LG | ARUV264BTE5.AWGBLAT | Installation guide | LG ARUV096BTE5.AWGBLAT Installation guide

LG ARUV096BTE5.AWGBLAT Installation guide
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 1
ENGLISH ESPAÑOL PORTUGUÊS
INSTALLATION MANUAL
AIR
CONDITIONER
Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.
Cooling Only
Original instruction
MFL67221443
Rev.00_011719
www.lg.com
Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved.
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 2
2
ENGLISH
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption
when you use the air conditioner. You can use your air conditioner
more efficiently by referring to the instructions below:
• Do not cool excessively indoors. This may be harmful for your health
and may consume more electricity.
• Block sunlight with blinds or curtains while you are operating the air
conditioner.
• Keep doors or windows closed tightly while you are operating the air
conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate
indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period
of time.
• Open windows regularly for ventilation as the indoor air quality may
deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected
in the air filter may block the air flow or weaken the cooling /
dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of
purchase or for warranty purposes. Write the model number and the
serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
IMPORTANT SAFETY
INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE
APPLIANCE.
Always comply with the following precautions to avoid dangerous
situations and ensure peak performance of your product
!
WARNING
Installation
• Have all electric work done by a licensed electrician according to
"Electric Facility Engineering Standard" and "Interior Wire
Regulations" and the instructions given in this manual and always
use a special circuit.
- If the power source capacity is inadequate or electric work is
performed improperly, electric shock or fire may result.
• Ask the dealer or an authorized technician to install the air
conditioner.
- Improper installation by the user may result in water leakage,
electric shock, or fire.
• Always ground the product.
- There is risk of fire or electric shock.
• Always intstall a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
• For re-installation of the installed product, always contact a dealer
or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
• Do not store or use flammable gas or combustibles near the air
conditioner.
- There is risk of fire or failure of product.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Prepare for strong wind or earthquake and install the unit at the
specified place.
- Improper installation may cause the unit to topple and result in
injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
• Use a vacuum pump or Inert(nitrogen) gas when doing leakage test
or air purge. Do not compress air or Oxygen and do not use
Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
• When installing and moving the air conditioner to another site, do
not charge it with a different refrigerant from the refrigerant
specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant,
the refrigerant cycle may malfunction and the unit may be
damaged.
• Do not reconstruct to change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device
is shorted and operated forcibly, or parts other than those
specified by LGE are used, fire or explosion may result.
• Ventilate before operating air conditioner when gas leaked out.
- It may cause explosion, fire, and burn.
• Securely install the cover of control box and the panel.
- If the cover and panel are not installed securely, dust or water may
enter the outdoor unit and fire or electric shock may result.
• If the air conditioner is installed in a small room, measures must be
taken to prevent the refrigerant concentration from exceeding the
safety limit when the refrigerant leaks.
- Consult the dealer regarding the appropriate measures to prevent
the safety limit from being exceeded. Should the refrigerant leak
and cause the safety limit to be exceeded, harzards due to lack of
oxygen in the room could result.
It can result in serious injury or death when the directions are ignored
!
CAUTION
It can result in minor injury or product damage when the directions are
ignored
!
WARNING
• Installation or repairs made by unqualified persons can result in
hazards to you and others.
• The information contained in the manual is intended for use by a
qualified service technician familiar with safety procedures and
equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can
result in equipment malfunction, property damage, personal injury
and/or death.
Operation
• Do not damage or use an unspecified power cord.
- There is risk of fire, electric shock, explosion, or injury.
• Use a dedicated outlet for this appliance.
- There is risk of fire or electrical shock.
• Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
• Do not touch the power switch with wet hands.
- There is risk of fire, electric shock, explosion, or injury.
• When the product is soaked (flooded or submerged), contact an
Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious not to touch the sharp edges when installing.
- It may cause injury.
• Take care to ensure that nobody could step on or fall onto the
outdoor unit.
- This could result in personal injury and product damage.
1,MFL67221443,영영 19. 1. 31. 영영 11:47 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.
• Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.
Operation
• Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the
performance of the air conditioner or damage its parts.
• Do not block the inlet or outlet.
- It may cause failure of appliance or accident.
• Make the connections securely so that the outside force of the
cable may not be applied to the terminals.
- Inadequate connection and fastening may generate heat and
cause a fire.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it, causing
property damage, product failure, or personal injury.
• Install and insulate the drain hose to ensure that water is drained
away properly based on the installation manual.
- A bad connection may cause water leakage.
• Be very careful about product transportation.
- Only one person should not carry the product if it weighs more
than 20 kg.
- Some products use PP bands for packaging. Do not use any PP
bands for a means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your
fingers.
- When transporting the outdoor unit, suspending it at the specified
positions on the unit base. Also support the outdoor unit at four
points so that it cannot slip sideways.
• Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts,
may cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that children
may not play with them. If children play with a plastic bag which
was not torn apart, they face the risk of suffocation.
• Turn on the power at least 6 hours before starting operation.
- Starting operation immediately after turning on the main power
switch can result in severe damage to internal parts. Keep the
power switch turned on during the operational season.
• Do not touch any of the refrigerant piping during and after
operation.
- It can cause a burn or frostbite.
• Do not operate the air conditioner with the panels or guards
removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not directly turn off the main power switch after stopping
operation.
- Wait at least 5 minutes before turning off the main power switch.
Otherwise it may result in water leakage or other problems.
• Auto-addressing should be done in condition of connecting the
power of all indoor and outdoour units. Auto-addressing should also
be done in case of changing the indoor unit PCB.
• Use a firm stool or ladder when cleaning or maintaining the air
conditioner.
- Be careful and avoid personal injury.
• Do not insert hands or other objects through the air inlet or outlet
while the air conditioner is plugged in.
- There are sharp and moving parts that could cause personal injury.
ENGLISH
• Do not open the inlet grille of the product during operation. (Do not
touch the electrostatic filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or product failure.
• If the supply cable is damaged, it must be replaced by a special
cable or assembly available from the manufacturer of its service
agent.
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 4
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ENGLISH
TABLE OF CONTENTS
2
2
5
5
5
6
6
TIPS FOR SAVING ENERGY
IMPORTANT SAFETY INSTRUCTIONS
INSTALLATION PROCESS
OUTDOOR UNITS INFORMATION
ALTERNATIVE REFRIGERANT R410A
SELECT THE BEST LOCATION
INSTALLATION SPACE
6
Individual Installation
7
8
LIFTING METHOD
INSTALLATION
8
8
8
10
The location of the Anchor bolts
Foundation for Installation
Preparation of Piping
Plumbing materials and storage methods
11 REFRIGERANT PIPING INSTALLATION
11
11
11
Precautions on Pipe connection / Valve operation
Connection of Outdoor units
Caution
12 PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
12
13
13
14
16
18
18
18
19
20
Preparation Work
Pipe Drawing Out during Single / Series connection
Refrigerant piping system
Pipe Connection Method between outdoor unit/indoor unit
Branch pipe Fitting
Distribution Method
Vacuum Mode
Leak Test and Vacuum drying
Refrigerant charging
Thermal insulation of refrigerant piping
21 ELECTRICAL WIRING
21
23
23
24
24
29
30
30
31
31
32
32
32
32
33
33
33
34
34
34
34
35
35
36
Caution
Control box and connecting position of wiring
Communication and Power Cables
Wiring of main power supply and equipment capacity
Field Wiring
Checking the setting of outdoor units
Automatic Addressing
The Procedure of Automatic Addressing
High Static Pressure Compensation mode
Night Low Noise Function
Setting the ODU address
Target pressure adjusting
Low Ambient Kit
High Efficiency Mode (Cooling Operation)
Auto Dust Removal Mode
Compressor Max. Frequency Limit
ODU Fan Max. RPM Limit
SLC (Smart Load Control)
Humidity Reference
Central Control Connection at Indoor Unit side
Compressor Input Current Limit
Power Consumption Display on wired remote controller
Comfort Cooling operation
Self-Diagnosis Function
39 CAUTION FOR REFRIGERANT LEAK
39
39
Introduction
Checking procedure of limiting concentration
40 INSTALLATION GUIDE AT THE SEASIDE
40
40
Model Designation
Airborne Noise Emission
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 5
5
Determination of division work
Preparation of contract drawings
Sleeve and insert work
Indicate clearly who will be responsible for switch setting.
Make connection clearly between outdoor, indoor,
remote controller and option.
Take account of gradient
of drain piping
OUTDOOR UNITS INFORMATION
!
Combination Ratio(50~200%)
Outdoor Number
Single outdoor units
Double outdoor units
Triple outdoor units
Over the triple unit
Outdoor unit foundation work
The foundation must be level even
Installation of indoor unit
Check model name to
make sure the fitting
is made correctly
Special attention to dryness,
cleanness and tightness
Drain pipe work
Adjust to downward gradient
Duct work
Make sure airflow is sufficient
Heat insulation work
Electrical work
(connection circuits and drive circuits)
Airtight test
Vacuum drying
Multiple core cable must not be used.
(suitable cable should be selected)
In the final check for 24 hours at 3.8 MPa (38.7 kgf/cm2)[551.1 psi]
there must be no drop in pressure.
The vacuum pump used must have a capacity of reaching at least
5 torr, more than 1 hour
Recharge correctly as calculated in this manual. and record the
amount of added refrigerant
Fit facing panels
Make sure there are no gaps left between the facing materials
used on the ceiling
Test run adjustment
Transfer to customer with explanation
!
Notes : * We can guarantee the operation only within 130 %
combination. If you want to connect more than 130 %
combination, please contact us and discuss the
requirement like below.
• If the operation of indoor unit is more than 130%, the airflow
will be operated as low in the all indoor units.
Make sure no gaps are left where
the insulating materials are joined
Additional charge of refrigerant
Automatic addressing of indoor unit
Connection Ratio
200 %
160 %
130 %
130 %
Installation of outdoor unit
Avoid short circuits and ensure
sufficient space is allowed for service
Refrigerant piping work
CAUTION
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.
Refer to automatic addressing flowchart
Preheat the crank case with the electrical heater for more than 6 hours.
Run each indoor unit in turn to make sure the pipe work
has been fitted correctly
Explain the use of the system as clearly as possible to your customer and
make sure all relevant documentation is in order
CAUTION
• The above list indicates the order in which the individual work
operations are normally carried out but this order may be varied
where local conditions warrants such change.
• The thickness of the piping should comply with the relevant
local and national regulations for the designed pressure 3.8 MPa
(551.1 psi).
• Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state.(If the refrigerant
is charged in its gaseous state, its composition changes and the
system will not work properly.)
!
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.
ENGLISH
INSTALLATION PROCESS
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 6
6
INSTALLATION SPACE
Select space for installing outdoor unit, which will meet the following
conditions:
Individual Installation
• No direct thermal radiation from other heat sources
During the installation of the unit, consider service, inlet, and outlet
acquire the minimum space as shown in the figures below.
Side space should be more than 49 mm for operating of Auto Dust
Removal mode.
• No possibility of annoying neighbors due to noise of unit
• No exposition to strong wind
• With strength which bears weight of unit
Category
• Because of the possibility of fire, do not install unit to the space
where generation, inflow, stagnation, and leakage of combustible gas
is expected.
E
D
F
• Avoid unit installation in a place where acidic solution and spray
(sulfur) are often used.
G
• Do not use unit under any special environment where oil, steam and
sulfuric gas exist.
Front
E
D
• It is recommended to fence round the outdoor unit in order to
prevent any person or animal from accessing the outdoor unit.
H
H
F
Front
G
E
4 sides
are
walls
D
• 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.)
H
F
I
Front
Front
G
Front
Front
E
D
H
I
F
Front
Front
G
E
F
I
G
Front
E
Front
D
Rear
to
Rear
Front
H
F
I
G
Front
E
Front
D
Front
Front
H
Front
H
F
I
G
Front
Front
E
Front
No limit for the
height of wall
D
Only 2
sides
are
walls
A≥10 (13/32)
B≥300 (11-13/16)
C≥10 (13/32)
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)
A≥10 (13/32)
B≥300 (11-13/16)
C≥10 (13/32)
D≥500 (19-11/16)
E≥20 (25/32)
A≥50 (1-31/32)
B≥100 (3-15/16)
C≥50 (1-31/32)
D≥500 (19-11/16)
E≥100 (3-15/16)
A≥10 (13/32)
B≥300 (11-13/16)
C≥10 (13/32)
D≥500 (19-11/16)
E≥20 (25/32)
F≥600 (23-5/8)
A≥50 (1-31/32)
B≥100 (3-15/16)
C≥50 (1-31/32)
D≥500 (19-11/16)
E≥100 (3-15/16)
F≥500 (19-11/16)
A≥10 (13/32)
B≥300 (11-13/16)
C≥10 (13/32)
D≥300 (11-13/16)
E≥20 (25/32)
F≥500 (19-11/16)
A≥50 (1-31/32)
B≥100 (3-15/16)
C≥50 (1-31/32)
D≥100 (3-15/16)
E≥100 (3-15/16)
F≥500 (19-11/16)
A≥10 (13/32)
B≥500 (19-11/16)
C≥10 (13/32)
D≥500 (19-11/16)
F≥900 (35-7/16)
A≥50 (1-31/32)
B≥500 (19-11/16)
C≥50 (1-31/32)
D≥500 (19-11/16)
F≥600 (23-5/8)
A≥10 (13/32)
B≥500 (19-11/16)
C≥10 (13/32)
D≥500 (19-11/16)
E≥20 (25/32)
F≥1200 (47-1/4)
A≥50 (1-31/32)
B≥500 (19-11/16)
C≥50 (1-31/32)
D≥500 (19-11/16)
E≥100 (3-15/16)
F≥900 (35-7/16)
A≥10 (13/32)
B≥500 (19-11/16)
C≥10 (13/32)
D≥500 (19-11/16)
E≥20 (25/32)
F≥1800 (70-7/8)
A≥50 (1-31/32)
B≥500 (19-11/16)
C≥50 (1-31/32)
D≥500 (19-11/16)
E≥100 (3-15/16)
F≥1200 (47-1/4)
Front
D
A≥10 (13/32)
B≥300 (11-13/16)
Front
E
D
No limit for the height of wall
H
H
A≥10 (13/32)
B≥300 (11-13/16)
E≥20 (25/32)
Front
500
(19-11/16’’)
• 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.
