Difference in height(Outdoor Unit ↔ Indoor Unit)
H
H ≤ 110 m (361 ft)
Difference in height (Indoor Unit ↔ Indoor Unit)
h
h ≤ 40 m (131 ft)
Difference in height (Outdoor Unit ↔ Outdoor Unit)
h1
h1 ≤ 5 m (16.4 ft)
Difference in height(HR unit ↔ HR unit)
"a", "b"
a ≤ 15 m (49 ft), b ≤ 5 m (16 ft)
L
(**) Conditional Application (In case of D12 is the farthest in door)
Below condition must be satisfied for 40~90 m (131~295 ft) piping length
after first branch.
1 Diameter of pipes between first branch and the last branch should be
increased by one step, except if the pipe diameter B, C3 is same as
diameter A (main pipe diameter)
Ø 6.35 (1/4), Ø 9.52 (3/8), Ø 12.7 (1/2), Ø 15.88 (5/8), Ø 19.05 (3/4),Ø 22.2
(7/8), Ø 25.4* (1), Ø 28.58 (1-1/8), Ø 31.8* (1-1/4), Ø 34.9 (1-3/8), Ø 38.1*
(1-1/2)
* : If available on site, select this pipe size.
Otherwise it doesn’t need to be increased
2 While calculating total refrigerant piping length, pipe B, C3 length should
be calculated twice.
A + B x 2 + C3 x 2 + C1 + C2 + a + b + c + d + e + f + g + i + j + k + l
+ m + n ≤ 1 000 m (3281 ft)
3 Length of pipe from each indoor unit to the closest HR unit
(a, b, c, d, e, f, g, i, j, k, l, m, n) ≤ 40 m (131 ft)
4 [Length of pipe from outdoor unit to the farthest indoor unit D12 (B +
C3 + K)
- [Length of pipe from outdoor unit to the closest indoor unit D1 (C1 +
a)] ≤ 40 m (131 ft)
- * : Assume equivalent pipe length of Y branch to be 0.5 m (1.64 ft),
that of header to be 1 m (3.3 ft), calculation purpose
- It is recommended that indoor unit is installed at lower position than
the header.
- ** : To apply conditional application.
!
WARNING
When the equivalent length between a outdoor and the farthest
indoor unit is 90 m (295 ft) or more, main pipe(A) must be increased
one grade.
29
Pattern 3
Pipe diameter when pipe length is ≥ 90
m (295 ft) or when height differential
(ODU↔IDU) is > 50 m (164 ft)
Standard Pipe Diameter
ODU.
Capacity
(hp)
ENGLISH
Refrigerant pipe diameter from outdoor unit to first
branch. (A)
pressure High pressure Liquid Pipe Low pressure High pressure
Liquid Pipe Low
gas pipe
gas pipe
gas pipe
gas pipe
mm (inch) mm
mm (inch)
(inch) mm (inch)
mm (inch)
mm (inch)
8
Ø 9.52 (3/8) Ø 19.05 (3/4) Ø 15.88 (5/8) Ø 12.7 (1/2) Not increased Not increased
10
Ø 9.52 (3/8) Ø 22.2 (7/8) Ø 19.05 (3/4) Ø 12.7 (1/2) Not increased Not increased
12
Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Ø 15.88 (5/8) Not increased Not increased
14~16
Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Ø 15.88 (5/8) Not increased Not increased
HR1
1
2
3
4
48 k 48 k 48 k
48 k
• The maximum total capacity of indoor
units is 56.4 kW(192 kBtu/h).
Pattern 4
18~20 Ø 15.88 (5/8) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Ø 19.05 (3/4) Not increased Not increased
22
Ø 15.88 (5/8) Ø 28.58 (1-1/8) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Not increased Not increased
24
Ø 15.88 (5/8) Ø 34.9 (1-3/8) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Not increased Not increased
HR1
26~34 Ø 19.05 (3/4) Ø 34.9 (1-3/8) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Not increased Not increased
36
Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Not increased Not increased
B
38~60 Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 34.9 (1-3/8) Ø 22.2 (7/8) Not increased Not increased
62~64
66~96
1
2
3
4
12 k
12 k
12 k
12 k
Ø 22.2 (7/8) Ø 44.5 (1-3/4) Ø 41.3 (1-5/8) Ø 25.4 (1) Not increased Not increased
Ø 22.2 (7/8) Ø 53.98 (2-1/8) Ø 44.5 (1-3/4) Ø 25.4 (1) Not increased Not increased
• The maximum total capacity of a branch
pipe of HR unit is 14.1 kW(48 kBtu/h).
* If available on site, select pipe size according to upper table.
Otherwise it doesn’t need to be increased.
Pattern 5
Y branch, Header and HR unit connection pattern
Pattern 1
A
HR1
HR2
1
2
3
4
48 k
48 k
48 k
48 k
B
HR1
Pattern 6
HR2
1
2
3
4
48 k
48 k
48 k
48 k
• Impossible installation : Head branch pipe
HR1
HR unit
A
A
A
B
Pattern 2
HR1
A
B
1
2
3
4
5
6
7
7k
7k
7k
7k
7k
24 k
24 k
• Impossible installation : HR unit
Head branch
pipe
Y and Head branch pipe.
1
2
3
4
5
24 k
24 k
12 k
12 k
24 k
30
ELECTRICAL WIRING
*
HR2
- Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and
guidance of each electric power company.
HR3
A
HR1
1
2
48 k
48 k
3
4
5
6
48 k
48 k
48 k
48 k
!
• * : Serial connection of HR units : Capacity sum of indoor units ≤ 56.4 kW (192 kBtu/h)
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.
Pattern 8
*
HR2
A
A
- Install the Outdoor Unit communication cable away from the power
source wiring so that it is not affected by electric noise from the power
source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outdoor Unit.
HR1
B
1
2
48 k
48 k
!
3
4
5
6
7
8
12 k
12 k
12 k
12 k
24 k
24 k
• * : Maximum indoor units per a branch are 8 indoor units
Indoor Unit
Y Branch pipe
1
Head Branch pipe
Low pressure Gas pipe
High pressure Gas pipe
Liquid pipe
Outdoor
Unit
Gas pipe
HR1
Liquid pipe
Indoor
Unit
- Never connect the main power source to terminal block of
communication cable. If connected, electrical parts will be burnt out.
• Pipe installation from outdoor units to HR units
: 3 pipes(Low pressure Gas pipe, High pressure Gas pipe, Liquid pipe)
- Use the 2-core shielded wires for communication cable.( mark in
the figure below) If communication cable of different systems are
wired with the same multiplecore cable, the resultant poor
transmitting and receiving will cause erroneous operations. ( mark
in the figure below)
• Pipe installation from HR units to indoor units
: 2 pipes(Gas pipe, Liquid pipe)
Keep the 40 m (131 ft) distance from the first branch to the farthest
indoor.
Indoor
Unit
Indoor
Unit
Indoor
Unit
- Only the communication cable specified should be connected to the
terminal block for Outdoor Unit communication.
Indoor
Unit
2-core shielded cables
15 m(49 ft)
1) under 40 m (131 ft)
Y branch
Be sure to correct the outdoor unit to earth. Do not connect ground
wire to any gas pipe, liquid pipe, lightening rod or telephone earth
line. If earth is incomplete, it may cause an electric shock.
- Give some allowance to wiring for electrical part box of Indoor and
Outdoor Units, because the box is sometimes removed at the time of
service work.
B
A
CAUTION
5 m(16 ft)
ENGLISH
Pattern 7
1 Unit
Master
2 Unit 3 Unit 4 Unit
Slave 1 Slave 2 Slave 3
Keep the sum of indoor capacity under 56.4 kW(192 kBtu/h).
1) under 40 m (131 ft)
Indoor Indoor Indoor Indoor
Unit
Unit
Unit
Unit
Indoor
Unit
Indoor
Unit
Remote
control
Indoor Indoor Indoor Indoor
Unit
Unit
Unit
Unit
Master
Remote
control
Slave 1 Slave 2 Slave 3
Keep the sum of indoor capacity under 56.4 kW(192 kBtu/h).
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
31
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Remote
control
Remote
control
Master Slave 1 Slave 2
Master Slave
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Remote
control
!
Master Slave 1 Slave 2
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Master Slave 1 Slave 2
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Indoor
Unit
Remote
control
CAUTION
• Use the 2-core shielded wires for communication cables. Never use
them together with power cables.
• The conductive shielding layer of cable should be grounded to the
metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading
capacitor not only will deteriorate power factor improvement effect,
but also may cause capacitor abnormal heating. Therefore, never
install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2 %.
If it is greater the units lifespan will be reduced.
Multi-Core Cable
Precautions when laying power wiring
Master Slave 1 Slave 2 Slave 3
Indoor
Unit
Indoor
Unit
Use round pressure terminals for connections to the power terminal
block.
Round pressure terminal
Remote
control
Power cable
Remote
control
Master Slave 1 Slave 2 Slave 3
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
Master Slave
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Master Slave
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.
!
CAUTION
When the 400 volt power supply is applied to “N” phase by mistake,
check damaged parts in control box and replace them.
ENGLISH
Master Slave 1 Slave 2
Master Slave
32
ENGLISH
Control box and connecting position of wiring
Communication and Power Cables
- Remove all of the screws at front panel and remove the panel by
pulling it forward.
