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.
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.
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.
WARNING
!
It can result in serious injury or death when the directions are ignored.
CAUTION
!
It can result in minor injury or product damage when the directions are
ignored.
WARNING
!
• Installation or repairs made by unqualified persons can result in
hazards to you and others. Installation of all field wiring and
components MUST conform with local building codes or, in the
absence of local codes, with the National Electrical Code 70 and the
National Building Construction and Safety Code or Canadian
Electrical code and National Building Code of Canada.
• 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.
• 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.
Page 3
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.
• 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
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 (44 lbs).
- 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.
Page 4
4
ENGLISH
TABLE OF CONTENTS
2TIPS FOR SAVING ENERGY
2IMPORTANT SAFETY INSTRUCTIONS
5INSTALLATION PROCESS
5OUTDOOR UNITS INFORMATION
5ALTERNATIVE REFRIGERANT R410A
5SELECT THE BEST LOCATION
7INSTALLATION SPACE
7Individual Installation
7LIFTING METHOD
8INSTALLATION
8The location of the Anchor bolts
8Foundation for Installation
8Preparation of Piping
10Plumbing materials and storage methods
11REFRIGERANT PIPING INSTALLATION
11Precautions on Pipe connection / Valve operation
11Connection of Outdoor units
12Installation procedure for HR unit
12
Installation of Outdoor Unit, HR Unit, Indoor Unit Refrigerant Pipe
12Type of HR Unit
13Installation of Zoning Control
14Caution
14Precautions on Pipe connection / Valve operation
15Connection of Outdoor units
15Caution
16PIPE CONNECTIONS BETWEEN INDOOR
AND OUTDOOR UNIT
16Preparation Work
17Pipe Drawing Out during Single / Series connection
17Refrigerant piping system
19Preparation Work
20Pipe Drawing Out during Single / Series connection
20Refrigerant piping system
21Series Outdoor Units (2 Units ~ 3 Units)
21Pipe Connection Method between outdoor unit/indoor unit
25Refrigerant charging
25Branch pipe Fitting
29Distribution Method
29Vacuum Mode
30Leak Test and Vacuum drying
31Thermal insulation of refrigerant piping
32 ELECTRICAL WIRING
32Caution
33Control box and connecting position of wiring
33Communication and Power Cables
34Wiring of main power supply and equipment capacity
34Field Wiring
38Checking the setting of outdoor units
40Switch for setup of HR Unit
44Automatic Addressing
45The Procedure of Automatic Addressing
46Flow chart of auto pipe detection Process
47Flow chart of manual addressing for pipe detection
47Example of manual valve addressing (Non-Zoning setting)
48Example of manual valve addressing (Zoning setting)
48Method of checking the pipe detection result at HR unit
48Identification of Manual Valve ID (Address)
48Method of checking the pipe detection result at outdoor unit
48Setting method of Master indoor unit in zoning
49Group Number setting
50Cool & Heat selector (Fn 1)
50High Static Pressure Compensation mode (Fn 2)
50Night Low Noise Function (Fn 3)
51Overall HEX defrost mode (Fn 4)
51Setting the ODU address (Fn 5)
51Snow removal & rapid defrost (Fn 6)
52Target pressure adjusting (Fn 8)
52Low Ambient Kit (Fn 9)
52High Efficiency Mode (Cooling Operation) (Fn 10)
52Auto Dust Removal Mode (Fn 11)
53Compressor Max. Frequency Limit (Fn 12)
53ODU Fan Max. RPM Limit (Fn 13)
53SLC (Smart Load Control) (Fn 14)
53Humidity Reference Control (Fn 16)
54Central Control Connection at Indoor Unit side (Fn 19)
54Compressor Input Current Limit Mode (Fn 20)
54Overall Defrost Operating in Low temperature (Heating) (Fn 22)
54Base pan Heater operation (Fn 23)
55Comfort Cooling operation (Id 10)
56Self-Diagnosis Function
58 CAUTION FOR REFRIGERANT LEAK
58Introduction
58Checking procedure of limiting concentration
59 INSTALLATION GUIDE AT THE SEASIDE
60Model Designation
Page 5
The foundation must be level even
Outdoor unit foundation work
Avoid short circuits and ensure
sufficient space is allowed for service
Installation of outdoor unit
Refer to automatic addressing flowchart
Automatic addressing of indoor unit
In the final check for 24 hours at 3.8 MPa (38.7 kgf/cm
2
)[551.1 psi]
there must be no drop in pressure.
Airtight test
Multiple core cable must not be used.
(suitable cable should be selected)
Electrical work
(connection circuits and drive circuits)
Make sure no gaps are left where
the insulating materials are joined
Heat insulation work
Make sure airflow is sufficient
Duct work
Adjust to downward gradient
Drain pipe work
Special attention to dryness,
cleanness and tightness
Refrigerant piping work
Check model name to
make sure the fitting
is made correctly
Installation of indoor unit
Take account of gradient
of drain piping
Sleeve and insert work
Make connection clearly between outdoor, indoor,
remote controller and option.
Preparation of contract drawings
Indicate clearly who will be responsible for switch setting.
Determination of division work
The vacuum pump used must have a capacity of reaching at least
5 torr, more than 1 hour
Vacuum drying
Recharge correctly as calculated in this manual. and record the
amount of added refrigerant
Additional charge of refrigerant
Make sure there are no gaps left between the facing materials
used on the ceiling
Fit facing panels
Run each indoor unit in turn to make sure the pipe work
has been fitted correctly
Test run adjustment
Explain the use of the system as clearly as possible to your customer and
make sure all relevant documentation is in order
Transfer to customer with explanation
Preheat the crank case with the electrical heater for more than 6 hours.
INSTALLATION PROCESS
OUTDOOR UNITS INFORMATION
CAUTION
!
Combination Ratio(50~130 %)
Outdoor NumberConnection Capacity
Single outdoor units
130 %Double outdoor units
Triple outdoor units
5
ENGLISH
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.
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.
Page 6
6
More than 100 (3-15/16)
(Servicing space)
More than 100 (3-15/16)
(Servicing space)
345 (13-19/32)
ENGLISH
• Avoid unit installation in a place where acidic solution and spray
(sulfur) are often used.
• Do not use unit under any special environment where oil, steam and
sulfuric gas exist.
• It is recommended to fence round the outdoor unit in order to
prevent any person or animal from accessing the outdoor unit.
• If installation site is area of heavy snowfall, then the following
directions should be observed.
- Make the foundation as high as possible.
- Fit a snow protection hood.
• Select installation location considering following conditions to avoid
bad condition when additionally performing defrost operation.
- Install the outdoor unit at a place well ventilated and having a lot of
sunshine in case of installing the product at a place With a high
humidity in winter (near beach, coast, lake, etc.)
(Ex : Rooftop where there is always sunshine.)
For Heat Recovery Installation
254(10)
218(8-19/32)
160
(6-5/16)
809(31-27/32)
800(31-1/2)
793(31-7/32)
7
311(12-1/4)
Inspection door
(servicing space)
165
160
(6-5/16)
300(11-13/16) more
(Servicing space)(Servicing space)
300(11-13/16) more
(Servicing space)
2
3
1
(6-1/2)
6
147(5-23/32)
92(3-5/8)
126(4-31/32)
389(15-5/16)
6(1/4) more (Serviceing space)
300(11-13/16)
6(1/4) more (Serviceing space)
254(10)
more
(Servicing space)
4
5
55(2-5/32)
176(6-15/16)
19(3/4)
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.
2 Series
450 (17-23/32)
218 (8-19/32)
174
(6-27/32)
481 (18-15/16)
450 (17-23/32)
453 (17-27/32)
7
1
345 (13-19/32)
345 (13-19/32)
2
3
Inspection door
(servicing space)
182
174
(6-27/32)
More than
300 (11-13/16)
(Servicing space)(Servicing space)
More than
300 (11-13/16)
(Servicing space)
124 (4-7/8)
128 (5-1/32)
(7-5/32)
419 (16-1/2)
61
(2-13/32)
6
More than 100 (3-15/16)
More than 100 (3-15/16)
(Servicing space)
(Servicing space)
More than
300 (11-13/16)
More than 100 (3-15/16)
More than 100 (3-15/16)
(Servicing space)
(Servicing space)
More than
450 (17-23/32)
(Servicing space)
137
(5-13/32)
54
60
(2-3/8)
30
(1-3/16)
■ Unit: mm(inch)
Description
PRHR042A
No.Part Name
PRHR032A
PRHR083A
PRHR063A
PRHR022A
PRHR023A
PRHR043A
PRHR033A
Low pressure Gas
1
pipe connection port
High pressure Gas
2
pipe connection port
Ø 28.58 (1-1/8)
Brazing connection
Ø 22.2 (7/8) Brazing
connection
Ø 22.2 (7/8) Brazing
connection
Ø 19.05 (3/4) Brazing
connection
Ø 15.88 (5/8) Brazing
connection
Liquid pipe
3
connection port
(PRHR042A)
Ø 12.7 (1/2) Brazing
Ø 9.52 (3/8) Brazing
connection
connection
(PRHR032A)
Indoor unit Gas pipe
4
connection port
Indoor unit Liquid
5
pipe connection port
Ø 15.88 (5/8) Brazing
connection
Ø 9.52 (3/8) Brazing
connection
Ø 15.88 (5/8) Brazing
connection
Ø 9.52 (3/8) Brazing
connection
6 Control box--
7 Hanger metalM10 or M8M10 or M8
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.
3 Series
500(19-11/16)
254(10)
500(19-11/16)
150(5-29/32)486(19-1/8)150(5-29/32)
218(8-19/32)
7
Inspection door
(servicing space)
311(12-1/4)
2
3
1
165(6-1/2)
6(1/4) more (Serviceing space)
300(11-13/16)
(Servicing space)(Servicing space)
126(4-31/32)
147(5-23/32)
92
(3-5/8)
389(15-5/16)
300(11-13/16) more
(Servicing space)
6
300(11-13/16)
6(1/4) more (Serviceing space)
254(10)
(Servicing space)
176(6-15/16)
more
54
55(2-5/32)
19(3/4)
Page 7
h2
h1
1 500 (59)
Inlet
side
A
B
50500
(19-11/16’’)(19-11/16’’)
500
(19-11/16’’)
Fron t
side
500
(19-11/16’’)
240
(9-1/2’’)
or more
50 (2) or more
45° or
more
7
ac
b
d
aee c
b
d
aec
b
f
d
aec
b
f
d
ac
b
f
d
aec
b
f
d
aeec
b
f
d
a
b
aee
b
INSTALLATION SPACE
Individual Installation
During the installation of the unit, consider service, inlet, and outlet
acquire the minimum space as shown in the figures below.
Category
4 sides
are
walls
Installation Space
Front
Front
FrontFront
FrontFront
Front
Front
Case 1
(10 mm(13/32 inch) ≤ Side
Space ≤ 49 mm(13/14 inch))
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
C ≥ 10 (13/32)
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 ≥ 10 (13/32)
B ≥ 500 (19-11/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
E ≥ 20 (25/32)
F ≥ 900 (35-7/16)
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)
Case 2
(Side Space
≥ 49 mm(13/14 inch))
A ≥ 50 (1-31/32)
B ≥ 100 (3-15/16)
C ≥ 50 (1-31/32)
D ≥ 500(19-11/16)
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 ≥ 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 ≥ 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)
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.
- The height of H frame must be more than 2 times the snowfall
and its width shall not exceed the width of the product. (If width
of the frame is wider than that of the product, snow may
accumulate)
- Don't install the suction hole and discharge hole of the Outdoor
Unit facing the seasonal wind.
LIFTING METHOD
• 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.
ENGLISH
Front
Front
FrontFront
Rear
to
Rear
FrontFront
FrontFrontFront
Only 2
sides
are
Front
Front
FrontFront
No limit for the
height of wall
No limit for the height of wall
walls
Front
Limitati
ons on
the
height
of the
wall
(Refer
to 4
side
walls)
A ≥ 10 (13/32)
B ≥ 500 (19-11/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
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 ≥ 1 200 (47-1/4)
A ≥ 10 (13/32)
B ≥ 500 (19-11/16)
C ≥ 10 (13/32)
D ≥ 500 (19-11/16)
E ≥ 20 (25/32)
F ≥ 1 800 (70-7/8)
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 ≥ 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 ≥ 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 ≥ 1 200 (47-1/4)
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
A ≥ 10 (13/32)
B ≥ 300 (11-13/16)
E ≥ 20 (25/32)
• 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 Inlet side.
• If the height of the walls on the front and Inlet
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
CAUTION
!
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.
Page 8
8
At least
200(7-7/8)
Unit : mm (inch)
200(7-7/8)
75(2-15/16)
75(2-15/16)
200(7-7/8)
100(3-15/16)
Pipe
Reamer
Point down
Copper
tube
90°
Slanted Uneven Rough
Pallet(Wood Support)
- Remove before Installation
ENGLISH
INSTALLATION
• 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).
Outdoor units
should not be
supported only by
the corner supports.
The location of the Anchor bolts
65
(2-9/16)
65
(2-9/16)
At least 100 mm
(3-15/16 inch)
At least 100 mm
(3-15/16 inch)
At least 100 mm
(3-15/16 inch)
At least 100 mm
(3-15/16 inch)
At least
65 (2-9/16)
At least
65 (2-9/16)
Unit : mm (inch)
731 (28-25/32)
At least 100 mm
(3-15/16 inch)
Center of the Unit
At least 100 mm
(3-15/16 inch)
Center of the Unit
760 (29-29/32)
Ⓐ The corner part must be fixed firmly. Otherwise, the support for the
installation may be bent.
Ⓑ Get and use M10 Anchor bolt.
Ⓒ Put Cushion Pad between the outdoor unit and ground support for
the vibration protection in wide area.
Ⓓ Space for pipes and wiring (Pipes and wirings for bottom side)
Ⓔ H-beam support
Ⓕ Concrete support
WARNING
!
• Install where it can sufficiently support the weight of the
outdoor unit.
If the support strength is not enough, the outdoor unit may drop
and hurt people.
• Install where the outdoor unit may not fall in strong wind or
earthquake.
If there is a fault in the supporting conditions, the outdoor unit
may fall and hurt people.
• Please take extra cautions on the supporting strength of the
ground, water outlet treatment(treatment of the water flowing
out of the outdoor unit in operation), and the passages of the
pipe and wiring, when making the ground support.
• Do not use tube or pipe for water outlet in the Base panel. Use
drainage instead for water outlet. The tube or pipe may freeze
and the water may not be drained.
CAUTION
!
• Be sure to remove the Pallet(Wood Support) of the bottom side
of the outdoor unit Base 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.
Foundation for 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)).
Main cause of gas leakage is defect in flaring work. Carry out correct
flaring work in the following procedure.
Cut the pipes and the cable
- Use the accessory piping kit or the pipes purchased locally.
- Measure the distance between the indoor and the outdoor unit.
- Cut the pipes a little longer than measured distance.
- Cut the cable 1.5 m (4.92 ft) longer than the pipe length.
Page 9
9
Inclined
Inside is shining without scratches.
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Union
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.
Bar
Flaring work
- Carry out flaring work using flaring tool as shown below.
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.
Flare shape and flare nut tightening torque
Precautions when connecting pipes
- See the following table for flare part machining dimensions.