Case 1
Case 2
(10 mm(13/32 inch)≤Side
(Side Space
Space≤49 mm(13/14 inch)) ≥49 mm(13/14 inch))
Installation Space
h1
A
Limitati
ons on
the
height
of the
wall
(Refer
to 4
side
walls)
h2
B
Front
side
45° or
more
500 500500500500
500500
50
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
(19-11/16’’)
• Note that drain flows out of unit when heating
1 500 (59)
ENGLISH
SELECT THE BEST LOCATION
Inlet
side
240
(9-1/2’’)
or more
50 (2) or more
• The height of the wall on the front side must
be 1 500 mm (59 inch) or less.
• The height of the wall on the inlet side must
be 500 mm (19-11/16’’) or less.
• There is no limit to the wall on 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) - 1500 (59 inch)
- h2 = B(Actual height) - 500 (19-11/16’’)
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 7
7
LIFTING METHOD
• When carrying the suspended, unit pass the ropes under the unit and
use the two suspension points each at the front and rear.
• Always lift the unit with ropes attached at four points so that impact
is not applied to the unit.
• Attach the ropes to the unit at an angle of 40° or less.
Locking points for
transportation ropes
- 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.
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.
ENGLISH
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.
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 8
8
Outdoor units
should not be
supported only by
the corner supports.
Ⓐ 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
!
Center of the Unit
mm
00
ast 1 h)
At le /16 inc
5
(3-1
mm
00
ast 1 inch)
m
e
l
t
0m
A /16
t 10
5
(3-1 At leas 6 inch)
1
5/
(3-1
Center of the Unit
75(2.95)
200(7.87)
mm
00
ast 1 inch)
e
l
t
A /16
5
(3-1
mm
00
ast 1 inch)
e
l
t
mm
A /16
00
5
ast 1 inch)
(3-1
e
l
t
A /16
5
(3-1
200(7.87)
Unit : mm (inch)
100(3.94)
75(2.95)
• Install at places where it can endure the weight and vibration/noise
of the outdoor unit.
• The outdoor unit support blocks at the bottom shall have width of at
least 100 mm (3-15/16 inch) under the Unit’s legs before being fixed.
• The outdoor unit support blocks should have minimum height of
200 mm (7-7/8 inch).
• Anchor bolts must be inserted at least 75 mm (2-15/16 inch).
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.
The location of the Anchor bolts
760 (29-29/32)
731 (28-25/32)
At least
At least
65 (2-9/16) 65 (2-9/16)
65
(2-9/16)
Unit : mm (inch)
65
(2-9/16)
ENGLISH
INSTALLATION
Chassis
A [mm (inch)]
B [mm (inch)]
UXA
UXB
930 (36-5/8)
1 240 (47-1/4)
748 (29-9/20)
1 040 (40-15/16)
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)).
!
CAUTION
• Be sure to remove the Pallet(Wood Support) of the bottom side
of the outdoor unit Base panel before fixing the bolt. It may
cause the unstable state of the outdoor settlement, and may
cause freezing of the heat exchanger resulting in abnormal
operations.
• Be sure to remove the Pallet(Wood Support) of the bottom side
of the outdoor unit before welding. Not removing Pallet(Wood
Support) causes hazard of fire during welding.
Pallet(Wood Support)
- Remove before Installation
Preparation of Piping
Main cause of gas leakage is defect in flaring work. Carry out correct
flaring work in the following procedure.
Cut the pipes and the cable
- Use the accessory piping kit or the pipes purchased locally.
- Measure the distance between the indoor and the outdoor unit.
- Cut the pipes a little longer than measured distance.
- Cut the cable 1.5 m (4.92 ft) longer than the pipe length.
Pipe
Copper
tube
Reamer
90°
Slanted Uneven Rough
Point down
At least
200 (7.87)
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 9
9
Opening shutoff valve
1 Remove the cap and turn the valve counter clockwise with the
hexagon wrench.
2 Turn it until the shaft stops.
Bar
"A"
Do not apply excessive force to the shutoff valve. Doing so may
break the valve body, as the valve is not a backseat type. Always
use the special tool.
Copper pipe
3 Make sure to tighten the cap securely.
<Clutch type>
<Wing nut type>
Closing shutoff valve
1 Remove the cap and turn the valve clockwise with the hexagon
wrench.
Flaring work
- Firmly hold copper pipe in a bar with the dimension shown in below
table table below.
- Carry out flaring work with the flaring tool.
Pipe(mm(inch))
‘A’(mm(inch)) / Wing nut type
‘A’(mm(inch)) / Clutch type
Indoor unit
[kW(Btu/h)]
Gas
Liquid
Gas
Liquid
Gas
Liquid
<5.6(19 100) Ø 12.7 (1/2) Ø 6.35 (1/4) 0.06~0.07(1.6~1.8) 0.04~0.05(1.1~1.3)
0~0.02
<16.0(54 600) Ø 15.88 (5/8) Ø 9.52 (3/8) 0.06~0.07(1.6~1.8) 0.06~0.07(1.5~1.7)
(0~0.5)
<22.4(76 400) Ø 19.05 (3/4) Ø 9.52 (3/8) 0.07~0.08(1.9~2.1) 0.06~0.07(1.5~1.7)
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.
2 Securely tighten the valve until the shaft contacts the main body seal.
3 Make sure to tighten the cap securely.
* For the tightening torque, refer to the table on the below.
Tightening torque
Shut
off
valve
size
(mm
(inch))
Tightening torque N.m (lbs.ft) (Turn clockwise to close)
Shaft
(valve body)
Closed
Ø 6.35
(1/4)
6.0±0.6
Ø 9.52 (4.4±0.4)
(3/8)
Smooth all round
Inside is shining without scratches.
Inclined Surface Cracked Uneven
damaged
thickness
- 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)]
Tightening Torque
N.m (lbs.ft)
A [mm (inch)]
Flare shape
Ø 9.52 (3/8)
38±4 (28±3.0)
12.8 (0.5)~13.2 (0.52)
90° ±2
A
Ø 15.88 (5/8)
75±7 (55±5.2)
19.3 (0.76)~19.7(0.78)
45
°
±2
R=0.4~0.8
!
5.0±0.0
(3.7±0.4)
Ø 22.2
(7/8) 30.0±3.0
Ø 25.4 (22.1±2.2)
(1)
Precautions when connecting pipes
16.2 (0.64)~16.6 (0.65)
16±2
(12±1.5)
17.6±2.0
(13.0±1.5)
38±4
(28±3.0)
20.0±2.0
(14.8±1.5)
Ø 19.05 14.0±1.4
(3/4) (10.3±1.0)
Flare shape and flare nut tightening torque
55±6 (41±4.4)
Gas line
piping
Flare nut attached
to unit
55±6
(41±4.4)
-
Ø 15.88 12.0±1.2
(5/8) (8.9±0.9)
Ø 12.7 (1/2)
4 mm
(0.16 inch)
Ø 12.7 10.0±1.0
(1/2) (7.4±0.7)
= Improper flaring =
Even length
all round
Opened
Cap
Service
port
Hexagonal (Valve lid)
wrench
CAUTION
• Always use a charge hose for service port connection.
• After tightening the cap, check that no refrigerant leaks are present.
• When loosening a flare nut, always use two wrenches in
combination, When connecting the piping,
always use a spanner and torque wrench
in combination to tighten the flare nut.
Union
• When connecting a flare nut, coat the
flare(inner and outer faces) with oil for
R410A(PVE) and hand tighten the nut
3 to 4 turns as the initial tightening.
12.7±2
(9.4±1.5)
5 mm
(0.24 inch)
25.0±2.5
(18.4±1.8)
75±7
(55±5.1)
110±10
(81.1±7.4)
8 mm
(0.31 inch)
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
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.
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 10
10
Nitrogen substitution method
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.
Welding, as when heating without nitrogen substitution a large
amount of the oxide film is formed on the internal piping.
The oxide film is a caused by clogging EEV, Capillary, oil hole of
accumulator and suction hole of oil pump in compressor.
It prevents normal operation of the compressor.
In order to avoid this problem, Welding should be done after replacing
air by nitrogen gas.
When welding plumbing pipe, the work is required.
Regulator
Welding Point
Refrigerant piping on three principles
Items
Drying
Cleanliness
Airtight
Should be no moisture
inside
No dust inside.
There is no refrigerant
leakage
Moisture
Dust
Nitrogen gas
Pressure 0.02 MPa
(2.9 psi) less
Oxide scale
Note) should not block the outlet side.
When the internal pressure in pipe is abo
ve the atmospheric pressure, pinhole is
occurred and it is a leakage cause.
Taping
(Should not
contain air)
Auxiliary valve
Nitrogen
ENGLISH
Plumbing materials and storage methods
Leakage
- Significant
hydrolysis of
refrigerant oil
- Degradation of
refrigerant oil
Cause - Poor insula’tion of
failure the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- Degradation of
refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- Clogging of EEV,
Capillary
- Gas shortages
- Degradation of
refrigerant oil
- Poor insulation of
the compressor
- Do not cold and
warm
- No moisture in the pipe
- Until the
connection is
completed, the
plumbing pipe
entrance should be
strictly controlled.
- Stop plumbing at
rainy day.
Counter - Pipe entrance
measure 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.
- No dust in the pipe.
- Until the
connection is
completed, the
plumbing pipe
entrance should be
strictly controlled.
- Pipe entrance
should be taken
side or bottom.
- When removal burr
after cutting pipe,
pipe entrance
should be taken
down.
- Pipe entrance
should be fitted cap
when pass through
the walls.
- Airtightness test
should be.
- Brazing operations
to comply with
standards.
- Flare to comply
with standards.
- Flange connections
to comply with
standards.
!
CAUTION
• Always use the nitrogen.(not use oxygen, carbon dioxide, and a
Chevron gas): Please use the following nitrogen pressure 0.02 MPa
(2.9 psi) Oxygen - Promotes oxidative degradation of refrigerant oil.
Because it is flammable, it is strictly prohibited to use Carbon
dioxide - Degrade the drying characteristics of gas Chevron Gas Toxic gas occurs when exposed to direct flame.
• Always use a pressure reducing valve.
• Please do not use commercially available antioxidant.
The residual material seems to be the oxide scale is observed. In
fact, due to the organic acids generated by oxidation of the
alcohol contained in the anti-oxidants, ants nest corrosion occurs.
(causes of organic acid → alcohol + copper + water +
temperature)
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 11
11
Outdoor units
Model
Liquid Pipe
Gas Pipe
I.D. 19.05
O.D.15.88
I.D.22.2 O.D. 28.58 I.D.34.9
331
314
I.D.15.88
C
C
2 Unit
I.D.28.58
I.D.12.7 I.D.9.52
I.D.19.05
ARCNN21
416
408
I.D.15.88
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.
I.D.12.7
C
I.D.28.58
I.D.9.52
130
O.D.15.88
C
I.D.41.3 I.D.38.1 O.D.34.9
I.D.15.88
O.D.12.7
70
I.D.22.2 O.D.28.58
I.D. 19.05
O.D.34.9 I.D.28.58
O.D.19.05
I.D.15.88
111
I.D.22.2
I.D.31.8 I.D.34.9
I.D.22.2 O.D.19.05
Precautions on Pipe connection / Valve operation
I.D.28.58
83
I.D.12.7
O.D.19.05
I.D.41.3
I.D.34.9
O.D.34.9
I.D.22.2
125
334
281
341
298
C
ARCNN31
3 Unit
I.D.19.05
I.D.22.2 I.D.19.05
83
I.D.34.9
I.D.41.3
I.D.15.88 I.D.12.7
C
- Use hexagonal wrench to open/close the valve.
111
I.D.28.58
I.D.53.98 I.D. 44.5 O.D.41.3
I.D.28.58 O.D.22.2
O.D.15.88
O.D.19.05 I.D.22.2
Service Port
I.D.19.05
I.D.22.2 O.D.28.58
I.D.28.58
O.D.41.3 I.D.44.5
334
281
A
4 Unit
ARCNN41
I.D.34.9
I.D.53.98
415
375
I.D.19.05
I.D.22.2 I.D.19.05
83
I.D.41.3
I.D.44.48 I.D.53.98
134
C
I.D.15.88 I.D.12.7
I.D.31.8 I.D.28.58 O.D.22.2
I.D.28.58
O.D.15.88
I.D.22.2 O.D.28.58 I.D.34.9
I.D.19.05
For more information, refer accessory installation manual.
Liquid pipe
Y branch
Within +/- 10
A
B
Gas pipe
Viewed from point A
in direction of arrow
A To outdoor unit
B To branch piping or indoor unit
Facing
downwards
!
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.
!
Facing
upwards
CAUTION
!
CAUTION
Y-branches between the outside units must be installed
horizontally.
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
1 Use the following materials for refrigerant piping.
- Material: Seamless phosphorous deoxidized copper pipe
- Wall thickness : Comply with the relevant local and national
regulations for the designed pressure 3.8 MPa
(551 psi). We recommend the following table as
the minimum wall thickness.