- Connect communication cable between main and sub outdoor unit
through the terminal block.
- Connect communication cables between outdoor unit and indoor
units through the terminal block.
- When the central control system is connected to the outdoor unit, a
dedicated PCB must be connected between them.
- When connecting communication cable between outdoor unit and
indoor units with shielded cable, connect the shield ground to the
earth screw.
Communication cable
- Types : shielded wires
- Cross section : 1.0 ~ 1.5 mm2 (1.55 × 10-3 ~ 2.32 × 10-3 in2)
- Maximum allowable temperature: 60 °C (140 °F)
- Maximum allowable cable length: under 1 000 m (3 281 ft)
Remote control cable
- Types : 3-core cables
Central control cable
Product type
Cable type
Diameter
ACP&AC Manager
2-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
AC Smart
2-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
Simple central controller
4-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
AC Ez
4-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
Front Panel
!
!
WARNING
The temperature sensor for outdoor air should not be exposed to
direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
UXA
UXB
Main Board
External Board
Main power line
terminal block
(Take care of the phase
sequence of 3-phases
4-wires power system)
CAUTION
In case of using the shielded wires, it should be grounded.
Separation of communication and power cables
- If communication and power cables are installed alongside each other
then there is a strong likelihood of operational faults developing due
to interference in the signal wiring caused by electrostatic and
electromagnetic coupling.
The tables below indicates our recommendation as to appropriate
spacing of communication and power cables where these are to be
run side by side
Current capacity of power cable
10 A
50 A
100 V or more
100 A
Exceed 100 A
!
Spacing
300 mm (11-13/16 inch)
500 mm (19-11/16 inch)
1 000 mm (39-3/8 inch)
1 500 mm (59-1/16 inch)
NOTE
• The figures are based on assumed length of parallel cabling up to
100 m [328 ft]. For length in excess of 100 m [328 ft] the figures
will have to be recalculated in direct proportion to the additional
length of cable involved.
• If the power supply waveform continues to exhibit some distortion
the recommended spacing in the table should be increased.
- If the cable are laid inside conduits then the following point must
also be taken into account when grouping various cable together
for introduction into the conduits
- Power cable(including power supply to air conditioner) and
communication cables must not be laid inside the same
- In the same way, when grouping the power wires and
communication cables should not be bunched together.
!
CAUTION
If apparatus is not properly earthed then there is always a risk of
electric shock, the grounding of the apparatus must be carried out
by a qualified person.
33
Point for attention regarding quality of the
public electric power supply
- Use a separate power supply for the Outdoor Unit and Indoor Unit.
- Bear in mind ambient conditions (ambient temperature,direct
sunlight, rain water,etc.) when proceeding with the wiring and
connections.
- The cable size is the minimum value for metal conduit wiring. The
power cord size should be 1 rank thicker taking into account the line
voltage drops. Make sure the power-supply voltage does not drop
more than 10 %.
- Specific wiring requirements should adhere to the wiring regulations
of the region.
- Power supply cords of parts of appliances for outdoor use should not
be lighter than polychloroprene sheathed flexible cord.
- Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
This equipment complies with respectively:
- EN/IEC 61000-3-11 (1) provided that the system impedance Zsys is
less than or equal to Zmax and
- EN/IEC 61000-3-12 (2) provided that the short-circuit power Ssc is
greater than or equal to the minimum Ssc alue at the interface point
between the user's supply and the public system. It is the
responsibility of the installer or user of the equipment to ensure, by
consultation with the distribution network operator if necessary, that
the equipment is connected only to a supply with respectively:
- Zsys less than or equal to Zmax and
- Ssc greater than or equal to the minimum Ssc value.
Standard combination of
outdoor units
Zmax (Ω)
Minimum Ssc Value
(kVA)
ARUM080LTE5
-
2 776
ARUM100LTE5
-
3 828
ARUM120LTE5
-
3 828
ARUM140LTE5
-
6 339
ARUM160LTE5
-
6 339
ARUM180LTE5
-
6 339
ARUM200LTE5
-
6 339
ARUM220LTE5
-
6 339
ARUM240LTE5
-
8 144
ARUM260LTE5
-
8 144
The thickness of Minimum wire (mm2 [ inch2])
Leakage
circuit breaker
Main power
Branch wire Ground wire (4P ELCB)
wire
1 Unit
2.5~16
[3.875 × 10-3
~2.48 × 10-2]
-
2.5~4
[3.875 × 10-3
~6.2 × 10-3]
Below 20~60 A
100 mA 0.1 s
2 Unit
16~50
[2.48 × 10-2
~7.75 × 10-2]
-
4~10
[6.2 × 10-3
~1.55 × 10-2]
Below 75~150 A
100 mA 0.1 s
3 Unit
50~95
[7.75 × 10-2
~1.4725 × 10-1]
-
10
[1.55 × 10-2]
Below 150~200 A
100 mA 0.1 s
4 Unit
95~120
[1.4725 × 10-1
~1.86 × 10-1]
-
10~16
[1.55 × 10-2
~2.48 × 10-2]
Below 200~250 A
100 mA 0.1 s
Ground wire
1 The power wire Between the master outdoor unit and slave1
outdoor unit - minimum : 6 mm2 [9.3 × 10-3 inch2]
2 The power wire Between the slave1 outdoor unit and slave2
outdoor unit - minimum : 4 mm2 [6.2 × 10-3 inch2]
3 The power wire Between the slave2 outdoor unit and slave3
outdoor unit - minimum : 2.5 mm2 [3.875 × 10-3 inch2]
h The above standard is CV wire standard.
h Please use the 3-phases 4-wires quadrupole Leakage circuit breaker
of circuit breaker.
!
WARNING
• Follow ordinance of your governmental organization for
technical standard related to electrical equipment, wiring
regulations and guidance of each electric power company.
• Make sure to use specified cables for connections so that no
external force is imparted to terminal connections. If
connections are not fixed firmly, it may cause heating or fire.
• Make sure to use the appropriate type of overcurrent protection
switch. Note that generated overcurrent may include some
amount of direct current.
!
(1) European / International Technical Standard setting the limits for
voltage changes, voltage fluctuations and flicker in public lowvoltage supply systems for equipment with rated current ≤75 A.
(2) European / International Technical Standard setting the limits for
harmonic currents produced by equipment connected to public lowvoltage systems with input current >16 A and ≤75 A per phase.
Field Wiring
Single outdoor unit
Outdoor
Power supply
(3 Ø 4 wires)
[Outdoor Unit]
(Main Switch)
R S T N
60 Hz
50 Hz
Voltage range(V)
Outdoor
Indoor
380 V
220 V
380-415 V 220-240 V
Switch
Indoor
Power supply
(1 Ø 2 wires)
L
Fuse
N
Power Line
(4 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
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.
Frequency
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
HR unit
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
In case of Heat
Recovery System
Communication Line
(3 Wires Cable)
[Indoor Units]
ENGLISH
Wiring of main power supply and equipment
capacity
34
ENGLISH
WARNING
!
!
• Indoor Unit ground wires are required for preventing electrical
shock accident during current leakage, Communication disorder by
noise effect and motor current leakage (without connection to
pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally. Running the product in reversed phase may break the
compressor and other parts.
Between Indoor and Master Outdoor unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12 V
• Indoor Unit ground wires are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect each
of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the product
is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor
and other parts.
Between Indoor and Master Outdoor unit
The communication cables between indoor unit and master outdoor
unit are possible to connect with BUS type or STAR type.
Master
Outdoor Unit
SODU. B SODU. A
3
4
HR unit
3
4
3
The GND terminal at the
main PCB is a ‘-’ terminal
for dry contact, it is not
the point to make ground
connection.
4
In case of Heat Recovery System
Series outdoor units
When the power source is connected
In series between the units.
Frequency
60 Hz
50 Hz
Outdoor
Power supply
(3 Ø 4 wires)
[Master]
[Slave 1]
Voltage range(V)
Outdoor
Indoor
380 V
220 V
380-415 V 220-240 V
[Slave 2]
[Slave 3]
(Main Switch)
R S T N
Switch
3
IDU. B
4
IDU. A
3
CEN. B
4
CEN. A
DRY1
DRY2
GND
3
12 V
Master
Outdoor Unit
4
HR unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12 V
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12 V
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12 V
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12 V
Master
Outdoor unit
Slave 1
Outdoor Unit
In case of Heat Recovery System
Slave 2
Outdoor Unit
Slave 3
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)
Fuse
Indoor
Power supply
(1 Ø 2 wires)
Example) Connection of transmission wire
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)
Pull Box
(Installer option)
Pull Box
(Installer option)
HR unit
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
In case of Heat
Recovery System
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.
When the power source is supplied to Each outdoor unit individually.
Outdoor
Power supply
(3 Ø 4 wires)
[Master]
[Slave 1]
[Slave 2]
[Slave 3]
(Main Switch)
R S T N
Switch
R S T N
R S T N
Switch
Fuse
Switch
Fuse
R S T N
Switch
Fuse
Fuse
Indoor
Power supply
(1 Ø 2 wires)
L
WARNING
N
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(4 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
HR unit
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
In case of Heat
Recovery System
Communication Line
(3 Wires Cable)
Frequency
60 Hz
50 Hz
Voltage range(V)
Outdoor
Indoor
380 V
220 V
380-415 V 220-240 V
[Indoor Units]
[BUS type]
[STAR type]
- Connection of communication
cable must be installed like
below figure between indoor
unit to outdoor unit.
