Haier HCFU-18CF03 User manual

Commercial Air Conditioning
SERVICE MANUAL
zFeatures
zLong distribution pipe and high drop
zAuto-check function
zFlexible and easy installation
zFresh air hole, more natural, more healthy
zInfrared remote controller & wired controller
ƽOptional safety devices and much more precision control device
Manual code: SYJS-010-06REV.1Edition: 2006-07-21
HCFU-18CF03
HCFU-28CF03
Model
HCFU-18HF03
HCFU-28HF03

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
2
CONTENTS
Contents………………………………………………………....2
1. Description of products & features………………………...3
2. Specification………………………………………………….5
3. Safety precaution…………………………………………...10
4. Net dimension of indoor and outdoor……………………..12
5. Installation instructions………..……………………………14
6. Parts and functions………………………………………….31
7. Remote controller functions………………………………..33
8. Refrigerant diagram………………………………………...57
9. Electrical control functions…………………………………60
10. Diagnostic information (trouble shooting)……………….66
11. Electrical data………………………………………………70
12. Noise curves..................................................................87

1.DESCRIPTION OF PRODUCTS & FEATURES
1.1. Products code explanation
HCFU---18 H F 03
Applicable voltage: 03 stands for 200-220V/50Hz
Design number
Product type: H stands for heat pump type, C stands for cool
only type, E stands for electric heating type
Cooling / Heating capacity,18=18000BTU/h
Product type : “B” stands for cassette type, “CF” stands for
convertible type, ”D” stands for duct, “P” stands for cabinet
type, ”Q” stands for chiller system, "E" stands for ceiling
concealed type, “U” stands for outdoor unit
Haier
1.2 Brief Introduction for T1
ǃ
T2
ǃ
T3 working condition
1.3 Operating Range of Air Conditioners
Temp. Mode Rated Maximum Minimum
DB ć27 32 18
Indoor
WB ć19 23 14
DB ć35 43 10
Cooling
Outdoor
WB ć24 26 6
DB ć20 27 15
Indoor
WB ć14.5 --- --
DB ć724 -7
Heating
Outdoor
WB ć6 18 ---
Climate type
Type of Air
Conditioner T1 T2 T3
Cooling Only 18 ć~43ć10ć~35ć21ć~52ć
Heat pump -7ć~43ć-7ć~35ć-7ć~52ć
Electricity Heating ~43ć~35ć~52ć
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
3

1.4Product features
1.4.1 Outdoor unit .
Flexible and easy installation
The outdoor can meet the higher request of installation. From the specifications, you will find for
each unit, how long and how high the piping will be, which will be convenient for design and installation.
Optional safety devices and much more precision control device
a. Ambient temperature sensor, coil temperature sensor and compressor temperature sensor
make the temperature control and defrosting control more precise.
b. High/low pressure switch can feel the discharging pipe pressure and suction pipe pressure on
time and precisely. If the pressure is too low or too high, it will stop the compressor to prevent it
being damaged for the sake of pressure.
c. 3 minutes delay protection for the compressor, the device can protect the compressor from
some damages and make the compressor have a long life.
Silent operation
New design of long piping length and large drop
1.4.2 Decent convertible indoor unit
Optional installation mode
The indoor unit can be installed on the floor or to the ceiling, it is determined by the host favor and
the room décor. It is more convenient to service and installation.
Silent operation
The convertible unit is equipped with a high efficient, smooth, multi-blade centrifugal fan, which
generates a powerful but gentle airflow to any corner in the room.
Space-saving design
An innovative fan and the ultra thin heat exchanger result in the ultra thin convertible unit. Fully
adjustable mounting brackets make it possible to install the unit enven in the tightest places. Less than
199mm (for HDU-18) of vertical direction are required for installation.
Large angle air supplying
I00º wide angle louvers and 70º wide angle blades design to make a precise control of the airflow,
it equably distributes the comfortable air to every coner of the room
Automatically control of airflow direction for fast temperature adjusting
Central control function, if connected with a central controller
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
4

