SIRAIR GS-CAS18ID-INV/1P Installation and operating instructions

Engineered for comfort
Round Flow
Cassette
Operation Manual & Installation
Thank you for purchasing our product, please keep and read this maual carefully before
you install.
Model
GS-CAS18ID-INV/1P
GS-CAS24ID-INV/1P
GS-CAS36ID-INV/1P
GS-CAS48ID-INV/1P
GS-CAS48ID-INV/3P
GS-CAS60ID-INV/3P

1.
Specification.................................................................................. 12
3. Dimension .................................................................................... 17
4.Service Space............................................................................... 19
5. Wiring Diagrams........................................................................... 20
6. Capacity Table.............................................................................. 23
7. Electric Characteristics................................................................. 26
8. Exploded View.............................................................................. 27
9. Accessories .................................................................................. 36
10. The Specification of Wiring......................................................... 37
11. Field Wiring................................................................................. 37
12. Trouble shooting......................................................................... 38
Technical Manual
Indoor Unit
Round Flow Cassette Type
Features.......................................................................................... 9
2.

1. Features
Round flow cassette
1.1 Round flow cassette
(1) Brand-new panel design. Indoor unit use uniform panel, simple and convenient.
(2) Simple, featly and voguish appearance suit for different requirements, it’s mostly used for
office, shopping center, restaurant, meeting room and etc.
18kBtu/h~60kBtu/h, standard type, 950mm*950mm
Technical Manual

(3) Ultra-thin body design, the min. height is only 230mm, save
installation space.
(4) 360 air flow, cold air can reach each corner of the room, providing a stable and comfortable
environment.
(5) 3 fan speed，meet for different requirement.
(6) New streamlined fan design.
(7) Occupied a small installation space, saving interior space
(8) Easy and convenient installation and maintenance, washable filter design.
Technical Manual

(9) Built-in water pump, water head up to 1200mm.
(10) Integrated electric control box, The E-box is safely covered by metal plate, for better
fire-resistance, save using.
(11) Add 4 interfaces in body, can be connected with duct to another room, fresh air makes
air quality more healthy and comfortable.
(12) Multi protection and auto-restart function.
(13) Low operation sound level: Well-known stable and quiet running fan motor.
Technical Manual

(14) Standard for wireless controller; option for wired controller.
Standard optional
(15) DC inverter motor, operate in ultra-low frequency and to precisely control the indoor
temperature.
2.1 Specification of round flow cassette
Model
GS-CAS18ID-INV/1P
GS-CAS24ID-INV/1P
Indoor power supply
V/Ph/Hz
220~240/1/50
220~240/1/50
Cooling
Capacity
KW
5.3
7.0
Power input
W
45
45
Current input
A
0.2
0.2
EER
W/W
3.1
3.1
Heating
Capacity
KW
5.3
7.0
Input
W
45
45
Rated current
A
0.2
0.2
COP
W/W
3.5
3.5
Max. power input
W
60
60
Max. current input
A
0.3
0.3
Indoor fan
motor
Model
YDK-35Q-8P3-1
YDK-45Q-6P3
Power output
W
35
45
Capacitor
μF
2.5
3
Speed
r/min
480/430/380
850/790/600
Indoor coil
Number of rows
2
2
Tube pitch(a) x row pitch(b)
mm
21×13.37
21×13.37
Fin spacing
mm
1.45
1.45
Fin type
Hydrophilic
Hydrophilic
Tube outside dia. and type
mm
Ф7
Ф7
inner grooved
inner grooved
Coil length x height x width
mm
2000×168×26.7
2000×168×26.7
Number of circuits
8
8
Indoor air flow (High speed)
m3/h
950
1250
Indoor
noise level
power level
dB(A)
35-40
32-42
pressure level
36/41/45
43/46/49
Indoor unit
Dimension (W*H*D)
Body(mm)
840×230×840
840×230×840
Panel(mm)
950×50×950
950×50×950
Packing (W*H*D)
Body(mm)
920×265×920
920×265×920
Panel(mm)
1030×100×1030
1030×100×1030
Net/Gross weight
Body(Kg)
25/30
25/30
Panel(Kg)
6.5/9.5
6.5/9.5
Technical Manual

Max pressure
MPa
4.2
4.2
Refrigerant type
R410A
R410A
Refrigerant
piping
Liquid side/Gas side
mm
Φ6.35/Φ12.7
Φ9.52/Φ15.88
Drainage pipe
mm
DN25
DN25
Standard controller
Standard for remote controller(wired controller for option)
Operation temp
°C
16～32
16～32
Ambient
temp
cooling
°C
-15～50
-15～50
heating
°C
-15～30
-15～30
Technical Manual