- When connecting the flare nuts, apply refrigerant oil to the inside and
outside of the flares and turn them three or four times at first. (Use
ester oil or ether oil.)
See the following table for tightening torque.(Applying too much torque may
cause the flares to crack.)
- After all the piping has been connected, use nitrogen to perform a
gas leak check.
Pipe size
[mm (inch)]
Ø 9.52 (3/8)38±4 (28±3.0)12.8 (0.5)~13.2 (0.52)
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)
!
• Always use a charge hose for service port connection.
•
• When loosening a flare nut, always use two wrenches in
After tightening the cap, check that no refrigerant leaks are present
combination, When connecting the piping,
always use a spanner and torque wrench
in combination to tighten the flare nut.
flare(inner and outer faces) with oil for
R410A(PVE) and hand tighten the nut
3 to 4 turns as the initial tightening.
.
Opening shutoff valve
1 Remove the cap and turn the valve counter clockwise with the
hexagon wrench.
2 Turn it until the shaft stops.
Do not apply excessive force to the shutoff valve. Doing so may
break the valve body, as the valve is not a backseat type. Always
use the special tool.
3 Make sure to tighten the cap securely.
Closing shutoff valve
1 Remove the cap and turn the valve clockwise with the hexagon
wrench.
2 Securely tighten the valve until the shaft contacts the main body seal.
3 Make sure to tighten the cap securely.
* For the tightening torque, refer to the table on the below.
Tightening torque
Shut
off
valve
size
(mm
(inch))
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)
Tightening torque N.m (lbs.ft) (Turn clockwise to close)
Shaft
(valve body)
ClosedOpened
6.0±0.6
(4.4±0.4)
10.0±1.0
(7.4±0.7)
12.0±1.2
(8.9±0.9)
14.0±1.4
(10.3±1.0)
30.0±3.0
(22.1±2.2)
5.0±0.0
(3.7±0.4)
Hexagonal
wrench
4 mm
(0.16 inch)
5 mm
(0.24 inch)
8 mm
(0.31 inch)
Cap
(Valve lid)
17.6±2.0
(13.0±1.5)
20.0±2.0
(14.8±1.5)
25.0±2.5
(18.4±1.8)
Service
port
12.7±2
(9.4±1.5)
Flare nut
16±2
(12±1.5)
38±4
(28±3.0)
55±6
(41±4.4)
75±7
(55±5.1)
110±10
(81.1±7.4)
-
Gas line
piping
attached
to unit
-
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]).
2 Precautions in high humidity circumstance:
This air conditioner has been tested according to the "ISO
Conditions with Mist" and confirmed that there is not any default.
However, if it is operated for a long time in high humid atmosphere
(dew point temperature: More than 23 °C [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.
- Add the insulation over 10 mm [0.39 inch] thickness at high
humidity environment.
Fastening band
(accessory)
Refrigerant piping
Indoor unit
Thermal insulator
(accessory)
ENGLISH
Page 10
10
Moisture
Dust
Leakage
Regulator
Nitrogen gas
Pressure 0.02 MPa
(2.9 psi) less
Auxiliary valve
Taping
(Should not
contain air)
Welding Point
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.
Oxide scale
Nitrogen
ENGLISH
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
Drying CleanlinessAirtight
Should be no
moisture inside
Items
- Significant
hydrolysis of
refrigerant oil
- Degradation of
refrigerant oil
- Poor insula’tion of
the compressor
- Do not cold and
Cause failure
warm
- Clogging of EEV,
Capillary
- No moisture in the
pipe
- Until the
connection is
completed, the
plumbing pipe
entrance should be
strictly controlled.
- Stop plumbing at
rainy day.
- Pipe entrance
should be taken
side or bottom.
- When removal burr
Countermeasure
after cutting pipe,
pipe entrance
should be taken
down.
- Pipe entrance
should be fitted
cap when pass
through the walls.
No dust inside.
- Degradation of
refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- 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.
There is no refrigerant
- Gas shortages
- Degradation of
refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- Airtightness test
should be.
- Brazing operations
to comply with
standards.
- Flare to comply
with standards.
- Flange connections
to comply with
standards.
leakage
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.
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)
Page 11
11
Y branch
A
B
To outdoor unit
To branch piping or indoor unit
A
B
Viewed from point A
in direction of arrow
Within +/- 10°
Facing
upwards
Facing
downwards
I.D 22.2
(7/8)
O.D 28.58
(1-1/8)
416(16-3/8)
I.D 28.58(1-1/8)
I.D 31.8(1-1/4)
I.D 41.3
(1-5/8)
130(5-1/8)
I.D 22.2
(7/8)
O.D 28.58
(1-1/8)
I.D 34.9
(1-3/8)
I.D 28.58(1-1/8)
I.D 28.58
(1-1/8)
111
(4-3/8)
I.D 38.1
(1-1/2)
O.D 34.9
(1-3/8)
I.D 34.9(1-3/8)
I.D 22.2(7/8)
408(16-1/16)
I.D 34.9
(1-3/8)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 12.7
(1/2)
I.D 9.52
(3/8)
83
(3-9/32)
I.D 22.2
(7/8)
70(2-3/4)
O.D 19.05
(3/4)
I.D 12.7(1/2) I.D 15.88(5/8)
O.D 12.7(1/2) I.D 9.52(3/8)
O.D 15.88(5/8) I.D 19.05(3/4)
I.D 15.88(5/8)
O.D 15.88(5/8)
331(13-1/32)
314(12-3/8)
I.D 15.88(5/8)O.D 22.2
(7/8)
I.D 19.05
(3/4)
I.D 28.58(1-1/8)
I.D 31.8
(1-1/4)
O.D 28.58
(1-1/8)
1.D 22.2(7/8)
I.D 19.05(3/4)
I.D 28.58(1-1/8)
111
(4-3/8)
I.D 34.9
(1-3/8)
I.D 28.58
(1-1/8)
I.D 22.2(7/8)
416(16-3/8)
408(16-1/16)
O.D 34.9
(1-3/8)
I.D 28.58
(1-1/8)
I.D 41.3
(1-5/8)
O.D 34.9
(1-3/8)
I.D 41.3(1-5/8)
I.D 53.98
(2-1/8)
I.D 44.5
(1-3/4)
O.D 41.3
(1-5/8)
I.D 22.2
(7/8)
I.D 34.9(1-3/8)O.D 28.58
(1-1/8)
I.D 28.58(1-1/8)
I.D 34.9
(1-3/8)
341(13-7/16)
125
(4-29/32)
111
(4-3/8)
298(11-23/32)
O.D 19.05(3/4)
I.D 22.2(7/8)
O.D 19.05
(3/4)
I.D 22.2
(7/8)
I.D 28.58
(1-1/8)
I.D 15.88
(5/8)
I.D 19.05
(3/4)
83
(3-9/32)
I.D 12.7(1/2)
O.D 15.88(5/8) I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 12.7(1/2)
O.D 19.05
(3/4)
I.D 22.2(7/8)
I.D 15.88(5/8)
334(13.5/32)
281(11-1/16)
I.D 22.2
(7/8)
I.D 28.58(1-1/8)
I.D 31.8(1-1/4)
I.D 41.3
(1-5/8)
I.D 53.98
(2-1/8)
I.D 44.5
(1-3/4)
O.D 41.3
(1-5/8)
130(5-1/8)
I.D 38.1
(1-1/2)
O.D 34.9
(1-3/8)
I.D 34.9(1-3/8)
I.D 28.58(1-1/8)
111
(4-3/8)
I.D 34.9
(1-3/8)
O.D 28.58
(1-1/8)
I.D 22.2
(7/8)
I.D 28.58
(1-1/8)
I.D 22.2(7/8)
O.D 28.58
(1-1/8)
416(16-3/8)
408(16-1/16)
I.D 34.9
(1-3/8)
REFRIGERANT PIPING INSTALLATION
For Heat Recovery System Installation
Precautions on Pipe connection / Valve operation
Pipe connection is done by connecting from the end of the pipe to the
branching pipes, and the refrigerant pipe coming out of the outdoor
unit is divided at the end to connect to each indoor unit. Flare
connection for the indoor unit, and welding connection for the outdoor
pipe and the branching parts. (Including HR Unit)
- Use hexagonal wrench to open/close the valve.
Service Port
Liquid pipe
Low Pressure Gas pipe
High Pressure Gas pipe
2, 3 Outdoor Units
Outdoor UnitsModelPipe
2 Unit
Ⓐ
ARCNB21
ENGLISH
Unit : mm(inch)
Low Pressure Gas Pipe
Liquid Pipe
High Pressure Gas Pipe
Low Pressure Gas Pipe
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.)
Connection of Outdoor units
When installing ODU series, refer below picture.
AB
(Master)
(Slave1)
C
(Slave2)
Liquid Pipe
3 Unit
Ⓑ
ARCNB31
High Pressure Gas Pipe
For more information, refer accessory installation manual.
A ≥ B ≥ C
① IDU side connection pipe
② ODU to ODU connection pipe (1st branch)
③ ODU to ODU connection pipe (2nd branch)
CAUTION
!
Y-branches between the outside units must be installed horizontally.
Page 12
12
Gas pipe
Gas pipe
Liquid pipe
Liquid pipe
HR Unit
High
Pressure
Gas Pipe
Liquid pipe
Low Pressure
Gas Pipe
1
2
3
4
Pipe
connection
from left
side
Pipe
connection
from right
side
Parallel
pipe
connection
Gas pipe Ø 15.88 (5/8)
Liquid pipe Ø 9.52 (3/8)
Brazing Type
1
2
3
4
Remove caps on
The brazing part.
Liquid pipe
Low pressure gas pipe
High pressure gas pipe
Hanger metal
Flat washer
Hanging bolt
ENGLISH
Installation procedure for HR unit
1 Using an insert-hole-in- anchor, hang the hanging bolt.
2 Install a hexagon nut and a flat washer (locally-procured)to the
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)
Hanger metal
Hanger metal
Flat washer
Flat washer
(M10)
Hanging bolt
Hanging bolt
(M10 or M8)
Insulation
Installation of Outdoor Unit, HR Unit, Indoor Unit
Refrigerant Pipe
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.
A
Type of HR Unit
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.
2 Series
PRHR022A
(2 branches)
3 Series
PRHR023A
(2 branches)
PRHR063A
(6 branches)
PRHR032A
(3 branches)
PRHR033A
(3 branches)
PRHR083A
(8 branches)
PRHR042A
(4 branches)
PRHR043A
(4 branches)
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).
WARNING
!
Before brazing work, remove gas in the HR Unit by cutting the
three pipes in the small circles on the figure.
If not, it may cause injuries.
Remove the caps before connecting pipes.
Joint Method of HR Unit
(Big Duct : ARNU763B8-, ARNU963B8-)
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.
• A connection to un-neighboring pipes is forbidden.
Do not link more than 2 outlets.
nd
HR Unit
4 3 2 1
B8
(48k)BH(72k)
Installation of Zoning Control
Some indoor unit can be connected to one port of HR unit.
HR unitHR unit
Zoning control group 1Zoning control group 2
(Max. 8 Indoor Units)
Changeover under controlAuto changeoverChangeover 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
PRHR042A HR unit is 56.4 kW (192 kBtu/h).
• The maximum number of indoor units connected to a PRHR042A
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.
sealing
(Max. 8 Indoor Units)
ENGLISH
• The B8 unit, which has the largest capacity, must be connected
to the 1st and 2nd outlets of the 1st HR unit. Other B8 units can
be connected to any two neighboring outlets within one HR unit.
HR unit
Low pressure
gas pipe
High pressure
gas pipe
PRHR022A
PRHR023A
Ø 22.2 (7/8)Ø 28.58 (1-1/8) Ø 28.58 (1-1/8)
Ø 19.05 (3/4)Ø 22.2 (7/8)Ø 22.2 (7/8)
Liquid pipeØ 9.52 (3/8)Ø 12.7 (1/2)Ø 15.88 (5/8)
PRHR032A
PRHR033A
[Reducers for indoor unit and HR unit]
Unit : mm (inch)
PRHR042A
PRHR043A
PRHR063A
PRHR083A
Page 14
14
To Outdoor Unit
Sealed Piping
A
A
B
A
B
ENGLISH
Caution
1 Use the following materials for refrigerant piping.
- Wall thickness : Comply with the relevant local and national
Outer diameter
[mm(inch)]
Minimum
thickness
[mm(inch)]
6.35
(1/4)
0.8
(0.03)
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.
Y branch
ARBLB01621, ARBLB03321,
ARBLB07121, ARBLB14521,
ARBLB23220
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 .)
regulations for the designed pressure 3.8 MPa
(551 psi). We recommend the following table as
the minimum wall thickness.
9.52
12.7
15.88
19.05
22.2
25.4
28.58
31.8
(3/8)
0.8
(0.03)
(1/2)
0.8
(0.03)
(5/8)
0.99
(0.04)
(3/4)
(7/8)
(1)
(1-1/8)
0.99
0.99
0.99
(0.04)
(0.04)
4 branches 7 branches 10 branches
0.99
(0.04)
(0.04)
ARBL054ARBL057ARBL1010
ARBL104ARBL107ARBL2010
(1-1/4)
1.1
(0.04)
Header
34.9
(1-3/8)
1.21
(0.05)
(1-1/2)
38.1
1.35
(0.05)
41.3
(1-5/8)
1.43
(0.06)
44.45
(1-3/4)
1.55
(0.06)
53.98
(2-1/8)
2.1
(0.08)
12 Always insulate the piping properly. Insufficient insulation will
result in a decline in heating/cooling performance, drip of
condensate and other such problems.
13 When connecting the refrigerant piping, make sure the service
valves of the Outdoor Unit is completely closed (the factory
setting) and do not operate it until the refrigerant piping for the
Outdoor and Indoor Units has been connected, a refrigerant
leakage test has been performed and the evacuation process has
been completed.
14 Always use a non-oxidizing brazing material for brazing the parts
and do not use flux. If not, oxidized film can cause clogging or
damage to the compressor unit and flux can harm the copper
piping or refrigerant oil.
WARNING
!
When installing and moving the air conditioner to another site, be
sure to make recharge refrigerant after perfect evacuation.
• If a different refrigerant or air is mixed with the original
refrigerant, the refrigerant cycle may malfunction and the unit
may be damaged.
• After selecting diameter of the refrigerant pipe to suit total
capacity of the indoor unit connected after branching, use an
appropriate branch pipe set according to the pipe diameter of the
indoor unit and the installation pipe drawing.
For Heat Pump System Installation
Precautions on Pipe connection / Valve operation
Pipe connection is done by connecting from the end of the pipe to the
branching pipes, and the refrigerant pipe coming out of the outdoor
unit is divided at the end to connect to each indoor unit. Flare
connection for the indoor unit, and welding connection for the outdoor
pipe and the branching parts.
- 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
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.
Liquid pipe
Not used(keep closed)
Gas pipe
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.