Outer diameter 6.35 9.52 12.7 15.88 19.05 22.2 25.4 28.58 31.8 34.9 38.1 41.3 44.45 53.98
[mm(inch)] (1/4) (3/8) (1/2) (5/8) (3/4) (7/8) (1) (1-1/8) (1-1/4) (1-3/8) (1-1/2) (1-5/8) (1-3/4) (2-1/8)
When installing ODU series, refer below picture.
Minimum thickness 0.8 0.8 0.8 0.99 0.99 0.99 0.99 0.99 1.1 1.21 1.35 1.43 1.55 2.1
[mm(inch)] (0.03) (0.03) (0.03) (0.04) (0.04) (0.04) (0.04) (0.04) (0.04) (0.05) (0.05) (0.06) (0.06) (0.08)
A
(Master)
B
(Slave1)
C
(Slave2)
D
(Slave3)
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.
A≥B≥C≥D
① IDU side connection pipe
② ODU to ODU connection pipe (1st branch)
③ ODU to ODU connection pipe (2st branch)
④ ODU to ODU connection pipe (3rd brach)
Header
Y branch
4 branches 7 branches 10 branches
ARBLB01621, ARBLB03321,
ARBLB07121, ARBLB14521,
ARBLB23220
ARBL054
ARBL057
ARBL1010
ARBL104
ARBL107
ARBL2010
ENGLISH
2, 3, 4 Outdoor Units
REFRIGERANT PIPING
INSTALLATION
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 12
12
ENGLISH
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 .)
PIPE CONNECTIONS BETWEEN
INDOOR AND OUTDOOR UNIT
- Pipe connections can be done on the front side or on the side
according to the installation environments.
- Be sure to let 0.2 kgf/cm2 (2.8 psi) Nitrogen flow in the pipe when
welding.
- If Nitrogen was not flown during welding, many oxidized membranes
may form inside the pipe and disturb the normal operations of valves
and condensers.
A
Right
Side Pipe
Draw Out
Regulator
Refrigerant Pipe
Nitrogen
Direction
Taping
Left Side
Pipe Draw
Out
A To Outdoor Unit
B Sealed Piping
Valve
Nitrogen
Front Pipe Draw Out
Preparation Work
A
B
- Use Knock Outs of Base Pan of the outdoor unit for Left/Right or
Bottom pipe drawing outs.
Knock Out for
gas pipe
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.
!
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.
Knock Out for
Liquid pipe
Removal area for pipes
bottom side connections.
Knock Out for
communication cable
!
Knock Out for
power supply cable
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.
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 13
13
Refrigerant piping system
1 Outdoor Units
Y branch method
Indoor
Unit
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
L 150 m [492 ft] (200 m [656 ft])
H 110 m [361 ft]
Service Port
ENGLISH
Remove leakage prevention cap
• Remove the leakage prevention cap attached to the outdoor unit
service valve before pipe work.
• Proceed the leakage prevention cap removal as follows:
- Verify whether all the pipes are locked.
- Extract remaining refrigerant or air inside using the service port.
- Remove the leakage prevention cap
l 40 m [131 ft] (90m [295 ft])
h 40 m [131 ft]
Liquid pipe
h * : See Table 4
Leakage
Prevention Cap
L 150 m [492 ft] (200 m [656 ft])
h 40 m(131 ft)
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Header
Ⓕ : Sealed piping
H 110 m [361 ft]
Combination of Y
branch/header Method
Gas pipe
l 40 m [131 ft] (90m [295 ft])
h * : See Table 4
Gas pipe
Liquid pipe
Header Method
Ⓐ : Outdoor Unit
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Ⓔ : Header
L 200 m [656 ft]
H 110 m [361 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.
l 40 m [131 ft]
D
h 40 m [131 ft]
Series Outdoor Units (2 Units ~ 4 Units)
Y branch method
Gas pipe
Remove Knock Out for the pipes
Indoor
Unit
G
F
E
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft])
C
C
C
C
h 40 m (131 ft)
C
h * : See Table 4
Combination of Y branch/
header Method
Ⓐ : Outdoor Unit
Ⓑ : 1st branch(Y branch)
Ⓒ : Y branch
Ⓓ : Indoor Unit
Ⓔ : Connection branch pipe
between Outdoor
units : ARCNN41
Ⓕ : Connection branch pipe
between Outdoor
units : ARCNN31
Ⓖ : Connection branch pipe
between Outdoor
units : ARCNN21
Ⓗ : Header
Ⓘ : Sealed piping
C
C
Master
10 m or
less
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave 3
Slave3
Slave2
Slave1
Master
10 m or
less
G
F
E
H 110 m [361 ft]
Gas pipe
Slave2
Slave1
H 110 m [361 ft]
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Ⓔ : Connection branch
pipe between Outdoor
units: ARCNN41
Ⓕ : Connection branch
pipe between Outdoor
units : ARCNN31
Ⓖ : Connection branch
pipe between Outdoor
units : ARCNN21
Method of drawing out pipes on the bottom side
- Drawing out common pipe through side panel
Liquid pipe
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave 3
Slave3
h * : See Table 4
H
I
L 150 m [492 ft] (200 m [656 ft])
l 40 m [131 ft] (90m [295 ft]
h 40 m (131 ft)
Liquid pipe
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 14
14
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
Master
10 m or
less
G
F
E
L 200 m [656 ft]
B
l 40 m [131 ft]
D
C
C
C
C
(Table 2) Refrigerant pipe diameter from outdoor unit to first branch. (A)
C
h 40 m (131 ft)
C
Pipe Connection Method between outdoor
unit/indoor unit
Pipe diameter when pipe Pipe diameter when pipe Pipe diameter when height
ODU length is < 90 m (295 ft) length is ≥ 90 m (295 ft) differential (ODU↔IDU) is > 50 m
(Standard)
(164 ft)
capacity
(hp)
Liquid Pipe
Gas Pipe
Liquid Pipe
Gas Pipe
Liquid Pipe
Gas Pipe
mm (inch)
mm (inch)
mm (inch)
mm (inch)
mm (inch)
mm (inch)
Slave1
Master
Slave2
H1
L3
F
Indoor
Unit
G
L1
1st branch
l 40 m (131 ft) Refrigerant pipe diameter from outdoor unit to first branch
8
Ø 9.52 (3/8) Ø 19.05 (3/4) Ø 12.7 (1/2) Ø 22.2 (7/8) Ø 12.7 (1/2) Not increased
10
Ø 9.52 (3/8) Ø 22.2 (7/8) Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 12.7 (1/2) Not increased
12~16
Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 15.88 (5/8) Ø 34.9 (1-3/8) Ø 15.88 (5/8) Not increased
18~22
Ø 15.88 (5/8) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Ø 34.9 (1-3/8) Ø 19.05 (3/4) Not increased
Slave3
L2
E
WARNING
!
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave 3
Slave3
Slave2
Slave1
H 110 m [361 ft]
24
Ø 15.88 (5/8) Ø 34.9 (1-3/8) Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 19.05 (3/4) Not increased
26~34
Ø 19.05 (3/4) Ø 34.9 (1-3/8) Ø 22.2 (7/8) Ø 41.3 (1-5/8) Ø 22.2 (7/8) Not increased
36~60
Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 22.2 (7/8) Ø 44.5 (1-3/4) Ø 22.2 (7/8) Not increased
62~64
Ø 22.2 (7/8) Ø 44.5 (1-3/4) Ø 25.4 (1) Ø 53.98 (2-1/8) Ø 25.4 (1) Not increased
66~96
Ø 22.2 (7/8) Ø 53.98 (2-1/8) Ø 25.4 (1) Ø 53.98 (2-1/8) Ø 25.4 (1) Not increased
(Table 3) Refrigerant pipe diameter from first branch to last branch (B,C,D)
h 40 m (131 ft)
Downward indoor unit
total capacity [kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19 100)
< 16.0 (54 600)
≤ 22.4 (76 400)
< 33.6 (114 700)
< 50.4 (172 000)
< 67.2 (229 400)
< 72.8(248 500)
< 100.8(344 000)
< 173.6(592 500)
< 184.8(630 700)
≤ 224.0(764 400)
Ø 6.35(1/4)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 22.2(7/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
Ø 28.58(1-1/8)
Ø 28.58(1-1/8)
Ø 34.9(1-3/8)
Ø 34.9(1-3/8)
Ø 41.3(1-5/8)
Ø 44.5(1-3/4)
Ø 53.98(2-1/8)
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)
!
WARNING
• Branch pipe can not be used after header.
• It is recommended that difference in length of the pipes
connected to the indoor units (a~f) is minimized. Performance
difference between indoor units may occur.
Level Difference
(Outdoor unit ↔ Outdoor unit)
Max length from first branch to
each outdoor unit (L1, L2, L3)
• To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
5 m [16.4 ft]
Less than 10 m [32.8 ft]
(equivalent length of piping 13 m
[42.7 ft])
(Table 1) Limit Pipe length
Combination of Y Header
branch/header
Method
Method
A+B+C+D+e ≤ 150 m A+B+b ≤ 150 m [492 ft]
[492 ft]
A+C+e ≤ 150 m [492 ft] A+f ≤ 200 m
(200 m [656 ft] :
(200 m [656 ft] :
[656 ft]
Conditional application)* Conditional application)*
175 m [574 ft]
175 m [574 ft]
225 m
(225 m [738 ft] :
(225 m [738 ft] :
Conditional application)* Conditional application)* [738 ft]
1000 m
1000 m [3281 ft]
1000 m [3281 ft]
[3281 ft]
Y branch
Method
Longest
pipe
length(L)
Max pipe
length
Outdoor Unit
↔
Equivalent
Indoor Unit pipe length
Total pipe
length
Outdoor Unit Difference in
Max
↔ Indoor Unit height(H)
difference
Indoor Unit Difference in
in height
↔ Indoor Unit height(h)
Longest pipe
length after
1st branch
h * : See Table 4
(Table 4) Conditional Application
110 m [361 ft]
110 m [361 ft]
110 m [361 ft]
40 m [131 ft]
40 m [131 ft]
40 m [131 ft]
40 m [131 ft]
40 m [131 ft]
Pipe
(90 m [295 ft] :
(90 m [295 ft] :
40 m [131 ft]
length(ℓ) Conditional application)* Conditional application)*
Condition
Diameter of pipes
between first branch and
the last branch should be
1 increased by one step,
except pipe diameter
B,C,D is same as
Diameter A
2
While calculating whole
refrigerant pipe length, pipe
B,C,D length should be
calculated twice.
Example
40 m [131 ft] <
B+C+D+e
90 m [295 ft] ’ B, C, D
Change a diameter
A+Bx2+Cx2+Dx2
+a+b+c+d+e ≤
1 000 m [3 281 ft]
Indoor
Unit
Length of pipe from each
a,b,c,d,e ≤ 40 m
3 indoor unit to the closest
[131 ft]
branch
Length of pipe from
outdoor unit to the
farthest indoor unit 5
4 (A+B+C+D+e)] - [Length
of pipe outdoor unit to the
closest indoor unit 1
(A+a)] ≤ 40 m [131 ft]
Ø 6.35(1/4) ’ Ø 9.52(3/8), Ø 9.52(3/8) ’
Ø 12.7(1/2), Ø 12.7(1/2) ’ Ø 15.88(5/8),
Ø 15.88(5/8) ’ Ø 19.05(3/4), Ø 19.05(3/4) ’
Ø22.2(7/8), Ø 22.2(7/8) ’ Ø 25.4(1),
Ø 25.4(1) ’ Ø 28.58(1-1/8), Ø 28.58(1-1/8) ’
Ø 31.8(1-1/4), Ø 31.8(1-1/4) ’ Ø 34.9(1-3/8),
Ø 34.9(1-3/8) ’ Ø3 8.1(1-1/2)
(A+B+C+D+e)(A+a) ≤ 40 m
[131 ft]
L
H 110 m [361 ft]
ENGLISH
Header Method
Ⓐ : Outdoor Unit
Ⓑ : Header
Ⓒ : Indoor Units
Ⓓ : Sealed piping
Ⓔ : Connection branch pipe
between Outdoor
units : ARCNN41
Ⓕ : Connection branch pipe
between Outdoor
units : ARCNN31
Ⓖ : Connection branch pipe
between Outdoor
units : ARCNN21
l
h 40 m [131 ft]
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 15
15
WARNING
Pipes between outdoor units
are 2 m [6.6 ft] or longer
• In case of pipe diameter B connected after first branch is bigger
than the main pipe diameter A, B should be of the same size
with A.
Ex) In case indoor unit combination ratio 120 % is connected to
24 HP(67.2 kW) outdoor unit.
1) Outdoor unit main pipe diameter A : Ø 34.9(1-3/8)(Gas
pipe), Ø 15.88(5/8)(liquid pipe)
2) Pipe diameter B after first branch according to 120 %
indoor unit combination(80.6 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.
Indoor Unit Connection
Oil Trap
0.2 m [0.66 ft]
2 m [6.6 ft] or less
2 m [6.6 ft] or longer
Oil Trap
2 m [6.6 ft] or less
Oil Trap
2 m [6.6 ft] or less
2 m [6.6 ft] or longer
2 m [6.6 ft] or longer
- If the distance between the outdoor units becomes more than 2 m
[6.6 ft], apply Oil Traps between the gas pipes.
- If the outdoor unit is located lower than the main pipe, apply Oil Trap.
Examples of Wrong Pipe Connections
Indoor Unit connecting pipe from branch (a,b,c,d,e,f)
Indoor Unit capacity
[kW(Btu/h)]
≤ 5.6(19 100)
< 16.0(54 600)
< 22.4(76 400)
< 28.0(95 900)
!
Liquid pipe
[mm(inch)]
Gas pipe [mm(inch)]
Ø 6.35(1/4)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 9.52(3/8)
Ø 12.7(1/2)
Ø 15.88(5/8)
Ø 19.05(3/4)
Ø 22.2(7/8)
If the main pipe is
higher than the
outdoor units, oil is
accumulated in the
outdoor unit.