Model
GS-CAS36ID-INV/1P
GS-CAS48ID-INV/1P OR
GS-CAS48ID-INV/3P
Indoor power supply
V/Ph/Hz
220~240/1/50
220~240/1/50
Cooling
Capacity
KW
10.5
14
Power input
W
180
180
Current input
A
0.8
0.8
EER
W/W
2.6
2.5
Heating
Capacity
KW
10.5
10.5
Input
W
180
180
Rated current
A
0.8
0.8
COP
W/W
3.4
2.8
Max. power input
W
200
200
Max. current input
A
0.9
0.9
Indoor fan
motor
Model
YDK-75Q-6P3-1
YDK-75Q-6P3-1
Power output
W
75
75
Capacitor
μF
5
5
Speed
r/min
740/630/530
740/630/530
Indoor coil
Number of rows
2
2
Tube pitch(a) x row pitch(b)
mm
21×13.37
21×13.37
Fin spacing
mm
1.45
1.45
Fin type
Hydrophilic
Hydrophilic
Tube outside dia. and type
mm
Ф7
Ф7
inner grooved
inner grooved
Coil length x height x width
mm
2000×252×26.7
2000×252×26.74
Number of circuits
12
6
Indoor air flow (High speed)
m3/h
1600
2100
Indoor
noise level
power level
dB(A)
45-52
46-55
pressure level
43/45/48
43/45/48
Indoor unit
Dimension (W*H*D)
Body(mm)
840×285×840
840×285×840
Panel(mm)
950×50×950
950×50×950
Packing (W*H*D)
Body(mm)
920×310×920
920×310×920
Panel(mm)
1030×100×1030
1030×100×1030
Net/Gross weight
Body(Kg)
29/33.5
30.5/36
Panel(Kg)
6.5/9.5
6.5/9.5
Max pressure
MPa
4.2
4.2
Refrigerant type
R410A
R410A
Refrigerant
piping
Liquid side/Gas side
mm
Φ9.52/Φ15.88
Φ9.52/Φ15.88
Drainage pipe
mm
DN25
DN25
Standard controller
Standard for remote controller(wired controller for option)
Operation temp
°C
16～32
16～32
Ambient
temp
cooling
°C
-15～50
-15～50
heating
°C
-15～30
-15～30
Technical Manual

2.2 Specification of 4-way cassette
Model
GS-CAS60ID-INV/3P
Indoor power supply
V/Ph/Hz
220~240/1/50
Cooling
Capacity
KW
16
Power input
W
180
Current input
A
0.8
EER
W/W
2.91
Heating
Capacity
KW
17.6
Input
W
180
Rated current
A
0.8
COP
W/W
3.31
Max. power input
W
200
Max. current input
A
0.9
Indoor fan
motor
Model
YDK-75Q-6P3-1
Power output
W
110
Capacitor
μF
5
Speed
r/min
850/750/650
Indoor coil
Number of rows
3
Tube pitch(a) x row pitch(b)
mm
21×13.37
Fin spacing
mm
1.6
Fin type
Hydrophilic
Tube outside dia. and type
mm
Ф7
inner grooved
Coil length x height x width
mm
2000×252×40.1
Number of circuits
6
Indoor air flow (High speed)
m3/h
1900
Indoor
noise level
power level
dB(A)
45-52
pressure level
43/45/48
Indoor unit
Dimension (W*H*D)
Body(mm)
840×285×840
Panel(mm)
950×50×950
Packing (W*H*D)
Body(mm)
920×310×920
Panel(mm)
1030×100×1030
Net/Gross weight
Body(Kg)
29.5/35
Panel(Kg)
5.4/8.0
Max pressure
MPa
4.2
Refrigerant type
R410A
Refrigerant
piping
Liquid side/Gas side
mm
Φ9.52/Φ15.88
Drainage pipe
mm
DN25
Standard controller
Standard for remote controller
(wired controller for option)
Operation temp
°C
16～32
Ambient
temp
cooling
°C
-15～50
heating
°C
-15～30
Technical Manual

Technical Manual
Notes:
1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. piping: 5m (horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. piping: 5m (horizontal)
3. Actual noise level may differ, depending on the room structure, etc., since these noise values are from an
anechoic room.

3 Dimension
3.1 GS-CAS18ID-INV/1P, GS-CAS24ID-INV/1P
Technical Manual

3.2 GS-CAS36ID-INV/1P, GS-CAS48ID-INV/1P OR GS-CAS48ID-INV/3P,
GS-CAS60ID-INV/3P.
Technical Manual

4. Service Space
The indoor unit should be installed in a location that meets the following requirements:
4.1 There is enough interspace for installation and maintenance.
4.2 The ceiling is horizontal, and its structure can endure the weight of the indoor unit.
4.3 The outlet and the inlet are not impeded, and the influence of external air is the least.
4.4 The air flow can reach throughout the room.
4.5 The connecting pipe and drainpipe could be extracted out easily.
4.6 There is no direct radiation from heaters.
Model
Height (mm)
3.5kW,5.3kW
267
5.3kW, 7.0kW
230
10.5kW, 14kW, 16kW
285
Technical Manual