- Abnormal operation can be
caused by communication
defect, when connection of
communication cable is installed
like below figure(STAR type).
35
ENGLISH
Example) Connection of power and communication cable (UXA)
Front Side
Bottom Side
Main power
terminal block
Ground wire
Main power
terminal block
When connecting
Main power lines
/ Ground wire from left side
When connecting
Communication wires
/ Ground wire from
front guide panel
Ground wire
Gap : Over
50 mm(1.97’’)
Gap : Over
50 mm(1.97’’)
Fix firmly with cable tie
or clamp cord not to be
displaced
When connecting
Communication wires
/ Ground wire from left side
When connecting
Main power lines
/ Ground wire from
front guide panel
Front Side
Main power line
connection
Main power
terminal block
Communication/Ground
wire connection
Ground wire
When connecting
Communication wires
/ Ground wire from
front guide panel
Gap : Over
50 mm(1.97’’)
When connecting
Main power lines
/ Ground wire from
front guide panel
ODU-IDU
Communication
cable
Main power
terminal block
Fix firmly with cable tie or
clamp cord not to be displaced
ODU-ODU
Communication
cable
Insulation sleeves
attachments
Ground wire
Communication/Ground
wire connection
Main power line
connection
Ground wire
!
Ground wire
CAUTION
It should be wiring power cables or communication cables to avoid
interference with the oil level sensor. Otherwise, That oil level sensor
would be operated abnormally.
ODU-IDU
Communication
cable
Main power
terminal block
Insulation sleeves
attachments
ODU-ODU
Communication
cable
Checking the setting of outdoor units
Ground wire
!
CAUTION
It should be wiring power cables or communication cables to
avoid interference with the oil level sensor. Otherwise, That oil
level sensor would be operated abnormally.
Checking according to DIP switch setting
- You can check the setting values of the Master outdoor unit from the
7 segment LED.
The DIP switch setting should be changed when the power is OFF.
Checking the initial display
The number is sequentially appeared at the 7 segment in 5 seconds
after applying the power. This number represents the setting condition.
Example) Connection of power and communication cable (UXB)
[Main Board]
Bottom Side
DIP switch
Main power
terminal block
7 segment
Ground wire
When connecting
Main power lines
/ Ground wire from left side
Gap : Over
50 mm(1.97’’)
When connecting
Communication wires
/ Ground wire from left side
SW01C
(Automatic Addressing Setting)
36
ENGLISH
Quick control Setting
In the factory setting, main PCB DIP switch setting is all “OFF”.
- Check and make sure that all the indoor unit model name are
ARNU******4.
- Change the main PCB DIP switch No. 3 “OFF → ON” like below
picture.
- Push the reset button.
DIP Switch
Setting For Heat Recovery Unit (Refer Only Heat Recovery Installation)
[Heat Recovery (HR) Unit Board]
#4 valve housing
#1 valve housing
7 segment
7-SEG
Reset button
SW05M
SW01M
SW02M
(DIP switch for setup of
The function of HR unit)
SW01M/SW03M/SW04M
(Switch for manual valve
addressing)
SW04M
SW03M
Switch for setup of HR Unit
• Initial display order
Order
①
②
③
④
⑤
⑥
No
8~24
10~24
10~24
10~24
8~96
3
38
46
22
40
⑦
⑧
Main function of SW02M
Mean
Master unit capacity
Slave 1 unit capacity
Slave 2 unit capacity
Slave 3 unit capacity
Total capacity
Heat Pump (Factory Setting)
380 V model
460 V model
220 V model
Full function
ON
Selection
S/W
Method for addressing valves of an HR
No.1
unit (Auto/Manual)
No.2 Model of HR unit
No.3 Model of HR unit
No.4 Model of HR unit
No.5 Valve group setting
SW02M
No.6 Valve group setting
Use only in factory
production (preset to “OFF”) Zoning
setting
Use only in factory
(“ON”)
No.8
production (preset to “OFF”)
No.7
• Example) ARUM620LTE5
62 hp 380 V Heat Pump System (Master unit: 18 hp, Slave
1: 16 hp, Slave 2: 14 hp, Slave 3: 14 hp)
①
②
③
④
⑤
⑥
⑦
⑧
18
16
14
14
62
3
38
40
1 Selection of the method for addressing valves of an HR unit
(Auto/Manual)
Master/Slave DIP switch setting
• Master Unit
DIP switch
setting
ODU Setting
Switch No.1 Off
• Slave Unit
DIP switch
setting
Heat Pump System
(Factory Setting)
Manual
ODU Setting
Slave 1
2 Setting the zoning control
DIP Switch setting
Slave 2
Slave 3
Normal
control
SW01M
Zoning
control
h Heat Recovery installation
① Turn on the DIP s/w No 4.
DIP switch
setting
Switch No.1 On
Auto
SW01M
ODU Setting
Setting Heat pump system or Heat Recovery system
(Installer Setting)
② The factory setting display is appeared “HP”.
③ Change “HP” into “HR” display pushing ▶ button and then push
confirm button.
④ Turn off the DIP s/w No 4. and Push reset button to restart the
system. (If you turn on the DIP s/w No 4, you can make sure “HR”
or “HP” display later.)
Turn the dip switch of
the zoning branch on.
Ex) Branch 1, 2 are
zoning control.
37
Models
(Unit: mm [inch])
Low pressure Gas pipe
I.D 22.2(7/8)
1
2
1
2
I.D 25.4(1)
3 4
1 2
3
I.D 19.05(3/4)
1
(For 3 branches)
PRHR032
PRHR032A
(For 4 branches)
PRHR042
PRHR042A
Initial
Setting
I.D 9.52(3/8)
3
80(3-5/32)
70(2-3/4)
321(12-5/8)
332(13-1/16)
I.D 25.4(1)
110(4-11/32)
I.D 22.2(7/8)
I.D 15.88(5/8)
2
I.D 19.05(3/4)
I.D 15.88 96
I.D 22.2(7/8)
(5/8) (3-25/32)
I.D 12.7(1/2)
74
I.D 9.52(3/8)
I.D 6.35(1/4) (2-29/32)
3
I.D 22.2(7/8)
I.D 28.58(1-1/8)
O.D 25.4(1) O.D 19.05(3/4)
1 2
I.D 19.05(3/4) I.D 22.2(7/8)
I.D 25.4(1)
I.D 12.7(1/2)
390(15-11/32)
413(16-1/4)
I.D 22.2(7/8)
O.D 19.05(3/4)
High pressure Gas pipe
I.D 19.05(3/4)
I.D 12.7(1/2)
2
I.D 12.7(1/2)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 19.05(3/4) I.D 12.7 83
(1/2) (3-9/32)
I.D 15.88(5/8)
ARBLB03321
(For 2 branches)
PRHR022
PRHR022A
Liquid pipe
I.D 19.05(3/4)
I.D 15.88(5/8)
421(16-9/16)
444(17-15/32)
3
I.D 12.7(1/2)
O.D 15.88(5/8)
I.D 9.52(3/8)
O.D 15.88(5/8)
3
2
I.D 12.7(1/2)
110(4-11/32)
70(2-3/4)
SW05M (Rotary S/W for addressing HR unit)
Must be set to '0' when installing only one HR unit.
When installing multiple HR units, address the HR units with
sequentially increasing numbers starting from '0'.
1 branches
Connected
2 branches
Connected
Ex) Installation of 3 HR units
3 branches
Connected
A B
A B
3 4
1 2
4 branches
Connected
3 4
1 2
A B
3 4
1 2
* Each model is shipped with the switches No.2 and No.3 pre-adjusted
as above in the factory.
WARNING
!
• If you want to use a PRHR032 or PRHR032A for 2 branches HR
unit after closing the 3rd pipes, set the DIP switch for 2
branches HR unit.
• If you want to use a PRHR042 or PRHR042A for 3 branches HR
unit after closing the 4th pipes, set the DIP switch for 3
branches HR unit.
• If you want to use a PRHR042 or PRHR042A for 2 branches HR
unit after closing the 3rd and 4th pipes, set the DIP switch for 2
branches HR unit.
• The unused port must be closed with a copper cap, not with a
plastic cap.
SW01M/SW03M/SW04M (DIP S/W and tact S/W for
manual valve addressing)
1 Normal setting (Non-Zoning setting)
- Set the address of the valve of the HR unit to the central control
address of the connected indoor unit.
- SW01M: selection of the valve to address
SW03M: increase in the digit of 10 of valve address
SW04M: increase in the last digit of valve address
- Prerequisite for manual valve addressing : central control address
of each indoor unit must be preset differently at its wired remote
control.
S/W No.
No.1
No.2
No.3
No.4
Setup
Manual addressing of valve #1
Manual addressing of valve #2
Manual addressing of valve #3
Manual addressing of valve #4
SW03M
SW03M
Increase in the digit of 10 of valve
address
SW04M
SW04M
Increase in the last digit of valve
address
4 Setting the Valve Group.
DIP S/W setting
Example
SW01M
Not control
No.1, 2 Valve
Control
4
3
2
1
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
4
3
2
1
Indoor Unit
Indoor Unit
Large capacity indoor unit
2 Zoning setting
No.2, 3 Valve
Control
4
3
2
1
Indoor Unit
Large capacity indoor unit
Indoor Unit
No.3, 4 Valve
Control
4
3
2
1
Large capacity indoor unit
Indoor Unit
Indoor Unit
4
3
2
1
Large capacity indoor unit
Large capacity indoor unit
No.1, 2 Valve
/
No.3, 4 Valve
Control
!