CAUTION
• Bending radius should be
at least twice the diameter
of the pipe.
• Bend pipe after 500 mm
[19.7 inch] or more from
branch(or header).
Do not bend U type.
It may affect performance
or result in noise. If U type
bending is required, the R
should be more than 200
mm [7.9 inch]
Oil Trap
If there are differences in the height
between the outdoor units, oil is
accumulated in the lower outdoor unit.
500 mm [19.7 inch]
or more
500 mm [19.7 inch]
or more
(Example 1)
R
Toward indoor unit
Toward indoor unit
(Example 2)
Pipe Connection Method/Precautions for
Series connections between Outdoor units
Toward indoor unit
Pipe inclination (2° or more)
Toward indoor unit
(Example 3)
- Separate Y branch joints are needed for series connections between
outdoor units.
- Please refer to the below connection examples to install pipe
connections between outdoor units.
Toward indoor unit
Toward indoor unit
Pipe connection between outdoor
units (General Case)
The maximum pipe
length after the first
branching between the
outdoor units is 10 m
[32.8 ft] or less
- 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)
Pipes between outdoor units
are 2 m [6.6 ft] or less
Toward indoor unit
2 m [6.6 ft] or less
≤ 2m
ENGLISH
!
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 16
16
≥ 0.2 m [0.66 ft]
Y branch
Oil Trap
B
A
Toward indoor unit
Ⓐ To Outdoor Unit
Ⓑ To Branch Piping or Indoor Unit
≤ 2 m [6.6 ft]
≥ 2 m [6.6 ft]
!
CAUTION
Y-branches between the outside units must be installed
horizontally.
- 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.
Horizontal
plane
Facing
downwards
(Example 1)
Facing
upwards
Within +/- 10°
A
Viewed from point A
in direction of arrow
Toward indoor unit
Toward indoor unit
• 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.
(Example 2)
Tape
(field supply)
h
Liquid and gas
pipe joints
Insulator
(included with kit)
Insulator for
field piping
Toward indoor unit
Header
(Example 3)
A
B
Oil Trap
h
Toward indoor unit
h
Toward indoor unit
≥ 0.2 m [0.66 ft]
ENGLISH
Branch pipe Fitting
(Example 2)
C
Ⓐ To Outdoor Unit
Ⓑ To Indoor Unit
• The indoor unit having larger
capacity must be installed closer
to Ⓐ than smaller one.
• If the diameter of the refrigerant
piping selected by the
procedures described is
different from the size of the
joint, the connecting section
should be cut with a pipe cutter.
ⓒ Pipe cutter
• 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.
Horizontal plane
View from point B in the direction of the arrow
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 17
17
Header
[Unit:mm(inch)]
Models
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
Gas pipe
Liquid pipe
360
360(14-5/32)
120
ID9.52(3/8)
ID12.7
ID9.52(3/8)
ID6.35(1/4)
ID12.7
4 branch
ARBL054
ID15.88
120
ID15.88
150
120(4-23/32)
ID6.35(1/4)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID15.88
ID19.05
ID12.7(1/2)
150
120
(5-29/32)
(4-23/32)
ID9.52(3/8)
540(21-1/4)
540
120
120(4-23/32)
ID12.7
7 branch
ARBL057
ID15.88
ID15.88
ID9.52(3/8)
150
120
ID15.88
ID19.05
• Joints between branch and pipe should be sealed with the tape
included in each kit.
ID6.35(1/4)
ID12.7
ID15.88(5/8)
ID12.7(1/2)
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
4 branch ID12.7(1/2)
ID15.88(5/8)
ID15.88(5/8)
ID15.88(5/8)
ID15.88(5/8)
ARBL104
400
360(14-5/32)
160
ID9.52(3/8)
ID6.35(1/4)
ID19.05
ID12.7(1/2)
150
120
ID15.88
ID15.88
ID19.05
120
ID28.58 ID25.4
150
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID12.7(1/2)
160
ID6.35(1/4)
ID19.05
ID15.88
120
150
Gas pipe
Liquid pipe
I.D.9.52(3/8)
I.D.6.35(1/4)
I.D.12.7(1/2)
I.D.15.88(5/8)
ID25.4
ID9.52
ID9.52
ID9.52
ID9.52
(3/8)
(3/8)
(3/8)
(3/8)
ID22.2
I.D.15.88(5/8)
I.D.12.7(1/2)
I.D.6.35(1/4)
I.D.9.52(3/8)
74
(2-29/32)
I.D.12.7(1/2)
I.D.19.05(3/4)
1
O.D.15.88(5/8)
O.D.9.52(3/8)
70(2-3/4)
70(2-3/4)
I.D.22.2(7/8)
I.D.25.4(1)
I.D.19.05(3/4)
I.D.15.88(5/8)
I.D.12.7(1/2)
2
I.D.19.05(3/4)
1
ARBLN03321
390(15-11/32)
413(16-1/4)
I.D.12.7(1/2)
I.D.9.52(3/8) I.D.6.35(1/4)
I.D.6.35(1/4)
I.D.9.52(3/8)
83
I.D.19.05(3/4) I.D.12.7
(1/2) (3-9/32)
I.D.15.88(5/8)
80(3-5/32)
70(2-3/4)
321(12-5/8)
332(13-1/16)
110(4-11/32)
I.D.19.05(3/4)
I.D.22.2(7/8) I.D.15.88(5/8)
I.D.28.58(1-1/8)
96
I.D.15.88(5/8) I.D.12.7
I.D.19.05(3/4)
(1/2) (3-25/32)
376(14-13/16)
404(15-29/32)
ARBLN07121
I.D.28.58(1-1/8)
3
I.D.9.52(3/8)
90(3-17/32)
I.D.9.52(3/8)
O.D.12.7(1/2)
I.D.6.35(1/4)
O.D.12.7(1/2)
3
2
70(2-3/4)
110(4-11/32)
120(4-23/32)
I.D.34.9(1-3/8)
I.D.34.9(1-3/8)
I.D.41.3(1-5/8)
I.D.38.1(1-1/2)
I.D.28.58(1-1/8)
2
I.D.28.58(1-1/8)
I.D.34.9(1-3/8) I.D.22.2(7/8)
I.D.38.1(1-1/2)
471(18-17/32)
517(20-11/32)
125
(4-29/32)
I.D.12.7(1/2)
3
I.D.19.05(3/4)
I.D.22.2(7/8) I.D.15.88(5/8)
2
I.D.15.88(5/8) I.D.12.7 96
(1/2)
I.D.19.05(3/4)
(3-25/32)
I.D.22.2(7/8)
3
416(16-3/8)
444(17-15/32)
I.D.9.52(3/8)
I.D.12.7(1/2)
O.D.19.05(3/4)
O.D.15.88(5/8) I.D.9.52(3/8)
I.D.22.2(7/8) O.D.12.7(1/2) I.D.6.35(1/4)
2
O.D.28.58(1-1/8) I.D.22.2(7/8)
I.D.19.05(3/4)
2
3
3
80(3-5/32)
110(4-11/32)
110(4-11/32)
120(4-23/32)
70(2-3/4)
I.D.44.48(1-3/4)
I.D.41.3(1-5/8)
I.D.38.1(1-1/2)
I.D.53.98(2-1/4)
1
I.D.44.48(1-3/4)
I.D.41.3(1-5/8)
2
I.D.44.48(1-3/4)
I.D.38.1(1-1/2) 134
420(16-17/32)
490(19-9/32)
I.D.34.9(1-3/8)
I.D.15.88(5/8)
I.D.19.05(3/4)
1
3
I.D.19.05(3/4)
I.D.41.3(1-5/8)
I.D.38.1(1-1/2)
O.D.22.2(7/8) I.D.15.88(5/8)
O.D.38.1(1-1/2)
O.D.34.9(1-3/8)
3
2
I.D.41.3
3
(1-5/8)
90(3-17/32)
120(4-23/32)
130(5-1/8)
I.D.53.98(2-1/4)
I.D.28.58(1-1/8) O.D.44.48(1-3/4)
I.D.25.4(1)
I.D.22.2(7/8)
I.D.19.05(3/4)
I.D.25.4(1) I.D.22.2(7/8)
2
I.D.25.4(1)
I.D.22.2(7/8) I.D.19.05(3/4) 96(3-25/32)
3
I.D.31.8(1-1/4)
O.D.38.1(1-1/2)
2 3
83
(3-9/32)
3
371(14-19/32)
394(15-1/2)
I.D.34.9(1-3/8)
120(4-23/32)
I.D.15.88(5/8) I.D.12.7(1/2)
I.D.19.05(3/4)
I.D.19.05(3/4)
I.D.22.2(7/8)
O.D.19.05(3/4)
O.D.22.2(7/8) I.D.31.8(1-1/4) O.D.31.8(1-1/4)
I.D.28.58(1-1/8)
2
1
3
ARBLN23220
I.D.19.05(3/4)
I.D.15.88(5/8) I.D.12.7(1/2)
2
I.D.15.88(5/8)
I.D.12.7(1/2)
2
1
I.D.31.8(1-1/4)
346(13-5/8)
379(14-29/32)
I.D.25.4(1)
I.D.22.2(7/8)
3
O.D.28.58(1-1/8)
X2
175(6-7/8)
3
O.D.15.88(5/8)
I.D.6.35(1/4)
I.D.6.35(1/4)
I.D.6.35(1/4)
I.D.6.35(1/4)
I.D.12.7(1/2)
74 I.D.6.35(1/4)
I.D.6.35(1/4)
I.D.9.52(3/8) I.D.6.35(1/4)
I.D.6.35(1/4) (2-29/32) I.D.6.35(1/4)
I.D.12.7(1/2)
3
I.D.22.2(7/8)
I.D.22.2(7/8) I.D.28.58(1-1/8)
O.D.19.05(3/4)
O.D.25.4(1) O.D.19.05(3/4)
I.D.25.4(1)
3
1 2
O.D.15.88(5/8)
74
(2-29/32)
281(11-1/16)
292(11-1/2)
281(11-1/16)
292(11-1/2)
1
ARBLN14521
I.D.6.35(1/4)
I.D.9.52(3/8)
X2
2 3
I.D.12.7(1/2)
3
115(4-17/32)
100(4-11/32)
I.D.19.05(3/4)
3
70(2-3/4)
O.D.22.2(7/8)
I.D.15.88(5/8)
I.D.15.88(5/8)
O.D.19.05(3/4)
O.D.12.7(1/2)
X2
2 3
110(4-11/32)
120(4-23/32)
I.D.9.52(3/8)
O.D.12.7(1/2)
I.D.6.35(1/4)
3
110(4-11/32)
ID9.52(3/8)
ID9.52(3/8)
ID12.7(1/2)
700(27-9/16)
ID19.05
ID15.88
ID34.9
107(4-7/32)
60*9=540(21-1/2)
ID15.88
ID12.7
ID31.8
1
1
150
120
(5-29/32)
(4-23/32)
(3/8)
182
[Unit:mm(inch)]
ID9.52(3/8)
ID6.35(1/4)
ID9.52
(3/8)
ID9.52
775
10 branch
ARBL2010
150
120
(5-29/32)
(4-23/32)
120(4-23/32)
ID15.88
ID12.7
ID28.58
ARBLN01621
ID6.35(1/4)
ID9.52(3/8)
ID22.2
Tape
I.D.12.7(1/2)
I.D.15.88(5/8)
120(4-23/32)
720(28-11/32)
Insulator for cap pipe
Models
700(27-9/16)
ID6.35(1/4)
ID9.52(3/8)
760
10 branch
ARBL1010
ID9.52(3/8)
ID9.52(3/8)
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID6.35(1/4)
ID12.7
• Any cap pipe should be insulated using the insulator provided with
each kit and then taped as described above.
150
120
(4-23/32) (5-29/32)
ID12.7(1/2)
ID6.35(1/4)
160
ID12.7(1/2)
ID15.88(5/8)
ID12.7(1/2)
7 branch
ID12.7(1/2)
ID12.7(1/2)
ID15.88(5/8) ID15.88
ID15.88(5/8)
ID15.88(5/8)
ID15.88(5/8)
ARBL107
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
ID9.52(3/8)
580
ID12.7(1/2)
ID15.88(5/8)
ID6.35(1/4)
ID22.2
ID28.58 ID25.4
Insulator of field pipe
120(4-23/32)
ID9.52(3/8)
ID15.88
ID12.7
Insulator
Y branch pipe
ID9.52(3/8)
ID12.7(1/2)
ID12.7(1/2)
ID12.7(1/2)
Tape
Cap pipe
150
120
(5-29/32)
(4-23/32)
ID6.35(1/4)
ID6.35
(1/4)
ID6.35
120
150
120
(4-23/32) (5-29/32)
150 (1/4)
ID9.52
ID28.58
(3/8)
ID9.52
ID6.35
ID6.35
ID6.35
ID6.35
(3/8)
(1/4)
(1/4)
(1/4)
(1/4)
ID9.52
ID9.52
ID9.52
ID9.52
(3/8)
(3/8)
(3/8)
(3/8)
ID9.52(3/8)
ID19.05(3/4)
ID15.88(5/8)
ENGLISH
• Header should be insulated with the insulator in each kit.
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 18
18
Vacuum Mode
Horizontal Distribution
This function is used for creating vacuum in the system after
compressor replacement, ODU parts replacement or IDU
addition/replacement.