Page 15
15
O.D 15.88(5/8)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 22.2(7/8)
O.D 15.88(5/8) I.D 19.05(3/4)
I.D 12.7(1/2) I.D 15.88(5/8)
O.D 12.7(1/2) I.D 9.52(3/8)
I.D 12.7
(1/2)
I.D 9.52
(3/8)
83
(3-9/32)
O.D 19.05(3/4)
70(2-3/4)
I.D 15.88(5/8)
331(13-1/32)
314(12-3/8)
I.D 19.05(3/4)
I.D 22.2
(7/8)
I.D 28.58(1-1/8)
I.D 31.8(1-1/4)
I.D 28.58
(1-1/8)
I.D 34.9(1-3/8)
I.D 41.3
(1-5/8)
130(5-1/8)
I.D 38.1
(1-1/2)
I.D 22.2
(7/8)
O.D 28.58
(1-1/8)
I.D 34.9(1-3/8)
111
(4-3/8)
O.D 34.9(1-3/8)
I.D 28.58(1-1/8)
I.D 22.2(7/8)
O.D 28.58
(1-1/8)
416(16-3/8)
408(16-1/16)
I.D 34.9
(1-3/8)
O.D 19.05(3/4)
I.D 15.88(5/8)
I.D 22.2
(7/8)
O.D 19.05(3/4)
I.D 22.2(7/8)
I.D 15.88(5/8) I.D 12.7(1/2)
I.D 28.58(1-1/8)
O.D 15.88(5/8) I.D 19.05(3/4)
I.D 19.05
(3/4)
I.D 19.05
(3/4)
334(13-5/32)
281(11-1/16)
I.D 12.7(1/2)
O.D 19.05(3/4) I.D 22.2(7/8)
83
(3-9/32)
O.D 34.9(1-3/8) I.D 28.58(1-1/8)
I.D 41.3(1-5/8) O.D 34.9(1-3/8)
I.D 41.3(1-5/8)
I.D 53.98(2-1/8)O.D 41.3(1-5/8)
I.D 22.2(7/8)
O.D 28.58(1-1/8)
I.D 34.9(1-3/8)
I.D 28.58(1-1/8)
I.D 34.9
(1-3/8)
111
(4-3/8)
I.D 44.5(1-3/4)
341(13-7/16)
125(4-29/32)
298(11-23/32)
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.)
Connection of Outdoor units
When installing ODU series, refer below picture.
AB
(Master)
(Slave1)
A ≥ B ≥ C
① IDU side connection pipe
② ODU to ODU connection pipe (1st branch)
③ ODU to ODU connection pipe (2nd branch)
C
(Slave2)
For more information, refer accessory installation manual.
Y branch
A
To outdoor unit
A
To branch piping or indoor unit
B
Facing
downwards
CAUTION
!
Facing
upwards
B
Viewed from point A
in direction of arrow
Y-branches between the outside units must be installed
horizontally.
ENGLISH
Within +/- 10
2, 3 Outdoor Units
Outdoor UnitsModelPipe
2 Unit
3 Unit
Ⓐ
ARCNN21
Ⓑ
ARCNN31
Liquid Pipe
Gas Pipe
Liquid Pipe
Gas Pipe
Caution
1 Use the following materials for refrigerant piping.
- Wall thickness : Comply with the relevant local and national
Outer diameter
[mm(inch)]
Minimum
thickness
[mm(inch)]
6.35
(1/4)
0.8
(0.03)
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.
Y branch
ARBLN01621, ARBLN03321,
ARBLN07121, ARBLN14521,
ARBLN23220
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 .)
regulations for the designed pressure 3.8 MPa
(551 psi). We recommend the following table as
the minimum wall thickness.
9.52
12.7
15.88
19.05
22.2
25.4
28.58
31.8
34.9
1.1
(1-3/8)
1.21
(0.05)
38.1
(1-1/2)
1.35
(0.05)
(3/8)
0.8
(0.03)
(1/2)
0.8
(0.03)
(5/8)
0.99
(0.04)
(3/4)
0.99
(0.04)
(7/8)
0.99
(0.04)
(1)
0.99
(0.04)
(1-1/8)
0.99
(0.04)
(1-1/4)
(0.04)
Header
4 branches 7 branches 10 branches
ARBL054ARBL057ARBL1010
ARBL104ARBL107ARBL2010
41.3
(1-5/8)
1.43
(0.06)
44.45
(1-3/4)
1.55
(0.06)
53.98
(2-1/8)
(0.08)
2.1
Page 16
16
To Outdoor Unit
Sealed Piping
A
A
B
A
B
Nitrogen
Direction
Knock Out for
Liquid pipe
Knock Out for low
pressure gas pipe
Knock Out for high
pressure gas pipe
Knock Out for
communication cable
Removal area for pipes
bottom side connections.
Knock Out for
power supply cable
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/cm
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.
2
(2.8 psi) Nitrogen flow in the pipe when
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.
Regulator
Valve
Nitrogen
Left Side
Pipe Draw
Out
Right
Side Pipe
Draw Out
Front Pipe Draw Out
Refrigerant Pipe
Nitrogen
Nitrogen
Direction
Direction
Taping
For Heat Recovery System Installation
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
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.
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.
Page 17
17
High Pressure Gas pipe
Liquid pipe
Low Pressure Gas pipe
131(5-5/32)
69(2-23/32)
126(4-31/32)
High Pressure
Gas pipe
Liquid pipe
Low Pressure Gas pipe
Service Port
Liquid pipe
Low Pressure
Gas pipe
High Pressure
Gas pipe
Leakage
Prevention Cap
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
Pipe Drawing Out during Single / Series connection
Method of drawing out pipes on the front side
- Proceed with the pipe work as shown in the below figure for front
side pipe drawing out.
Refrigerant piping system
3 Outdoor Units
Example : 12 Indoor Units connected
Ⓐ : Outdoor Unit
Ⓑ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe between Outdoor units : ARCNB31
Ⓕ : Connection branch pipe between Outdoor units : ARCNB21
Ⓖ : Header
Ⓗ : HR Unit
Slave 2
A3
Slave 1
A2
Master
A1
ODU Capacity
Master ≥ Slave1 ≥ Slave 2
E
F
E
A
1
D
a
D
2
b
H1
H
h
c
D
3
d
D
4
5
B1
B
C1
B2
"a"
C3
C2
H2
f
e
D
6
D
H3
g
D
7
8
"b"
i
D
H4
j
G
x
l
D
9
n
m
D
10
D
11
k
sealing
12
ENGLISH
*
D
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipeLow Pressure Gas pipe
h In case of heat pump installation, please weld with the proper Low
Remove Knock Out for the bottom side of Liquid / Gas pipe
pressure Gas pipe included with product.
High Pressure Gas pipe
- Case 1 ("a")
: Maximum height is 30 m (98.4 ft) if you install with Y branch.
- Case 2 ("b")
: Maximum height is 5 m(16 ft) in serial connection of HR units.
Refrigerant pipe diameter from branch to branch (B,C,D)
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
Page 18
18
Pattern 1
HR1
48 k48 k
12
HR2
48 k48 k
34
B
• Impossible installation : Head branch pipe HR unit
Pattern 2
HR1
1
234567
7 k 7 k7 k 7 k 7 k24 k 24 k
• Impossible installation : HR unit Head branch
pipe Y and Head branch pipe.
B
A
ENGLISH
Refrigerant pipe diameter from branch to branch (B,C)
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
L
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)
"a", "b"
- * : Assume equivalent pipe length of Y branch to be 0.5 m (1.64 ft),
that of header to be 1m (3.3 ft), calculation purpose
- It is recommended that indoor unit is installed at lower position than
the header.
- ** : To apply conditional application.
Difference in height(HR unit ↔ HR unit)
a ≤ 15 m (49 ft), b ≤ 5 m (16 ft)
Refrigerant pipe diameter from outdoor unit to first
branch. (A)
Pipe diameter when pipe length is ≥
90 m (295 ft) or when height differential
(ODU↔IDU) is > 50 m (164 ft)
High
(5/8)
(3/4)
(3/4)
(7/8)
(7/8)
Liquid Pipe
mm (inch)
Ø 12.7
(1/2)
Ø 12.7
(1/2)
Ø 15.88
(5/8)
Ø 15.88
(5/8)
Ø 19.05
(3/4)
Ø 19.05
(3/4)
Ø 19.05
(3/4)
Ø 22.2
(7/8)
Ø 22.2
(7/8)
Low
Pressure
Vapor Pipe
[mm(inch)]
Not
increased
Not
increased
Not
increased
Not
increased
Not
increased
Not
increased
Not
increased
Not
increased
Not
increased
Vapor Pipe
[mm(inch)]
Pressure
increased
increased
increased
increased
increased
increased
increased
increased
increased
ODU
Capacity
(HP(ton))
8(6)
10(8)
12(10)
14(12)
18(14)
20~22
(16~18)
24(20)
26~34
(22~28)
36~50
(30~42)
Standard Pipe Diameter
Low
Liquid Pipe
mm (inch)
Pressure
Vapor Pipe
[mm(inch)]
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 15.88
(5/8)
Ø 19.05
(3/4)
Ø 19.05
(3/4)
Ø 19.05
(3/4)
Ø 22.2
(7/8)
Ø 28.58
(1-1/8)
Ø 28.58
(1-1/8)
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)
Pressure
Vapor Pipe
[mm(inch)]
Ø 15.88
Ø 19.05
Ø 19.05
Ø 22.2
Ø 22.2
Ø 28.58
(1-1/8)
Ø 28.58
(1-1/8)
Ø 28.58
(1-1/8)
Ø 28.58
(1-1/8)
* If available on site, select pipe size according to upper table.
Otherwise it doesn’t need to be increased.
Y branch, Header and HR unit connection pattern
High
Not
Not
Not
Not
Not
Not
Not
Not
Not
(**) 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, it use this size. Otherwise it can’t be increased.
2
While calculating total refrigerant piping length, pipe B, C3 length should
be calculated twice.
A+Bx2+C3x2+C1+C2+a+b+c+d+e+f+g+i+j+k+l+m+n ≤ 1 000 m (3
281 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)
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.
Page 19
19
Pattern 3
HR1
48 k 48 k 48 k 48 k
1234
• The maximum total capacity of indoor
units is 56.4 kW(192 kBtu/h).
Pattern 4
12 k 12 k 12 k 12 k
1234
• The maximum total capacity of a branch
pipe of HR unit is 14.1 kW(48 kBtu/h).
HR1
B
Pattern 5
HR1
48 k48 k
A
12
HR2
48 k48 k
34
HR1
24 k24 k24 k
12 k12 k
B
Pattern 6
A
A
A
12 345
Pattern 8
A
A
• * : Maximum indoor units per a branch are 8 indoor units
HR1
48 k48 k
12
HR2
*
B
12 k12 k12 k12 k
3456
24 k724 k
8
Pattern 7
HR1
A
48 k48 k
12
• * : Serial connection of HR units : Capacity sum of indoor units ≤ 56.4 kW (192 kBtu/h)
HR2
48 k48 k
34
HR3
48 k48 k
56
*
5 m(16 ft)
15 m(49 ft)
1) under 40 m (131 ft)
Keep the sum of indoor capacity under 56.4 kW(192 kBtu/h).
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
1) under 40 m (131 ft)
Y branch
Keep the sum of indoor capacity under 56.4 kW(192 kBtu/h).
Knock Out for
Liquid pipe
Knock Out for low
pressure gas pipe
Knock Out for high
pressure gas pipe
Knock Out for
communication cable
Removal area for pipes
bottom side connections.
Knock Out for
power supply cable
ENGLISH
Indoor UnitY Branch pipe
1
Outdoor
Unit
• Pipe installation from outdoor units to HR units
: 3 pipes(Low pressure Gas pipe, High pressure Gas pipe, Liquid pipe)
• Pipe installation from HR units to indoor units
: 2 pipes(Gas pipe, Liquid pipe)
Low pressure Gas pipe
High pressure Gas pipe
Liquid pipe
A
Gas pipe
HR1
Liquid pipe
Head Branch pipe
B
Indoor
Unit
Keep the 40 m (131 ft) distance from the first branch to the farthest
indoor.
For Heat Pump System Installation
Preparation Work
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
Page 20
20
Service Port
Liquid pipe
Gas pipe
Leakage
Prevention Cap
Not used
(keep closed)
Liquid pipe
Gas pipe
High Pressure
Gas pipe
Liquid pipe
131(5-5/32)
126(4-31/32)
ENGLISH
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.
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
Refrigerant piping system
1 Outdoor Units
Y branch method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
H 110 m [361 ft]
h * : See Table 4
Combination of Y
branch/header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
H 110 m [361 ft]
h * : See Table 4
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90 m [295 ft])
h 40 m [131 ft]
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90 m [295 ft])
Indoor
Unit
h 40 m(131 ft)
Pipe Drawing Out during Single / Series connection
Method of drawing out pipes on the front side
- Proceed with the pipe work as shown in the below figure for front
side pipe drawing out.
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
Remove Knock Out for the pipes
Not used(keep closed)
High Pressure Gas pipe
Header Method
Ⓐ : Outdoor Unit
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Ⓔ : Header
H 110 m [361 ft]
h 40 m [131 ft]
Piping length from outdoor branch to outdoor unit ≤ 10 m(33 ft),
equivalent length : max 13 m(43 ft) (for 14 Ton or more)
Additional Application
To satisfy below condition to make 40 m(131 ft) ~ 90 m(295 ft) of
pipe length after first branch.
• Diameter of pipes between first branch and the last branch
should be increased by one step, except pipe diameter B, C, D
is same as Diameter A
Ø 1/4(6.35 mm) ’ Ø 3/8(9.52 mm) ’ Ø 1/2(12.7 mm) ’
Ø 5/8(15.88 mm) ’ Ø 3/4(19.05 mm) ’ Ø 7/8(22.2 mm) ’
Ø 1(25.4)*, Ø 1-1/8(28.58 mm) ’ Ø 1-1/4(31.8 mm)*,
Ø 1-3/8(34.9 mm) ’ Ø 1-1/2(38.1 mm)* ’ Ø 1-5/8(41.3 mm)
* : It is not necessary to size up.
h If the step up size is not available, you can not select the next
higher size available.
•
While calculating whole refrigerant pipe length, pipe B, C, D length
should be calculated twice.
A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1 000 m(3 281 ft)
• Length of pipe from each indoor unit to the closest branch
(a,b,c,d,e) ≤ 40 m(131 ft)
• [Length of pipe from outdoor unit to the farthest indoor unit 5
(A+B+C+D+e)]
- [Length of pipe from outdoor unit to the closest indoor unit 1
(A+a)] ≤ 40 m(131 ft)
L 200 m [656 ft]
l 40 m [131 ft]
D
h In case of heat pump system installation, please weld with the
proper accessory pipe included with product.
Page 21
21
F
E
Series Outdoor Units (2 Units ~ 3 Units)
Y branch method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓔ : Connection branch
pipe between Outdoor
units: ARCNN31
Ⓕ : Connection branch
pipe between Outdoor
units: ARCNN21
Combination of Y branch/
header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe
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)
Less than 10 m [32.8 ft]
(equivalent length of piping 13 m
(Table 1) Limit Pipe length
Y branch
Method
Longest
pipe length(L)
A+B+C+D+e ≤
150 m [492 ft]
(200 m [656 ft] :
Conditional
application)*
175 m [574 ft]
(225 m [738 ft] :
Conditional
length
Outdoor Unit
↔
Indoor Unit
Equivalent
pipe length
Max pipe
40 m(131 ft)
application)*
Outdoor Unit
Max
difference
↔ Indoor Unit
in height
↔ Indoor Unit
Longest
pipe length
after
1st branch
h * : See Table 4
WARNING
!
