Cooper & Hunter FGR20/C-M User manual

Duct Type Split Air Conditioner
Service Manual
ooper&Hunter International Corporation
(USA)

1
CONTENTS
PRODUCT.......................................................................................................................................2
1 MODELS LIST....................................................................................................................2
2 NOMENCLATURE.............................................................................................................2
3 FUNCTION ..........................................................................................................................3
4 PRODUCT DATA ................................................................................................................4
4.1 Product Data at Rated Condition.................................................................................4
4.2 Operation Range........................................................................................................ 11
5 PIPING DIAGRAM...........................................................................................................12
5.1 Cooling Only.............................................................................................................12
5.2 Heat Pump.................................................................................................................13
CONTROL ....................................................................................................................................16
1 OPERATION FLOWCHART ..........................................................................................16
1.1 Cooling/Dry Operation..............................................................................................16
1.2 Heating Operation .....................................................................................................17
2 MAIN LOGIC....................................................................................................................17
2.1 Cooling......................................................................................................................18
2.2 Dry Mode ..................................................................................................................18
2.3 Heating Mode............................................................................................................19
2.4 Defrosting..................................................................................................................20
2.5 Fan Mode ..................................................................................................................20
3 WIRELESS REMOTE CONTROLLER.........................................................................20
3.1 Operation View .........................................................................................................20
3.2 Display View .............................................................................................................22
4 WIRED REMOTE CONTROLLER................................................................................24
4.1 Operation View .........................................................................................................24
4.2 Display View .............................................................................................................25
4.3 Dimension .................................................................................................................26
4.4 Installation.................................................................................................................26
5 CENTRALIZED CONTROLLER...................................................................................28
5.1 Centralized Controller-not with week timer..............................................................28
5.2 Centralized Controller-week timer............................................................................29
5.3 Field Setting ..............................................................................................................32
5.4 Control Wiring Design ..............................................................................................33
INSTALLATION...........................................................................................................................35
1 INDOOR UNIT INSTALLATION ...................................................................................35
1.1 Before Installation.....................................................................................................35
1.2 Installation Site..........................................................................................................35
1.3 Dimension Data.........................................................................................................35
1.4 Installation Clearance Data .......................................................................................36
1.5 Drain Piping Work ....................................................................................................37
2 OUTDOOR UNIT INSTALLATION...............................................................................37

2
2.1 Before Installation.....................................................................................................37
2.2 Installation Site..........................................................................................................37
2.3 Dimension Data.........................................................................................................38
2.4 Installation Clearance Data .......................................................................................39
3 REFRIGERATION PIPING WORK...............................................................................39
3.1 Refrigeration Piping Work Procedures......................................................................39
3.2 Cautions for Connecting Pipes..................................................................................40
3.3 Specification of Connection Pipe..............................................................................40
4 ELECTRIC WIRING WORK..........................................................................................41
4.1 Wiring Principle ........................................................................................................41
4.2 Electric Wiring Design..............................................................................................41
4.3 Specification of Power Supply Wire and Air Switch ................................................43
MAINTENANCE..........................................................................................................................45
1 TROUBLE TABLE............................................................................................................45
2FLOW CHART OF TROUBLESHOOTING.............................................................47
2.1 E1 Compressor High Pressure Protection .................................................................47
2.2 E3 Compressor Low Pressure Protection..................................................................48
2.3 E4 Compressor Discharge Temp. Protection.............................................................49
2.4 E5 Overcurrent Protection (Compressor Overloading Protection)............................49
2.5 E6 Communication Error ..........................................................................................50
2.6 E8 Overload of Indoor Fan........................................................................................51
2.7 F0 Failure of Indoor Room Sensor at Air Intake.......................................................51
2.8 F1 Failure of Evaporator Temp. Sensor ....................................................................52
2.9 F2 Temperature Sensor Error of Condenser..............................................................52
3WIRING DIADRAM....................................................................................................53
4DISASSEMBLYAND ASSEMBLY PROCEDURE OF MAIN PARTS...................60
5EXPLODED VIEWS AND PART LIST......................................................................63

COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
1
PRODUCT

DUCTTYPESPLITAIRCONDITIONER PRODUCT
2
PRODUCT
1 MODELS LIST
Capacity
（kW/Ton）Appearance
Units
Series Model Name
Cooling Heating
Re
f Outdoor Indoor
FGR20/C-M 19.5/5.5 22.5/6.4
FG20/C-M 19.5/5.5 /
R2
2
FGR25/C-M 24.5/6.9 27.5/7.8
FG25/C-M 24.5/6.9 /
R2
2
FGR30/C-M 29.5/8.4 32.5/9.3
FG30/C-M 29.5/8.4 /
R2
2
FGR40/C-M 38/10.8 41/11.7
Duct Type
FG40/C-M 38/10.8 /
R2
2
Note:1Ton =12000Btu/h = 3.517kW
2 NOMENCLATURE
FG
Supplementation code
Control method
Frequency conversion system
Static pressure type
Cooling capacity
Product type
Air-duct air supply