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
5
Function coolin
g
heatin
g
Capacity BTU/h 16500 -----
Capacity kW 4.83 -----
Sensible heat ratio 70%
W2000 -----
W 2500 -----
EER or COP W/W 2.4 -----
Dehumidifying capacity 10ϋ³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section //
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock &/$66, &/$66,
Circuit breaker A
Max. operating pressure of heat side Mpa 2.8 2.8
Max. operating pressure of cold side Mpa 2.8 2.8
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Air sending angle
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
Fan
Heat exchanger
Fan
Dimension
Compressor
Capillary tube
Refrigerant
/
50/47/42
/
53
820
ROTARY
/
Axial*1
PH310X2CS-8/TOSHIBA
/
/
hard startup
Type of Four way valve /
/
Defrosting Automatic
/
MAX.Pi
p
in
g
len
g
th 15
Weight (Net / Shipping) 41/44
PIPING
1650
30
Pipe ij6.35
ij12.7
Flared
Between I.D &O.D MAX.Drop 5
910*340*710
2/
Heat exchanger
inner grooved/ij9.52
0.035
inner grooved/ij9.52
Outdoor unit
HCFU-18CF03(WHITE)
Weight (Net / Shipping) 30/36
Panel
Dimension 780*245*640
1090×655×199
Remote
item Model HCFU-18CF03
2.0
3G×2.5mm2
Total power input
Max. power input
Running /Max.Running current
centrifugal*2
9.5A/12.0A
40
Weight (Net / Shipping)
900
Dimension /
1150×750×300
3G×2.0mm2
25
0.04
Norminal condition: indoor temperature (cooling): 27 ćDB/19ćWB, indoor temperature (heating): 20 ćDB
Outdoor temperature(cooling): 35ćDB/24ćWB, outdoor temperature(heating): 7 ćDB/6ćWB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level.
The detailed method please refer to the following information:
1150/1000/820
1PHˈ220-230Vˈ50HZ
Indoor unit
HCFU-18CF03(WHITE)
Noise level (H-M-L)
Electricity Heater
2. SPECIFICATION

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
6
Function coolin
g
heatin
g
Capacity BTU/h 16500 18000
Capacity kW 4.83 5.275
Sensible heat ratio 70%
W2000 1800
W 2500 2400
EER or COP W/W 2.4 2.93
Dehumidifying capacity 10ϋ³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section //
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock &/$66, &/$66,
Circuit breaker A
Max. operating pressure of heat side Mpa 2.8 2.8
Max. operating pressure of cold side Mpa 2.8 2.8
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Air sending angle
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
Fan
Heat exchanger
Fan
Dimension
Compressor
Capillary tube
Refrigerant
/
50/47/42
/
53
820
ROTARY
/
Axial*1
SHW33TC4-U
/
/
SUNISO-4GSI
600±20 ml
hard startup
Type of Four way valve /
/
Defrosting Automatic
/
MAX.Pi
p
in
g
len
g
th 15
Weight (Net / Shipping) 41/44
PIPING
1650
30
Pipe ij6.35
ij12.7
Flared
Between I.D &O.D MAX.Drop 5
910*340*710
2/
Heat exchanger
inner grooved/ij9.52
0.035
inner grooved/ij9.52
Outdoor unit
HCFU-18HF03(WHITE)
Weight (Net / Shipping) 30/36
Panel
Dimension 780*245*640
1090×655×199
Remote
item Model HCFU-18HF03
2.0
3G×2.5mm2
Total power input
Max. power input
Running /Max.Running current
centrifugal*2
Cooling 9.5A/12.0A Heating 8.5/11.0
40
Weight (Net / Shipping)
900
Dimension /
1150×750×300
3×2.0mm2ˇ2×0.75mm2
25
0.04
Norminal condition: indoor temperature (cooling): 27 ćDB/19ćWB, indoor temperature (heating): 20 ćDB
Outdoor temperature(cooling): 35ćDB/24ćWB, outdoor temperature(heating): 7 ćDB/6ćWB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level. The detailed
method please refer to the following information:
1150/1000/820
1PHˈ220-230Vˈ50HZ
Indoor unit
HCFU-18HF03(WHITE)
Noise level (H-M-L)
Electricity Heater