Indoor Unit
Total pipe
length
Difference
in height(H)
Difference
in height(h)
Pipe length(l)
1 000 m
[3 281 ft]
110 m [361 ft]110 m [361 ft]
40 m [131 ft]40 m [131 ft]
40 m [131 ft]
(90 m [295 ft] :
Conditional
application)*
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
5 m [16.4 ft]
[42.7 ft])
Combination of Y
branch/header
Method
A+B+b ≤ 150 m
[492 ft]
A+C+e ≤ 150 m
[492 ft]
A+f ≤ 200 m
(200 m [656 ft] :
Conditional
application)*
175 m [574 ft]
(225 m [738 ft] :
Conditional
application)*
1 000 m [3 281 ft]
40 m [131 ft]
(90 m [295 ft] :
Conditional
application)*
ENGLISH
Header
Method
[656 ft]
225 m
[738 ft]
1 000 m
[3 281 ft]
110 m
[361 ft]
40 m
[131 ft]
40 m
[131 ft]
Pipe Connection Method between outdoor
unit/indoor unit
Master
L2
L3
Indoor
Unit
h 40 m (131 ft)
EF
1st branch
l 40m (131ft)
Slave1
H1
L1
Refrigerant pipe diameter from outdoor unit to first branch
Slave2
Piping length from outdoor branch to outdoor unit ≤ 10 m(33 ft),
equivalent length : max 13 m(43 ft) (for 14 Ton or more)
Additional Application
To satisfy below condition to make 40 m(131 ft) ~ 90 m(295 ft) of
pipe length after first branch.
• Diameter of pipes between first branch and the last branch
should be increased by one step, except pipe diameter B,C,D is
same as Diameter A
Ø 1/4(6.35 mm) ’ Ø 3/8(9.52 mm) ’ Ø 1/2(12.7 mm) ’
Ø 5/8(15.88 mm) ’ Ø 3/4(19.05 mm) ’ Ø 7/8(22.2 mm) ’
Ø 1(25.4)*, Ø 1-1/8(28.58 mm) ’ Ø 1-1/4(31.8 mm)*,
Ø 1-3/8(34.9 mm) ’ Ø 1-1/2(38.1 mm)* ’ Ø 1-5/8(41.3 mm)
* : It is not necessary to size up.
h If the step up size is not available, you can not select the next
higher size available.
•
While calculating whole refrigerant pipe length, pipe B,C,D length
should be calculated twice.
A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1 000 m(3 281 ft)
• Length of pipe from each indoor unit to the closest branch
(a,b,c,d,e) ≤ 40 m(131 ft)
• [Length of pipe from outdoor unit to the farthest indoor unit 5
(A+B+C+D+e)]
- [Length of pipe from outdoor unit to the closest indoor unit 1
(A+a)] ≤ 40 m(131 ft)
Page 22
22
ENGLISH
(Table 2) Refrigerant pipe diameter from outdoor unit to first branch. (A)
• To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
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 ratio 130 % is connected to
24 HP(70 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 130 % indoor
unit combination(91 kW) : 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.
[Example]
Instead of using indoor unit total capacity, use outdoor unit model
name in order to choose main pipe diameter by downward.
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 24 HP(70 kW) outdoor
unit to 130 % of its system capacity (91 kW) and branching
7 kBtu/h(2.2 kW) indoor unit at the 1st branch
Main pipe diameter (24 HP outdoor unit) outdoor unit): Ø 28.58
(1-1/8, Gas pipe) Ø 15.88(5/8, Liquid pipe)
Pipe diameter between 1st and 2nd branch (88.5 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 24 HP(20 Ton) outdoor unit is
Ø 28.58(1-1/8, Gas pipe) and Ø 15.88(5/8, Liquid pipe), Ø 28.58(11/8, Gas pipe) and Ø 15.88(5/8, Liquid pipe) is used as the main
pipe and the connection pipe between 1st and 2nd branch.
ConditionExample
Diameter of pipes
between first branch
and the last branch
1
should be increased by
one step, except pipe
diameter B, C, D is
same as Diameter A
• 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].
Liquid pipe
[mm(inch)]
Gas pipe [mm(inch)]
Ø 6.35(1/4)Ø 12.7(1/2)
500 mm [19.7 inch]
or more
500 mm [19.7 inch]
or more
R
Page 23
23
The maximum pipe
length after the first
branching between the
outdoor units is 10 m
[32.8 ft] or less
2 m [6.6 ft] or less
Oil Trap
Oil TrapOil Trap
2 m [6.6 ft] or less
2 m [6.6 ft] or less2 m [6.6 ft] or less
0.2 m [0.66 ft]
2 m [6.6 ft] or longer
2 m [6.6 ft] or longer
2 m [6.6 ft] or longer
Level
Level
Oil Trap
LevelLevel
Oil Trap
Toward indoor unit
Toward indoor unit
Pipe inclination (2° or more)
Toward indoor unit
Toward indoor unit
Toward indoor unit
Toward indoor unit
Toward indoor unit
≤ 2 m [6.6 ft]
Toward indoor unit
≤ 2 m [6.6 ft]
≥ 2 m [6.6 ft]
≥ 0.2 m [0.66 ft]
Oil Trap
Pipe Connection Method/Precautions for
Series connections between Outdoor units
- Separate Y branch joints are needed for series connections between
outdoor units.
- Y-branches between the outside units must be installed horizontally.
Oil Trap
- Please refer to the below connection examples to install pipe
connections between outdoor units.
Pipe connection between outdoor
units (General Case)
Pipes between outdoor units
are 2 m [6.6 ft] or less
- If pipe is higher than outside unit, oil trap must be installed after each
Y branch.
- Oil trap should be located at same level of Y branch. (Heat Pump :
High Pressure Vapor / Heat Recovery : High Pressure Vapor & Low
Pressure Vapor)
- The pipes between the outdoor units must maintain horizontal
levelness or give an inclination to prevent a back flow toward the
slave outdoor unit. Otherwise, the unit may not operate properly.
(Example 1)
(Example 2)
ENGLISH
Pipes between outdoor units
are 2 m [6.6 ft] or longer
- If the distance between the outdoor units becomes more than 2 m
- If the outdoor unit is located lower than the main pipe, apply Oil Trap.
Examples of Wrong Pipe Connections
- If outside units are located at different level, oil trap must be installed
- Oil trap should be located at same level of Y branch. (Heat Pump :
[6.6 ft], apply Oil Traps between the gas pipes.
after each Y branch.
High Pressure Vapor / Heat Recovery : High Pressure Vapor & Low
Pressure Vapor)
(Example 3)
- 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)
(Example 2)
Page 24
24
h
h
≥ 0.2 m [0.66 ft]
Toward indoor unit
Toward indoor unit
Oil Trap
h
Toward indoor unit
Toward indoor unit
Toward indoor unit
ENGLISH
- When connecting the pipes between the outdoor units, the
accumulation of oil in the slave outdoor unit should be avoided.
Otherwise, the unit may not operate properly.
(Example 1)
(Example 2)
(Example 3)
Attach the additional refrigerant table of IDU.
WARNING
!
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following
equation for human safety.
The amount of Refrigerant
The calculation of the additional charge should take into account the
length of pipe and CF(correction Factor) value of indoor unit.
=
Additional charge[kg(lbs)]
Include only for
Heat Recovery
Total liquid pipe : Ø 25.4 mm (1.0 inch)
+
Total liquid pipe : Ø 22.2 mm (7/8 inch)
+
Total liquid pipe : Ø 19.05 mm (3/4 inch)
+
Total liquid pipe : Ø 15.88 mm (5/8 inch)
+
Total liquid pipe : Ø 12.7 mm (1/2 inch)
+
Total liquid pipe : Ø 9.52 mm (3/8 inch)
+
Total liquid pipe : Ø 6.35 mm (1/4 inch)
+
system
Number of installed HR units
× 0.480 kg/m (0.323 lbs/ft)
× 0.354 kg/m (0.238 lbs/ft)
× 0.266 kg/m (0.179 lbs/ft)
× 0.173 kg/m (0.116 lbs/ft)
× 0.118 kg/m (0.079 lbs/ft)
× 0.061 kg/m (0.041 lbs/ft)
× 0.022 kg/m (0.015 lbs/ft)
× 0.5 kg (1.1 lbs)
※ 6 & 8 Branches
Model : 1.0 kg/EA
(2.2 lbs/EA)
Total amount of refrigerant in the system
Volume of the room at which Indoor Unit of
the least capacity is installed
≤ 0.44 kg/m
(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
3
CF value of indoor unit
Amount refrigerant of Indoor units
Example) 4Way Ceiling Cassette 14.5 kW(48 kBtu/hr) -1 EA,
Ceiling concealed Duct 7.3 kW(24 kBtu/hr)-2 EA,
Wall Mounted 2.3 kW(7 kBtu/hr)-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)
Page 25
25
A
B
A
B
Horizontal plane
View from point B in the direction of the arrow
Refrigerant charging
For Heat Recovery System Installation
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Liquid Pipe
Low Pressure
Gas Pipe
For Heat Pump System Installation
Ⓐ Manifold Gauge
Ⓑ Low Pressure Side Handle
Ⓒ High Pressure Side Handle
High Pressure
Gas Pipe
Branch pipe Fitting
Y branch
Ⓐ To Outdoor Unit
Ⓑ To Branch Piping or Indoor Unit
• Ensure that the branch pipes are attached horizontally or vertically.
(see the diagram below.)
-3° +3°-3° +3°
Straight-through Leg
Y-branch Inlet
Branch Leg
±5°
Horizontal
Plane
±5°
Outdoor Unit is Permitted.Outdoor Unit is Not Permitted.
Vertical UP
Configuration for
Indoor Unit
Y-Branches.
Outdoor unit Y-branches can only be installed in a horizontal or vertical
UP configuration.
The vertical DOWN configuration is not permitted.
• 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.
Vertical DOWN
Configuration for
Indoor Unit
Y-Branches.
Tape
(field supply)
ENGLISH
Liquid Pipe
Not used
Gas Pipe
WARNING
!
• Pipe to be vacuumed : gas pipe, liquid pipe
• If the refrigerant amount is not exact, it may not operate
properly.
• If additionally bottled refrigerant amount is over 10 %,
condenser burst or insufficient indoor unit performance may be
caused.
• Low pressure gas pipe should be sealed with a cap in piping
accessories during refrigerant charging.
Insulator
(included with kit)
Liquid and gas
pipe joints
Insulator for
field piping
Header
Ⓐ 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
C
joint, the connecting section
should be cut with a pipe cutter.
ⓒ Pipe cutter
• When the number of pipes to be
connected is smaller than the
number of header branches,
install a cap to the unconnected
branches.
• When the number of indoor units to be connected to the branch
pipes is less than the number of branch pipes available for
connection then cap pipes should be fitted to the surplus branches.
B
Pinched pipe
• Fit branch pipe lie in a horizontal plane.
Page 26
26
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 19.05(3/4)
O.D 15.88(5/8)
I.D 15.88(5/8)
I.D 12.7(1/2)
O.D 9.52(3/8)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D . 9.52(3/8)
I.D 6.35(1/4)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 15.88(5/8)
O.D 19.05(3/4)
I.D 22.2 (7/8 )
I.D 22.2 (7/8 )
O.D 19.05(3/4)
I.D 25.4(1)
I.D 28.58(1-1/8)
I.D 19.05(3/4)
I.D 22.2(7/8)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 25.4(1)
O.D 19.05(3/4)
I.D 9.52(3/8)
I.D 12.7(1/2)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 12.7(1/2)
I.D 9.52(3/8)
I.D 12.7(1/2)
I.D 6.35(1/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
O.D 19.05(3/4)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 22.2(7/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 28.58(1-1/8)
I.D 31.8(1-1/4)
I.D 34.9(1-3/8)
O.D 31.8(1-1/4)
I.D 28.58(1-1/8)
I.D 31.8(1-1/4)
O.D 22.2(7/8)
I.D 22.2(7/8)
O.D 19.05(3/4)
I.D 28.58(1-1/8)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 22.2(7/8)
I.D 19.05(3/4)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 9.52(3/8)
O.D 12.7(1/2)
I.D 6.35(1/4)
I.D 9.52(3/8)
O.D 12.7(1/2)
I.D 28.58(1-1/8)
I.D 28.58(1-1/8)
O.D 19.05(3/4)O.D 19.05(3/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 25.4(1)
I.D 9.52(3/8)
I.D 22.2(7/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 15.88(5/8)
ENGLISH
• Header should be insulated with the insulator in each kit.
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
• Joints between branch and pipe should be sealed with the tape
included in each kit.
Tape
Insulator
Insulator of field pipe
ModelsPipe
Low-Pressure Vapor Pipe
Liquid pipe
ARBLB03321
High-Pressure Vapor Pipe
• Any cap pipe should be insulated using the insulator provided with
each kit and then taped as described above.
