Heat Controller DMH18DB-1 User Manual
HEAT CONTROLLER, INC.
Wall Mounted
Multi-Split System
Air Conditioning/Heat Pump
DMH18DB-1
Before servicing the unit, read the
“safety precautions” in this manual.
Only for authorized service personnel.
Multi type Air Conditioner Service Manual
TABLE OF CONTENTS
Combination table.......................................................................................................................................3
Safety Precautions......................................................................................................................................4
Dimensions................................................................................................................................................10
Indoor Unit.............................................................................................................................................10
Outdoor Unit...........................................................................................................................................11
Product Specifications.............................................................................................................................12
A-DMH18DB-1 .......................................................................................................................................12
B-DMH18DB-1 .......................................................................................................................................13
Installation.................................................................................................................................................14
Installation Parts.....................................................................................................................................14
Installation Tools.....................................................................................................................................14
Select the best location .........................................................................................................................15
Piping length and elevation....................................................................................................................16
Fixing Installation Plate(Standard Type).................................................................................................17
Flaring Work and Connection of Piping..................................................................................................18
Flaring work............................................................................................................................................18
Connecting the Piping............................................................................................................................19
Connecting the Cable between Indoor Unit and Outdoor Unit.............................................................25
Connect the cable to the Indoor unit. .....................................................................................................25
Connect the cable to the Outdoor unit....................................................................................................26
Connection method of the connecting cable(Example)..........................................................................27
Connect the cable to the indoor unit.......................................................................................................28
Checking the Drainage, Forming the Pipings and Long Pipe Setting .................................................29
Checking the drainage............................................................................................................................29
Forming the piping..................................................................................................................................30
Air Purging and Evacuation.....................................................................................................................31
Checking method ...................................................................................................................................31
Evacuation..............................................................................................................................................32
Charging ....................................................................................................................................................33
Test Running.............................................................................................................................................34
Operation...................................................................................................................................................35
Function of control..................................................................................................................................35
Function of Indoor Unit...........................................................................................................................40
Function of Outdoor Unit........................................................................................................................41
Remote Control Operation .....................................................................................................................42
Disassembly..............................................................................................................................................43
Indoor Unit..............................................................................................................................................43
Schematic Diagram...................................................................................................................................46
Electronic Control Device.......................................................................................................................46
Wiring Diagram.......................................................................................................................................49
Components Locations...........................................................................................................................50
Troubleshooting Guide.............................................................................................................................54
Refrigeration Cycle Diagram..................................................................................................................54
Self-diagnosis Function..........................................................................................................................55
Cycle Troubleshooting Guide..................................................................................................................56
Electronic Parts Troubleshooting Guide .................................................................................................57
Error Code..............................................................................................................................................62
2-way, 3-way Valve....................................................................................................................................66
2 Multi type Air Conditioner
Operation
1 Unit
2 Unit
Combination of Indoor Unit(kBtu/h)
Cooling
Each Capacity
Unit-A Unit-B
UNIT-A(Btu/h) UNIT-B(Btu/h)
Total Btu/h kW
UNIT-A(Btu/h) UNIT-B(Btu/h)
Btu/h kW
Total Capacity Each Capacity Total Capacity
Heating
9
99918
9000
9000
-
9000
9000
18000
9000
18000
2.63
5.27
2.63
5.27
9000
9000
-
9000
NOTICE
Combination table
Combination table
Notes :
1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; outdoor temp. 35°C(95°F)DB, 23.9°C(75°F)WB
2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB
3.The total ability of connected a indoor unit is up to 18k Btu/h
Symbols Used in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
Service Manual 3
Safety Precautions
WARNING
CAUTION
WARNING
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.
• There is risk of fire or electric
shock.
Install the panel and the cover
of control box securely.
• There is risk of fire or electric
shock.
For electrical work, contact the
dealer, seller, a qualified electrician,
or an Authorized Service Center
• Do not disassemble or repair the
product. There is risk of fire or
electric shock.
Always install a dedicated circuit and breaker.
• Improper wiring or installation may
cause fire or electric shock
.
• There is risk of fire or electric
Always ground the product.
• There is risk of fire or electric
shock.
Use the correctly rated breaker or fuse.
shock.
4 Multi type Air Conditioner
Safety Precautions
Do not install, remove, or reinstall the unit by yourself
(customer).
• There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
• It may cause injury, accident, or
damage to the product.
Be cautious when unpacking
and installing the product.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the condenser and evaporator.