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
3
Meaning of standard model before“/”
Meaning Expression method
FG Air-duct air supply
Cooling only type-omitted
Heat pump auxiliary electric heat type-R
Unit type
Auxiliary hot water plate and pipe type-W
Cooling capacity Nominal cooling capacity (kW)
Common type-omitted
High static pressure-H
Static pressure type
The outdoor unit is not expressed.
Fixed frequency-omittedFrequency conversion system
Frequency conversion-P
Routine -omittedControl method
Remote monitoring-Y
Meaning of supplementation code after “/”
Meaning Expression method
Design No. Arranged based on A, B, C…
R22-omitted
R407-N
R410a-Na
Refrigerant
Others to be applied for when they are used
Production method Self-control-omitted
380V 3Ph～,50Hz -MPower type
(The unit to be exported must be expressed)
Outdoor unit-（O）
Indoor unit-（I）
Indoor and outdoor unit code
The entire unit is not expressed.
3 FUNCTION
Features-outdoor units
Features Description
Quality
condenser coil
The coil is constructed of golden aluminum sheet and inner groove copper
pipe
Coil protected Coils are protected from damage by a metal grill
Protected
compressor
High/low pressure protection, discharge high temperature protection, overload
protection, reverse (open) phase protection, sensor malfunction alarm
Resisting
corrosion
Cabinet is made of pre-painted steel. The pre-treated flat galvanized steel
provides a better paint to steel bond, which resists corrosion and rust creep.
Special primer formulas ensure minimal fading when exposed to sunlight
Low operating Low noise fan and low noise compressor with isolator

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
4
sound level
Low
maintenance
Quality compressor and motor are used
Factory tested All units are factory tested prior to dispatch to verify system operation and
control functioning before shipment
Features-indoor units
features Description
Flexible
installation
Condensing water tube and refrigerant tube are in same direction, it’s better
for installation
Long-distance
duct air supply
It adopts high static pressure design, so air is centralized handling in the
indoor unit and implant long-distance duct air supply
The capacity
range
The capacity range is 20kW to 40kW
Convenient
operation
Simple controller and intelligent remote controller make unit more
convenient operation
Good indoor air
quality
It can connect many supply-air outlet to the duct, so that it can make the
temperature and humidity of the whole room equality, meanwhile, it can lead
in fresh air, makes well indoor unit air quality. All units are provided with
filters that are easily accessible from the rear of the unit.
Microcomputer
control
The controls provide for compressor delay protection, Remote control
function, temperature setting, fan function, sleep function, memory function,
self-diagnosis with alarm function.
Quality evaporator Evaporator coils are constructed of inner groove copper tube and hydrophilic
aluminum sheet
Low operating
sound
The fan motors are resilient mounted to minimize vibration and noise
4 PRODUCT DATA
4.1 Product Data at Rated Condition
FGR/C-M(I)Indoor
Unit 20 25 30
FGR/C-M(O)
Models
Outdoor
Unit 20 25 30
Btu/h 66537 83598 100658
Cooling
kW 19.5 24.5 29.5
Btu/h 76773 93834 110895
Nominal Capacity
At Rated ESP
Heating
kW 22.5 27.5 32.5
Power Supply V/Ph/Hz 380/3/50
Cooling 8.5 10.2 12.1
Power Consumption
Heating
kW
6.8 9 10.1
Running Current Cooling A 15.8 18.9 21.8

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
5
Heating 12.5 16.8 19.2
Refrigerant Type R22
Refrigerant Charge kg 7 7 8.5
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
CFM 2354 2825 3237
Air flow
m3/h 4000 4800 5500
Input Power W 1500 1500 1500
Running Current A 3.2 3.4 3.6
in.wg 0.36 0.44 0.52
Rated ESP
Pa 90 110 130
Fan Motor Protection －Overload protection
Fan
Sound Pressure Level
(H/M/L/SL) dB(A) 54 54 57
Material －Inner Groove Copper Tube
Tube
Diameter mm 9.52 7.94 9.52
Material －Aluminum
Coil
Fin
No.of Rows/FPI －2/16 3/16 4/16
Coil Area Sqm 0.66 0.63 0.66
Height 500/673 500/673 500/673
Width 1500/1840 1500/1840 1500/1840
Dimensions
(Outline/Package)
Depth
mm
1000/1200 1000/1200 1000/1200
Weight(Net/Gross) kg 150/200 150/200 150/200
System Operation Control －Wired Control with LED Display + Wireless Controller
Condensate Drainage(O.D) mm 25.4
Indoor Unit
Air Filter －Standard Washable Synthetic
FGR/C-M(I)
Indoor
Unit 20 25 30
FGR/C-M(O)
Models Outdoor
Unit 20 25 30
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 12.21 15.27 15.5
L.R.A A 98 142 111
Vibration Isolator Rubber
Compressor
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 850 850 660
Blade Material Plastic
Fan
Diameter mm 524 524 750
Outdoor Unit
Coil Tube Material Inner Groove Copper Tube