Slave
Master
Vacuum mode setting method
DIP-SW01
Slave 3rd main pipe distribution
Master
2nd
1st
Slave
Master
1st
1st
2nd
2nd
7-Segment
SW04C (X : cancel)
SW03C (ȯ: forward)
SW02C (ȭ: backward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW01D (reset)
3rd
3rd
1st
Main pipe
Distribution
Master unit PCB DIP switch on : No.5
3rd
Main pipe
Distribution
Select the mode using ‘▶’, ‘◀’ Button :
“SVC” Push the ‘●’ button
Vertical Distribution
- Ensure that the branch pipes are attached vertically.
Select the Function using ‘▶’, ‘◀’ Button :
“Se3” Push the ‘●’ button
Slave
Master
Start the vacuum mode : “VACC”
ODU Valve open
ODU EEV open
IDU EEV open
SC EEV open
Vacuum mode off method
DIP switch off and push the reset button on Master unit PCB
!
Slave
Master
CAUTION
ODU operation stops during vacuum mode. Compressor can't
operate.
Leak Test and Vacuum drying
The others
Leak test
Leak test should be made by pressurizing nitrogen gas to 3.8 MPa(38.7
kgf/cm2). If the pressure does not drop for 24 hours, the system
passes the test. If the pressure drops, check where the nitrogen leaks.
For the test method, refer to the following figure. (Make a test with
the service valves closed. Be also sure to pressurize liquid pipe, gas
pipe and high pressure gas pipe)
The test result can be judged good if the pressure has not be reduced
after leaving for about one day after completion of nitrogen gas
pressurization.
Slave
Master
Slave 1 outdoor unit
Master outdoor unit
Slave
Master
When inserting nitrogen
gas of high pressure, it
must be used with
regulator.
Close
Gas pipe
Close
Close
Liquide pipe
Header
Close
Gas pipe
Nitrogen gas
cylinder
Liquide pipe
ENGLISH
Distribution Method
Liquid side
Indoor unit
Gas side
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 19
19
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.
!
If the ambient temperature differs between the time when pressure is
applied and when the pressure drop is checked, apply the following
correction factor
There is a pressure change of approximately 0.01 Mpa(1.5 psi) for each
33.8 °F (1 °C) of temperature difference.
Correction= (Temp. at the time of pressurization – Temp. at the time of
check) X 0.1
For example: Temperature at the time of pressurization
3.8 MPa(551psi) 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.
!
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
WARNING
NOTE
Always add an appropriate amount of refrigerant. (For the refrigerant
additional charge)
Too much or too little refrigerant will cause trouble.
To use the Vacuum Mode (If the Vacuum mode is set, all valves of Indoor
units and Outdoor units will be opened.)
!
WARNING
When installing and moving the air conditioner to another site,
recharge after perfect evacuation.
- If a different refrigerant or air is mixed with the original
refrigerant, the refrigerant cycle may malfunction and the unit
may be damaged.
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 Drying
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.
Slave 1 outdoor unit
Vacuum
pump
Refrigerant charging
Heat Pump System Installation
Ⓐ Manifold Gauge
Ⓑ Low Pressure Side Handle
Ⓒ High Pressure Side Handle
Liquid pipe
Gas pipe
Master outdoor unit
Close
Close
Gas pipe
Liquide pipe
Gas pipe
Liquide pipe
Scale
Use a graviometer. (One that
can measure down to 0.1 kg).
If you are unable to prepare
such a high-precision gravimeter
you may use a charge cylinder.
!
Close
Close
Liquid side
Indoor unit
Gas side
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.
ENGLISH
!
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 20
20
ENGLISH
Thermal insulation of refrigerant piping
The amount of Refrigerant
The calculation of the additional charge should take into account the
length of pipe and CF(correction Factor) value of indoor unit.
Additional charge(kg) = Total liquid pipe : Ø 25.4 mm (1.0 inch) × 0.480 kg/m (0.323 lbs/ft)
+ Total liquid pipe : Ø 22.2 mm (7/8 inch) × 0.354 kg/m (0.238 lbs/ft)
Be sure to give insulation work to refrigerant piping by covering liquid
pipe and gas pipe separately with enough thickness heat-resistant
polyethylene, so that no gap is observed in the joint between indoor
unit and insulating material, and insulating materials themselves. When
insulation work is insufficient, there is a possibility of condensation
drip, etc. Pay special attention to insulation work to ceiling plenum.
Heat insulation
Adhesive + Heat - resistant
material
polyethylene foam + Adhesive tape
Indoor
Vinyl tape
Floor
Water-proof
hemp cloth +
Outer
exposed
Bronze asphalt
covering
hemp cloth +
Outdoor Water-proof
Zinc plate + Oily paint
+ Total liquid pipe : Ø 19.05 mm (3/4 inch) × 0.266 kg/m (0.179 lbs/ft)
+ Total liquid pipe : Ø 15.88 mm (5/8 inch) × 0.173 kg/m (0.116 lbs/ft)
+ Total liquid pipe : Ø 12.7 mm (1/2 inch) × 0.118 kg/m (0.079 lbs/ft)
+ Total liquid pipe : Ø 9.52 mm (3/8 inch) × 0.061 kg/m (0.041 lbs/ft)
+ Total liquid pipe : Ø 6.35 mm (1/4 inch) × 0.022 kg/m (0.015 lbs/ft)
CF value of indoor unit
Amount refrigerant of Indoor units
Example) 4 Way Ceiling Cassette 14.5 kW -1ea, Ceiling concealed
Duct 7.3 kW-2 ea,
Wall Mounted 2.3 kW-4 ea
CF = [0.64 kg (1.411 lbs)×1 EA] + [0.26 kg (0.573 lbs)×2
EA] + [0.26 kg (0.529 lbs)×4 EA]
= 2.12 kg (4.67 lbs)
Ⓐ Heat insulation material
Ⓑ Pipe
Ⓒ Outer covering(Wind the connection part and cutting part of heat
insulation material with a finishing tape.)
!
NOTE
When using polyethylene cover as covering material, asphalt
roofing shall not be required.
Bad example
• Do not insulate gas or low pressure pipe and liquid or
highpressure pipe together.
Attach the additional refrigerant table of IDU.
B
F
A
C
D
E
Ⓐ Liquid pipe
Ⓑ Gas pipe
ⓒ Power lines
ⓓ Finishing tape
ⓔ Insulating material
ⓕ Communication lines
• Be sure to fully insulate connecting portion.
A
!
WARNING
Ⓐ These parts are not insulated.
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following
equation for human safety.
Total amount of refrigerant in the system
Volume of the room at which Indoor Unit of
the least capacity is installed
Good example
C
≤0.44 kg/m3
(0.028 lbs/ft3)
If the above equation can not be satisfied, then follow the
following steps.
• Selection of air conditioning system: select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: installation position should be over 2 m (6.6 ft) from the floor (Wall
mounted type ’ Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation
system
• Limitation in piping work
: Prepare for earthquake and thermal stress
Power lines
D
Communication lines
D
A
B
E
Separation
Ⓐ Liquid pipe
Ⓑ Gas pipe
ⓒ Power lines
ⓓ Insulating material
ⓔ Communication lines
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 21
21
ELECTRICAL WIRING
Inner wall (concealed)
Outer wall
C
A
Outer wall (exposed)
Caution
D
A
B
E
B
B
- Follow ordinance of your governmental organization for technical
standard related to electrical equipment, wiring regulations and
guidance of each electric power company.
I
Floor (fireproofing)
Penetrating portion on fire
limit and boundary wall
D
Roof pipe shaft
!
I
F
J
G
D
B
G
H
A
B
F
1m
(3.28 ft)
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.
1m
(3.28 ft)
Ⓐ Sleeve
Ⓑ Heat insulating material
Ⓒ Lagging
Ⓓ Caulking material
Ⓔ Band
Ⓕ Waterproofing layer
Ⓖ Sleeve with edge
Ⓗ Lagging material
Ⓘ Mortar or other incombustible caulking
Ⓙ Incombustible heat insulation material
When filling a gap with mortar, cover the penetration part with steel plate so
that the insulation material will not be caved in. For this part, use
incombustible materials for both insulation and covering. (Vinyl covering
should not be used.)
- 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 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
1 Unit
Master
2 Unit 3 Unit 4 Unit
Slave 1 Slave 2 Slave 3
Indoor
Unit
Indoor
Unit
Remote
control
Master
Remote
control
Slave 1 Slave 2 Slave 3
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
ENGLISH
Penetrations
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 22
22
ENGLISH
Master Slave 1 Slave 2
Master Slave
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
control
Indoor
Unit
Remote
control
Remote
control
Remote
control
Master Slave 1 Slave 2
Master Slave
Indoor
Unit
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Remote
control
!
Master Slave 1 Slave 2
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Master Slave 1 Slave 2
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Indoor
Unit
Remote
control
CAUTION
• Use the 2-core shielded wires for communication cables. Never use
them together with power cables.
• The conductive shielding layer of cable should be grounded to the
metal part of both units.
• Never use multi-core cable
• As this unit is equipped with an inverter, to install a phase leading
capacitor not only will deteriorate power factor improvement effect,
but also may cause capacitor abnormal heating. Therefore, never
install a phase leading capacitor.
• Make sure that the power unbalance ratio is not greater than 2 %.
If it is greater the units lifespan will be reduced.
Multi-Core Cable
Precautions when laying power wiring
Master Slave 1 Slave 2 Slave 3
Indoor
Unit
Indoor
Unit
Use round pressure terminals for connections to the power terminal
block.
Round pressure terminal
Remote
control
Power cable
Remote
control
Master Slave 1 Slave 2 Slave 3
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
When none are available, follow the instructions below.
- Do not connect wiring of different thicknesses to the power terminal
block. (Slack in the power wiring may cause abnormal heat.)
- When connecting cable which is the same thickness, do as shown in
the figure below.
Master Slave
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
Master Slave
Indoor
Unit
Indoor
Unit
Remote
control
Remote
control
- For wiring, use the designated power cable and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
block.
- Use an appropriate screwdriver for tightening the terinal screws. A
screwdriver with a small head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break them.
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 23
23
Communication and Power Cables
- Remove all of the screws at front panel and remove the panel by
pulling it forward.
- Connect communication cable between main and sub outdoor unit
through the terminal block.
- Connect communication cables between outdoor unit and indoor
units through the terminal block.
- When the central control system is connected to the outdoor unit, a
dedicated PCB must be connected between them.
- When connecting communication cable between outdoor unit and
indoor units with shielded cable, connect the shield ground to the
earth screw.
Communication cable
- Types : shielded wires or unshielded wires
- Cross section : 1.0 ~ 1.5 mm2 (1.55 × 10-3 ~ 2.32 × 10-3 in2)
- Maximum allowable temperature: 60 °C (140 °F)
- Maximum allowable cable length: under 1 000 m (3 281 ft)
Remote control cable
- Types : 3-core cables
Central control cable
Product type
Cable type
Diameter
ACP&AC Manager
2-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
AC Smart
2-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
Simple central controller
4-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
AC Ez
4-core wires (shielded)
1.0 ~ 1.5 mm2
(1.55 × 10-3 ~
2.32 × 10-3 in2)
Front Panel
!
!
WARNING
The temperature sensor for outdoor air should not be exposed to
direct sunlight.
- Provide an appropriate cover to intercept direct sunlight.
UXA
UXB
Main Board
External Board
Main power line
terminal block
(Take care of the phase
sequence of 3-phases
3-wires power system)
CAUTION
In case of using the shielded wires, it should be grounded.
Separation of communication and power cables
- If communication and power cables are installed alongside each other
then there is a strong likelihood of operational faults developing due
to interference in the signal wiring caused by electrostatic and
electromagnetic coupling.
The tables below indicates our recommendation as to appropriate
spacing of communication and power cables where these are to be
run side by side
Current capacity of power cable
10 A
50 A
100V or more
100 A
Exceed 100 A
!
Spacing
300 mm (11-13/16 inch)
500 mm (19-11/16 inch)
1 000 mm (39-3/8 inch)
1 500 mm (59-1/16 inch)
NOTE
• The figures are based on assumed length of parallel cabling up
to 100 m [328 ft]. For length in excess of 100 m [328 ft] the
figures will have to be recalculated in direct proportion to the
additional length of cable involved.
• If the power supply waveform continues to exhibit some
distortion the recommended spacing in the table should be
increased.
- If the cable are laid inside conduits then the following point
must also be taken into account when grouping various cable
together for introduction into the conduits
- Power cable(including power supply to air conditioner) and
communication cables must not be laid inside the same
- In the same way, when grouping the power wires and
communication cables should not be bunched together.
!
CAUTION
If apparatus is not properly earthed then there is always a risk of
electric shock, the grounding of the apparatus must be carried out
by a qualified person.
ENGLISH
Control box and connecting position of wiring
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 24
24
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.
Field Wiring
220-240V
Example Connection of Communication Cable
1 Outdoor Unit-3 Ø, 220-240 V
Power supply
3 Phase 3 Wires
50 Hz 220-240 V
60 Hz 220 V
[Outdoor Unit]
(Main Switch)
R(L1) S(L2) T(L3)
Switch
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
ELCB
L(L1) N(L2)
Power Line
(3 Wires Cable)
ELCB
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
The thickness of Minimum wire (mm2 [ inch2])
Leakage
circuit breaker
Main power
Branch wire Ground wire (4P ELCB)
wire
2.5~16
[3.875 × 10-3
~2.48 × 10-2]
-
2 Unit
16~50
[2.48 × 10-2
~7.75 × 10-2]
-
3 Unit
50~95
[7.75 × 10-2
~1.4725 × 10-1]
4 Unit
95~120
[1.4725 × 10-1
~1.86 × 10-1]
1 Unit
2.5~4
[3.875 × 10-3
~6.2 × 10-3]
Below 20~60 A
100 mA 0.1 sec
4~10
[6.2 × 10-3
~1.55 × 10-2]
Below 75~150 A
100 mA 0.1 sec
-
10
[1.55 × 10-2]
Below 150~200 A
100 mA 0.1 sec
-
10~16
[1.55 × 10-2
~2.48 × 10-2]
Below 200~250 A
100 mA 0.1 sec
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.