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,
and personal injury.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
• Moisture may condense and wet or
damage furniture.
Do not allow water to run into
electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Gasolin
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
Service Manual 5
Safety Precautions
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
If strange sounds, or smoke
comes from product. Turn the
breaker off.
turn the product on.
• Do not use the telephone or turn
switches on or off. There is risk of
explosion or fire
Do not open the inlet grill 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.
• There is risk of electric shock or
fire.
When the product is soaked
(flooded or submerged), contact
an Authorized Service Center.
• There is risk of fire or electric
shock.
Stop operation and close the
window in storm or hurricane.
If possible, remove the product from the window before
the hurricane arrives.
• There is risk of property damage,
failure of product, or electric shock.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
6 Multi type Air Conditioner
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric shock.
Safety Precautions
CAUTION
When the product is not to be used for a long time,
disconnect the power by turning off the breaker.
• There is risk of product damage or failure, or unintended operation.
■ Installation
Always check for gas (refrigerant) leakage after installation or repair of product.
Install the drain hose to ensure that
water is drained away properly.
Take care to ensure that nobody could step on
or fall onto the outdoor unit.
• This could result in personal injury and product damage.
Keep level even when
installing the 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
oftend neighbors.
• It may cause a problem for your
neighbors.
• A bad connection may cause water
leakage.
Use two or more people to lift
and transport the product.
• Avoid personal injury.
• To avoid vibration or water leakage.
90°
Do not install the product
where it will be 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.
Service Manual 7
Safety Precautions
■ Operational
Do not expose the skin directly to cool air for long periods
of time.
(Don't sit in the draft.)
• This could harm to your health.
Use a soft cloth to clean. Do
not use harsh detergents, solvents, etc.
• There is risk of fire, electric shock,
or damage to the plastic parts of
the product.
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.
Do not touch the metal parts of
the product when removing the
air filter. They are very sharp!
• There is risk of personal injury.
Do not block the inlet or outlet
of air flow.
• It may cause product failure.
Do not step on or put anyting
on the product. (outdoor
units)
• There is risk of personal injury and
failure of product.
Thinner
Wax
Always insert the filter securely. Clean the filter every two
weeks or more often if necessary.
•
A dirty filter reduces the efficiency of
the air conditioner and could cause
product malfunction or damage.
8 Multi type Air Conditioner
Do not insert hands or other
objects through the air inlet or
outlet while the product is
operated.
• There are sharp and moving parts
that could cause personal injury.
Do not drink the water drained
from the product.
• It is not sanitary and could cause
serious health issues.
Safety Precautions
Use a firm stool or ladder when cleaning or
maintaining the product.
• Be careful and avoid personal injury.
Do not recharge or disassemble the batteries.
Do not dispose of batteries in a fire.
• They may burn or explode.
Replace the all batteries in the remote control
with new ones of the same type. Do not mix
old and new batteries or different types of batteries.
• There is risk of fire or explosion
If the liquid from the batteries gets onto your
skin or clothes, wash it well with clean water.
Do not use the remote if the batteries have
leaked.
• The chemicals in batteries could cause burns or other
health hazards.
Service Manual 9
Dimensions
Installation plate
D
H
W
Dimensions
Indoor Unit
Split Type Indoor
Model
Dimension
W mm(in) 870(34.2)
Split Type(S4)
9 kBtu/h
H mm(in) 270(10.6)
D mm(in) 153(6)
10 Multi type Air Conditioner
Outdoor Unit
W
D
L1
L2
L4
L3
H
L7L5L6
Dimensions
MODEL
DIM
W mm(in) 870(34.3)
H mm(in) 655(25.8)
D mm(in) 320(12.6)
L1 mm(in) 370(14.6)
L2 mm(in) 25(1.0)
L3 mm(in) 775(30.5)
L4 mm(in) 25(1.0)
L5 mm(in) 546(21.5)
L6 mm(in) 160(6.3)
L7 mm(in) 160(6.3)
UE
18kBtu/h
Service Manual 11
Product Specifications
Product Specifications
Outdoor Unit
Nominal Capacity Cooling kW
(Min~Rating~Max) Btu/h
Nominal Input Cooling kW
(Min~Rating~Max) Heating kW
Testing Combination
Running Current(Rating) Cooling A
Starting Current Cooling/Heating A
Power Supply Ø / V / Hz
Power Supply Cable(Outdoor) No. x mm
Power and Transmission Cable
(Outdoor to Indoor or Outdoor to BD)
Power and Transmission Cable(BD to Indoor) No. x mm
Dimensions W x H x D mm(inch)
Net Weight kg(lbs)
Max. Number of Connectable Indoor Units
Compressor (#1) Type
Compressor (#2) Type
Compressor (#3) Type
Refrigerant Cycle A Charge (at 7.5m) g(oz)
Additional Refrigerant Charge g/m(oz/ft)
Heat Exchanger (Rows x Column x FPI) x No.