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
7
Function coolin
g
heatin
g
Capacity BTU/h 24000 -----
Capacity kW 7.1 -----
Sensible heat ratio 70%
W2800 -----
W 3400 -----
EER or COP W/W 2.54 -----
Dehumidifying capacity 10ϋ³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section //
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock &/$66, &/$66,
Circuit breaker A
Max. operating pressure of heat side Mpa 2.8 2.8
Max. operating pressure of cold side Mpa 2.8 2.8
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Air sending angle
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
4G×0.75mm2
35
0.033
Norminal condition: indoor temperature (cooling): 27 ćDB/19ćWB, indoor temperature (heating): 20 ćDB
Outdoor temperature(cooling): 35ćDB/24ćWB, outdoor temperature(heating): 7 ćDB/6ćWB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level. The detailed
method please refer to the following information:
1300/1200/1000
1PHˈ220-230Vˈ50HZ
Indoor unit
HCFU-28CF03(WHITE)
Noise level (H-M-L)
Electricity Heater
13.0A/15.0A
40
Weight (Net / Shipping)
1300
Dimension /
1380×770×300
1320×715×235
Remote
item Model HCFU-28CF03
3.0
3G×4.0mm2
Total power input
Max. power input
Running /Max.Running current
centrifugal*2
0.08
inner grooved/ij9.52
Outdoor unit
HCFU-28CF03(WHITE)
Weight (Net / Shipping) 47/52
Panel
Dimension 862*310*730
1005*425*815
2/
Heat exchanger
inner grooved/ij9.52
PIPING
2550
65
Pipe ij9.52
ij15.88
Flared
Between I.D &O.D MAX.Drop 20
MAX.Pi
p
in
g
len
g
th 30
Weight (Net / Shipping) 60/63
Type of Four way valve /
/
Defrosting Automatic
/
/
Axial*1
THU33WC6-U
/
/
SUNISO-4GSI
1050±20
hard startup
Capillary tube
Refrigerant
/
51/49/47
/
61
1060
ROTARY
Fan
Heat exchanger
Fan
Dimension
Compressor

Function
Capacity BTU/h 24000 26000
Capacity kW 7.1 7.6
Sensible heat ratio 70%
W2850 2800
W 3500 3400
EER or COP W/W 2.54 2.7
Dehumidifying capacity 10ϋ³×m³/h
Power cable section
Signal cable section
Connecting cable section
Wired control cable for wired control unit section //
Power source N, V, Hz
A / A
Start Current A
Class of anti electric shock &/$66, &/$66,
Circuit breaker A
Max. operating pressure of heat side Mpa 2.8 2.8
Max. operating pressure of cold side Mpa 2.8 2.8
Unit model (color)
Type × Number
Speed(H-M-L) r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Total Area m²
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Air sending angle
Drainage pipe (material , I.D./O.D.) mm
Control type (Remote /wired /model)
Fresh air hole dimension mm
Outlet distribution hole dimension mm
kW
dB(A)
kg / kg
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
kg / kg
Unit model (color)
Model / Manufacture
Oil model
Oil type
Oil charging
Type
Protection type
Starting method
Type × Number
Speed r/min
Fan motor output power kW
Air-flow(H-M-L) m³/h
Type / Diameter mm
Row / Fin pitch
Temp. scope ć
External ˄L×W×H˅mm×mm×mm
Package ˄L×W×H˅mm×mm×mm
Drainage pipe (material , I.D./O.D.) mm
Refrigerant control method mm/mm
Volume of Accumulator L
Noise level dB(A)
material of reduce noise
crankcase heater power W
kg / kg
Type / Charge g
Recharge quantity g/m
Liquid mm
Gas mm
Connecting Method
m
m
6G×0.75mm2
35
0.033
Norminal condition: indoor temperature (cooling): 27 ćDB/19ćWB, indoor temperature (heating): 20 ćDB
Outdoor temperature(cooling): 35ćDB/24ćWB, outdoor temperature(heating): 7 ćDB/6ćWB
The noise level will be measured in the third octave band limited values, using a Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level. The detailed
method please refer to the following information:
1300/1200/1000
1PHˈ220-230Vˈ50HZ
Indoor unit
HCFU-28HF03(WHITE)
Noise level (H-M-L)
Electricity Heater
Cooling 13.5A/16.0A Heating13.0/15.0
40
Weight (Net / Shipping)
1300
Dimension /
1380×770×300
1320×715×235
Remote
item Model HCFU-28HF03
3.0
3G×4.0mm2
Total power input
Max. power input
Running /Max.Running current
centrifugal*2
0.08
inner grooved/ij9.52
Outdoor unit
HCFU-28HF03(WHITE)
Weight (Net / Shipping) 47/52
Panel
Dimension 862*310*730
1005*425*815
2/
Heat exchanger
inner grooved/ij9.52
PIPING
2600
65
Pipe ij9.52
ij15.88
Flared
Between I.D &O.D MAX.Drop 20
MAX.Pi
p
in
g
len
g
th 30
Weight (Net / Shipping) 60/63
Type of Four way valve /
/
Defrosting Automatic
/
/
Axial*1
THU33WC6-U
/
/
SUNISO-4GSI
1050±20
hard startup
Capillary tube
Refrigerant
/
51/49/47
/
61
1060
ROTARY
Fan
Heat exchanger
Fan
Dimension
Compressor
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
8
Function cooling heating