!
Pull box
(Installer option)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
Ground wire
1 The power wire Between the master outdoor unit and slave1
outdoor unit - minimum : 6 mm2 [9.3 × 10-3 inch2]
2 The power wire Between the slave1 outdoor unit and slave2
outdoor unit - minimum : 4 mm2 [6.2 × 10-3 inch2]
3 The power wire Between the slave2 outdoor unit and slave3
outdoor unit - minimum : 2.5 mm2 [3.875 × 10-3 inch2]
h The above standard is CV wire standard.
h Please use the 3-phases 4-wires quadrupole Leakage circuit breaker
of circuit breaker.
!
Pull box
(Installer option)
CAUTION
• Some installation site may require attachment of an earth leakage
breaker. If no earth leakage breaker is installed, it may cause an
electric shock.
• Do not use anything other than breaker and fuse with correct
capacity. Using fuse and wire or copper wire with too large capacity
may cause a malfunction of unit or fire.
!
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.
Between Indoor and Master Outdoor unit
SODU. B SODU. A
A
B
IDU. B
IDU. A
CEN. B
CEN. A
3(A) 4(B)
DRY1
DRY2
GND
3(A) 4(B)
12V
Master
Outdoor Unit
3(A) 4(B)
3(A) 4(B)
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 25
25
Between Indoor and Master Outdoor unit
SODU. B SODU. A
Power supply
3 Phase 3 Wires
50 Hz 220-240 V
60 Hz 220 V
[Master]
(Main Switch)
ENGLISH
2 Outdoor Units-3 Ø, 220-240 V
When the power source is connected In series between the units.
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
Master
Outdoor Unit
12V
[Slave]
[Sla
A
R S T
B
3(A) 4(B)
3(A) 4(B)
3(A) 4(B)
3(A) 4(B)
Switch
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
ELCB
L(L1) N(L2)
Power Line
(3 Wires Cable)
ELCB
Power Line
(2 Wires Cable)
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Master
Outdoor Unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Slave
Outdoor Unit
Communication
nication L
Line
es Cable
(2 Wires
Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power
er Line
2 Wires
Wir Cable)
Ca
(2
Power Line
(2 Wires Cable)
Powe
Power Line
(2 Wires C
Cable)
Com
Communication
Line
(3 Wires Cable)
[Indoor Units]
When the power source is supplied to Each outdoor unit individually.
Power supply
3 Phase 3 Wires
50 Hz 220-240 V
60 Hz 220 V
[Master]
(Main Switch)
R(L1) S(L2) T(L3)
Switch
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
3 Outdoor Units-3 Ø, 220-240 V
When the power source is connected In series between the units.
[Slave]
R(L1) S(L2) T(L3)
Switch
ELCB
Power supply
3 Phase 3 Wires
50 Hz 220-240 V
60 Hz 220 V
ELCB
L(L1) N(L2)
ELCB
• 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)
[Master]
(Main Switch)
Power Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
[Slave2]
Switch
Communication Line
(2 Wires Cable)
Pull box
(Installer option)
[Slave1]
[Slav
R(L1) S(L2) T(L3)
Pull box
(Installer option)
Pull box
(Installer option)
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
ELCB
L(L1) N(L2)
Power Line
(3 Wires Cable)
ELCB
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option))
Pull Box
(Installer option)
Communication Line
(3 Wires Cable)
[Indoor Units]
Power Line
(2 Wires Cable)
!
Power Line
Po
(2 Wire
Wires Cable)
Power Lin
Line
ne
2 Wires Cable)
Ca
(2
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
Communic
Communication Line
(3 Wires
W
Cable)
[Indoor Units]
When the power source is supplied to Each outdoor unit individually.
Power supply
3 Phase 3 Wires
50 Hz 220-240 V
60 Hz 220 V
[Master]
(Main Switch)
R(L1) S(L2) T(L3)
Switch
!
Power Line
(2 Wires Cable)
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.
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
R(L1) S(L2) T(L3)
Switch
ELCB
ELCB
[Slave1]
[Slave2]
R(L1) S(L2) T(L3)
Switch
ELCB
L(L1) N(L2)
ELCB
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 26
26
ENGLISH
!
460V
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
!
Between Indoor and Master Outdoor unit
A
IDU. A
B
SODU. B SODU. A
SODU. B SODU. A
CEN. B
CEN. A
DRY1
3(A) 4(B)
IDU. B
IDU. B
IDU. A
IDU. A
CEN. B
CEN. B
DRY2
GND
12V
Master
Outdoor Unit
3(A) 4(B)
CEN. A
CEN. A
R(L1) S(L2) T(L3)
Switch
IDU. B
IDU. A
CEN. B
CEN. A
ELCB
DRY1
DRY1
DRY2
DRY2
3(A) 4(B)
GND
GND
12V
3(A) 4(B)
Master
Outdoor Unit
12V
Slave1
Outdoor Unit
12V
Slave2
Outdoor Unit
DRY1
DRY2
GND
Power Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
ELCB
Communication Line
(2 Wires Cable)
Pull box
(Installer option)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
!
[Indoor Units]
WARNING
• Indoor unit ground lines are required for preventing electrical shock
accident during current leakage, Communication disorder by noise
effect and motor current leakage (without connection to pipe).
• Don't install an individual switch or electrical outlet to disconnect
each of indoor unit separately from the power supply.
• Install the main switch that can interrupt all the power sources in an
integrated manner because this system consists of the equipment
utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase,
momentary blackout or the power goes on and off while the
product is operating, attach a reversed phase protection circuit
locally.
Running the product in reversed phase may break the compressor
and other parts.
Between Indoor and Master Outdoor unit
SODU. B SODU. A
A
SODU. B SODU. A
[Outdoor Unit]
(Main Switch)
L(L1) N(L2)
• 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.
IDU. B
Power supply
3 Phase 3 Wires
60 Hz 460 V
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
WARNING
SODU. B SODU. A
Example Connection of Communication Cable
1 Outdoor Unit-3 Ø, 460 V
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
3(A) 4(B)
B
DRY2
GND
12V
3(A) 4(B)
Master
Outdoor Unit
3(A) 4(B)
3(A) 4(B)
2 Outdoor Units-3 Ø, 460 V
• 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)
When the power source is connected In series between the units.
Power supply
3 Phase 3 Wires
60Hz 460V
[Master]
(Main Switch)
[Slave]
R(L1) S(L2) T(L3)
Switch
Power supply
1 Phase
50Hz 220-240V
60Hz 220V
ELCB
L(L1) N(L2)
ELCB
Power Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
[Indoor Units]
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 27
27
When the power source is connected In series between the units.
Power supply
3 Phase 3 Wires
60Hz 460V
[Master]
(Main Switch)
R(L1) S(L2) T(L3)
[Slave]
Power supply
3 Phase 3 Wires
60 Hz 460 V
R(L1) S(L2) T(L3)
Switch
Power supply
1 Phase
50Hz 220-240V
60Hz 220V
Switch
ELCB
[Master]
(Main Switch)
ELCB
[Slave1]
[Slave2]
R(L1) S(L2) T(L3)
Switch
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
L(L1) N(L2)
ELCB
3 Outdoor Units-3 Ø, 460 V
Power Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
L(L1) N(L2)
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
Power Line
(2 Wires Cable)
ELCB
Pull box
(Installer option)
Pull box
(Installer option)
ELCB
Pull box
(Installer option)
Communication Line
(2 Wires Cable)
Pull Box
(Installer option)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Pull Box
(Installer option)
Pull Box
(Installer option)
Pull Box
(Installer option)
Power Line
(2 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)
[Indoor Units]
!
Communication Line
(3 Wires Cable)
NOTE
[Indoor Units]
- 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
When the power source is supplied to Each outdoor unit individually.
Power supply
3 Phase 3 Wires
60 Hz 460 V
[Master]
(Main Switch)
R(L1) S(L2) T(L3)
Switch
Power supply
1 Phase
50 Hz 220-240 V
60 Hz 220 V
R(L1) S(L2) T(L3)
Switch
ELCB
[Slave1]
[Slave2]
R(L1) S(L2) T(L3)
Switch
ELCB
ELCB
L(L1) N(L2)
!
WARNING
ELCB
Between Indoor and Master Outdoor unit
A
IDU. B
IDU. A
B
CEN. B
CEN. A
DRY1
3(A) 4(B)
Communication Line
(2 Wires Cable)
Power Line
(3 Wires Cable)
• 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.
SODU. B SODU. A
Power Line
(2 Wires Cable)
DRY2
GND
12V
Master
Outdoor Unit
3(A) 4(B)
3(A) 4(B)
Pull box
(Installer option)
Power Line
(2 Wires Cable)
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Master
Outdoor Unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Slave
Outdoor Unit
Power Line
(2 Wires Cable)
Power Line
(2 Wires Cable)
Communication Line
(3 Wires Cable)
!
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
3(A) 4(B)
• 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)
Power Line
(2 Wires Cable)
Pull box
(Installer option)
[Indoor Units]
!
SODU. B SODU. A
Pull box
(Installer option)
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.
ENGLISH
When the power source is supplied to Each outdoor unit individually.
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 28
28
ENGLISH
Between Indoor and Master Outdoor unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Front Side
Main power
terminal block
Master
Outdoor Unit
Ground wire
A
3(A) 4(B)
B
3(A) 4(B)
3(A) 4(B)
3(A) 4(B)
When connecting
Communication wires
/ Ground wire from
front guide panel
Gap : Over
50 mm(1.97’’)
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Master
Outdoor Unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Slave1
Outdoor Unit
SODU. B SODU. A
IDU. B
IDU. A
CEN. B
CEN. A
DRY1
DRY2
GND
12V
Slave2
Outdoor Unit
Fix firmly with cable tie or
clamp cord not to be displaced
When connecting
Main power lines
/ Ground wire from
front guide panel
Communication/Ground
wire connection
Main power line
connection
Ground wire
ODU-IDU
Communication
cable
ODU-ODU
Communication
cable
Main power
terminal block
Insulation sleeves
attachments
• 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)
Ground wire
!
Example) Connection of communication cable
CAUTION
It should be wiring power cables or communication cables to avoid
interference with the oil level sensor. Otherwise, That oil level sensor
would be operated abnormally.
[BUS type]
[STAR type]
- Connection of communication
cable must be installed like
below figure between indoor
unit to outdoor unit.
- Abnormal operation can be
caused by communication
defect, when connection of
communication cable is installed
like below figure(STAR type).
Example) Connection of power and communication cable (UXB)
Bottom Side
Main power
terminal block
Ground wire
Example) Connection of power and communication cable (UXA)
When connecting
Main power lines
/ Ground wire from left side
Gap : Over
50 mm(1.97’’)
Bottom Side
Main power
terminal block
When connecting
Communication wires
/ Ground wire from left side
Ground wire
When connecting
Main power lines
/ Ground wire from left side
Gap : Over
50 mm(1.97’’)
Front Side
Main power
terminal block
When connecting
Communication wires
/ Ground wire from left side
When connecting
Communication wires
/ Ground wire from
front guide panel
Ground wire
Fix firmly with cable tie
or clamp cord not to be
displaced
Gap : Over
50 mm(1.97’’)
When connecting
Main power lines
/ Ground wire from
front guide panel
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 29
29
Communication/Ground
wire connection
Ground wire
Main power
terminal block
Insulation sleeves
attachments
ODU-IDU
Communication
cable
DIP Switch
ODU-ODU
Communication
cable
7 segment
Reset button
Ground wire
!
Quick control Setting
In the factory setting, main PCB DIP switch setting is all “OFF”.
- Check and make sure that all the indoor unit model name are
ARNU******4.
- Change the main PCB DIP switch No. 3 “OFF → ON” like below
picture.
- Push the reset button.
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.
• Initial display order
Checking the setting of outdoor units
Checking according to DIP switch setting
- You can check the setting values of the Master outdoor unit from the
7 segment LED.
The DIP switch setting should be changed when the power is OFF.
Checking the initial display
The number is sequentially appeared at the 7 segment in 5 seconds
after applying the power. This number represents the setting condition.
[Main Board]
Order
①
②
③
④
⑤
⑥
⑦
⑧
DIP switch
7 segment
SW01C
(Automatic Addressing Setting)
HP
RT
No
10(8RT)~26(22RT)
12(10RT)~24(20RT)
12(10RT)~24(20RT)
12(10RT)~24(20RT)
10(8RT)~96(80RT)
1
38
46
22
50
10
8
12
10
14
12
Mean
Master unit capacity
Slave 1 unit capacity
Slave 2 unit capacity
Slave 3 unit capacity
Total capacity
Cooling Only
380V model
460V model
220V model
Product type
18
14
20
16
22
18
24
20
26
22
• Example) ARUV603BTE(R)5 (50RT)
60 hp 220 V Cooling Only System (Master unit: 18 HP(14 RT),
Slave 1: 14 HP(12 RT), Slave 2: 14 HP(12 RT),
Slave 3: 14 HP(12 RT))
①
②
③
④
⑤
⑥
⑦
⑧
18
14
14
14
60
1
22
50
Master/Slave DIP switch setting
• Master Unit
DIP switch
setting
ODU Setting
Factory Setting
• Slave Unit
DIP switch
setting
ODU Setting
Slave 1
Slave 2
Slave 3
ENGLISH
Main power line
connection
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 30
30
ENGLISH
Automatic Addressing
The Procedure of Automatic Addressing
The address of indoor units would be set by Automatic
Addressing
- Wait for 3 minutes after supplying power.