Fan Capacitor µF/Vac
Sound Level(H/L) Sound Pressure dB(A)+3
Piping Connections Liquid(Cycle A) mm(inch)
Max. Interunit Total Piping m(ft)
Piping Length Main Piping m(ft)
Max. Elevation Outdoor Unit~Indoor Unit m(ft)
Difference Indoor Unit~Indoor Unit m(ft)
Operation Range Cooling ˚C(˚F)
(Outdoor) Heating ˚C(˚F)
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F) WB
Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB
Piping Length - Interconnecting Piping Length 7.5m
Heating kW
Heating A
Qty x Model
Motor type
Oil charge volume cc
Oil Type
Qty x Model
Motor type
Oil charge volume cc
Oil type
Qty x Model
Motor type
Oil charge volume cc
Oil type
Cycle B Charge (at 7.5m) g(oz)
Type
Control
Defrosting Method
Drive
Discharge Direction(Side/Top)
Air Flow Rate x No. of Fan CMM(cfm)
Gas(Cycle A) mm(inch)
Liquid(Cycle B) mm(inch)
Gas(Cycle B) mm(inch)
High Pressure Gas mm(inch)
Total Branch Piping m(ft)
Each Branch Piping m(ft)
- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F) WB
- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB
- Level Difference of Zero
Btu/h
No. x mm
2
2
2
A-DMH18DB-1
5.27
18000
5.27
18000
1.98
1.96
A2NH093GCA0
8.8
8.6
13
1/208~230/60
3*2.5
4*0.75
-
870*655*320(34.3*25.8*12.6)
60(132.2)
2
Rotary(Non Tropical)
1*GK113KAA
Induction Motor
330
FVC68D
Rotary(Non Tropical)
1*GK094KAA
Induction Motor
330
FVC68D
-
-
-
-
-
1400(49)
-
R410A
EEV
20(0.22)
(2R X 28C X 18) X 1
Reversing Cycle
6/370
Direct Drive
Side
50(1765.7)
51
6.35(1/4)
9.52(3/8)
-
-
30(98.4)
15(49.2)
-
7.5(24.6)
7.5(24.6)
7.5(24.6)
21~43(69.8~109.4)
-5~24(23~75.2)
2. Wiring cable size must comply with the applicable local and national code.
3. The specification may be subject to change without prior notice for purpose
of improvement.
12 Multi type Air Conditioner
Product Specifications
Indoor Unit
Power Supply Ø / V / Hz
Cooling Capacity kW
Heating Capacity kW
Current Nominal Running Current A
Fan Motor Type
Fan Type
Motor Output(W) x No. of Unit
Air Flow Rate CMM
(H / M / L) cfm
External Static Pressure mmAq
Capacitor µF / Vac
Drive
Coil Row x Column x FPI
Dimensions (W x H x D) Body mm(inch)
Decorative Panel mm(inch)
Net Weight Body kg (lbs)
Decorative Panel kg (lbs)
Air Filter
Sound Level (H / M / L) dB(A)+3
Piping Connections Liquid mm (inch)
Gas mm (inch)
Drain(OD/ID) mm
Dehumidification Rate l/h
Safety Devices
Temperature Sensor
Referigerant
Referigerant Control
Connectable Outdoor Unit
Power and Transmission Interunit Cable No. x mm
Btu/h
Btu/h
2
B-DMH18DB-1
1/208~230/60
2.63
9000
2.63
9000
0.5
BLDC
Cross Flow fan
15*1
7
247.1
-
-
Direct drive
2*15*20
870*270*153(34.2*10.6*6)
-
7(15.4)
-
Long life filter
31/27/21
6.35(1/4)
9.52(3/8)
20/13
1.2
Fuse
Thermistor
R-410A
EEV(Outdoor Unit)
Multi
4*0.75
Note:
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F) WB
Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB
Piping Length - Interconnecting Piping Length 7.5m
2. Wiring cable size must comply with the applicable local and national code.
3. The specification may be subject to change without prior notice for purpose of improvement.
- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F) WB
- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB
- Level Difference of Zero
Service Manual 13
Installation
Type "A" screw and plastic anchor
Type "B" screw
Remote Control Holder
Installation plate
Figure FigureName
Screw driver
Electric Drill
Measuring Tape, Knife
Hole Core Drill
Spanner
Torque wrench
Ohmmeter
Hexagonal wrench
Ammeter
Gas Leak Detector
Thermometer,
Level
Flaring Tool Set
Name
Installation
Read carefully, and then follow step by step.