NOTE
If the large capacity indoor units are installed, below Y branch pipe should be
used.
I.D 6.35(1/4)
- Set the address of the valve of the HR unit to the central control
address of the connected indoor unit.
- SW01M : selection of the valve to address
SW03M : increase in the digit of 10 of valve address
SW04M : increase in the last digit of valve address
SW05M :Rotary S/W
- Prerequisite for manual valve addressing : central control address
of each indoor unit must be preset
differently at its wired remote control.
ENGLISH
Y branch pipe
3 Selection of the model of HR unit
38
ENGLISH
S/W No.
No.1
No.2
No.3
No.4
Setup
Manual addressing of valve #1
Manual addressing of valve #2
Manual addressing of valve #3
Manual addressing of valve #4
SW03M
SW03M
Increase in the digit of 10 of valve
address
SW04M
SW04M Increase in the last digit of valve address
SW01M
The Procedure of Automatic Addressing
Power On
Waiting 3 minutes
Press RED Button for 5 s.
(SW01C)
Automatic Addressing process start
7-segment LED
SW05M
= 88
SW05M Manual addressing of zoning indoor units
Don’t press RED Button
(SW01C)
Automatic Addressing
• Automatic addressing process end Numbers of indoor
unit connected are indicated for 30 seconds on
7-segment LED after completing process
Waiting about 2~7 minutes
The address of indoor units would be set by Automatic
Addressing
- Wait for 3 minutes after supplying power.
(Master and Slave outdoor units, indoor units)
- Press RED button of the outdoor units for 5 seconds. (SW01C)
- A “88” is indicated on 7-segment LED of the outdoor unit PCB.
- For completing addressing, 2~7 minutes are required depending on
numbers of connected indoor units
- Numbers of connected indoor units whose addressing is completed are
indicated for 30 seconds on 7-segment LED of the outdoor unit PCB
- After completing addressing, address of each indoor unit is indicated
on the wired remote control display window. (CH01, CH02, CH03, …
…, CH06 : Indicated as numbers of connected indoor units)
[Main Board]
DIP switch
7 segment
SW01C
(Automatic Addressing Setting)
7-segment LED
= 88
YES
OK
!
NO
Check the connections
of communication cable
Indoor address number is displayed on wired remote controller or
indoor unit display window. It is not an error message, will
disappeared when on/off button is pressed on remote controller
ex) Display of 01, 02, ..., 15 means connection of 15 indoor units
and Automatic addressing is completed normally.
CAUTION
• In replacement of the indoor unit PCB, always perform Automatic
addressing setting again (At that time, please check about using
Independent power module to any indoor unit.)
• If power supply is not applied to the indoor unit, operation error
occur.
• Automatic Addressing has to be performed after more than 3
minutes to improve indoor unit communition when initial power is
supplied.
• Please be sure that all the DIP switch (1~7) of master outdoor unit is
OFF before Automatic Addressing setting
39
Automatic pipe detection
1 Turn No.1 of DIP s/w SW02M of HR unit PCB off.
2 Confirm that the setting of No.2, 3 of SW02M corresponds with the
Type of the valve connection.
3 Reset the power of HR unit PCB
4 Master Out door unit PCB DIP switch on : No.5
5 Select the mode using ‘▶’, ‘◀’ Button : “Idu” Push the ‘●’ button
6 Select the “Id 5” function using ‘▶’, ‘◀’ Button :“Ath” or “”Atc”
Push the ‘●’ button.
Outdoor temperature is over 15 °C(59 °F) : “Atc” Using (If it fail, use
“Ath”)
Outdoor temperature is below 15 °C(59 °F) : “Ath” Using (If it fail,
use “Atc”)
7 Select the mode using ‘▶’, ‘◀’ Button : “Idu” Push the ‘●’ button
8 Select the “Id 6” function using ‘▶’, ‘◀’ Button :“StA” Push the ‘●
’ button
9 System is operated after “88” is displayed on 7-SEG of the outdoor
unit main PCB.
10 Pipe detection process is proceeded.
11 5~30 minutes are required depending on the number of the indoor
units and outdoor temperature.
12 The number of the indoor units connected is displayed on7Segment of the outdoor unit main PCB for about 1 minute
- For a HR unit, the number of the indoor units connected to each
HR unit is displayed.
- '200' is displayed in case of auto pipe detecting error, and auto
pipe detection process is completed after '88' is disappeared.
* Auto pipe detection function : the function that sets connection
relationship automatically between the indoor unit and HR unit.
!
Manual pipe detection
1 Enter the central control address into each indoor unit using its
wired remote controller.
2 Turn No.1 of DIP s/w SW02M of HR unit PCB on.
3 Reset the power of HR unit PCB.
4 On the HR unit PCB, manually set address of each valve of the HR
5
6
7
8
unit to the central control address of the indoor unit connected to
the valve.
Reset the power of outdoor unit PCB.
The number of the indoor unit installed is displayed after about 5
minutes.
Ex) HR ‡ The number of the indoor
Reset the power of outdoor unit PCB, HR unit.
Manual pipe detection is completed
!
WARNING
• In case that central controller is not installed, firstly set up central
controller’s setting to make address setting of indoor units.
• In case that central controller is installed, please set central control
address in wired remote control of indoor unit.
• HR unit’s manual pipe address is set by the central control adress of
indoor units.
• Address of valve which is not connected with indoor unit should be
set differently with the address of a valve which is indoor unit
connected(If address is overlapped valve will not work preperly)
• If there occurs some error during pipe detection process,it means
pipe detection process is not properly finished.
• If an error occurred, it means that manual pipe setting is not
completed.
• During 5 minutes after pipe detection process is completed, do not
turn off the main outdoor unit’s PCB to save the result of pipe
detection automatically.
WARNING
• Execute auto addressing and auto pipe detection again whenever the
indoor PCB and HR unit PCB is replaced.
- Operation error occurs unless power is supplied to the indoor and
HR units.
• Error No.200 occurs if the number of connected indoor units and that
of scanned indoor units are different.
• If auto pipe detection process fails, complete it with manual pipe
detection (see Manual pipe detection part).
• If auto pipe detection process is completed normally, manual pipe
detection is not required.
• If you want to do auto pipe detection again after auto pipe detection
fails, do after reset of outdoor unit by all means.
• During 5 minutes after pipe detection is completed, do not turn off
the main unit PCB to save the result of pipe detection automatically.
Flow chart of auto pipe detection process
Confirm indoor unit’s address setting
Outdoor unit is operated for 5~60 minues.
Turn No.1 of DIP s/w SW02M of HR unit
PCB off.
Confirm that the setting of No.2, 3 of
SW02M corresponds with the valve
connecion type.
Dose the setting
status satisfy indoor unit’s
configuration properly
during operation?
NO
Display error on outdoor unit PCB
Display error on HR unit PCB
YES
Reset the power of HR unit PCB
Master Outdoor unit’s PCB DIP switch on :
No.5
Outdoor unit PCB : HR ơ HR unit
number ơ Valve number
HR unit : '200'
The number of indoor units detected is
displayed for 30 seconds on the outdoor
unit PCB after outdoor unit stopped
Check the HR unit and indoor unit
Select the mode using ‘ȯ’, ‘ȭ’ Button :
“Idu” Push the ‘Ɨ’ button
Select the “Id 5” function using ‘ȯ’, ‘ȭ’
Button :“Ath” or ”Atc” Push the ‘Ɨ’ button.
Outdoor temperature is over 15 °C(59 °F) :
Select “Atc” (If fails, use “Ath”)
Outdoor temperature is below 15 °C(59 °F) :
Select “Ath”(If it fail, use “Atc”)
Is the number of
indoor units connected
and displayed
one equal?
YES
Completion of auto pipe detection process
NO
Pipe detection error occurs for 30
seconds.
Check the installation of status of
outdoor, indoor, HR unit
Select the mode using ‘ȯ’, ‘ȭ’ Button :
“Idu” Push the ‘Ɨ’ button
Retry auto pipe detection process
after Fixing wrong installation
Select the “Id 6” function using ‘ȯ’, ‘ȭ’
Button :“StA” Push the ‘Ɨ’ button
Incompletion of auto detection
process
88' is displayed on 7-SEG of the outdoor
unit main PCB
* It is possible to be generated mode changing noise of
heating and cooling which is normal.
There is no mode changing noise at normal operation.
ENGLISH
Setting For Heat Recovery Unit
(Refer Only Heat Recovery Installation)
40
ENGLISH
Example of manual valve addressing (Zoning
setting)
DIP-SW01
7-Segment
SW04C (X : cancel)
SW03C (ȯ: forward)
SW02C (ȭ: backward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW01D (reset)
Flow chart of manual addressing for pipe
detection
Execute in case of Auto pipe detection
failure
Wait for about 5 minutes.
Turn No.1 of SW02M of HR unit PCB on.
The number of the indoor units connected
is displayed.
Ex) HR रThe number of connected
indoor units
Reset the power of HR unit PCB.