(Master and Slave outdoor units, indoor units)
- Press RED button of the outdoor units for 5 seconds. (SW01C)
- A “88” is indicated on 7-segment LED of the outdoor unit PCB.
- For completing addressing, 2~7 minutes are required depending on
numbers of connected indoor units
- Numbers of connected indoor units whose addressing is completed are
indicated for 30 seconds on 7-segment LED of the outdoor unit PCB
- After completing addressing, address of each indoor unit is indicated
on the wired remote control display window. (CH01, CH02,
CH03, ……, CH06 : Indicated as numbers of connected indoor units)
Power On
Waiting 3 minutes
Press RED Button for 5 sec.
(SW01C)
Automatic Addressing process start
7-segment LED
= 88
Don’t press RED Button
(SW01C)
• Automatic addressing process end Numbers of indoor
unit connected are indicated for 30seconds on
7-segment LED after completing process
Waiting about 2~7 minutes
Main Board
7-segment LED
= 88
YES
DIP switch
OK
NO
Check the connections
of communication cable
Indoor address number is displayed on wired remote controller or
indoor unit display window. It is not an error message, will
disappeared when on/off button is pressed on remote controller
ex) Display of 01, 02, ..., 15 means connection of 15 indoor units
and Automatic addressing is completed normally.
7 segment
!
SW01C
(Automatic Addressing Setting)
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 the optional function
Select the mode/function/option/value using ‘▶’, ‘◀’ Button and
confirm that using the ‘●’ button after DIP switch No.5 is turned on.
DIP-SW01
7-Segment
SW04C (X : cancel)
SW03C (ȯ: forward)
SW02C (ȭ: backward)
SW01C (Ɨ: Confirm /
Automatic Addressing)
SW01D (reset)
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 31
31
Content
FDD
Display (◎)
Fdd
Function Selection
High Static Pressure Compensation mode
Option Selection
Content
Display
(◀, ▶ ’ ◎)
Default
Optional
(◀, ▶ ’ ◎)
Automatic Refrigerant
Charging (Cooling)
Fd 1
-
-
Refrigerant Amount
Check (Cooling)
Fd 3
-
-
Automatic system
check mode
(Cooling)
Fd 7
-
-
All IDU operation
(Cooling)
Fd 8
-
-
High Static Pressure
Compensation
mode
Fn 2
oFF
oFF,
oP1~oP7
Night Low Noise
mode
Fn 3
oFF
oFF,
oP1~oP12
ODU address
setting
Fn 5
0
255
Target Pressure
Adjusting
Fn 8
oFF
oFF,
oP1~oP4
Low Ambient Kit
Fn 9
oFF
on, oFF
Remarks
This function secures the air flow rate of ODU, in case static pressure
has been applied like using duct at fan discharge of ODU.
Static pressure compensation mode setting method
* Refer FDD
guidance
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Compulsory
Operation for
1 hour
Select the Function using ‘▶’, ‘◀’ Button :
“Fn2” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op7” Push the ‘●’ button
Start the Static pressure compensation mode :
Save the selected option value in EEPROM
FAN Maximum RPM of each step
Chassis
High Efficiency
Mode (Cooling
Operation)
Auto Dust Removal
Mode
Installation
Func
Fn 10
Fn 11
oFF
on, oFF
oFF
oFF,
oP1~oP5
Compressor Max.
Frequency Limit
Fn 12
oFF
oFF,
oP1~oP9
ODU Fan Max.
RPM Limit Mode
settting
Fn 13
oFF
oFF,
oP1~oP7
Smart Load Control
Mode setting
Fn 14
oFF
oFF,
oP1~oP3
Humidity Reference
Mode setting
Fn 16
on
on, oFF
Central Control
Connection at
Indoor Unit side
Fn 19
oFF
oFF, on
Compressor Input
Current Limit mode
Fn 20
oFF
oFF,
oP1~oP10
Power
Consumption
Display on wired
remote controller
Fn 21
SPL0
SPL0, SPL1
[Pd10~Pd11]
* Refer
Comfort
Cooling
guidance
Saving in
EEPROM
UXA
880
UXB
1 000
1 000
1 150
860
840
820
800
780
760
740
950
900
850
800
750
700
650
Night Low Noise Function
User
Idu
Comfort Cooling
Mode setting
Id 10
EAch
Service
SvC
Vaccum Mode
SE 3
vACC
-
In cooling mode, this function makes the ODU fan operate at low RPM
to reduce the fan noise of ODU at night which has low cooling load.
Night low noise function setting method
Master unit PCB DIP switch on : No.5
Saving in
EEPROM
1time / 1
Selection
* Functions save in EEPROM will be maintained continuously, though
the system power was reset.
!
Max. RPM
Standard
Overload / Low
Temperature
op1
op2
op3
op4
op5
op6
op7
CAUTION
• To perform the otional funtion should be sure that All the IDU is off
mode, unless the function will not be performed.
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn3” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1~op12” Push the ‘●’ button
Start the Night low noise function :
Save the selected option value in EEPROM
ENGLISH
Optional Mode Selection
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 32
32
ENGLISH
Setting
Time Settings
Step
op1
op2
op3
op4
op5
op6
op7
op8
op9
op10
op11
op12
Judgment Time(Hr)
Operation Time(Hr)
8
9
6.5
10.5
5
12
8
9
6.5
10.5
5
12
8
9
6.5
10
5
12
Continuous operation
Continuous operation
Continuous operation
Noise
Chassis
Capacity
Step
op1~op3,op10
op4~op6,op11
op7~op9,op12
!
UXA
8~12 hp
55
52
49
UXB
14~20 hp
Noise(dBA)
59
56
53
CAUTION
• Request installer to set the function during installation.
• If ODU RPM changes, cooling capacity may go down.
Setting the ODU address
Mode setting method
22~26 hp
Mode
Heat
op1 Increase capacity
op2
op3
op4
!
Condensing Evaporating
temperature temperature
Cool
variation
variation
+2 °C
-3 °C
Increase capacity
(35.6 °F)
(37.4 °F)
+2 °C
-1.5 °C
Increase capacity
(35.6 °F)
(-34.7 °F)
Decrease power
-4 °C
+2.5 °C
consumption
(-39.2 °F)
(36.5 °F)
Decrease power
-6 °C
-4.5 °C
consumption
(-42.8 °F)
(-40.1 °F)
Purpose
Decrease power
consumption
Decrease power
consumption
Decrease power
consumption
CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• Change a power consumption or capacity.
60
57
55
Low Ambient Kit
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the Function using ‘▶’, ‘◀’ Button :
“Fn9” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”,“oFF” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn5” Push the ‘●’ button
Low Ambient Kit Mode is set
h Reference for functional logic of I/O Module
Select the Option using ‘▶’, ‘◀’ Button :
“0” ~ “255” Push the ‘●’ button
ODU address is set
!
CAUTION
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
Target pressure adjusting
Mode setting method
High Efficiency Mode (Cooling Operation)
Target low pressure will change according to ODU temperature during
the cooling operation.
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the Function using ‘▶’, ‘◀’ Button :
“Fn10” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”,“oFF” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn8” Push the ‘●’ button
High Efficiency Mode is set
Select the Option using ‘▶’, ‘◀’ Button :
“COOL” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“op1” ~ “op4” Push the ‘●’ button
Target pressure is set
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 33
33
Function setting
Setting
oFF
op1
op2
op3
op4
op5
op6
op7
op8
op9
The ability to set reverse run outdoor fan to remove dust, heat
exchanger.
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn11” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op5” Push the ‘●’ button
!
Inverter (Hz)
143 Hz
135 Hz
128 Hz
120 Hz
113 Hz
105 Hz
98 Hz
90 Hz
83 Hz
CAUTION
• Ask an authorized technician to setting a function.
• If use a function, first install a Central controller.
Auto Dust Removal Mode is set
Mode Setting
Setting
op1
Operation Operating Repeat
time
time
cycle
Stop
+2 hour
5 minutes 2hour
Detail of function
After product stopped 2 hour, fan operating 5
min(Repeated every 2 hours)
after product stopped 5 minutes, fan
stop
Twice in
op2
3 minutes
operating 3 min (Limited to two times within
+5 minutes
2 hour
2 hours)
op3
stop
after product stopped 2 hour, fan operating 5
3 minutes 1 time
+5 minutes
min(Repeated every 2 hours)
op4
after product stopped 5 minutes, fan
Stop
1 minutes 1 time operating 3 min(when io module
+1 minutes
connection/one-time operation)
op5
Stop
Low
1 minutes
+1 minutes
speed
after product stopped 1 minutes, fan
operating 1 min(every time the product stops)
ODU Fan Max. RPM Limit
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn13” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op7” Push the ‘●’ button
Compressor Max. Frequency Limit
Mode setting method
ODU Fan Max. RPM Limit Mode is set
Master unit PCB DIP switch on : No.5
MAX. RPM Limit Setting
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Chassis
Select the Function using ‘▶’, ‘◀’ Button :
“Fn 12” Push the ‘●’ button
Fan MAX. RPM
Limit (RPM)
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”,“op9” Push the ‘●’ button
Cool & Heat Selection mode is set
oFF
oP1
oP2
oP3
oP4
oP5
oP6
oP7
UXA
880
-20
-40
-60
-80
-100
-120
-140
UXB
1000
-50
-100
-150
-200
-250
-300
-350
ENGLISH
Auto Dust Removal Mode
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 34
34
ENGLISH
SLC (Smart Load Control)
Central Control Connection at Indoor Unit side
Function for set the variable target pressure which for the high
efficiency and comport operation depend on ODU load.
Mode setting method
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn14” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~“op3” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn16” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“Fn19” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“on”,“oFF” Push the ‘●’ button
SLC(Smare Lode Control) Mode is set
Central Control Connection at Indoor
Unit side Mode is set
SLC(Smare Lode Control) Mode
Setting
oFF
oP1
oP2
oP3
Mode
Not Setting
Smooth Mode
Normal Mode
Peak Mode
Detail of function
Slowly control, a target pressure value
Normal control, a target pressure value
Fast control, a target pressure value
Compressor Input Current Limit
System Input Current Control
Mode setting method
Master unit PCB DIP switch on : No.5
Humidity Reference
Mode setting method
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Master unit PCB DIP switch on : No.5
Select the Function using ‘▶’, ‘◀’ Button :
“Fn20” Push the ‘●’ button
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“op1”~”op10” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn16” Push the ‘●’ button
Compressor Input Current Limit mode is set
Select the Option using ‘▶’, ‘◀’ Button :
“oFF”,“on” Push the ‘●’ button
Compressor Input Current Limit
Mode
op1
op2
op3
op4
op5
op6
op7
op8
op9
op10
Humidity Reference Control mode is set
Mode setting
- on:using humidity sensor
- oFF:not setting
<Using of humidity sensor>
- When used cooling operation of SLC function,it will improve energy
effcience because evaporation temperature wll be decreased
!
Compressor Input Current Limit
95 %
90 %
85 %
80 %
75 %
70 %
65 %
60 %
55 %
50 %
CAUTION
• Ask an authorized technician to setting a function.
• If do not use a function, set an off-mode.
• If use a function, capacity may go down.
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 35
35
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Func” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Fn21” Push the ‘●’ button
Select the Option using ‘▶’, ‘◀’ Button :
“SPL0”,“SPL1”,”Pd10”,”Pd11”Push the ‘●’
button
Power Consumption Display on wired remote
controller Mode is set
Setting
Detail of function
SPL0
Not used Smart plug logic
SPL1
Using smart plug logic
Pd10
Not installation
Pd11
PDI was installed
Comfort Cooling operation
It is function to reduce the ODU energy consumption by the continuou
s operation without thermo off.
Mode setting method
Master unit PCB DIP switch on : No.5
Select the mode using ‘▶’, ‘◀’ Button :
“Idu” Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
“Id10” Push the ‘●’ button
EEV pulse appearing
(seg1, seg2:Idu No./seg3, seg4:Mode)
Select the Function using ‘▶’, ‘◀’ Button :
Idu No. setting and Push the ‘●’ button
Select the Function using ‘▶’, ‘◀’ Button :
Mode setting and Push the ‘●’ button
*Mode can be set 0~3 (”0” is no setting)
Setting of continous cooling operation
Setting of continous cooling operation
Mode setting
0
1
2
3
Effect
No setting
Cooling capacity low,Power consumption low
Cooling capacity mid,Power consumption mid
Cooling capacity high,Power consumption high
ENGLISH
Power Consumption Display on wired remote
controller
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 36
36
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
- Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of outdoor unit control board as
shown in the table.
- If more than two troubles occur simultaneously, lower number of error code is first displayed.
- After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st, 2nd, 3rd LED of 7-segment indicates error number, 4th LED indicates unit number.(* = 1: Master, 2: Slave 1, 3: Slave 2, 4: Slave 3)
Ex) 1051 : Error occurrence with error number 105 at No. 1 outdoor unit (=Master unit)
In case of indoor unit error occurrence, the error number is only shown at remote controller
without 7 segment LED of outdoor unit.
Ex) CH → 01 : Error occurrence with error number 01 (at remote controller)
In case of compressor error occurrence, 7 segment LED of outdoor unit control board
will display its error number alternately with compressor number.
Ex) 213 → C23 : It means that compressor error occurred with Error No. 21 at No. 3 Outdoor unit (=Slave2)
Repeat
Error No.
Error No. of Unit
Error No. of Compressor
* Refer to the DX-Venitilation manual for DX-Venitilation error code.