Installation Parts
Installation Tools
14 Multi type Air Conditioner
Select the best location
More than 20cm
(7.9 inch)
More than 30cm
(11.8 inch)
More than 30cm
(11.8 inch)
Indoor unit
1. Do not have any heat or steam near the unit.
2. Select a place where there are no obstacles in front
of the unit.
3. Make sure that condensation drainage can be conveniently routed away.
4. Do not install near a doorway.
5. Ensure the spaces indicated by arrows from the wall,
ceiling, fence or other obstacles.
6. Use a stud finder to locate studs to prevent unnecessary damage to the wall.
Installation
Outdoor unit
1. If an awning is built over the unit to prevent direct
sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.
2. Ensure that the spaces indicated by arrows around
front, back and side of the unit.
3. Do not place animals and plants in the path of the
warm air.
4. Take the air conditioner weight into account and
select a place where noise and vibration are minimum.
5.
Select a place so that the warm air and sound from
the air conditioner do not disturb neighbors.
Rooftop Installations:
If the outdoor unit is installed on a roof structure, be
sure to level the unit. Ensure the roof structure and
anchoring method are adequate for the unit location.
Consult local codes regarding rooftop mounting.
more than 20cm
(7.9 inch)
more than 70cm
(27.6 inch)
more than 20cm
(7.9 inch)
more than 60cm
(23.6 inch)
Service Manual 15
Installation
B
h2
h1
A
B
h1
Piping length and elevation
Multi Piping Type
Capacity(Btu/h)
Max total length of
all pipes (A+B)
Max length of each
pipe (A/B)
Min length of each
pipe (A/B)
Max Elevation
between each
indoor unit and out-
Max elevation
between indoor
door unit (h1)
18k 30m(100ft) 15m(50ft) 5m(16ft) 7.5m(25ft) 7.5m(25ft)
Pipe Size
Indoor Capacity
(Btu/h)
Gas Liquid Standard Length Additional Refrigerant
9k 9.52mm(3/8") 6.35mm(1/4") 7.5m(25ft) 20g/m(0.22oz/ft)
units (h2)
CAUTION: Capacity is based on standard length and maximum allowance length is on the
basis of reliability.
16 Multi type Air Conditioner
Fixing Installation Plate
Installation Plate
Type "A" screw
Chassis
Hook
The wall you select should be strong and solid
enough to prevent vibration
1. Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a concrete
wall, use anchor bolts.
• Mount the installation plate horizontally by aligning
the centerline using a level.
2. Measure the wall and mark the centerline. It is also
important to use caution concerning the location of
the installation plate. Routing of the wiring to power
outlets is through the walls typically. Drilling the
hole through the wall for piping connections must
be done safely.
Installation
CHASSIS
(Grade)
S4 50(1.97) 105(4.13) 59(2.32) 105(4.13)
Distance (mm/inch)
ABCD
D
C
Ø70mm
(Ø2.75inch)
Left rear piping Right rear piping
Installation plate
B
A
(Ø2.75inch)
Ø70mm
Service Manual 17
Flaring Work and Connection of Piping
Copper
pipe
90°
Slanted Uneven Rough
Flaring Work and Connection of Piping
Flaring work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.
Cut the pipes and the cable.
1. Use the piping kit accessory or the pipes purchased
locally.
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m (5.0ft) longer than the pipe length.
Burrs removal
1. Completely remove all burrs from the cut cross section
of pipe/tube.
Pipe
Reamer
2. Put the end of the copper tube/pipe in a downward
direction as you remove burrs in order to avoid dropping
burrs into the tubing.
Putting nut on
• Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr
removal.
(not possible to put them on after flaring work)
Flaring work
• Carry out flaring work using flaring tool as shown below.
• Firmly hold copper pipe in a Bar in the dimension shown
in the table below.