Input the central control address at each
indoor unit using wired remote controller.
Is the number
of indoor units connected with the
outdoor unit and displayed
number equal?
Set the address of each valve manually
by referring indoor unit’s central control
address connected with.
YES
Reset the power of outdoor unit PCB.
Completion of manual pipe detection
process
NO
Check the central control address of
indoor and HR unit.
Make sure that reset the outdoor
Unit’s power after setting central
control address of indoor unit’s
(In case that an indoor unit of central control address "11" is connected
to a valve #1 of an HR unit)
Zoning control is connecting 2 or more indoor units at one pipe of HR
unit. In case of Zoning control, in order to set controls with multiple
indoor units connection uses the rotary switch. Namely, only the rotary
switch changes from same valve set condition and set indoor units
connection.
1 On DIP switch of the corresponding valves and sets the rotary
switch at 0.
2 Setting the number with tact switch.
3 In case of addition of indoor units to same port, increases 1 with the
rotary switch and sets number with tact switch.
4 In case of checking the number which the corresponding valve is
stored, turn on DIP switch and set the number of rotary switch.
5 Indoor units set available 7 per a port(rotary switch 0~6), in case of
setting above of 7 with rotary switch, it will display error.
6 Setting the rotary switch on original condition(HR unit number set
conditions) after all finishing a piping setting.
7 The rotary switch set value of above number of indoor units which
is connected with FF and prevents a malfunction.
(Example: The case where 3 indoor units is connected in piping 1,
sets from rotary switch 0, 1, 2 and 3, 4, 5 with FF set)
- Prerequisite for manual valve addressing: central control address of
each indoor unit must be preset differently at its wired remote
control.
No.
Example of manual valve addressing (NonZoning setting)
(In case that an indoor unit of central control address "11" is connected
to a valve #1 of an HR unit)
- Prerequisite for manual valve addressing: central control address of
each indoor unit must be preset differently at its wired remote
control.
No.
Display and setup
1
7-SEG
SW01M
SW03M
SW04M
2
7-SEG
SW01M
SW03M
SW04M
3
7-SEG
SW01M
SW03M
SW04M
4
7-SEG
SW01M
SW03M
SW04M
5
7-SEG
SW01M
SW03M
SW04M
Display and setup
Setup and Contents
0
1
7-SEG
SW01M
SW03M
SW04M SW05M
0
2
7-SEG
SW01M
SW03M
SW04M SW05M
Setup and Contents
- Operation: None
- Display: None
- Operation: Turn DIP S/W No.1 on to
address valve #1
- Display: Existing value saved in
EEPROM is displayed in 7-SEG.
- Operation: Set the digit of 10 to the
number in Group High data of the wired
remote control connected to the
corresponding indoor unit to the valve
#1 by pressing left tack S/W.
- Display: Digit increasing with the times
of pressing tack S/W is displayed in left
7-SEG
- Operation: Set the digit of 1 to the
number in Group Low data of the wired
remote control connected to the
corresponding indoor unit to the valve
#1 by pressing right tack S/W.
- Display: Digit increasing with the times
of pressing tack S/W is displayed in
right 7-SEG
- Operation: Turn DIP S/W No.1 off to
save the address of valve #1
- Display: "11" displayed in 7-SEG
disappears
- Above setup must be done for all HR unit valves.
- The valve that is not connected with any indoor unit should be
addressed with any other number than used address numbers of the
valves connected with indoor units.
(The valves does not work if the address numbers are same.)
0
3
7-SEG
SW01M
SW03M
SW04M SW05M
7-SEG
SW01M
SW03M
SW04M SW05M
1
4
1
5
7-SEG
SW01M
SW03M
SW04M SW05M
1
6
7-SEG
SW01M
SW03M
SW04M SW05M
0
7
7-SEG
SW01M
SW03M
SW04M SW05M
- Operation: None
- Display: None
- Operation : Turn DIP S/W No.1 on to
address valve #1
- Display : Existing value saved in
EEPROM is displayed in 7-SEG.
- Operation : Set the digit of 10(1) to the
number in Group High data of the wired
remote control connected to the
corresponding indoor unit to the valve
#1 by pressing left tack S/W.
- Display : Digit increasing with the times
of pressing tack S/W is displayed in left
7-SEG.
- Operation : SW05M : 1
- Display : Display former value.
- Operation : Setting No. using SW03M
and SW04M, SW05M : 1
- Display : Display setting value.
- Operation : Turn DIP S/W No.1 off to
save the address of valve #1
- Display : "11" displayed in 7-SEG
disappears.
- Operation : Return valve of addressing
HR unit.
- Display : None
- Above setup must be done for all HR unit valves.
- The valve that is not connected with any indoor unit should be
addressed with any other number than used address numbers of the
valves connected with indoor units.
(The valves does not work if the address numbers are same.)
41
Group Number setting
(In case that an indoor unit of central control address "11" is connected
to a valve #1 of an HR unit)
Group Number setting for Indoor Units
- Confirm the power of whole system(Indoor Unit, Outdoor Unit) is
OFF, otherwise turn off.
- The communication cables connected to CEN.A and CEN.B terminal
should be connected to central control of Outdoor Unit with care for
their polarity (A-A, B-B).
- Turn the whole system on.
- Set the group and Indoor Unit number with a wired remote control.
- To control several sets of Indoor Units into a group, set the group ID
from 0 to F for this purpose.
No.
Display and setup
Setup and Contents
7-SEG
SW01M
- Operation: Turn DIP S/W No.1 on.
- Display: "11" is displayed in 7-SEG
7-SEG
SW01M
- Operation: Turn DIP S/W No.1 off.
- 7-SEG disappeared
1
2
Identification of Manual Valve ID (Address)
No.
Display and setup
1
7-SEG
SW01M
Outdoor Units (External PCB)
Setup and Contents
- Operation: more than 2 DIP switches
turned on.
- Display: "Er" is displayed in 7-SEG
SODU.B SODU.A
IDU.B
IDU.A
CEN.B
B(D)
Method of checking the pipe detection result
at outdoor unit
1 Wait for 5 minutes, after Pipe detection is completed.
2 Turn on the No.10, 14, 16 DIP S/W of SUB PCB at master unit
3 Check the data on 7- segment, switching rotary 01, 02.
ROTARY 01 ROTARY 02
CEN.A
DRY1
DRY2
GND
12V
A(C)
Example) Group number setting
1 F
Group Indoor unit
1st number indicate the group number
2nd number point out indoor unit number
0
0
Group recognizing the central controller
No.0 group (00~0F)
No.1 group (10~1F)
No.2 group (20~2F)
No.3 group (30~3F)
No.4 group (40~4F)
No.5 group (50~5F)
No.6 group (60~6F)
No.7 group (70~7F)
No.8 group (80~8F)
No.9 group (90~9F)
No. A group (A0~AF)
No. B group (B0~BF)
No. C group (C0~CF)
No. D group (D0~DF)
No. E group (E0~EF)
No. F group (F0~FF)
The connected port number of HR
unit
The connected HR unit number
The auto addressing number of
indoor unit (digit of 1)
The auto addressing number of
indoor unit (digit of 10)
Setting method of Master indoor unit in zoning
1 Turn DIP switch 5, 6, 10 on at system off.
2 Set the left Ratary switch for HR unit.(Rotary switch No. "0" ‘ HR
unit No. "1")
3 Set the right Ratary switch for IDU unit.(Rotary switch No. "0" ‘ HR
unit branch No. "1")
4 Display the Master IDU No. of the HR unit on 7segment.(Default
display is "00" on 7segment)
5 Press the black button.(The IDU No. increase every 1 second in the
zoning )
6 Set the Master IDU(Press the red button during 1.5 seconds stop
twinkling)
ROTARY 01 ROTARY 02
!
WARNING
• Valve address and central control address of its corresponding
indoor unit should be set identical in manual addressing.
7 segment
EX)
0
0
No. of Indoor unit.
No. of HR unit branch.
No. of HR unit.
HR unit
Valve (04)
Valve (03)
Valve (02)
Valve (01)
Indoor unit (04)
Indoor unit (03)
Indoor unit (02)
Indoor unit (01)
Central control address
!
CAUTION
• Waiting for 80 seconds after power on.
• The zoning information and Master IDU information remove from
EEPROM after Auto-addressing.
• If there is installed the central control, it is impossible setting of
Master IDU in zoning.
Setting the optional function
Select the mode/function/option/value using ‘▶’, ‘◀’ Button and
confirm that using the ‘●’ button after DIP switch No.5 is turned on.
DIP-SW01
7-Segment
SW04C (X : cancel)
SW03C (ȯ: forward)
SW02C (ȭ: backward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW01D (reset)
ENGLISH
Example of checking valve address
42
ENGLISH
Optional Mode Selection
Content
FDD
Display (◎)
Fdd
Function Selection
Content
Automatic Refrigerant
Charging (Cooling)
Automatic Refrigerant
Charging (Heating)
Refrigerant Amount
Check (Cooling)
Refrigerant Amount
Check (Heating)
Automatic system
check mode(cooling
or heating)
All IDU operation
(Cooling)
All IDU operation
(Heating)
Cool & Heat
Selector
High Static Pressure
Compensation
mode
Night Low Noise
mode
Overall Defrost
mode
ODU address
setting
Snow Removal &
Rapid Defrost
Airflow Adjusting
for IDU (Heating
capacity up)
Target Pressure
Adjusting
Low Ambient Kit
Installation
Func
High Efficiency
Mode (Cooling
Operation)
Auto Dust Removal
Mode
Compressor Max.