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
6
Material Aluminum
Fin No.of Rows/FPI 2/15 2/15 2/14
Coil Area Sqm 1.22 1.49 2.08
Sound Pressure Level dB(A) 66 66 67
Height 1350/1460 1600/1715 1772/1950
Width 1150/1305 1150/1305 990/1162
Dimension
(Outline/Package) Depth
mm
360/502 360/502 880/980
Weight(Net/Gross) kg 180/195 185/200 250/280
Suction Φ28
Pipe sizes Liquid mm Φ16
FG/C-M(I)Indoor
Unit 20 25 30
FG/C-M(O)
Models
Outdoor
Unit 20 25 30
Btu/h 66537 83597 100658
Cooling
kW 19.5 24.5 29.5
Btu/h / / /
Nominal Capacity
At Rated ESP
Heating
kW / / /
Power Supply V/Ph/Hz 380/3/50
Cooling 8.5 10.2 12.1
Power Consumption
Heating
kW
/ / /
Cooling 15.8 18.9 21.8
Running Current
Heating
A
/ / /
Refrigerant Type R22
Refrigerant Charge kg 7 6.6 10
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
CFM 2354 2825 3237
Air flow
m3/h 4000 4800 5500
Input Power W 1500 1500 1500
Running Current A 3.2 3.4 3.6
in.wg 0.36 0.44 0.52
Rated ESP
Pa 90 110 130
Fan Motor Protection －Overload protection
Fan
Sound Pressure Level
(H/M/L/SL) dB(A) 54 54 57
Material －Inner Groove Copper Tube
Tube
Diameter mm 9.52 7.94 9.52
Material －Aluminum
Indoor Unit
Coil
Fin
No.of Rows/FPI －2/16 3/16 4/16

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
7
Coil Area Sqm 0.66 0.63 0.66
Height 500/673 500/673 500/673
Width 1500/1840 1500/1840 1500/1840
Dimensions
(Outline/Package)
Depth
mm
1000/1200 1000/1200 1000/1200
Weight(Net/Gross) kg 150/200 150/200 150/200
System Operation Control －Wired Control with LED Display + Wireless Controller
Condensate Drainage(O.D) mm 25.4
Air Filter －Standard Washable Synthetic
FG/C-M(I)Indoor
Unit 20 25 30
FG/C-M(O)
Models
Outdoor
Unit 20 25 30
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 12.21 15.27 15.5
L.R.A
A
98 142 111
Vibration Isolator Rubber
Compressor
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 850 850 660
Blade Material Plastic
Fan
Diameter mm 524 524 750
Tube Material Inner Groove Copper Tube
Material Aluminum
Coil Fin
No.of Rows/FPI 2/15 2/15 2/14
Coil Area Sqm 1.22 1.49 2.08
Sound Pressure Level dB(A) 66 66 67
Height 1350/1460 1600/1715 1772/1950
Width 1150/1305 1150/1305 990/1162
Dimension
(Outline/Package)
Depth
mm
360/502 360/502 880/980
Weight(Net/Gross) kg 180/195 185/200 250/280
Suction Φ28
Outdoor Unit
Pipe sizes
Liquid
mm
Φ16

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
8
FGR/C-M(I)Indoor
Unit 40
FGR/C-M(O)
Models
Outdoor
Unit 40
Btu/h 129675
Cooling
kW 38
Btu/h 139912
Nominal Capacity
At Rated ESP
Heating
kW 41
Power Supply V/Ph/Hz 380/3/50
Cooling 16
Power Consumption
Heating
kW
13.5
Cooling 30.5
Running Current
Heating
A
25.7
Refrigerant Type R22
Refrigerant Charge kg 11
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
CFM 4120
Air flow
m3/h 7000
Input Power kW 2.2
Running Current A 4.2
in.wg 0.60
Rated ESP
Pa 150
Fan Motor Protection －Overload protection
Fan
Sound Pressure Level
(H/M/L/SL) dB(A) 58
Material －Inner Groove Copper Tube
Tube
Diameter mm 9.52
Material －Aluminum
Coil
Fin
No.of Rows/FPI －3/16
Coil Area Sqm 0.86
Height 650/835
Width 1700/1890
Dimensions
(Outline/Package)
Depth
mm
1100/1460
Weight(Net/Gross) kg 215/265
System Operation Control －Wired Control with LED Display + Wireless
Controller
Condensate Drainage(O.D) mm 25.4
Indoor Unit
Air Filter －Standard Washable Synthetic