Insulator for cap pipe
Cap pipe
Tape
Y branch pipe
For Heat Recovery System Installation
ModelsPipe
Low-Pressure Vapor Pipe
Liquid pipe
[Unit : mm(inch)]
Low-Pressure Vapor Pipe
Liquid pipe
ARBLB07121
ARBLB01621
High-Pressure Vapor Pipe
High-Pressure Vapor Pipe
Page 27
I.D 19.05(3/4)
O.D 15.88(5/8)
I.D 12.7(1/2)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
292(11-1/2)
281(11-1/16)
74
(2-29/32)
70(2-3/4)
1
1
I.D 12.7(1/2)
292(11-1/2)
281(11-1/16)
74
(2-29/32)
70(2-3/4)
I.D 6.35(1/4)
I.D 6.35(1/4)
I.D 6.35(1/4)
1
1
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 9.52(3/8)
O.D 9.52(3/8)
413(16-1/4)
390(15-11/32)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 12.7(1/2)
I.D 12.7
(1/2)
70(2-3/4)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 25.4(1)
I.D 25.4(1)
O.D 25.4(1)
80(3-5/32)
110(4-11/32)
83
(3-9/32)
1
2
3
3
O.D 19.05(3/4)
O.D 19.05(3/4)
1 2
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 28.58(1-1/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 12.7(1/2)
74
(2-29/32)
332(13-1/16)
321(12-5/8)
I.D 6.35(1/4)
I.D 6.35(1/4)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 12.7
(1/2)
376(14-13/16)
404(15-29/32)
120(4-23/32)120(4-23/32)
90(3-17/32)
I.D 15.88(5/8)
I.D 15.88(5/8)
2
3
1
2
1
3
I.D 19.05(3/4)
I.D 19.05(3/4)
O.D 19.05(3/4)
96
(3-25/32)
I.D 22.2(7/8)
I.D 22.2(7/8)
O.D 22.2(7/8)
I.D 34.9(1-3/8)
I.D 28.58(1-1/8)
I.D 28.58(1-1/8)
I.D 28.58(1-1/8)
O.D 31.8(1-1/4)
I.D 31.8(1-1/4)
I.D 31.8(1-1/4)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 12.7(1/2)
O.D 12.7(1/2)
O.D 12.7(1/2)
70(2-3/4)
110(4-11/32)
371(14-19/32)
394(15-1/2)
83
(3-9/32)
2
3
3
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
2
I.D 6.35(1/4)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 12.7(1/2)
70(2-3/4)
471(18-17/32)
517(20-11/32)
125
(4-29/32)
130(5-1/8)
I.D 15.88(5/8)
I.D 41.3(1-5/8)
I.D 41.3
(1-5/8)
I.D 41.3(1-5/8)
I.D 38.1(1-1/2)
I.D 38.1(1-1/2)
I.D 38.1(1-1/2)
O.D 38.1(1-1/2)
O.D 15.88(5/8)
2
3
3
2
2
3
3
120(4-23/32)
120(4-23/32)
90(3-17/32)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 22.2
(7/8)
I.D 22.2(7/8)
O.D 22.2(7/8)
I.D 34.9(1-3/8)
I.D 34.9(1-3/8)
I.D 34.9(1-3/8)
O.D 34.9(1-3/8)
I.D 28.58(1-1/8)
O.D 28.58(1-1/8)
I.D 28.58(1-1/8)
I.D 12.7(1/2)
O.D 12.7(1/2)
I.D 12.7
(1/2)
110(4-11/32)110(4-11/32)
41616-3/8)
444(17-15/32)
O.D 15.88(5/8)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 19.05(3/4)
O.D 19.05(3/4)
80(3-5/32)
2
3
1
233
96
(3-25/32)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 6.35(1/4)
I.D 9.52(3/8)
I.D 9.52(3/8)
ModelsPipe
I.D 38.1(1-1/2)
I.D 41.3(1-5/8)
O.D 34.9(1-3/8)
I.D 41.3(1-5/8)
O.D 38.1(1-1/2)
I.D 19.05(3/4)
O.D 22.2(7/8)
I.D 15.88(5/8)
I.D 12.7(1/2)
O.D 15.88(5/8)
I.D 22.2(7/8)
O.D 28.58(1-1/8)
I.D 19.05(3/4)
I.D 34.9(1-3/8)
I.D 41.3(1-5/8)
I.D 38.1(1-1/2)
I.D 38.1(1-1/2)
I.D 34.9(1-3/8)
I.D 28.58(1-1/8)
I.D 28.58(1-1/8)
I.D 22.2(7/8)
I.D 34.9(1-3/8)
I.D 15.88(5/8)
I.D 19.05(3/4)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 6.35(1/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
O.D 19.05(3/4)
I.D 15.88(5/8)
I.D 15.88(5/8)
O.D 15.88(5/8)
O.D 12.7(1/2)
O.D 28.58(1-1/8)
I.D 28.58(1-1/8)
I.D 28.58(1-1/8)
I.D 28.58(1-1/8)
I.D 34.9(1-3/8)
O.D 19.05(3/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 25.4(1)
I.D 9.52(3/8)
I.D 22.2(7/8)
I.D 12.7(1/2)
Low-Pressure Vapor Pipe
ARBLB14521
High-Pressure Vapor Pipe
Liquid pipe
27
ENGLISH
ModelsPipe
Gas pipe
ARBLN03321
Liquid pipe
Gas pipe
For Heat Pump System Installation
ModelsPipe
ARBLN01621
Gas pipe
Liquid pipe
ARBLN07121
ARBLN14521
Liquid pipe
Gas pipe
Liquid pipe
Page 28
28
120(4-23/32)
150(5-29/32)
360(14-3/16)
120(4-23/32)
ID 15.88(5/8)
ID 12.7(1/2)
ID 15.88(5/8)
ID 19.05(3/4)
ID 12.7(1/2)
ID 15.88(5/8)
120(4-23/32)
120(4-23/32)
150(5-29/32)
360(14-3/16)
ID 9.52(3/8)
ID 6.35(1/4)
ID 9.52(3/8)
ID 12.7(1/2)
ID 9.52(3/8)
ID 6.35(1/4)
540(21-1/4)
120(4-23/32)
150(5-29/32)
120(4-23/32)
ID 12.7(1/2)
ID 15.88(5/8)
ID 12.7(1/2)
ID 15.88(5/8)
ID 19.05(3/4)
ID 15.88(5/8)
540(21-1/4)
120(4-23/32)
150(5-29/32)
120(4-23/32)
ID 6.35(1/4)
ID 9.52(3/8)
ID 9.52(3/8)
ID 12.7(1/2)
120(4-23/32)
150(5-29/32)
400(15-3/4)
160
ID 19.05(3/4)
ID 15.88(5/8)
ID 22.2(7/8)
ID 28.58(1-1/8) ID 25.4(1)
ID 15.88(5/8)
ID 12.7(1/2)
120(4-23/32)
120(4-23/32)
150(5-29/32)
360(14-3/16)
ID 9.52(3/8)
ID 6.35(1/4)
ID 9.52(3/8)ID 12.7(1/2)
ID 9.52(3/8)
ID 6.35(1/4)
120(4-23/32)
150(5-29/32)
160
580(22-27/32)
ID 19.05(3/4)
ID 15.88(5/8)
ID 15.88(5/8)
ID 12.7(1/2)
ID 22.2(7/8)ID 28.58(1-1/8) ID 25.4(1)
120(4-23/32)
150(5-29/32)
700(27-9/16)
120(4-23/32)
ID 6.35(1/4)
ID 9.52(3/8)
ID 9.52(3/8)
ID 6.35(1/4)
ID 9.52(3/8)ID 12.7(1/2)
120(4-23/32)
150(5-29/32)
160
760(29-29/32)
ID 19.05(3/4)
ID 15.88(5/8)
ID 15.88(5/8)
ID 12.7(1/2)
ID 22.2(7/8)ID 28.58(1-1/8) ID 25.4(1)
120(4-23/32)
150(5-29/32)
720(28-11/32)
ID 6.35(1/4)
ID 9.52(3/8)
ID 9.52(3/8)
ID 6.35(1/4)
ID 12.7(1/2)
ID 9.52(3/8)
120(4-23/32)
ID 28.58(1-1/8)ID 31.8(1-1/4) ID 34.9(1-3/8)
120(4-23/32)
150(5-29/32)
182
775(30-1/2)
ID 19.05(3/4)
ID 15.88(5/8)
ID 15.88(5/8)
ID 12.7(1/2)
120(4-23/32)
150(5-29/32)
107
60*9=540(21-1/4)
700(27-9/16)
ID 6.35(1/4)
ID 9.52(3/8)ID 19.05(3/4)ID 15.88(5/8)
ID 9.52(3/8)
ID 6.35(1/4)
ENGLISH
Header
ModelsPipe
4 branch
ARBL054
Gas pipe
Liquid pipe
Gas pipe
[Unit:mm(inch)]
ModelsPipe
Gas pipe
10 branch
ARBL1010
Liquid pipe
Gas pipe
10 branch
ARBL2010
Liquid pipe
7 branch
ARBL057
4 branch
ARBL104
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
7 branch
ARBL107
Liquid pipe
Page 29
29
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW02C (ȭ: backward)
SW04C (X : cancel)
DIP-SW01
7-Segment
SW01D (reset)
SW03C (ȯ: forward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW02C (ȭ: backward)
SW04C (X : cancel)
DIP-SW01
7-Segment
SW01D (reset)
SW03C (ȯ: forward)
Slave
Master
Header
Slave
Master
Slave
Master
Slave
Master
Slave
Master
Slave
Master
1st
1st
1st
Main pipe
Distribution
2nd
2nd
3rd
3rd
Main pipe
Distribution
Slave
Master
1st
3rd
3rd main pipe distribution
2nd
Distribution Method
Horizontal Distribution
Vertical Distribution
- Ensure that the branch pipes are attached vertically.
Vacuum Mode
ENGLISH
This function is used for creating vacuum in the system after
compressor replacement, ODU parts replacement or IDU addition /
replacement.
Vacuum mode setting method
ARUM***B(D)TE5
ARUM***CTE5
The others
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“SVC” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button : :
“Se3” Push the ‘●’ button
Start the vacuum mode : “VACC”
ODU Valve open
ODU EEV open
IDU EEV open
HR unit valve open, SC EEV open
Vacuum mode off method
DIP switch off and push the reset button on Master unit PCB
CAUTION
!
ODU operation stops during vacuum mode. Compressor can't
operate.
Page 30
30
Liquid Pipe
No use (closed)
Gas Pipe
Liquid Pipe
No use (closed)
Gas Pipe
Slave 1 outdoor unit Master outdoor unit
Nitrogen Gas
Cylinder
Indoor
Unit
Liquid Pipe
Gas Pipe
Close
Close
Close
Close
Close
Close
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.
Vacuum
pump
Vacuum
pump
Indoor unit
Slave 1 outdoor unitMaster outdoor unit
Liquid pipe
High Pressure
Gas pipe
High Pressure
Gas pipe
Liquid pipe
Low Pressure
Gas pipe
Low Pressure
Gas pipe
Liquid side
Gas side
Close
Close
Close
Close
Close
Close
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.
Indoor unit
Liquid pipe
Gas pipe
Gas pipe
Liquid pipe
No use (closed)
No use (closed)
Liquid side
Gas side
Slave 1 outdoor unitMaster outdoor unit
Close
Close
Close
Close
Close
Close
Liquid Pipe
Low Pressure
Gas Pipe
High Pressure
Gas Pipe
Liquid Pipe
Low Pressure
Gas Pipe
High Pressure
Gas Pipe
Nitrogen Gas
Cylinder
Nitrogen Gas
Cylinder
Slave 1 outdoor unit Master outdoor unit
Close
Close
Close
Close
Close
Close
Indoor
Unit
Liquid Pipe
HR unit
Gas Pipe
ENGLISH
Leak Test and Vacuum drying
Leak test
Leak test should be made by pressurizing nitrogen gas to 3.8 MPa
(551.1 psi). 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.
Series Installation (Heat Recovery)
When inserting nitrogen
gas of high pressure, it
must be used with
regulator.
Series Installation (Heat Pump)
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.
WARNING
!
Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
NOTE
!
If the ambient temperature differs between the time when pressure is
applied and when the pressure drop is checked, apply the following
correction factor
There is a pressure change of approximately 0.01 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
When inserting nitrogen
gas of high pressure, it
must be used with
regulator.
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.
Series Installation (Heat Recovery)
Series Installation (Heat Pump)
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.
Page 31
NOTE
A
C
D
E
B
F
A
Communication lines
Separation
Power lines
E
D
D
B
A
C
A
B
E
B
I
A
B
D
C
1 m
(3.28 ft)
1 m
(3.28 ft)
D
F
G
B
G
D
B
H
I
J
A
F
!
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.
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
material
Outer
covering
Ⓐ Heat insulation material
Ⓑ Pipe
Ⓒ Outer covering(Wind the connection part and cutting part of heat
Penetrating portion on fire
limit and boundary wall
Roof pipe shaft
31
ENGLISH
NOTE
!
When using polyethylene cover as covering material, asphalt
roofing shall not be required.
Ⓐ Sleeve
Ⓑ Heat insulating material
Ⓒ Lagging
Ⓓ Caulking material
Ⓔ Band
Ⓕ Waterproofing layer
Bad example
• Do not insulate gas or low pressure pipe and liquid or
highpressure pipe together.
Ⓐ Liquid pipe
Ⓑ Gas pipe
Ⓒ Power lines
Ⓓ
Finishing tape
Ⓔ
Insulating material
Ⓕ
Communication lines
Ⓖ 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.)
• Be sure to fully insulate connecting portion.
Ⓐ
These parts are not insulated.
Page 32
32
Master Slave
Master Slave
Master Slave1 Slave2
Master Slave1 Slave2
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Master Slave1 Slave2
Master Slave1 Slave2
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Master Slave
Master Slave
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Indoor
Unit
Round pressure terminal
Power cable
ENGLISH
ELECTRICAL WIRING
Caution
- Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and
guidance of each electric power company.
WARNING
!
Be sure to have authorized electrical engineers do the electric
work using special circuits in accordance with regulations and this
installation manual.
If power supply circuit has a lack of capacity or electric work
deficiency, it may cause an electric shock or fire.
Install the Outdoor Unit communication cable away from the power
-
source wiring so that it is not affected by electric noise from the power
source. (Do not run it through the same conduit.)
- Be sure to provide designated grounding work to Outdoor Unit.
CAUTION
!
Be sure to correct the outdoor unit to earth. Do not connect ground
wire to any gas pipe, liquid pipe, lightening rod or telephone earth
line. If earth is incomplete, it may cause an electric shock.
- Give some allowance to wiring for electrical part box of Indoor and
Outdoor Units, because the box is sometimes removed at the time of
service work.
- Never connect the main power source to terminal block of
communication cable. If connected, electrical parts will be burnt out.
- Use the 2-core shielded wires or 2-core unshielded 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)
- Only the communication cable specified should be connected to the
terminal block for Outdoor Unit communication.
2-core shielded cables or 2-core unshielded wires
Multi-Core Cable
CAUTION
!
• Use the 2-core shielded wires or 2-core unshielded 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.
Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal
block.
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.
Page 33
33
Control box and connecting position of wiring
- Remove all of the screws at front panel and remove the panel by
pulling it forward.
- Connect communication cable between main and slave 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.
- Be sure to also make grounding connections to ground screws when
connecting shielded wires to the central control system.
Front Panel
Communication and Power Cables
Communication cable
- Types : shielded wires or unshielded wires
- Cross section : 1.0 ~ 1.5 mm
- 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 typeCable typeDiameter
ACP&AC Manager
AC Smart
Simple central controller
CAUTION
!
In case of using the shielded wires, it should be grounded.
2
(1.55 × 10-3~ 2.32 × 10-3in2)
2-core cable (Shielding cable)
2-core cable (Shielding cable)
4-core cable (Shielding cable)
1.0 ~ 1.5 mm
(1.55 × 10-3~
2.32 × 10-3in2)
1.0 ~ 1.5 mm
(1.55 × 10-3~
2.32 × 10-3in2)
1.0 ~ 1.5 mm
(1.55 × 10-3~
2.32 × 10-3in2)
ENGLISH
2
2
2
WARNING
!
The temperature sensor for outdoor air should not be exposed to
direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
UXB
Main Board
External Board
Main power line
terminal block
(Take care of the phase
sequence of 3-phases
3-wires power system)
UXA
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 cableSpacing
10 A300 mm (11-13/16 inch)
100 V or more
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.
50 A500 mm (19-11/16 inch)
100 A1 000 mm (39-3/8 inch)
Exceed 100 A1 500 mm (59-1/16 inch)
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.
Page 34
34
Switch
ELCB
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
ELCB
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Outdoor Unit]
[Indoor Units]
Power supply
3 Phase 3 Wires
60 Hz 208/230 V
Power supply
1 Phase 60 Hz
208/230 V
(Main Switch)
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
HR unit
L(L1) N(L2)
R(L1)
S(L2) T(L3)
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
(Main Switch)
[Slave]
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
es Cable
Power
(2 Wires
(2 Wires C
(2 Wires Cab
[
[Sla
Power L
Wire
Power supply
3 Phase 3 Wires
60 Hz 208/230 V
Power supply
1 Phase 60 Hz
208/230 V
RST
Switch
ELCB
ELCB
L(L1) N(L2)
Power Line
Switch
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
Power supply
3 Phase 3 Wires
60 Hz 208/230 V
Power supply
1 Phase 60 Hz
208/230 V
(Main Switch)
[Slave]
Switch
ELCBELCB
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
HR unit
ELCB
L(L1) N(L2)
R(L1)
S(L2) T(L3)
R(L1)
S(L2) T(L3)
HR unit
3(A) 4(B)3(A) 4(B)3(A) 4(B)3(A) 4(B)
AB
Master
Outdoor Unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12 V
ENGLISH
Wiring of main power supply and equipment
capacity
- Use a separate power supply for the Outdoor Unit and Indoor Unit.