Frequency Limit
ODU Fan Max.
RPM Limit Mode
settting
Smart Load Control
Mode setting
Humidity Reference
Mode setting
Central Control
Connection at
Indoor Unit side
Compressor Input
Current Limit mode
Option Selection
Display
(◀, ▶ ’ ◎)
Default
Optional
(◀, ▶ ’ ◎)
Fd 1
-
-
Fd 2
-
-
Fd 3
-
-
Fd 4
-
-
!
Remarks
CAUTION
• To perform the otional funtion should be sure that All the IDU is off
mode, unless the function will not be performed.
* Refer FDD
guidance
Cool & Heat selector
Mode setting method
Master unit PCB DIP switch on : No.5
Fd 7
-
-
Fd 8
-
-
Fd 9
-
-
Fn 1
oFF
oFF,
oP1~oP2
Fn 2
oFF
oFF,
oP1~oP7
Fn 3
oFF
oFF,
oP1~oP12
Fn 4
North
America: oFF
Europe: oFF
Tropical: oN
on, oFF
Fn 5
0
254
oFF
oFF,
oP1~oP3
Fn 6
Compulsory
Operation for
1 hour
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn1” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”,“op2” Push the ‘●’ button
Cool & Heat Selection mode is set
Function setting
Switch Control
Function
Fn 7
oFF
on, oFF
Switch
(Up)
Fn 8
oFF
oFF,
oP1~oP6
Right side
(On)
Left side
(On)
Not operate
Cooling
Cooling
Fn 9
oFF
on, oFF
Right side
(On)
Right side
(On)
Not operate
Heating
Heating
Fn 10
oFF
on, oFF
Left side
(Off)
-
Not operate
Fan mode
Off
oFF,
oP1~oP5
oFF,
oP1~oP9
Fn 11
oFF
Fn 12
oFF
Fn 13
oFF
oFF,
oP1~oP7
Fn 14
oFF
oFF,
oP1~oP3
Fn 16
on
on, oFF
Fn 19
oFF
oFF, on
Fn 20
oFF
oFF,
oP1~oP10
Power
Consumption
Display on wired
remote controller
Fn 21
SPL0
SPL0, SPL1
[Pd10~Pd11]
Overall Defrost
Operating in Low
temperature
(Heating)
Fn 22
oFF
on, oFF
Optional Base panel
Heater
Fn 23
oFF
on, oFF
* Refer
Comfort
Cooling
guidance
User
Idu
Comfort Cooling
Mode setting
Id 10
EAch
Service
SvC
Vaccum Mode
SE 3
vACC
-
Saving in
EEPROM
Left side
Switch
(Down)
oFF
op1(mode)
op2(mode)
Right side
Switch (Up)
Switch (Down)
!
CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• If use a function, first install a Cool & Heat selector.
Saving in
EEPROM
1time / 1
Selection
* Functions save in EEPROM will be maintained continuously, though
the system power was reset.
43
Time Settings
Step
op1
op2
op3
op4
op5
op6
op7
op8
op9
op10
op11
op12
This function secures the air flow rate of ODU, in case static pressure
has been applied like using duct at fan discharge of ODU.
Static pressure compensation mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn2” Push the ‘●’ button
Judgment Time(Hr)
Operation Time(Hr)
8
9
6.5
10.5
5
12
8
9
6.5
10.5
5
12
8
9
6.5
10
5
12
Continuous operation
Continuous operation
Continuous operation
Noise
Chassis
Capacity
Step
op1~op3, op10
op4~op6, op11
op7~op9, op12
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op7” Push the ‘●’ button
Start the Static pressure compensation mode :
Save the selected option value in EEPROM
!
FAN Maximum RPM of each step
Chassis
Max. RPM
Standard
Overload / Low
Temperature
op1
op2
op3
op4
op5
op6
op7
UXA
880
UXB
1 000
1 000
1 150
860
840
820
800
780
760
740
950
900
850
800
750
700
650
Night Low Noise Function
In cooling mode, this function makes the ODU fan operate at low RPM
to reduce the fan noise of ODU at night which has low cooling load.
UXA
8~12 hp
55
52
49
UXB
14~20 hp
Noise(dBA)
59
56
53
CAUTION
• Request installer to set the function during installation.
• If ODU RPM changes, cooling capacity may go down.
Overall defrost mode
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn4” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”~“oFF” Push the ‘●’ button
Night low noise function setting method
Overall defrost mode is set
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn3” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op12” Push the ‘●’ button
Mode setting
- on: Operate overall defrost
- off: Operate partial defrost
!
CAUTION
• Ask an authorized technician to setting a function.
Setting the ODU address
Mode setting method
Start the Night low noise function :
Save the selected option value in EEPROM
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn5” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“0”~“255” Push the ‘●’ button
ODU address is set
22~26 hp
60
57
55
ENGLISH
High Static Pressure Compensation mode
44
ENGLISH
CAUTION
!
Target pressure adjusting
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
Snow removal & rapid defrost
Mode setting method
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn8” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“HEAT”, “COOL” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn6” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1”~“op4” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op3” Push the ‘●’ button
Target pressure is set
Setting
Mode is set
Mode
Mode setting
Mode
oFF
Not setting
op1
Snow removal mode
op2
Rapid defrost mode
op3
Snow removal mode. + Rapid defrost mode.
CAUTION
!
Heat
op1 Increase capacity
setting
Decrease power
consumption
Decrease power
consumption
Decrease power
consumption
op2
op3
op4
!
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
Setting Capacity Up Airflow Adjusting for IDU
(Heating)
If the operation of indoor unit is more than 130 %, the air flow is
operated as low in the all indoor units.
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn7” Push the ‘●’ button
Condensing Evaporating
temperature temperature
Cool
variation
variation
+2 °C
-3 °C
Increase capacity
(35.6 °F)
(37.4 °F)
+2 °C
-1.5 °C
Increase capacity
(35.6 °F)
(-34.7 °F)
Decrease power
-4 °C
+2.5 °C
consumption
(-39.2 °F)
(36.5 °F)
Decrease power
-6 °C
-4.5 °C
consumption
(-42.8 °F)
(-40.1 °F)
Purpose
CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• Change a power consumption or capacity.
Low Ambient Kit
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn9” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”,“oFF” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”~“oFF” Push the ‘●’ button
Low Ambient Kit Mode is set
IDU capacity adjusting is set
h Reference for functional logic of I/O Module
Step
OFF
ON
!
Mode
Not setting
Low capacity mode
CAUTION
• Ask an authorized technician to setting a function.
45
Compressor Max. Frequency Limit
Target low pressure will change according to ODU temperature during
the cooling operation.
Mode setting method
Mode setting method
Master unit PCB DIP switch on : No.5
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn 12” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn10” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”,“op9” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”,“oFF” Push the ‘●’ button
Cool & Heat Selection mode is set
High Efficiency Mode is set
Function setting
Auto Dust Removal Mode
Setting
oFF
op1
op2
op3
op4
op5
op6
op7
op8
op9
The ability to set reverse run outdoor fan to remove dust, heat
exchanger.
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn11” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op5” Push the ‘●’ button
!
CAUTION
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
Auto Dust Removal Mode is set
Mode Setting
Setting
op1
Operation Operating Repeat
time
time
cycle
Stop
+2 hour
5 minutes 2 hour
Inverter (Hz)
143 Hz
135 Hz
128 Hz
120 Hz
113 Hz
105 Hz
98 Hz
90 Hz
83 Hz
Detail of function
After product stopped 2 hour, fan operating 5
min(Repeated every 2 hours)
op2
after product stopped 5 minutes, fan
stop
Twice in
3 minutes
operating 3 min (Limited to two times within
+5 minutes
2 hour
2 hours)
op3
stop
after product stopped 2 hour, fan operating 5
3 minutes 1 time
+5 minutes
min(Repeated every 2 hours)
op4
after product stopped 5 minutes, fan
Stop
1 minutes 1 time operating 3 min(when io module
+1 minutes
connection/one-time operation)
op5
Stop
Low
1 minutes
+1 minutes
speed
after product stopped 1 minutes, fan
operating 1 min(every time the product stops)
ODU Fan Max. RPM Limit
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn13” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op7” Push the ‘●’ button
ODU Fan Max. RPM Limit Mode is set
ENGLISH
High Efficiency Mode (Cooling Operation)
46
ENGLISH
MAX. RPM Limit Setting
Chassis
Fan MAX. RPM
Limit (RPM)
UXA
880
-20
-40
-60
-80
-100
-120
-140
oFF
oP1
oP2
oP3
oP4
oP5
oP6
oP7
UXB
1 000
-50
-100
-150
-200
-250
-300
-350
Mode setting
- on:using humidity sensor
- oFF:not setting
<Using of humidity sensor>
- When used cooling operation of SLC function,it will improve energy
effcience because evaporation temperature wll be decreased
- When used heating operation in case of high humidity condition,
deforest will be delayed because target high/low pressure will be
changed.
SLC (Smart Load Control)
Central Control Connection at Indoor Unit side
Function for set the variable target pressure which for the high
efficiency and comport operation depend on ODU load.