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
9
Note: Ĵis the real time
analyser position
outdoor unit:
1.air outlet from side: the noise level is the average sound pressure level measured from front, left, right directions.
2.air outlet from top: the noise level is the average sound pressure level measured from front, back, left, right directions.
measured point:
H ( height to the ground) = (h (unit height) + 1m) /2
and, it is 1m to each side.
Installation state: the unit should be placed on the flat floor or be mounted in horizontal direction.
Testing method:
mounting-on-ceiling unit:
1m
1m
h
1m
1m
1m
1m

3. Safety precaution of indoor and outdoor
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
10
Carefully read the following information in order to operate the airconditioner correctly.
Below are listed three kinds of Safety Cautions and Suggestions.
WARNING!
CAUTI N! Incorrect operations may result in injuries or machine damages; in some cases may
cause serious consequences.
Incorrect operations may result in severe consequences of death or serious injuries.
INSTRUCTI NS: hese information can ensure the correct operation of the machine.
Be sure to conform with the following important Safety Cautions.
The Safety Cautions should be at hand so that they can be checked at any time when needed.
If the conditioner is transferred to the new user, this manual should be as well transferred to the new user.
WARNING!
If any abnormal phenomena is found
(e. g.smell of firing), please cut off the
power supply immediately, and contact
the dealer to find out the handling
method.
Don't dismantle the outlet of the
outdoor unit.
he exposure of fan is very dangerous
whichmay harm human beings.
switch
off
In such case, to continue using the
conditioner will damage the conditioner,
and may cause electrical shock or fire
hazard.
Incorrect maintenance and repairment
may cause water leak, electrical shock
and fire hazard.
When need maintenance and repairment,
call dealer to handle it.
After a long time use of air-conditioner
the base should be checked for any
damages.
If the damaged base is not repaired, the
unit may fall down and cause accidents.

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
11
Air-conditioner can't be installed in
the environment with inflammable
gases because the inflammable gases
near to air-conditioner may cause fire
hazard.
Connect earthing wire.
Use discharge pipe correctly to ensure
efficient discharge.
Earthing wire should not be con-
nected to the gas pipe, water pipe,
lightning rod or phone line, in-correct
earthing may cause shock.
Incorrect pipe use may cause water
leaking.
Earthing
WARNING!
Installed electrical-leaking circuit
breaker.
It easily cause electrical shock without
circuit breaker.
Please let the dealer be responsible for
installing the conditioner.
Incorrect installation may cause water
leak, electrical shock and fire hazard.
Call the dealer to take measures to
prevent the refrigerant from leaking.
If conditioner is installed in a small
room be sure to take every measure in
order to prevent suffocation accident
even in case of refrigerant leakage.
When conditioner is deinstalled or
reinstalleddealer should be responsible
for them.
Incorrect installation may cause water
leaking, electrical shock and fire hazard.
No goods or nobody is permitted to
placed on or stand on outdoor unit.
he falling of goods and people may
cause accidents.
Don't operate the air-conditioner with
damp hands.
Otherwise will be shocked.
nly use correctly-typed fuse.
May not use wire or any other materials
replacing fuse, other-wise may cause
faults or fire accidents.

Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
12
4. Net dimension
4.1 HCFU-18
240
100
900
990
655
200
880
620
605
600
40 35 35 30
199
(mm)
`bc
c^^
`e^
`c
ef^
db^
o|,v} sx}x{w qv}zx{ty
o|,v} sx}x{w
ix~*}xu+*x|{ k|yv

4.2 HCFU-28
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
13
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a_^
dac
ab^
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fd`
ea^
o|,v} sx}x{w qv}zx{ty
o|,v} sx}x{w
ix~*}xu+*x|{ k|yv