- Bear in mind ambient conditions (ambient temperature,direct
sunlight, rain water,etc.) when proceeding with the wiring and
connections.
- The cable size is the minimum value for metal conduit wiring. The
power cord size should be 1 rank thicker taking into account the line
voltage drops. Make sure the power-supply voltage does not drop
more than 10 %.
- Specific wiring requirements should adhere to the wiring regulations
of the region.
- Power supply cords of parts of appliances for outdoor use should not
be lighter than polychloroprene sheathed flexible cord.
- Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally. Running the product in reversed phase may break the
compressor and other parts.
• When using shielded wires, perform a single-point grounding only
to the outdoor unit for grounding of communication wires.
WARNING
!
• Follow ordinance of your governmental organization for
technical standard related to electrical equipment, wiring
regulations and guidance of each electric power company.
• Make sure to use specified cables for connections so that no
external force is imparted to terminal connections. If
connections are not fixed firmly, it may cause heating or fire.
• Make sure to use the appropriate type of overcurrent protection
switch. Note that generated overcurrent may include some
amount of direct current.
CAUTION
!
• All installation site must 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.
Field Wiring
208/230 V
Example Connection of Communication Cable
1 Outdoor Unit-3 Ø, 208/230 V
Between Indoor and Master Outdoor unit
2 Outdoor Units-3 Ø, 208/230 V
When the power source is connected In series between the units.
Master]
When the power source is supplied to Each outdoor unit individually.
Page 35
35
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
(Main Switch)
[Slave1] [Slave2]
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Communic
Po
(2 Wire
Power
(2 Wires
[
]
[Slav
Power Line
Switch
ELCB
ELCB
Power supply
3 Phase 3 Wires
60 Hz 208/230 V
Power supply
1 Phase 60 Hz
208/230 V
L(L1) N(L2)
R(L1)
S(L2) T(L3)
Switch
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
Power supply
3 Phase 3 Wires
60 Hz 208/230 V
Power supply
1 Phase 60 Hz
208/230 V
(Main Switch)
[Slave1] [Slave2]
Switch Switch
ELCBELCBELCB
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
HR unit
ELCB
L(L1) N(L2)
R(L1)
S(L2) T(L3)
R(L1)
S(L2) T(L3)
R(L1)
S(L2) T(L3)
NOTE
!
- Field wiring diagram is to be used as a guidelineonly. Wiring
should comply with applicable local and national codes
- ELCB must have function to prevent electrical short and over
current at the same time.
- Use copper wires only.
- Unit must be grounded in compliance with the applicable local
and national codes.
- ELCB and fuse/breaker must install to the power line
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally. Running the product in reversed phase may break the
compressor and other parts.
Between Indoor and Master Outdoor unit
When the power source is supplied to Each outdoor unit individually.
NOTE
!
- Field wiring diagram is to be used as a guidelineonly. Wiring
should comply with applicable local and national codes
- ELCB must have function to prevent electrical short and over
current at the same time.
- Use copper wires only.
- Unit must be grounded in compliance with the applicable local
and national codes.
- ELCB and fuse/breaker must install to the power line
ENGLISH
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12 V
AB
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
3(A) 4(B)3(A) 4(B)3(A) 4(B)3(A) 4(B)
Master
Outdoor Unit
Master
Outdoor Unit
Slave
Outdoor Unit
• 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)
3 Outdoor Units-3 Ø, 208/230 V
When the power source is connected In series between the units.
Master
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally. Running the product in reversed phase may break the
compressor and other parts.
Between Indoor and Master Outdoor unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12 V
AB
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
3(A) 4(B)3(A) 4(B)3(A) 4(B)3(A) 4(B)
Master
Outdoor Unit
Master
Outdoor Unit
Slave1
Outdoor Unit
Slave2
Outdoor Unit
• 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)
Page 36
36
Switch
ELCB
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
ELCB
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Outdoor Unit]
[Indoor Units]
Power supply
3 Phase 3 Wires
60 Hz 460 V / 575 V
Power supply
1 Phase 60 Hz
208/230 V
(Main Switch)
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
HR unit
L(L1) N(L2)
R(L1)
S(L2) T(L3)
Master
Outdoor Unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12 V
HR unit
AB
3(A) 4(B)3(A) 4(B)3(A) 4(B)3(A) 4(B)
Switch
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
Power supply
3 Phase 3 Wires
60 Hz 460 V / 575 V
Power supply
1 Phase 60 Hz
208/230 V
(Main Switch)
[Slave]
Switch
ELCBELCB
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
HR unit
ELCB
L(L1) N(L2)
R(L1)
S(L2) T(L3)
R(L1)
S(L2) T(L3)
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
(Main Switch)
[Slave]
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
HR unit
Power supply
3 Phase 3 Wires
60 Hz 460 V / 575 V
Power supply
1 Phase 60 Hz
208/230 V
Switch
ELCB
ELCB
L(L1) N(L2)
R(L1)
S(L2) T(L3)
ENGLISH
460 V / 575 V
Example Connection of Communication Cable
1 Outdoor Unit-3 Ø, 460 V / 575 V
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally. Running the product in reversed phase may break the
compressor and other parts.
Between Indoor and Master Outdoor unit
When the power source is supplied to Each outdoor unit individually.
NOTE
!
- Field wiring diagram is to be used as a guideline only. Wiring
should comply with applicable local and national codes
- ELCB must have function to prevent electrical short and over
current at the same time.
- Use copper wires only.
- Unit must be grounded in compliance with the applicable local
and national codes.
- ELCB and fuse/breaker must install to the power line
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the product
is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor
and other parts.
2 Outdoor Units-3 Ø, 460 V / 575 V
When the power source is connected In series between the units.
Between Indoor and Master Outdoor unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12 V
AB
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
3(A) 4(B)3(A) 4(B)3(A) 4(B)3(A) 4(B)
Master
Outdoor Unit
Master
Outdoor Unit
Slave
Outdoor Unit
• 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)
Page 37
37
Switch
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
Power supply
3 Phase 3 Wires
60 Hz 460 V / 575 V
Power supply
1 Phase 60 Hz
208/230 V
(Main Switch)
[Slave1] [Slave2]
Switch Switch
ELCBELCBELCB
Pull box
(Installer option)
Pull box
(Installer option)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
HR unit
ELCB
L(L1) N(L2)
R(L1)
S(L2) T(L3)
R(L1)
S(L2) T(L3)
R(L1)
S(L2) T(L3)
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Communication Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
[Master]
[Indoor Units]
(Main Switch)
[Slave1] [Slave2]
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
HR unit
Switch
ELCB
ELCB
Power supply
3 Phase 3 Wires
60 Hz 460 V / 575 V
Power supply
1 Phase 60 Hz
208/230 V
L(L1) N(L2)
R(L1)
S(L2) T(L3)
3 Outdoor Units-3 Ø, 460 V / 575 V
When the power source is connected In series between the units.
When the power source is supplied to Each outdoor unit individually.
Between Indoor and Master Outdoor unit
SODU. B SODU. A IDU. B IDU. A CEN. B CEN. A DRY1 DRY2 GND 12 V
AB
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
3(A) 4(B)3(A) 4(B)3(A) 4(B)3(A) 4(B)
Master
Outdoor Unit
Master
Outdoor Unit
Slave1
Outdoor Unit
Slave2
Outdoor Unit
• It is not the point to make ground connection.
- Make sure that terminal number of master and slave outdoor units
are matched.(A-A, B-B)
ENGLISH
NOTE
!
- Field wiring diagram is to be used as a guideline only. Wiring
should comply with applicable local and national codes
- ELCB must have function to prevent electrical short and over
current at the same time.
- Use copper wires only.
- Unit must be grounded in compliance with the applicable local
and national codes.
- ELCB and fuse/breaker must install to the power line
WARNING
!
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the product
is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor
and other parts.
Example) Connection of transmission wire
[BUS type]
- Connection of communication cable must be installed like below
figure between indoor unit to outdoor unit.
HR unit
[STAR type]
- Abnormal operation can be caused by communication defect, when
connection of communication cable is installed like below figure.
HR unit
Page 38
38
Gap : Over
50 mm(1.97’’)
When connecting
Main power lines
/ Ground wire from left side
When connecting
Communication wires
/ Ground wire from left side
Main power
terminal block
Ground wire
Main power
terminal block
Insulation sleeves
attachments
Ground wire
Ground wire
ODU-IDU
Communication
cable
ODU-ODU
Communication
cable
Main power
terminal block
Ground wire
When connecting
Communication wires
/ Ground wire from
front guide panel
When connecting
Main power lines
/ Ground wire from
front guide panel
Gap : Over
50 mm(1.97’’)
Main power
terminal block
Ground wire
Gap : Over
50 mm(1.97’’)
When connecting
Main power lines
/ Ground wire from left side
When connecting
Communication wires
/ Ground wire from left side
DIP switch
7 segment
SW01C (Automatic
Addressing Setting)
Main power
terminal block
Insulation sleeves
attachments
Ground wire
ODU-IDU
Communication
cable
ODU-ODU
Communication
cable
Ground wire
Main power
terminal block
Ground wire
When connecting
Communication wires
/ Ground wire from
front guide panel
When connecting
Main power lines
/ Ground wire from
front guide panel
Gap : Over
50 mm(1.97’’)
ENGLISH
Example) Connection of power and communication cable (UXA)
Bottom Side
Front Side
Fix firmly with cable tie
or clamp cord not to be
displaced
Main power line
connection
Front Side
Fix firmly with cable tie or
clamp cord not to be displaced
Communication/Ground
wire connection
Main power line
connection
CAUTION
!
Communication/Ground
wire connection
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 the setting of outdoor units
Checking according to DIP switch setting
- You can check the setting values of the Master outdoor unit from the
7 segment LED.
The DIP switch setting should be changed when the power is OFF.
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.
Example) Connection of power and communication cable (UXB)
Bottom Side
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.
[Main Board]
ARUM***B(D)TE5
Page 39
39
DIP switch
7 Segment
SW01C
(Automatic Addressing Setting)
7 segmentDIP Switch
Reset button
DIP switch
7-Segment
Reset button
ARUM***CTE5
• Communication speed setting
The factory setting of DIP switch 3 differs depending on production date.
- Set the DIP switch 3 to “On” if all the indoor units are “ARN*******4”.
-
Set the DIP switch 3 to “Off” if not all the indoor units are “ARN*******4”.
!
CAUTION
1. Set the DIP switch No. 3 “On” and if not all the indoor units are
“ARN*******4” connected, normal communication is impossible,
so DIP switch No. 3 must be set to “Off”.
2. When changing DIP switch, all power should be off and auto
addressing must be executed.
• Initial display order
OrderHP(Ton)Mean
①
8(6)~24(20)Master unit capacity
②
26(22)~44(36)Slave 1 unit capacity
③
46(38)~52(42)Slave 2 unit capacity
④
8(6)~52(42)Total capacity
⑤
⑥
⑦
• Example) ARUM480BTE5
①②③④⑤⑥⑦
221412483221
HP810121418202224
TON68101214161820
• Master Unit
DIP switch
setting
3Heat Recovery (Factory Setting)
46460 V model
57575 V model
22208/230 V model
30Full function
48 HP 208/230 V Heat Recovery system
(Master unit: 22 HP, Slave 1: 14 HP, Slave 2: 12 HP)
• Slave Unit
ODU Setting
Heat Recovery
System (Factory
Setting)
DIP switch
setting
ODU Setting
Slave 1
ENGLISH
DIP switch No. 3OffOn
Comm. Speed1200 bps9600 bps
ARUM***B(D)TE5
ARUM***CTE5
Slave 2
h Heat Pump installation
① Turn on the DIP s/w No 4.
DIP switch
setting
② The factory setting display is appeared “HR”.
③ Change “HR” into “HP” 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.)
ODU Setting
Setting Heat pump
system or Heat Recovery
system (Installer Setting)
Page 40
40
SW02M
0
ENGLISH
Setting For Heat Recovery Unit (Refer Only Heat
Recovery Installation)
[Heat Recovery (HR) Unit Board]
2 Series
#4 valve housing
#1 valve housing
SW02M
(DIP switch for setup of
The function of HR unit)
SW03M
3 Series
ڸڹںڻڼڽھڿ
SW04M
Branch No.
7-SEG
SW05M
SW01M
SW01M/SW03M/SW04M
(Switch for manual valve
addressing)
Switch for setup of HR Unit
2 Series
Main function of SW02M
ON
Selection
S/W
Method for addressing valves of an
No.1
HR 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
No.6 Valve group setting
Use only in factory
No.7
production (preset to
“OFF”)
Use only in factory
No.8
production (preset to
“OFF”)
1 Selection of the method for addressing valves of an HR unit
(Auto/Manual)
Zoning
setting
(“ON”)
Main PCB (2EA, same P/No)
Liquid
Bypass
Valve
7-SEG
Branch #1~4
Bypass
(from left)
SC EEV
- SW01D/SW01C/
SW02B/SW01B/SW02E
- SW01E : Branch #1~4 (from
SW No.1)
Branch #3,4
High/Low
(from top)
Branch #1,2
High/Low
(from top)
7-SEG
Branch #5~8
Bypass
(from left)
- SW02E : Use only SW
- SW01E : Branch #5~8
- SW01C
No.5
(from SW No.1)
Main PCB (Master)Main PCB (Slave)
* Number from left in sequence for less-than-8 branch model.
** PRHR043A / PRHR033A / PRHR023A : Master Only
Branch #7,8
High/Low
(from top)
Branch #5,6
High/Low
(from top)
Switch No.1 OnSwitch No.1 Off
AutoManual
2 Setting the zoning control
DIP Switch setting
Normal
control
Zoning
control
* Zoning control
This function is used to connect multiple indoor units to one pipe.
3 Series
SWFunction
SW02E
(8pin
DIP
DIP SW)
SW
Turn the DIP switch of
the zoning branch on.
Ex) Branch 1,2 are
zoning control.
Selection of the method for
pipe detection
Selection of Master/Slave
Main PCB
Setting the Zoning Control
Selection of the No. of
connected branches
Rotary
SW
Push
SW
SW01E
(4pin
DIP SW)
SW01D
(Left)
SW01C
(Right)
SW02B
(Left)
SW01B
(Right)
Selection of the valve to
address
Selection of the Valve
Group Control
Manual addressing of
zoning indoor units
Setting to address HR units
Increase in the digit of 10
Increase in the digit of 1
Page 41
41
1
2
1
2
3
1
2
3
4
1
2
3
4
5
6
1
2
3
4
5
6
7
8
Main function of SW02E
ON S/WSelection
No.1Method for pipe detection of an HR Unit (Auto/Manual)
No.2
No. of connected branchesNo.3
No.4
No.5Master/Slave (Main PCB) Setting
No.6EEPROM factory initialization (4,5,6)
No.7
No.8
Use only in factory production
(preset to "OFF")
Use only in factory production
(preset to "OFF")
Zoning setting ("ON")
3 Selection of the model of HR unit
2 Series
3
2
1
(For 4 branches)
PRHR042A
Initial
Setting
1 branches
Connected
2
1
(For 2 branches)
PRHR022A
(For 3 branches)
PRHR032A
3 Series
PRHR023A
PRHR033A
PRHR043A
ENGLISH
1 branch
Connected
2 branch
Connected
3 branch
Connected
4 branch
Connected
5 branch
Connected
4
3
2
1
6 branch
Connected
7 branch
Connected
8 branch
Connected
2 branches
Connected
3 branches
Connected
4 branches
Connected
* 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 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 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 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.