Outside diameter A
mm inch mm
Ø6.35 1/4 1.1~1.3
Ø9.52 3/8 1.5~1.7
Bar
Point down
Copper tube
"A"
Copper pipe
Clamp handle
Flare nut
Handle
Bar
Yoke
Cone
Red arrow mark
18 Multi type Air Conditioner
Flaring Work and Connection of Piping
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Check
1. Compare the flared work with the figure.
2. If a flared section is defective, cut it off and do flaring
work again.
Connecting the Piping
Indoor
1. Prepare the indoor unit's piping and drain hose for installation through the wall.
2. Remove the plastic tubing retainer(see the illustration) and pull the tubing and drain hose away from
chassis.
3. Replace the plastic holder in original position.
For right rear piping
1. Route the indoor tubing and the drain hose in the
direction of rear right.
2.
Insert the connecting cable into the indoor unit from the
outdoor unit through the piping hole.
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy connec-
tion later.
3. Tape the tubing, drain hose, and the connecting
cable. Be sure that the drain hose is located at the
lowest side of the bundle. Locating at the uper side
can cause drain pan to overflow inside the unit.
If the drain hose is routed inside the room, insulate the
hose with an insulation material* so that dripping from
"sweating"(condensation) will not damage furniture or
floors.
*Foamed polyethylene or equivalent is recommended.
Drain hose
Tape
Connecting
pipe
Drain hose
Connecting cable
Service Manual 19
Flaring Work and Connection of Piping
Drain hose
Connecting
cable
4. Indoor unit installation
Hook the indoor unit onto the upper portion of the
installation plate.(Engage the two hooks of the rear
top of the indoor unit with the upper edge of the
installation plate.) Ensure that the hooks are properly
seated on the installation plate by moving it left and
right.
Press the lower left and right sides of the unit against
the installation plate until the hooks engage into their
slots(clicking sound).
Connecting the piping to the indoor unit and drain
hose to drain pipe.
1. Align the center of the pipes and sufficiently tighten
the flare nut by hand.
Indoor unit tubing Flare nut Pipes
2. Tighten the flare nut with a wrench.
Outside diameter Torque
mm inch kgf.m(lbf-ft)
Ø6.35 1/4 1.8~2.5(13)
Ø9.52 3/8 3.4~4.2(30)
3. When extending the drain hose at the indoor unit,
install the drain pipe.
Wrap the insulation material around the connecting
portion.
1. Overlap the connection pipe insulation material and
the indoor unit pipe insulation material. Bind them
together with vinyl tape so that there may be no gap.
2. Wrap the area which accommodates the rear piping
housing section with vinyl tape.
Wrench
Indoor unit tubing
Drain pipe
Connection pipe
Vinyl tape (wide)
Connecting cable
Open-end wrench (fixed)
Flare nut
Indoor unit drain hose
Adhesive
Plastic bands
Vinyl tape(narrow)
Insulation material
Wrap with vinyl tape
Connection pipe
Indoor unit pipe
3. Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where
they fit into the rear piping housing section.
20 Multi type Air Conditioner
Pipe
Vinyl tape(narrow)
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
For left rear piping
1. Route the indoor tubing and the drain hose to the
required piping hole position.
2. Insert the piping, drain hose, and the connecting
cable into the piping hole.
3.
Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy connec-
tion later.
4. Tape the drain hose and the connecting cables.
5. Indoor unit installation
• Hang the indoor unit from the hooks at the top of the
installation plate.
• Insert the spacer etc. between the indoor unit and
the installation plate and separate the bottom of the
indoor unit from the wall.
Flaring Work and Connection of Piping
1 2
Connecting
cable
Drain pipe
Indoor unit
Spacer
Installation plate
8cm
Connecting the piping to the indoor unit and the
drain hose to drain pipe.
1. Align the center of the pipes and sufficiently tighten
the flare nut by hand.
2. Tighten the flare nut with a wrench.
Outside diameter Torque
mm inch kgf.m(lbf-ft)
Ø6.35 1/4 1.8~2.5(13)
Ø9.52 3/8 3.4~4.2(30)
3. When extending the drain hose at the indoor unit,
install the drain pipe.
Indoor unit tubing Flare nut Pipes
Open-end wrench (fixed)
Flare nut
Wrench
Indoor unit tubing
Drain hose
Indoor unit drain hose
Adhesive
Vinyl tape
Connection pipe
(narrow)
Service Manual 21
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