14
5.1 Installation of indoor unit
S ANDARD PAR S
he following installation parts are furnished.
Use them as required.
1
2
3
4
1
2
4
1+1
No. Accessory parts Qty.
Remote controller
Battery
Wire clamp
Heat
insulation
sheathing
Screw cap
Remote
controller
bracket
5
61
1+1
INSTALLATI N PR CEDURE
PREPARING IND R UNIT INSTALLATI N
1. REM VE THE INTAKE GRILL
Install the room air conditioner as follows:
Open the intake grill and remove the
three or four or six screws.(Fig. 1)
When the directions are selected, drill a 7 cm dia. hole on the wall so
that the hole is tilted downward toward the outdoor for smooth water
flow. When the pipe is led out from the rear, make a hole in Fig.6, at
the position shown.
(Fig.3)
Drain hose (Left side) Drain hose (Right side)
Remark: The main unit can be wired before
the indoor unit is installed. Select
the most appropriate installation
order.
A. FL R C NS LE TYPE
(For series 36,42,52 no this type )
1. DRILLING F R PIPING
Select piping and drain directions.(Fig.2) (Series14,18,24)
he piping and drain can be made in three directions as shown below.
For series 28,36,42,52 can be made rear and down two directions.
he drain hose can be connected to either the left or right side.(Fig.3) For series 28,36,42,52.only right side.
down
Pipe connection requirement
Please refer to the specification to confirm the stop valve diameter and the permitted pipe drop and pipe length.
(Fig. 1)
For series 28,36,42,52 have not the power plug.
Machine screw
apping screw
apping screw
Intake grill
(Fig. 2)
rear
right
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
5 Installation Instructions

Select whether the drain hose will be connected to the left or right side.(for series 28,36,42,52 only the right side).(Fig.3) Insert the drain hose
into the drain pan, then secure the drain hose with a nylon fastener. (Fig.6)
2. INSTALLING DRAIN H SE
Be sure to arrange the drain hose correctly so that it is leveled lower than the drain hose connecting port of the indoor unit.
Do not install the unit drain hose side is too high. Height A should be less than 5 mm.(Fig.9)
Wrap the insulation (drain hose) around the drain hose connection.(Fig.7)
Arrange the drain hose
lower than this portion.
(Fig. 8) K N N
Drain hose
CAUTI N
Wall
10cm
6mm
Indoor unit outdoor unit
(Fig. 4)
For series 14,18,24 when installing set to wall, install
the accessory wall bracket at the position shown in
Fig.5,and mount the set to it.
(Fig. 5)
Wall bracket
Side of set
65.5cm
99cm
50cm 24.5cm
6.5cm
12.5cm 10cm
6.5cm
53cm
4.5cm
7cm hole
3.5cm hole
Drain pan
Drain hose
Nylon fastener
(Fig. 6) (Fig. 7)
Drain pan
Drain hose
Insulation
(Drain hose)
Drain hose
(Fig. 9)
A
Drain hose
A
B. UNDER CEILING TYPE
Using the installation template, drill holes for piping and anchor bolts(for holes).(Fig.10)
(Fig. 10)
Installation
template
Wall
Ceilling
Drilling position
for piping
Drilling position
for anchor bolt
For series 14,18,24
200mm
900mm
A
B
40 40
100mm
720mm
87.5mm
147mm 326mm 247mm
85
53
Series AB
28
36,42,52 1920 1840
12401320
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
15

Select piping and drain directions. For series 28,36,42,52.only rear side (Fig.11)
1. DRILLING F R PIPING
(Fig. 11)
Rear (Install the drain hose
in the direction.)
Right
(Fig. 12)
Insert the anchor bolts into the drilled holes, and drive the pins
completely into the anchor bolts with a hammer. (Fig. 13)
2. DRILLING H LES F R ANCH R B LTS AND INSTALLING THE ANCH R B LTS
When the directions are selected, drill 80mm and 50mm or 150mm dia. hole on the wall so that the hole is tilted
downward toward the outdoor for smooth water flow.
With a concrete drill, drill four 12.7 mm dia. Holes.(Fig.12)
Wall
6mm
60 to 70mm
12.7mm
(Fig. 13)
Install the drain hose at the rear; it should not be installed on the top or right side.
CAUTI N
3. INSTALLING BRACKETS
(Fig. 14)
Install the brackets with nuts, washers and spring washers.(Fig. 14)
4. INSTALLING IND R UNIT
Reset the hex bolts as shown in Fig.15.
68 16 21 28
381
232
26.5
26.5
2-R2.5
10
18
7.5
4-R5
68
16
21
28
381
232
26.5
26.5
2-R2.5
10
18
7.5
4-R5
Bracket (Right)
Bracket (Left)
For series 14,18,24
Spring washer
Special nut Bracket
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
16