1 branch
Connected
2 branch
Connected
3 branch
Connected
4 branch
Connected
5 branch
Connected
6 branch
Connected
7 branch
Connected
8 branch
Connected
PRHR063A
PRHR083A
WARNING
!
If you want to use a “Model” for “No. of using branch(es)” HR
Unit after closing the “Closing pipe No.”, set the DIP switch for
“No. of using branch(es)” HR Unit.
Ex) If you want to use a PRHR083A for 4 branches HR Unit after
closing the 5~8th pipes, set the DIP switch for 4 branches HR
Unit.
Page 42
42
SW01M
SW03M
SW04M
SW01M
SW03M
SW04M
SW05M
O.D 19.05
I.D 22.2
I.D 22.2
O.D 19.05
I.D 25.4
I.D 28.58
I.D 19.05
I.D 22.2
I.D 15.88
I.D 19.05
I.D 12.7
I.D 12.7
I.D 15.88
I.D 19.05
I.D 25.4
O.D 19.05
I.D 9.52
I.D 12.7
I.D 9.52
I.D 6.35
I.D 12.7
I.D 9.52
I.D 12.7
I.D 6.35
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
ENGLISH
4 Setting the Valve Group.
2 Series
DIP S/W settingExample
Indoor Unit
Indoor Unit
Not control
No.1, 2 Valve
Control
No.2, 3 Valve
Control
No.3, 4 Valve
Control
No.1, 2 Valve
/
No.3, 4 Valve
Control
* Setting the Valve Group
This function is used to connect one indoor unit to two pipes. (Large
capacity indoor unit over 56 kBtu must be connected to two pipes.)
NOTE
!
If the large capacity indoor units are installed, below Y branch pipe
should be used.
Y branch pipe
ModelsLow pressure Gas pipeLiquid pipe
ARBLN
03321
Indoor Unit
Indoor Unit
Indoor Unit
Indoor Unit
Large capacity indoor unit
Indoor Unit
Indoor Unit
Large capacity indoor unit
Large capacity indoor unit
Indoor Unit
Indoor Unit
Large capacity indoor unit
Large capacity indoor unit
(Unit: mm [inch])
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'.
Ex) Installation of 3 HR units
ABABAB
4
3
2
1
4
3
2
1
4
3
2
1
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.Setup
No.1Manual addressing of valve #1
No.2Manual addressing of valve #2
No.3Manual addressing of valve #3
No.4Manual addressing of valve #4
SW03M
SW04M
2 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
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.
Increase in the digit of 10 of valve
address
Increase in the last digit of valve
address
S/W No.Setup
No.1Manual addressing of valve #1
No.2Manual addressing of valve #2
No.3Manual addressing of valve #3
No.4Manual addressing of valve #4
SW03M
Increase in the digit of 10 of valve
address
SW04M Increase in the last digit of valve address
SW05M Manual addressing of zoning indoor units
Page 43
43
413(16-1/4)
390(15-11/32)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 19.05(3/4)
I.D 12.7(1/2)
I.D 12.7
(1/2)
70(2-3/4)
I.D 15.88(5/8)
I.D 15.88(5/8)
I.D 25.4(1)
I.D 25.4(1)
O.D 25.4(1)
80(3-5/32)
110(4-11/32)
83
(3-9/32)
1
2
3
3
O.D 19.05(3/4)
O.D 19.05(3/4)
1
2
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 28.58(1-1/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
I.D 12.7(1/2)
74
(2-29/32)
332(13-1/16)
321(12-5/8)
I.D 6.35(1/4)
I.D 6.35
(1/4)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 9.52(3/8)
I.D 15.88(5/8)
I.D 12.7(1/2)
I.D 12.7(1/2)
70(2-3/4)
I.D 25.4(1)
110(4-11/32)
I.D 19.05(3/4)
I.D 19.05(3/4)
2
32
3
O.D 15.88(5/8)
444(17-15/32)
421(16-9/16)
96
(3-25/32)
I.D 15.88
(5/8)
I.D 22.2(7/8)
I.D 22.2(7/8)
I.D 22.2(7/8)
O.D 15.88(5/8)
I.D 19.05(3/4)
I.D 9.52(3/8)
SW01E
SW02B
SW01B
SW01B
3 Series
Main function of SW01D
- Selection of the Valve Group Control
NOTE
!
Use the Valve Group Control when 2 branches are connected with
only 1 indoor unit which has higher capacity than 61 kBtu.
* Master Only
Valve Group
SW01D
Setting
Valve Group
SW01D
Not control0No. 5,6/7,8 Valve Control8
No. 1,2 Valve Control1No. 1,2/5,6 Valve Control9
No. 2,3 Valve Control2No. 1,2/7,8 Valve ControlA
No. 3,4 Valve Control3No. 3,4/5,6 Valve ControlB
No. 5,6 Valve Control4No. 3,4/7,8 Valve ControlC
No. 6,7 Valve Control5
No. 7,8 Valve Control6
No. 1,2/3,4 Valve
Control
7
No. 1,2/3,4/5,6 Valve
Control
No. 1,2/3,4/6,7 Valve
Control
No. 1,2/3,4/7,8 Valve
Control
Setting
D
E
F
SW01C (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'.
Maximum 16 HR Units can be installed.
Ex) Installation of 3 HR units
* Master Only
ABABAB
SW01B/SW01C/SW01E/SW02B
(DIP S/W and push S/W for Manual pipe detection)
- Set the address of the valve of the HR unit to the central control
address of the connected indoor unit.
- SW01E: selection of the valve to address
SW02B: increase in the digit of 10 of valve address
SW01B: increase in the last digit of valve address
SW01C: Manual addressing of zoning indoor units
(use for Zoning setting)
- Prerequisite for Manual pipe detection : central control address of
each indoor unit must be preset differently at its wired remote
control.
S/W No.Setup
ENGLISH
NOTE
!
If the large capacity indoor units are installed, below Y branch pipe
should be used.
h Y branch pipe
[Unit : mm(inch)]
ModelsLow Pressure Gas PipeLiquid pipe
ARBLB03321
ModelsHigh Pressure Gas Pipe
ARBLB03321
* Use for Zoning setting
No.1
No.2
No.3
No.4
SW02B
SW01B
SW01C
Manual addressing of valve #1
(Master) / #5 (Slave)
Manual addressing of valve #2
(Master) / #6 (Slave)
Manual addressing of valve #3
(Master) / #7 (Slave)
Manual addressing of valve #4
(Master) / #8 (Slave)
Increase in the digit of 10 of valve
address
Increase in the last digit of valve
address
Manual addressing of zoning indoor
units
Page 44
44
t
ENGLISH
1 Normal setting (Non-Zoning setting)
Automatic Addressing
ex) Manual pipe detection of Valve #1, 6.
Master
ON
OFF
SW01E
SW #1 On : Select Valve #1
Slave
ON
OFF
SW01E
SW #2 On : Select Valve #6
Master
SW02B SW01B
Input the central control
address of Indoor unit
Slave
SW02B SW01B
Input the central control
address of Indoor unit
Master
ON
OFF
SW01E
SW #1 Off : Finish Valve #1
Slave
ON
OFF
SW01E
SW #2 Off : Finish Valve #6
2 Zoning setting
NOTE
!
Use the Zoning Control when install two or more indoor units at 1
branch of HR Unit.
The indoor units controlled by Zoning Control can be selected
collectively as the cooling / heating mode.
ex) Manual pipe detection of Valve #5 with three zoning indoor units,
#6 without zoning unit.
Slave
ON
Slave
SW01C
0
Slave
SW01C
1
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]
ARUM***B(D)TE5
DIP switch
7 segment
SW01C
(Automatic Addressing Setting)
OFF
SW01E
SW #1 On : Select Valve #5
Slave
SW02B
indoor unit, input the central
control address of indoor unit.
Slave
ON
OFF
SW #2 On : Select Valve #6
SW01C
SW01E
2
SW01B
SW02B SW01B
After selecting No.1 zoning
indoor unit, input the central
control address of indoor unit.
Slave
Setting SW01C to ‘0’After selecting No.3 zoning
Slave
SW02B SW01B
Input the central control
address of Indoor unit
SW01C
0
SW02B
SW01B
After selecting No.2 zoning
indoor unit, input the central
control address of indoor unit.
Slave
ON
OFF
SW01E
SW #1 Off : Finish Valve #5
Slave
ON
OFF
SW01E
SW #2 Off : Finish Valve #6
ARUM***CTE5
DIP switch
7 Segmen
SW01C
(Automatic Addressing Setting)
Page 45
45
The Procedure of Automatic Addressing
Power On
Waiting 3 minutes
Press RED Button for
5 seconds (SW01C)
7-segment LED = 88
Don’t press RED Button
(SW01C)
Waiting about 2~7 minutes
7-segment LED
= 88
YES
OK
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
Setting For Heat Recovery Unit (Refer Only Heat Recovery Installation)
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 :“Atc” or “”Ath”
Push the ‘●’ button.
Outdoor temperature is over 15 °C(59 °F) : “Ath” Using (If it fail, use
“Atc”)
Outdoor temperature is below 15 °C(59 °F) : “Atc” Using (If it fail,
use “Ath”)
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 segment 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 on 7
segment 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.
Automatic addressing process start
• Automatic addressing process end
Numbers of indoor unit connected are indicated for 30
seconds on 7-segment LED after completing process.
NOCheck the connections
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.
of communication cable
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.
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
unit to the central control address of the indoor unit connected to
the valve.
5 Reset the power of outdoor unit PCB.
6 The number of the indoor unit installed is displayed after about 5
minutes.
Ex) HR ‡ The number of the indoor
7 Reset the power of outdoor unit PCB, HR unit.
8 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.
• Do not set central control address of indoor unit to ‘0xFF’. (If the
address is ‘0xFF’, pipe detection will not be completed properly.)
•
HR units’s manual pipe address is set by the central control
address 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
properly)
•
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.
ENGLISH
Page 46
46
Reset the power of HR unit PCB
Confirm that the setting of No.2, 3 of
SW02M corresponds with the valve
connection type
88' is displayed on 7-SEG of the outdoor
unit main PCB
Outdoor unit is operated for 5~60 minutes
The number of indoor units detected is
displayed for 30 seconds on the outdoor
unit PCB after outdoor unit stopped
Display error on outdoor unit PCB
Display error on HR unit PCB
Outdoor unit PCB : HR ơ HR unit
number ơ Valve number
HR unit : '200'
Check the HR unit and indoor unit
Does the setting
status satisfy indoor unit’s
configuration properly
during operation?
Confirm indoor unit’s address setting
Turn No.1 of DIP s/w SW02M of HR unit PCB off.
NO
YES
Master Outdoor unit’s PCB DIP switch on : No.5
Select the mode using ‘ȯ’, ‘ȭ’ Button :
“Idu” Push the ‘Ɨ’ button
Select the mode using ‘ȯ’, ‘ȭ’ Button :
“Idu” Push the ‘Ɨ’ button
Select the “Id 6” function using ‘ȯ’, ‘ȭ’
Button :“StA” 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 “Ath” (if fails, use “Atc”)
Outdoor temperature is below 15 °C(59 °F)
: Select “Atc” (if fails, use “Ath”)
* 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.
Completion of auto pipe detection Process
Is the number
of indoor units connected and
displayed one equal?
Pipe detection error occurs for 30
seconds.
Check the installation status of
outdoor, indoor, HR unit
Incompletion of auto detection Process
Retry auto pipe detection Process
after fixing wrong installation
NO
YES
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW02C (ȭ: backward)
SW04C (X : cancel)
DIP-SW01
7-Segment
SW01D (reset)
SW03C (ȯ: forward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW02C (ȭ: backward)
SW04C (X : cancel)
DIP-SW01
7-Segment
SW01D (reset)
SW03C (ȯ: forward)
ENGLISH
Flow chart of auto pipe detection Process
ARUM***B(D)TE5
ARUM***CTE5
Page 47
47
7-SEGSW01M SW03M SW04M
7-SEGSW01M SW03M SW04M
7-SEGSW01M SW03M SW04M
7-SEGSW01M SW03M SW04M
7-SEGSW01M SW03M SW04M
Flow chart of manual addressing for pipe
detection
Execute in case of Auto pipe detection
failure
Turn No.1 of SW02M of HR unit PCB on.
Reset the power of HR unit PCB.
Input the central control address at
each indoor unit using wired remote
controller.
Set the address of each valve manually
by referring indoor unit’s central control
address connected with.
Reset the power of outdoor unit PCB.
Wait for about 5 minutes.
The number of the indoor units connected
is displayed.
Ex)HR
The number of connected indoor units
Is the number
of indoor units connected with the
outdoor unit and displayed number
equal?
YES
NO
Check the central control address of
indoor and HR unit.
Example of manual valve addressing (Non-Zoning
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 setupSetup and Contents
1
2
3
4
5
- 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.)
- 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
ENGLISH
Completion of manual pipe detection Process
Make sure that reset the outdoor
unit’s
power after setting central control
address of indoor units.
Page 48
48
7-SEG SW01M SW03M SW04M
0
SW05M
7-SEG SW01M SW03M SW04M
SW05M
0
7-SEG SW01M SW03M SW04M
SW05M
0
1
7-SEG SW01M SW03M SW04M
SW05M
7-SEG SW01M SW03M SW04M
SW05M
1
7-SEG SW01M SW03M SW04M
SW05M
1
7-SEG SW01M SW03M SW04M
SW05M
0
7-SEGSW01M
7-SEGSW01M
7-SEGSW01M
ROTARY 01 ROTARY 02
0
0
ROTARY 01 ROTARY 02 7 segment
0
0
ENGLISH
Example of manual valve addressing (Zoning
setting)
(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.Display and setupSetup and Contents
1
2
3
4
5
6
7
- 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
Method of checking the pipe detection result
at HR unit
In case that an indoor unit of central control address "11" is connected
to a valve #1 of an HR unit
No.Display and setupSetup and Contents
1
2
- Operation: Turn DIP S/W No.1 on.
- Display: "11" is displayed in 7-SEG
- Operation: Turn DIP S/W No.1 off
- 7-SEG disappeared
Identification of Manual Valve ID (Address)
No.Display and setupSetup and Contents
- Operation: more than 2 DIP switches
1
turned on.
- Display: "Er" is displayed in 7-SEG
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.
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 Rotary switch for HR unit.(Rotary switch No. "0" ‘ HR unit
No. "1")
3 Set the right Rotary 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)
- 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.)
No. of Indoor unit.
No. of HR unit branch.
No. of HR unit.
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.
Page 49
49
SODU.B SODU.A IDU.B IDU.A CEN.B CEN.A DRY1 DRY2 GND12 V
B(D)A(C)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW02C (ȭ: backward)
SW04C (X : cancel)
DIP-SW01
7-Segment
SW01D (reset)
SW03C (ȯ: forward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW02C (ȭ: backward)
SW04C (X : cancel)
DIP-SW01
7-Segment
SW04D (reset)
SW03C (ȯ: forward)
Group Number setting
Group Number setting for Indoor Units
- Confirm the power of whole system(Indoor Unit, Outdoor Unit) is
OFF, otherwise turn off.