Indoor unit related error
Display
Outdoor unit related error
ENGLISH
Self-Diagnosis Function
Title
Cause of Error
0
1
-
Air temperature sensor of indoor unit
Air temperature sensor of indoor unit is open or short
0
2
-
Inlet pipe temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit is open or short
0
3
-
Communication error : wired remote controller ↔
indoor unit
Failing to receive wired remote controller signal in indoor unit PCB
0
4
-
Drain pump
Malfunction of drain pump
0
5
-
Communication error : outdoor unit ↔ indoor unit
Failing to receive outdoor unit signal in indoor unit PCB
0
6
-
Outlet pipe temperature sensor of indoor unit
Outlet pipe temperature sensor of indoor unit is open or short
0
8
-
Hydro Kit Hot water storage tank Temperature
sensor
Pipe temperature sensor is open or short
0
9
-
Indoor EEPROM Error
In case when the serial number marked on EEPROM of
Indoor unit is 0 or FFFFFF
1
0
-
Poor fan motor operation
Disconnecting the fan motor connector / Failure of indoor
fan motor lock
1
1
-
Communication error : Hydro Kit Indoor unit ↔
Inv.PCB
Failing to receive Inv. PCB signal in indoor unit
1
2
-
Hydro Kit Inv.PCB error
Hydro Kit Inv.PCB error
1
3
-
Hydro Kit Solar heat piping temperature sensor
error
Pipe temperature sensor is open or short
1
4
-
Hydro Kit Indoor unit Flow switch error
Flow switch flow detection error
1
5
-
Hydro Kit Liquid pipe Strange overheat Error
Temperature sensor defective or hot water inflow
1
6
-
Hydro KitIndoor unit Inlet and Outlet pipe
Temperature sensor Error
Pipe temperature sensor is open or short
1
7
-
Hydro Kit Indoor unit Inlet pipe Temperature
sensor Error
Outside air Introduction duct Inlet pipe
Temperature sensor Error
Pipe temperature sensor is open or short
1
8
-
Hydro Kit Indoor unit Outlet pipe Temperature
sensor Error
Pipe temperature sensor is open or short
2
1
*
Outdoor Unit Inverter Compressor IPM Fault
Outdoor Unit Inverter Compressor Drive IPM Fault
Outdoor Unit Inverter PCB Input Current excess (RMS)
2
2
*
Inverter PCB Input Over Current(RMS) of Master
Outdoor Unit
2
3
*
Outdoor Unit Inverter Compressor DC Link Low or
High Voltage
System is turned off by Master Outdoor Unit DC Link Low/High
Voltage.
2
4
*
Outdoor Unit High Pressure Switch
System is turned off by Master Outdoor Unit high pressure switch.
2
5
*
Outdoor Unit Input Voltage High/ Low Voltage
Over 310V or below 143V (ARUV***BTE(R)5)
Over 598V or below 320V (ARUV***DTE5)
• 1 : Master outdoor unit error, 2 : salve 1 outdoor unit error
• 3 : slave2 outdoor unit error, 4 : slave3 outdoor unit error
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 37
37
Outdoor unit related error
Title
Cause of Error
2
6
*
Outdoor Unit Inverter Compressor Start Failure
The first start failure by Outdoor Unit Inverter Compressor
abnormality or Compressor locked
2
9
*
Outdoor Unit Inverter Compressor Over Current
Outdoor Unit Inverter Compressor Fault OR Drive Fault
3
2
*
Outdoor Unit Inverter Compressor1 High
Discharge Temperature
Outdoor Unit Inverter Compressor1 High Discharge Temperature
3
3
*
Outdoor Unit Inverter Compressor2 High
Discharge Temperature
Outdoor Unit Inverter Compressor2 High Discharge Temperature
3
4
*
High Pressure of Outdoor Unit
High Pressure of Outdoor Unit
3
5
*
Low Pressure of Outdoor Unit
Low Pressure of Outdoor Unit
4
0
*
Outdoor Unit Inverter Compressor CT Sensor Fault
Outdoor Unit Inverter Compressor CT Sensor open or short
4
1
*
Outdoor Unit Inverter Compressor1 Discharge
Temperature Sensor Fault
Outdoor Unit Inverter Compressor Discharge Temperature
Sensor open or short
4
2
*
Outdoor Unit Low Pressure Sensor Fault
Outdoor Unit Low Pressure Sensor open or short
4
3
*
Outdoor Unit High Pressure Sensor Fault
Outdoor Unit High Pressure Sensor open or short
4
4
*
Outdoor Unit Air Temperature Sensor Fault
Outdoor Unit Air Temperature Sensor open or short
4
5
*
Outdoor Unit Heat Exchanger Temperature Sensor
(Front side) Fault
Outdoor Unit Heat Exchanger Temperature Sensor(Front side)
open or short
4
6
*
Outdoor Unit Suction Temperature Sensor Fault
Outdoor Unit Suction Temperature Sensor open or short
4
7
*
Outdoor Unit Inverter Compressor2 Discharge
Temperature Sensor Fault
Outdoor Unit Inverter Compressor2 Discharge Temperature
Sensor open or short
4
9
*
Outdoor Unit Faulty IPM Temperature Sensor
Outdoor Unit IPM Temperature Sensor short/open
5
0
*
Omitting connection of R, S, T power of Outdoor
Unit
Omitting connection of outdoor unit
5
1
*
Excessive capacity of indoor units
Excessive connection of indoor units compared to capacity of
Outdoor Unit
5
2
*
Communication error : inverter PCB ’ Main PCB
Failing to receive inverter signal at main PCB of Outdoor Unit
5
3
*
Communication error : indoor unit ’ Main PCB of
Outdoor Unit
Failing to receive indoor unit signal at main PCB of Outdoor Unit.
5
7
*
Communication error : Main PCB ’ inverter PCB
Failing to receive signal main PCB at inverter PCB of Outdoor Unit
6
0
*
Inverter PCB EEPROM Error of Master Outdoor Unit
Access Error of Inverter PCB of Outdoor Unit
6
2
*
Outdoor Unit Inverter Heatsink High Temperature
System is turned off by Outdoor Unit Inverter Heatsink High
Temperature
6
5
*
Outdoor Unit Inverter Heatsink Temperature
Sensor Fault
Outdoor Unit Inverter Heatsink Temperature Sensor open or
short
6
7
*
Outdoor Unit Fan Lock
Restriction of Outdoor Unit
7
1
*
Inverter CT Sensor Error of Master Outdoor Unit
Inverter CT Sensor open or short of Outdoor Unit
7
5
*
Outdoor Unit Fan CT Sensor Error
Outdoor Unit Fan CT Sensor open or short
7
7
*
Outdoor Unit Fan Over Current Error
Outdoor Unit Fan Current is over 6A
7
9
*
Outdoor Unit Fan Start Failure Error
The first start failure by Outdoor Unit Fan abnormality or Fan
locked
8
6
*
Outdoor Unit Main PCB EEPROM Error
Communication Fail Between Outdoor Unit Main MICOM and
EEPROM or omitting EEPROM
8
7
*
Outdoor Unit Fan PCB EEPROM Error
Communication Fail Between Outdoor Unit Fan MICOM and
EEPROM or omitting EEPROM
1
0
4
*
Communication Error Between Outdoor Unit and
Other Outdoor Unit
Failing to receive Slave Unit signal at main PCB of Outdoor Unit
1
0
5
*
Outdoor Unit Fan PCB Communication Error
Failing to receive fan signal at main PCB of Outdoor unit
1
0
6
*
Outdoor Unit Fan IPM Fault Error
Instant Over Current at Outdoor Unit Fan IPM
ENGLISH
Display
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 38
38
ENGLISH
Network error
Outdoor unit related error
Display
Title
Cause of Error
1
0
7
*
Outdoor Unit Fan DC Link Low Voltage Error
Outdoor Unit Fan DC Link Input Voltage is under 50V
1
1
3
*
Outdoor Unit Liquid pipe Temperature Sensor Error
Liquid pipe temperature sensor of Outdoor Unit is open or short
1
1
4
*
Outdoor Unit Subcooling Inlet Temperature
Sensor Error
Outdoor Unit Subcooling Inlet Temperature Sensor Error
1
1
5
*
Outdoor Unit Subcooling Outlet Temperature
Sensor Error
Outdoor Unit Subcooling Outlet Temperature Sensor Error
1
1
6
*
Outdoor Unit Oil Level Sensor Error
Oil Level Sensor of Outdoor Unit is open or short
1
4
5
*
Outdoor unit Main Board - External Board
communication Error
Outdoor unit Main Board - External Board communication Error
1
5
0
*
Outdoor Unit Discharge Superheat not satisfied
Outdoor Unit Compressor Discharge Superheat not satisfied
during 5 Min.
1
5
1
*
Failure of operation mode conversion at Outdoor
Unit
Failure of operation mode conversion at Outdoor Unit
1
5
3
*
Outdoor Unit Heat Exchanger Temperature
Sensor (upper part) Fault
Outdoor Unit Heat Exchanger Temperature Sensor (upper part)
Fault
1
5
4
*
Outdoor Unit Heat Exchanger Temperature
Sensor (lower part) Fault
Outdoor Unit Heat Exchanger Temperature Sensor(lower part)
open or short
1
8
2
*
Outdoor unit External Board Main-Sub Micom
communication Error
Outdoor Unit Main Board Main-Sub Micom communication
failed
1
8
7
*
Hydro - Kit P,HEX bursting error
Inlet water temperature is below 5 degree or water temperature
error during defrosting operation.
1
9
3
*
Outdoor Unit Fan Heatsink High Temperature
System is turned off by Outdoor Unit Fan Heatsink High
Temperature
1
9
4
*
Outdoor Unit Fan Heatsink Temperature Sensor
Fault
Outdoor Unit Fan Heatsink Temperature Sensor open or short
2
4
2
*
Network error of cntral controller
Communication wiring defect
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 39
39
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/m3 (lbs/ft3)] (Freon gas weight per unit
air volume) for facilitating calculation.
Concentration limit: 0.44 kg/m3 (0.028 lbs/ft3) (R410A)
Outdoor unit
(No.1 system)
Calculate refrigerant concentration
Total amount of refrigerant
system [kg(lbs)]
Volume of smallest room
whereindoor unit is installed
[m3(ft3)]
= Maximum concentration limit
[kg/m3 (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 system`s refrigerant quantity by deviding into smaller
separate system.
Flow of
refrigerant
Countermeasure 2
Indoor unit
Gas leak alarm
Mechanical ventilator
Room where refrigerant leaks
(Refrigerant of the whole No.1
system flows out.)
Indoor unit
Checking procedure of limiting concentration
Check Concentration limit along following steps and take appropriate
measure depending on the situation.
Calculate amount of all the replenished refrigerant [kg (lbs)] per each
refrigerant system.
Amount of pre charged
refrigerant per single unit
system
+
Amount of additional = Total amount of
replenished refrigerant refrigerant in the system
[kg (lbs)]
Countermeasure 1 Opening effective to ventilation
Amount of replenished
refrigerant at factory shipment
Note : In case one refrigerant facility is
divided into 2 or more refrigerant
systems and each system is
independent, amount of replenished
refrigerant of each system shall be
adopted.
Amount of additionally
replenished refrigerant
depending on piping
length or piping
diameter by customer
Calculate refrigerant concentration level
Calculate the volume of the room where indoor unit is installed as
single room or the smallest room.
- Without partition
- With partition but opened which
serve passage of air to adjoining
room
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Opening
Partition
In the case of opening
without door , or 0.15
% or more openings
(to floor space) both
above and below door)
- With partition and without opening which serve as passage of air to
adjoining room
Outdoor unit
Indoor unit
Smallest
room
Pay a special attention to the place, such as a basement, etc.
where refrigerant can stay, since refrigerant is heavier than air.
ENGLISH
CAUTION FOR REFRIGERANT LEAK
1,MFL67221443,영영 19. 1. 31. 영영 11:48 Page 40
40
ENGLISH
INSTALLATION GUIDE AT THE
SEASIDE
Model Designation
Product information
• Product Name : Air conditioner
• Model Name :
! CAUTION
• Air conditioners should not be installed in areas where corrosive
gases, such as acid or alkaline gas, are produced.
• Avoid installing the product where it could be exposed to sea
wind (salty wind) directly. It can result corrosion on the product.
Corrosion, particularly on the condenser and evaporator fins,
could cause product malfunction or inefficient operation.
• If outdoor unit is installed close to the seaside, should avoid
direct exposure to the sea wind.
Product Sales Name
Model Factory Name
ARUx***yTE5 series
x = N (Heat Pump), V (Cooling Only), M (Heat Recovery / Heat Pump)
y = B (220-240 V),
D (460 V)
*** = Numeric; (Cooling capacity)
• Additional information : Serial number is refer to the bar code on the
product.
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.
Airborne Noise Emission
The A-weighted sound pressure emitted by this product is below 70
dB.
Sea wind
** The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe
working levels.
Whilst there is a correlation between the emission and exposure
levels, this cannot be used reliably to determine whether or not further
precautions are required.
Factor that influence the actual level of exposure of the workforce
include the characteristics of the work room and the other sources of
noise, i.e. the number of equipment and other adjacent processes and
the length of time for which an operator exposed to the noise. Also,
the permissible exposure level can vary from country to country.
Sea wind
In case, to install the outdoor unit on the seaside, set up a windbreak
not to be exposed to the sea wind.
Windbreak
Sea wind
- It should be strong enough like concrete to prevent the sea wind
from the sea.
- The height and width should be more than 150 % of the outdoor unit.
- It should be kept more than 70 cm (2.3 ft) of distance between
outdoor unit and the windbreak for smooth air flow.
Select a well-drained place.
• Periodic ( 1 times per 6 month) cleaning of the dust or salt
particles stuck on the heat exchanger is necessary by using clean
water
If there is improper installation or maintenance not complying with the
installation guide, product’s performance and reliability is not
guauranteed.
This information, however, will enable the user of the equipment to
make a better evaluation of the hazard and risk.
1,MFL67221443,영영 19. 1. 31. 영영 11:47 Page 1
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