Mode setting method
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn14” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op3” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn16” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“Fn19” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”,“oFF” Push the ‘●’ button
SLC(Smare Lode Control) Mode is set
Central Control Connection at Indoor
Unit side Mode is set
SLC(Smare Lode Control) Mode
Setting
oFF
oP1
oP2
oP3
Mode
Not Setting
Smooth Mode
Normal Mode
Peak Mode
Detail of function
Slowly control, a target pressure value
Normal control, a target pressure value
Fast control, a target pressure value
Compressor Input Current Limit
System Input Current Control
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Humidity Reference
Mode setting method
Master unit PCB DIP switch on : No.5
Select the Function using ‘▶’, ‘◀’ Button :
“Fn20” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~”op10” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn16” Push the ‘●’ button
Compressor Input Current Limit mode is set
Compressor Input Current Limit
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“on” Push the ‘●’ button
Humidity Reference Control mode is set
Mode
op1
op2
op3
op4
op5
op6
op7
op8
op9
op10
Compressor Input Current Limit
95 %
90 %
85 %
80 %
75 %
70 %
65 %
60 %
55 %
50 %
47
CAUTION
Base pan Heater operation
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• If use a function, capacity may go down.
Power Consumption Display on wired remote
controller
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn23” Push the ‘●’ button
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“on” Push the ‘●’ button
Base pan Heater operation mode is set
Select the Function using ‘▶’, ‘◀’ Button :
“Fn21” Push the ‘●’ button
!
Select the Option using ‘▶’, ‘◀’ Button :
“SPL0”,“SPL1”,”Pd10”,”Pd11”Push the ‘●’
button
Power Consumption Display on wired remote
controller Mode is set
Setting
Detail of function
SPL0
Not used Smart plug logic
SPL1
Using smart plug logic
Pd10
Not installation
Pd11
PDI was installed
Overall Defrost Operating in Low temperature
(Heating)
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn21” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn22” Push the ‘●’ button
Overall Defrost Operating in Low Mode is set
Setting
Detail of function
Defualt
OFF
Setting
ON/OFF Control
CAUTION
• Function to prevent freezing of ODU base pan in a cold area.
• Heater is accesory.(Sold separately)
Comfort Cooling operation
It is function to reduce the ODU energy consumption by the continuou
s operation without thermo off.
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Idu” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Id10” Push the ‘●’ button
EEV pulse appearing
(seg1, seg2:Idu No./seg3, seg4:Mode)
Select the Function using ‘▶’, ‘◀’ Button :
Idu No. setting and Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
Mode setting and Push the ‘●’ button
*Mode can be set 0~3 (”0” is no setting)
Setting of continous cooling operation
Setting of continous cooling operation
Mode setting
0
1
2
3
Effect
No setting
Cooling capacity low,Power consumption low
Cooling capacity mid,Power consumption mid
Cooling capacity high,Power consumption high
ENGLISH
!
48
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, 3rd LED of 7-segment indicates error number, 4th LED indicates unit number.(* = 1: Master, 2: Slave 1, 3: Slave 2, 4: Slave 3)
Ex) 1051 : Error occurrence with error number 105 at No. 1 outdoor unit (=Master unit)
In case of indoor unit error occurrence, the error number is only shown at remote controller
without 7 segment LED of outdoor unit.
Ex) CH → 01 : Error occurrence with error number 01 (at remote controller)
In case of compressor error occurrence, 7 segment LED of outdoor unit control board
will display its error number alternately with compressor number.
Ex) 213 → C23 : It means that compressor error occurred with Error No. 21 at No. 3 Outdoor unit (=Slave 2)
Repeat
Error No.
Error No. of Unit
Error No. of Compressor
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Indoor unit related error
Display
Outdoor unit related error
ENGLISH
Self-Diagnosis Function
Title
Cause of Error
0
1
-
Air temperature sensor of indoor unit
Air temperature sensor of indoor unit is open or short
0
2
-
Inlet pipe temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit is open or short
Failing to receive wired remote controller signal in indoor unit PCB
0
3
-
Communication error : wired remote controller ↔
indoor unit
0
4
-
Drain pump
Malfunction of drain pump
Failing to receive outdoor unit signal in indoor unit PCB
0
5
-
Communication error : outdoor unit ↔ indoor unit
0
6
-
Outlet pipe temperature sensor of indoor unit
Outlet pipe temperature sensor of indoor unit is open or short
0
8
-
Hydro Kit Hot water storage tank Temperature
sensor
Pipe temperature sensor is open or short
0
9
-
Indoor EEPROM Error
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
1
0
-
Poor fan motor operation
Disconnecting the fan motor connector / Failure of indoor
fan motor lock
1
1
-
Communication error : Hydro Kit Indoor unit ↔
Inv.PCB
Failing to receive Inv. PCB signal in indoor unit
1
2
-
Hydro Kit Inv.PCB error
Hydro Kit Inv.PCB error
1
3
-
Hydro Kit Solar heat piping temperature sensor
error
Pipe temperature sensor is open or short
1
4
-
Hydro Kit Indoor unit Flow switch error
Flow switch flow detection error
1
5
-
Hydro Kit Liquid pipe Strange overheat Error
Temperature sensor defective or hot water inflow
1
6
-
Hydro KitIndoor unit Inlet and Outlet pipe
Temperature sensor Error
Pipe temperature sensor is open or short
1
7
-
Hydro Kit Indoor unit Inlet pipe Temperature
sensor Error
Outside air Introduction duct Inlet pipe
Temperature sensor Error
Pipe temperature sensor is open or short
1
8
-
Hydro Kit Indoor unit Outlet pipe Temperature
sensor Error
Pipe temperature sensor is open or short
2
1
*
Outdoor Unit Inverter Compressor IPM Fault
Outdoor Unit Inverter Compressor Drive IPM Fault
2
2
*
Inverter PCB Input Over Current(RMS) of Master
Outdoor Unit
Outdoor Unit Inverter PCB Input Current excess (RMS)
2
3
*
Outdoor Unit Inverter Compressor DC Link Low or
High Voltage
System is turned off by Master Outdoor Unit DC Link Low/High
Voltage.
2
4
*
Outdoor Unit High Pressure Switch
System is turned off by Master Outdoor Unit high pressure switch.
2
5
*
Outdoor Unit Input Voltage High/ Low Voltage
Over 537 V or below 247 V (ARUM***LTE5)
Over 310 V or below 143 V (ARUM***BTE5)
Over 598 V or below 320 V (ARUM***DTE5)
• 1 : Master outdoor unit error, 2 : salve 1 outdoor unit error
• 3 : slave 2 outdoor unit error, 4 : slave 3 outdoor unit error
49
Outdoor unit related error
Title
Cause of Error
2
6
*
Outdoor Unit Inverter Compressor Start Failure
The first start failure by Outdoor Unit Inverter Compressor
abnormality or Compressor locked
2
9
*
Outdoor Unit Inverter Compressor Over Current
Outdoor Unit Inverter Compressor Fault OR Drive Fault
3
2
*
Outdoor Unit Inverter Compressor1 High
Discharge Temperature
Outdoor Unit Inverter Compressor1 High Discharge Temperature
3
3
*
Outdoor Unit Inverter Compressor2 High
Discharge Temperature
Outdoor Unit Inverter Compressor2 High Discharge Temperature
3
4
*
High Pressure of Outdoor Unit
High Pressure of Outdoor Unit
3
5
*
Low Pressure of Outdoor Unit
Low Pressure of Outdoor Unit
4
0
*
Outdoor Unit Inverter Compressor CT Sensor Fault
Outdoor Unit Inverter Compressor CT Sensor open or short
4
1
*
Outdoor Unit Inverter Compressor1 Discharge
Temperature Sensor Fault
Outdoor Unit Inverter Compressor Discharge Temperature
Sensor open or short
4
2
*
Outdoor Unit Low Pressure Sensor Fault
Outdoor Unit Low Pressure Sensor open or short
4
3
*
Outdoor Unit High Pressure Sensor Fault
Outdoor Unit High Pressure Sensor open or short
4
4
*
Outdoor Unit Air Temperature Sensor Fault
Outdoor Unit Air Temperature Sensor open or short
Outdoor Unit Heat Exchanger Temperature Sensor(Front side)
open or short
4
5
*
Outdoor Unit Heat Exchanger Temperature Sensor
(Front side) Fault
4
6
*
Outdoor Unit Suction Temperature Sensor Fault
Outdoor Unit Suction Temperature Sensor open or short
4
7
*
Outdoor Unit Inverter Compressor2 Discharge
Temperature Sensor Fault
Outdoor Unit Inverter Compressor2 Discharge Temperature
Sensor open or short
4
9
*
Outdoor Unit Faulty IPM Temperature Sensor
Outdoor Unit IPM Temperature Sensor short/open
5
0
*
Omitting connection of R, S, T power of Outdoor
Unit
Omitting connection of outdoor unit
5
1
*
Excessive capacity of indoor units
Excessive connection of indoor units compared to capacity of
Outdoor Unit
5
2
*
Communication error : inverter PCB ’ Main PCB
Failing to receive inverter signal at main PCB of Outdoor Unit
5
3
*
Communication error : indoor unit ’ Main PCB of
Outdoor Unit
Failing to receive indoor unit signal at main PCB of Outdoor Unit.