- The communication cables connected to CEN.A and CEN.B terminal
should be connected to central control of Outdoor Unit with care for
their polarity (A-A, B-B ).
- Turn the whole system on.
- Set the group and Indoor Unit number with a wired remote control.
- To control several sets of Indoor Units into a group, set the group ID
from 0 to F for this purpose.
Outdoor Units (External PCB)
Example) Group number setting
1 F
st
1
number indicate the group number
2nd number point out indoor unit number
• Valve address and central control address of its corresponding
EX)
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.
ARUM***B(D)TE5ARUM***CTE5
Group Indoor unit
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)
WARNING
!
indoor unit should be set identical in manual addressing.
Valve (04)
HR unit
Valve (03)
Valve (02)
Valve (01)
Indoor unit (04)
Indoor unit (03)
Indoor unit (02)
Indoor unit (01)
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
SLC (Smart Load Control) (Fn 14)
ENGLISH
Function for set the variable target pressure which for the high
efficiency and comport operation depend on ODU load.
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
SLC(Smart Load Control) Mode is set
SLC(Smart Load Control) Mode
SettingModeDetail of function
oFFNot SettingoP1Smooth ModeSlowly control, a target pressure value
oP2Normal ModeNormal control, a target pressure value
oP3Peak ModeFast control, a target pressure value
- 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)
Ex) 1051 : Error occurrence with error number 105 at No. 1 outdoor unit (=Master unit)
Ex) CH → 01 : Error occurrence with error number 01 (at remote controller)
Ex) 213 → C23 : It means that compressor error occurred with Error No. 21 at No. 3 Outdoor unit (=Slave 2)
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
In case of indoor unit error occurrence, the error number is only shown at remote controller
without 7 segment LED of outdoor unit.
In case of compressor error occurrence, 7 segment LED of outdoor unit control board
will display its error number alternately with compressor number.
DisplayTitleCause of Error
0 1 -Air temperature sensor of indoor unitAir temperature sensor of indoor unit is open or short
0 2 -Inlet pipe temperature sensor of indoor unitInlet pipe temperature sensor of indoor unit is open or short
0 3 -
0 4 -Drain pumpMalfunction of drain pump
0 5 -
0 6 -Outlet pipe temperature sensor of indoor unitOutlet pipe temperature sensor of indoor unit is open or short
1 5 -Hydro Kit Liquid pipe Strange overheat ErrorTemperature sensor defective or hot water inflow
16 -
17 -
18 -
2 3 0 -Error in refrigerant leakage detection
237 -
238 -
2 1 * Master Outdoor Unit Inverter Compressor IPM FaultMaster Outdoor Unit Inverter Compressor Drive IPM Fault
2 2 *
2 3 *
2 4 * Master Outdoor Unit High Pressure SwitchSystem is turned off by Master Outdoor Unit high pressure switch.
Outdoor unit related error
Hydro Kit Indoor unit Inlet and Outlet pipe
Temperature sensor Error
Hydro Kit Indoor unit Inlet pipe Temperature sensor
Error
Outside air Introduction duct Inlet pipe Temperature
sensor Error
Hydro Kit Indoor unit Outlet pipe Temperature
sensor Error
Poor communication between the outdoor unit and
the indoor unit
Poor communication between the controlling part of
the outdoor unit and the indoor unit.
Inverter PCB Input Over Current(RMS) of Master
Outdoor Unit
Master Outdoor Unit Inverter Compressor DC Link
Low or High Voltage
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Pipe temperature sensor is open or short
Occurs when a refrigerant leakage sensor is detecting refrigerant
leakage
The indoor unit could not receive the communication signal
from the outdoor unit for at least 3 consecutive minutes
The controlling part of the outdoor unit could not receive the signal
for controlling the indoor unit
Master Outdoor Unit Inverter PCB Input Current excess (RMS)
System is turned off by Master Outdoor Unit DC Link Low/High
Voltage.
Page 57
DisplayTitleCause of Error
Master Outdoor Unit input voltage is over 537 V or below 247 V
(ARUM***LTE5)
2 5 *
2 6 *
2 9 *
3 2 *
3 3 *
3 4 * High Pressure of Master Outdoor UnitHigh Pressure of Master Outdoor Unit
3 5 * Low Pressure of Master Outdoor UnitLow Pressure of Master Outdoor Unit
40*
4 1 *
4 2 * Master Outdoor Unit Low Pressure Sensor FaultMaster Outdoor Unit Low Pressure Sensor open or short
4 3 * Master Outdoor Unit High Pressure Sensor FaultMaster Outdoor Unit High Pressure Sensor open or short
4 4 * Master Outdoor Unit Air Temperature Sensor FaultMaster Outdoor Unit Air Temperature Sensor open or short
4 5 *
4 6 *
4 7 *
4 9 *
50*
Outdoor unit related error
5 1 * Excessive capacity of indoor units
52*
53*
57*
6 0 * Inverter PCB EEPROM Error of Master Outdoor UnitAccess Error of Inverter PCB of Master Outdoor Unit
62*
65*
6 7 * Master Outdoor Unit Fan LockRestriction of Master Outdoor Unit
7 1 * Inverter CT Sensor Error of Master Outdoor UnitInverter CT Sensor open or short of Master Outdoor Unit
7 5 * Master Outdoor Unit Fan CT Sensor ErrorMaster Outdoor Unit Fan CT Sensor open or short
7 7 * Master Outdoor Unit Fan Over Current ErrorMaster Outdoor Unit Fan Current is over 6A
7 9 * Master Outdoor Unit Fan Start Failure Error
8 6 * Master Outdoor Unit Main PCB EEPROM Error
8 7 * Master Outdoor Unit Fan PCB EEPROM Error
1 0 4*
1 0 5* Outdoor Unit Fan PCB Communication ErrorFailing to receive fan signal at main PCB of Outdoor unit
1 0 6* Outdoor Unit Fan IPM Fault ErrorInstant Over Current at Outdoor Unit Fan IPM
Master Outdoor Unit Input Voltage High/ Low
Voltage
Master Outdoor Unit Inverter Compressor Start
Failure
Master Outdoor Unit Inverter Compressor Over
Current
Master Outdoor Unit Inverter Compressor1 High
Discharge Temperature
Master Outdoor Unit Inverter Compressor2 High
Discharge Temperature
Master Outdoor Unit Inverter Compressor CT
Sensor Fault
Master Outdoor Unit Inverter Compressor1
Discharge Temperature Sensor Fault
Master Outdoor Unit Heat Exchanger Temperature
Sensor (Front side) Fault
Master Outdoor Unit Suction Temperature Sensor
Fault
Master Outdoor Unit Inverter Compressor2
Discharge Temperature Sensor Fault
Master Outdoor Unit Faulty IPM Temperature
Sensor
Omitting connection of R, S, T power of Master
Outdoor Unit
Communication error : inverter PCB ’ Main PCB
Communication error : indoor unit ’ Main PCB of
Outdoor Unit
Communication error : Main PCB ’ inverter PCB
Master Outdoor Unit Inverter Heatsink High
Temperature
Master Outdoor Unit Inverter Heatsink Temperature
Sensor Fault
Communication Error Between Master Outdoor
Unit and Other Outdoor Unit
Master Outdoor Unit input voltage is over 310 V or below 143 V
(ARUM***BTE5)
Master Outdoor Unit input voltage is over 598 V or below 320 V
(ARUM***DTE5)
Master Outdoor Unit input voltage is over 776 V or below 373 V
(ARUM***CTE5)
The first start failure by Master Outdoor Unit Inverter Compressor
abnormality or Compressor locked
Master Outdoor Unit Inverter Compressor Fault or some bits in
pipe.
Master Outdoor Unit Inverter Compressor1 High Discharge
Temperature
Master Outdoor Unit Inverter Compressor2 High Discharge
Temperature
Master Outdoor Unit Inverter Compressor CT Sensor open or short
Master Outdoor Unit Inverter Compressor Discharge Temperature
Sensor open or short
Master Outdoor Unit Heat Exchanger Temperature Sensor(Front
side) open or short
Master Outdoor Unit Suction Temperature Sensor open or short
Master Outdoor Unit Inverter Compressor2 Discharge Temperature
Sensor open or short
Master Outdoor Unit IPM Temperature Sensor short/open
Omitting connection of Master outdoor unit
Excessive connection of indoor units compared to capacity of
Outdoor Unit
Failing to receive inverter signal at main PCB of Master Outdoor
Unit
Failing to receive indoor unit signal at main PCB of Outdoor Unit.
Failing to receive signal main PCB at inverter PCB of Master
Outdoor Unit
System is turned off by Master Outdoor Unit Inverter Heatsink High
Temperature
Master Outdoor Unit Inverter Heatsink Temperature Sensor open
or short
The first start failure by Master Outdoor Unit Fan abnormality or
Fan locked
Communication Fail Between Master Outdoor Unit Main MICOM
and EEPROM or omitting EEPROM
Communication Fail Between Master Outdoor Unit Fan MICOM
and EEPROM or omitting EEPROM
Failing to receive Slave Unit signal at main PCB of Master
Outdoor Unit
57
ENGLISH
Page 58
58
Amount of additional
replenished refrigerant
Total amount of refrigerant
in in the system [kg (lbs)]
+
=
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 pre-charged
refrigerant per single
Amount of replenished
refrigerant at factory shipment
Amount of additionally
replenished refrigerant
depending on piping
length or piping
diameter by customer
Outdoor unit
(No.1 system)
Flow of
refrigerant
Indoor unit
Room where refrigerant leaks
(Refrigerant of the whole No.1
system flows out.)
ENGLISH
DisplayTitleCause of Error
1 0 7* Outdoor Unit Fan DC Link Low Voltage ErrorOutdoor Unit Fan DC Link Input Voltage is under 380 V
1 1 3* Outdoor Unit Liquid pipe Temperature Sensor ErrorLiquid pipe temperature sensor of Outdoor Unit is open or short
1 1 4*
115 *
1 1 6*Outdoor Unit Oil Level Sensor ErrorOil Level Sensor of Outdoor Unit is open or short
145 *
1 5 0*Outdoor Unit Discharge Superheat not satisfied
151 *
153 *
Outdoor unit related error
154 *
182 *
1 8 7*Hydro - Kit P,HEX bursting error
1 9 3*Outdoor Unit Fan Heatsink High Temperature
194 *
2 0 01Searching pipe ErrorFailure of automatic addressing of valves
201
202
203
204
205
206
HR Unit related error
207
208
Outdoor Unit Subcooling Inlet Temperature Sensor
Error
Outdoor Unit Subcooling Outlet Temperature
Sensor Error
Outdoor unit Main Board - External Board
communication Error
Outdoor Unit Subcooling Inlet Temperature Sensor Error
Outdoor Unit Subcooling Outlet Temperature Sensor Error
Outdoor unit Main Board - External Board communication Error
Outdoor Unit Compressor Discharge Superheat not satisfied
during 5 Min.
Failure of operation mode conversion at Outdoor
Unit
Outdoor Unit Heat Exchanger Temperature Sensor
(upper part) Fault
Outdoor Unit Heat Exchanger Temperature Sensor
(lower part) Fault
Outdoor unit External Board Main-Sub Micom
communication Error
Failure of operation mode conversion at Outdoor Unit
Outdoor Unit Heat Exchanger Temperature Sensor (upper part)
Fault
Outdoor Unit Heat Exchanger Temperature Sensor(lower part)
open or short
Outdoor Unit Main Board Main-Sub Micom communication failed
Inlet water temperature is below 5 degree or water temperature
error during defrosting operation.
System is turned off by Outdoor Unit Fan Heatsink High
Temperature
Outdoor Unit Fan Heatsink Temperature Sensor
Fault
#HR + h
HR unit1 Liqiud sensor errorLiquid pipe sensor of HR unit open or short
#HR + h
HR unit1 Sub Cooling Pipe sensor errorSub Cooling Pipe In sensor of HR unit open or short
#HR + h
HR unit1 Sub Cooling Pipe Out sensor errorSub Cooling Pipe Out sensor of HR unit. open or short
#HR + h
Communication errorFailing to receive HR unit signal at outdoor unit
#HR + h
Communication error between HR unit and the
upgraded 485 modem.
#HR + h
Duplicate address error of HR unit
#HR + h
Communication error between Master and Slave
Main PCB of HR Unit
#HR + h
Communication error of EEPROM of HR UnitWhen fail to communication of EEPROM of HR Unit
Outdoor Unit Fan Heatsink Temperature Sensor open or short
4 series upgraded 485 communication error between
HR unit and HR unit modem
When the HR unit address is set duplicated at the 4 series
upgraded 485 communication
When fail to communication between Master and Slave Main PCB
of HR Unit
2 4 2*Network error of cntral controllerCommunication wiring defect
Network error
h : HR unit # : HR unit number
CAUTION FOR REFRIGERANT LEAK
The installer and system specialist shall secure safety against leakage
according to local regulations or standards.
The following standards may be applicable if local regulations are not
available.
Introduction
Though the R410A refrigerant is harmless and incombustible itself ,
the room to equip the air conditioner should be large to such an extent
that the refrigerant gas will not exceed the 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/m
air volume) for facilitating calculation.
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.
Page 59
59
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)
Outdoor unit
Indoor unit
Smallest
room
Countermeasure 2
Gas leak alarm
Mechanical ventilator
Countermeasure 1
Opening effective to ventilation
Indoor unit
Sea wind
Windbreak
Sea wind
Sea wind
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
- With partition and without opening which serve as passage of air to
adjoining room
Calculate refrigerant concentration
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, it should avoid
direct exposure to the sea wind. Otherwise it needs additional
anticorrosion treatment on the heat exchanger.
Selecting the location(Outdoor Unit)
If the outdoor unit is to be installed close to the seaside, direct
exposure to the sea wind should be avoided. Install the outdoor unit on
the opposite side of the sea wind direction.
ENGLISH
Total amount of
replenishedrefrigerant in
refrigerant facility [kg(lbs)]
Volume of smallest room
whereindoor unit is installed
[m
3
(ft3)]
= Maximum concentration limit
3
[kg/m
(lbs/ft3)]
(R410A)
- 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 dividing into smaller
separate system.
In case, to install the outdoor unit on the seaside, set up a windbreak
not to be exposed to the 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.
Pay a special attention to the place, such as a basement, etc.
where refrigerant can stay, since refrigerant is heavier than air.
• Periodic (1 times per 6 months) cleaning of the dust or salt
particles stuck on the heat exchanger Is necessary by using
clean water
Page 60
60
ENGLISH
Model Designation
Product information
• Product Name : Air conditioner
• Model Name :
Product Sales NameModel Factory Name
x = N (Heat Pump), V (Cooling Only),
y = B (208/230 V)
*** = Numeric; (Cooling capacity)
ARUx***yTE5 series
M (Heat Recovery / Heat Pump)
D (460 V)
C (575 V)
• Additional information : Serial number is refer to the bar code on the
product.
Page 61
US
Please call the installing contractor of your product, as warranty service will be provided
by them.
CANADA
Service call Number # : (888) LG Canada, (888) 542-2623
Numéro pour les appels de service : LG Canada, 1-888-542-2623
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