Hex bolt
8 to 13mm
Indoor unit
(Fig. 15)
Apply the indoor unit to the brackets.(Fig.16)
Now, securely tighten the hex bolts in both sides.
(Fig. 16)
Bolt Bracket
Indoor unit
5. INSTALL THE DRAIN H SE
Select whether the drain hose will be connected to the left or right side.(Fig.3)
Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener.(Fig.6)
Wrap the insulation (drain hose)around the drain hose connection.(Fig.7)
Be sure to arrange the drain hose correctly so that it is leveled lower than the drain hose connecting port of the
indoor unit.(Fig.8)
When drain hose is arranged backward. Secure the drain hose with the V wire. (Fig. 18)
For series 28,36,42,52
Drain hose
V wire hole
Piping hole
(Fig. 18)
V wire
Drain hose
For series 28,36,42,52
no this part
Piping hole
Base (Bottom)
Intake grill
V wire hole
Pass the drain hose through here
For series 14,18,24
Cut the grill
(Fig. 17)
OK
Remove the hole cover.
Arrange the drain hose
lower than this portion
Drain hose
NO
GAS LEAKAGE INSPECTI N
After connecting the piping, check the joints for gas leakage with leakage detector.
CAUTI N
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
17

18
H W T C NNECT WIRING T THE TERMINALS
A. For solid core wiring (or F-cable)(Fig.19A)
(1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 25mm of the exposed solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal board.
(3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a screw driver.
B. For strand wiring(Fig.19B)
(1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 10mm of the exposed strand wiring.
(2) Using a screwdriver, remove the terminal screw(s)on the terminal board.
(3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the terminal screw using a screw driver.
After passing the connection cord and power cable through the insulation tube, fasten it with the cord clamp, as shown in Fig.20
H W T FIXED C NNECTI N C RD AND P WER CABLE AT THE C RD CLAMP
(Fig. 19)
Insulation
Strip 25mm
Loop
Strip 10mm
Round
terminal
A. Solid wire B. Strand wire
Screw with
special washer
Round
terminal
Wire
erminal
board
Screw with
special washer
Round
terminal
Wire
(Fig. 20)
Insulation tube
Cord clamp
Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube.
ELECTRICAL WIRING
CAUTI N
(1) Match the terminal block numbers and connection cord colors with those of the
outdoor unit.
Erroneous wiring may cause burning of the electric parts.
(2) Connect the connection cords firmly to the terminal block. Imperfect installation
may cause a fire.
(3) Always fasten the outside covering of the connection cord with the cord clamp.
(If the insulator is chafed, electric leakage may occur.)
(4) Always connect the ground wire.
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03

1. IND R UNIT SIDE
(1) Remove the electric component box.
(Fig. 21)
Electric component box
(2) Pull out the electric component box.
(3) Remove the electric component box cover.
CAUTI N
Be careful not to pinch the lead
wires between the electric
component box and base.
(Fig. 22)
Electric component box
Remove the four tapping screws.
CAUTI N
Do not remove the screws. If the
screws are removed, the electric
component box will fall.
(Fig. 23)
Electric component box
(Fig. 24)
Base
Electric component box cover
Remove the three tapping screws.
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03
19

WARNING
(1) Remove the cord clamp.
(2) Process the end of the connection cords to the dimensions.
(3) Connect the end of the connection cord fully into theterminal block.
(4) Wiring
(4) Fasten the connection cord with a cord clamp.
(5) Fasten the end of the connection cord with the screw.
(6) For series 24,28,36,42, 52,the power cable and connecting cable are self-provided.
ELECTRICAL WIRING
(1) Always use a special branch circuit and install a special receptacle to supply power to the
room air conditioner.
(2) Use a circuit breaker and receptacle matched to the capacity of the room air conditioner.
(3) The circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all
the poles of the wiring and has an isolation distance of at least 3mm between each pole.
(4) Perform wiring work in accordance with standards so that the room air conditioner can be
operated safely and positively.
(5) Install a leakage circuit breaker in accordance with the related laws and regulations and
electric company standards.
CUST MER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and other remote
control unit operations.
(2) Air filter removal and cleaning, and how to use air louvers.
(3) Give the operating and installation manuals to the customer.
TEST RUNNING
1. CHECK ITEMS
(1) IND R UNIT
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do not air flow direction louvers operate normally?
(4) Is the drain normal?
(2) UTD R UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
(1) The power source capacity must be the sum of the room air conditioner current and the current
of other electrical appliances. When the current contracted capacity is insufficient, change the
contracted capacity.
(2) When the voltage is low and the air conditioner is difficult to start, contact the power company
the voltage raised.
CAUTI N
Commercial Air Conditioner Model: HCFU-18/28CF03
HCFU-18/28HF03