5
7
*
Communication error : Main PCB ’ inverter PCB
Failing to receive signal main PCB at inverter PCB of Outdoor Unit
6
0
*
Inverter PCB EEPROM Error of Master Outdoor Unit
Access Error of Inverter PCB of Outdoor Unit
6
2
*
Outdoor Unit Inverter Heatsink High Temperature
System is turned off by Outdoor Unit Inverter Heatsink High
Temperature
6
5
*
Outdoor Unit Inverter Heatsink Temperature
Sensor Fault
Outdoor Unit Inverter Heatsink Temperature Sensor open or
short
6
7
*
Outdoor Unit Fan Lock
Restriction of Outdoor Unit
7
1
*
Inverter CT Sensor Error of Master Outdoor Unit
Inverter CT Sensor open or short of Outdoor Unit
7
5
*
Outdoor Unit Fan CT Sensor Error
Outdoor Unit Fan CT Sensor open or short
7
7
*
Outdoor Unit Fan Over Current Error
Outdoor Unit Fan Current is over 6 A
7
9
*
Outdoor Unit Fan Start Failure Error
The first start failure by Outdoor Unit Fan abnormality or Fan
locked
8
6
*
Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Outdoor Unit Main MICOM and
EEPROM or omitting EEPROM
8
7
*
Outdoor Unit Fan PCB EEPROM Error
Communication Fail Between Outdoor Unit Fan MICOM and
EEPROM or omitting EEPROM
1
0
4
*
Communication Error Between Outdoor Unit and
Other Outdoor Unit
Failing to receive Slave Unit signal at main PCB of Outdoor Unit
1
0
5
*
Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Outdoor unit
1
0
6
*
Outdoor Unit Fan IPM Fault Error
Instant Over Current at Outdoor Unit Fan IPM
ENGLISH
Display
50
ENGLISH
Network error HR Unit related error
Outdoor unit related error
Display
Title
Cause of Error
1
0
7
*
Outdoor Unit Fan DC Link Low Voltage Error
Outdoor Unit Fan DC Link Input Voltage is under 380 V
1
1
3
*
Outdoor Unit Liquid pipe Temperature Sensor Error
Liquid pipe temperature sensor of Outdoor Unit is open or short
1
1
4
*
Outdoor Unit Subcooling Inlet Temperature
Sensor Error
Outdoor Unit Subcooling Inlet Temperature Sensor Error
1
1
5
*
Outdoor Unit Subcooling Outlet Temperature
Sensor Error
Outdoor Unit Subcooling Outlet Temperature Sensor Error
1
1
6
*
Outdoor Unit Oil Level Sensor Error
Oil Level Sensor of Outdoor Unit is open or short
Outdoor unit Main Board - External Board communication Error
1
4
5
*
Outdoor unit Main Board - External Board
communication Error
1
5
0
*
Outdoor Unit Discharge Superheat not satisfied
Outdoor Unit Compressor Discharge Superheat not satisfied
during 5 Min.
1
5
1
*
Failure of operation mode conversion at Outdoor
Unit
Failure of operation mode conversion at Outdoor Unit
1
5
3
*
Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Outdoor Unit Heat Exchanger Temperature Sensor (upper part)
Fault
1
5
4
*
Outdoor Unit Heat Exchanger Temperature
Sensor (lower part) Fault
Outdoor Unit Heat Exchanger Temperature Sensor(lower part)
open or short
1
8
2
*
Outdoor unit External Board Main-Sub Micom
communication Error
Outdoor Unit Main Board Main-Sub Micom communication
failed
1
8
7
*
Hydro - Kit P, HEX bursting error
Inlet water temperature is below 5 degree or water temperature
error during defrosting operation.
1
9
3
*
Outdoor Unit Fan Heatsink High Temperature
System is turned off by Outdoor Unit Fan Heatsink High
Temperature
1
9
4
*
Outdoor Unit Fan Heatsink Temperature Sensor
Fault
Outdoor Unit Fan Heatsink Temperature Sensor open or short
2
0
0
1
Searching pipe Error
Failure of automatic addressing of valves
2
0
1 C + #HR HR unit1 Liqiud sensor error
Liquid pipe sensor of HR unit open or short
2
0
2 C + #HR HR unit1 Sub Cooling Pipe sensor error
Sub Cooling Pipe In sensor of HR unit open or short
2
0
3 C + #HR HR unit1 Sub Cooling Pipe Out sensor error
Sub Cooling Pipe Out sensor of HR unit. open or short
2
0
4 C + #HR Communication error
Failing to receive HR unit signal at outdoor unit
2
4
2
Communication wiring defect
*
C: HR unit
#: HR unit Number
Network error of cntral controller
51
Calculate refrigerant concentration
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.
Total amount of replenishedrefrigerant
in refrigerant facility [kg(lbs)]
= Maximum concentration limit
Volume of smallest room whereindoor
[kg/m3 (lbs/ft3)]
3 3
unit is installed [m (ft )]
(R410A)
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 Concentration limit even if
the refrigerant gas leaks in the room.
Concentration limit
Concentration limit is the limit of Freon gas concentration where
immediate measures can be taken without hurting human body
when refrigerant leaks in the air. The Concentration limit shall be
described in the unit of [kg/m3 (lbs/ft3)] (Freon gas weight per unit
air volume) for facilitating calculation.
Concentration limit : 0.44 kg/m3 (0.028 lbs/ft3) (R410A)
Outdoor unit
(No.1 system)
- In case the result of calculation exceeds the Concentration limit, perform the
same calculations by shifting to the second smallest, and the third smallest
rooms until at last the result is below the Concentration limit.
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 size of opening to floor space both above
and below door, or provide opening without door.
• Countermeasure 2
Provide gas leak alarm linked with mechanical ventilator.
• Countermeasure 3
Reducing the outdoor refrigerant qty. by deviding into smaller
separate system.
Flow of
refrigerant
Gas leak alarm
Countermeasure 2
Indoor unit
Mechanical ventilator
Room where refrigerant leaks
(Refrigerant of the whole No.1
system flows out.)
Indoor unit
Checking procedure of limiting concentration
Check Concentration limit along following steps and take appropriate
measure depending on the situation.
Calculate amount of all the replenished refrigerant [kg (lbs)] per each
refrigerant system.
Amount of pre charged
refrigerant per single unit
system
+
Amount of additional = Total amount of
replenished refrigerant refrigerant in the system
[kg (lbs)]
Countermeasure 1 Opening effective to ventilation
Amount of replenished
refrigerant at factory shipment
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 by customer
Calculate minimum room capacity
Calculate room capacity by regarding a portion as one room or the
smaller room.
- Without partition
- With partition and with opening
which serve as passage of air to
adjoining room
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Opening
Partition
In the case of opening
without door , or 0.15
% or more openings
(to floor space) both
above and below door)
- With partition and without opening which serve as passage of air to
adjoining room
Outdoor unit
Indoor unit
Smallest
room
Pay a special attention to the place, such as a basement, etc.
where refrigerant can stay, since refrigerant is heavier than air.
ENGLISH
CAUTION FOR REFRIGERANT LEAK
52
ENGLISH
INSTALLATION GUIDE AT THE
SEASIDE
!
CAUTION
• Air conditioners should not be installed in areas where corrosive
gases, such as acid or alkaline gas, are produced.
• Do not install the product where it could be exposed to sea wind
(salty wind) directly. It can result corrosion on the product.
Corrosion, particularly on the condenser and evaporator fins,
could cause product malfunction or inefficient operation.
• If outdoor unit is installed close to the seaside, should avoid
direct exposure to the sea wind.
Selecting the location(Outdoor Unit)
Model Designation
Product information
• Product Name : Air conditioner
• Model Name :
Product Sales Name
Model Factory Name
ARUx***LTy5 series
= N (Heat Pump), V (Cooling Only), M (Heat Recovery / Heat Pump)
= S (Basic function),
E (Additional function related to performance)
*** = Numeric; (Cooling capacity)
x
y
• Additional information : Serial number is refer to the bar code on the
product.
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.
Airborne Noise Emission
Sea wind
The A-weighted sound pressure emitted by this product is below 70
dB.
** The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe
working levels.
Whilst there is a correlation between the emission and exposure
levels, this cannot be used reliably to determine whether or not further
precautions are required.
Sea wind
Factor that influence the actual level of exposure of the workforce
include the characteristics of the work room and the other sources of
noise, i.e. the number of equipment and other adjacent processes and
the length of time for which an operator exposed to the noise. Also,
the permissible exposure level can vary from country to country.
This information, however, will enable the user of the equipment to
make a better evaluation of the hazard and risk.
In case, to install the outdoor unit on the seaside, set up a windbreak
not to be exposed to the sea wind.
Windbreak
Sea wind
- It should be strong enough like concrete to prevent the sea wind
from the sea.
- The height and width should be more than 150 % of the outdoor unit.
- It should be kept more than 70 cm (2.3 ft) of distance between
outdoor unit and the windbreak for smooth air flow.
Select a well-drained place.
• Periodic (1 times per 6 month) cleaning of the dust or salt
particles stuck on the heat exchanger is necessary by using clean
water.
ООО «ЛГ Электроникс РУС» 143160, РФ, Московская область, Рузский район, СП
Дороховское, 86-й км. Минское шоссе, д.9.
[Manufacturer] LG Electronics Inc. Changwon 2nd factory
84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA
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