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
9
FGR/C-M(I)Indoor
Unit 40
FGR/C-M(O)
Models
Outdoor
Unit 40
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 20.2
L.R.A
A
140
Vibration Isolator Rubber
Compressor
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 730
Blade Material Plastic
Fan
Diameter mm 750
Tube Material Inner Groove Copper Tube
Material Aluminum
Coil Fin
No.of Rows/FPI 2/14
Coil Area Sqm 2.71
Sound Pressure Level dB(A) 69
Height 1772/1950
Width 1290/1370
Dimension
(Outline/Package)
Depth
mm
880/980
Weight(Net/Gross) kg 300/330
Suction Φ35
Outdoor Unit
Pipe sizes
Liquid
mm
Φ16

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
10
FG/C-M(I)Indoor
Unit 40
FG/C-M(O)
Models
Outdoor
Unit 40
Btu/h 129675
Cooling
kW 38
Btu/h /
Nominal Capacity
At Rated ESP
Heating
kW /
Power Supply V/Ph/Hz 380/3/50
Cooling 16
Power Consumption
Heating
kW
/
Cooling 30.5
Running Current
Heating
A
/
Refrigerant Type R22
Refrigerant Charge kg 11
Power Supply V/Ph/Hz 380/3/50
Type Centrifugal / Belt Drive
CFM 4120
Air flow
m3/h 7000
Input Power kW 2.2
Running Current A 4.2
in.wg 0.60
Rated ESP
Pa 150
Fan Motor Protection －Overload protection
Fan
Sound Pressure Level
(H/M/L/SL) dB(A) 58
Material －Inner Groove Copper Tube
Tube
Diameter mm 9.52
Material －Aluminum
Coil
Fin
No.of Rows/FPI －3/16
Coil Area Sqm 0.86
Height 650/835
Width 1700/1890
Dimensions
(Outline/Package)
Depth
mm
1100/1460
Weight(Net/Gross) kg 215/265
System Operation Control －Wired Control with LED Display + Wireless
Controller
Condensate Drainage(O.D) mm 25.4
Indoor Unit
Air Filter －Standard Washable Synthetic

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
11
FG/C-M(I)
Indoor
Unit 40
FG/C-M(O)
Models
Outdoor
Unit 40
Power Supply V/Ph/Hz 380/3/50
Compressor Type Scroll
Nominal Current 20.2
L.R.A
A
140
Vibration Isolator Rubber
Compressor
Protection Device Auto Reset Thermal Overload
Fan Type/Drive Inner Groove Copper Tube
Fan Speed rpm 730
Blade Material Plastic
Fan
Diameter mm 750
Tube Material Inner Groove Copper Tube
Material Aluminum
Coil Fin
No.of Rows/FPI 2/14
Coil Area Sqm 2.71
Sound Pressure Level dB(A) 69
Height 1772/1950
Width 1290/1370
Dimension
(Outline/Package)
Depth
mm
880/980
Weight(Net/Gross) kg 300/330
Suction Φ35
Outdoor Unit
Pipe sizes
Liquid
mm
Φ16
Note：
①Nominal capacities are based on the follow conditions.
Indoor Outdoor
Cooling DB：27℃(80.6℉)
WB：19℃(66.2℉)
DB：35℃(95℉)
WB：/℃(/℉)
Heating DB：20℃(68℉)
WB：/℃(/℉)
DB：7℃(44.6℉)
WB：6℃(42.8℉)
Piping Length 7.5m
4.2 Operation Range
Indoor unit dry / wet bulb Temp.（℃） Outdoor unit dry / wet bulb Temp（℃）
Max. Cooling 32/23 43/26

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
12
Min. Cooling 21/15 21/15
Max. Heating 27/- 24/18
Min. Heating 20/- -5/-6
5 PIPING DIAGRAM
5.1 Cooling Only
Name compressor 4-way
valve
Stop
Va l v e
Check
Va l v e Capillary Filter
Electronic
Expansion
Va l v e
Sign
Name
Temperature
Sensor
Pressure
Switch
Heat
Exchanger
with Axial
Flow Fan
Heat
Exchange
with Cross
Flow Blower
Heat Exchanger
with Centrifugal
Fan
Thermal
Expansion
Va l v e
Vapour
Liquid
Separator
Sign

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
13
5.2 Heat Pump

DUCT TYPE SPLIT AIR CONDITIONER PRODUCT
14
Note: FG（R）40/C-M has oil separator. The electric expansion valve is connected with the throttle capillary.

COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
15
CONTROL

COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
16
CONTROL
1 OPERATION FLOWCHART
1.1 Cooling/Dry Operation

COMMERCIAL AIR CONDITIONER DUCT TYPE SPLIT AIR CONDITIONER
17
1.2 Heating Operation
2 MAIN LOGIC