5. Wiring Diagrams
GS-CAS18ID-INV/1P, GS-CAS24ID-INV/1P
GS-CAS36ID-INV/1P,GS-CAS48ID-INV/1P OR GS-CAS48ID-INV/3P
Technical Manual

Technical Manual

GS-CAS60ID-INV/3P
Technical Manual

6.Capacity Table
Cooling
6.1 GS-CAS18ID-INV/1P
MODEL
GS-CAS18ID-INV/1P
COOLING
OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC
25
28ºC
32ºC
35ºC
42ºC
49 ºC
21ºC D
15ºC W
Total capacity kW
5.09
5.06
5.04
5.01
4.99
4.93
4.88
Input kW.
1.50
1.51
1.52
1.54
1.55
1.63
1.71
24ºC D
17ºC W
Total capacity kW
5.25
5.22
5.20
5.17
5.15
5.09
5.03
Input kW.
1.52
1.53
1.54
1.56
1.57
1.65
1.73
27ºC D
19ºC W
Total capacity kW
5.41
5.38
5.36
5.32
5.30
5.24
5.18
Input kW.
1.54
1.55
1.56
1.58
1.59
1.67
1.75
29ºC D
21ºC W
Total capacity kW
5.48
5.44
5.42
5.39
5.36
5.30
5.24
Input kW.
1.56
1.58
1.59
1.61
1.62
1.70
1.78
32ºC D
23ºC W
Total capacity kW
5.58
5.55
5.52
5.49
5.47
5.40
5.34
Input kW.
1.57
1.58
1.60
1.61
1.62
1.70
1.79
6.2 GS-CAS24ID-INV/1P
MODEL
GS-CAS24ID-INV/1P
COOLING
OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC
25
28ºC
32ºC
35ºC
42ºC
49 ºC
21ºC D
15ºC W
Total capacity kW
6.82
6.78
6.75
6.71
6.68
6.61
6.35
Input kW.
2.03
2.05
2.06
2.08
2.10
2.20
2.31
24ºC D
17ºC W
Total capacity kW
7.04
7.00
6.97
6.92
6.89
6.82
6.74
Input kW.
2.05
2.07
2.09
2.11
2.12
2.23
2.34
27ºC D
19ºC W
Total capacity kW
7.25
7.21
7.17
7.13
7.00
7.02
6.94
Input kW.
2.08
2.10
2.11
2.13
2.15
2.26
2.37
29ºC D
21ºC W
Total capacity kW
7.34
7.29
7.26
7.22
7.19
7.11
7.03
Input kW.
2.11
2.13
2.15
2.17
2.19
2.30
2.41
32ºC D
23ºC W
Total capacity kW
7.48
7.43
7.40
7.35
7.32
7.24
7.16
Input kW.
2.12
2.14
2.16
2.18
2.19
2.30
2.42
6.3 GS-CAS36ID-INV/1P
MODEL
GS-CAS36ID-INV/1P
COOLING
OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC
25
28ºC
32ºC
35ºC
42ºC
49 ºC
21ºC D
15ºC W
Total capacity kW
10.09
10.03
9.99
9.93
9.88
9.77
9.66
Input kW.
3.09
3.12
3.14
3.17
3.19
3.35
3.52
24ºC D
17ºC W
Total capacity kW
10.41
10.35
10.30
10.24
10.19
10.08
9.97
Input kW.
3.13
3.16
3.18
3.21
3.23
3.40
3.57
27ºC D
19ºC W
Total capacity kW
10.72
10.56
10.61
10.55
10.50
10.38
10.27
Input kW.
3.17
3.20
3.22
3.25
3.28
3.44
3.61
29ºC D
21ºC W
Total capacity kW
10.85
10.79
10.79
10.67
10.63
10.51
10.39
Input kW.
3.22
3.25
3.27
3.31
3.33
3.50
3.67
32ºC D
23ºC W
Total capacity kW
11.06
10.99
10.94
10.88
10.83
10.71
10.59
Input kW.
3.23
3.26
3.29
3.32
3.34
3.51
3.69
Technical Manual

6.4 GS-CAS48ID-INV/1P OR GS-CAS48ID-INV/3P
MODEL
GS-CAS48ID-INV/1P OR GS-CAS48ID-INV/3P
COOLING
OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC
25
28ºC
32ºC
35ºC
42ºC
49 ºC
21ºC D
15ºC W
Total capacity kW
13.45
13.37
13.31
13.23
13.18
13.02
12.89
Input kW.
4.58
4.62
4.65
4.71
4.74
4.98
5.23
24ºC D
17ºC W
Total capacity kW
13.87
13.79
13.74
13.66
13.60
13.45
13.29
Input kW.
4.65
4.68
4.71
4.77
4.80
5.04
5.29
27ºC D
19ºC W
Total capacity kW
14.29
14.21
14.16
14.05
14.00
13.84
13.68
Input kW.
4.71
4.74
4.77
4.83
4.86
5.10
5.35
29ºC D
21ºC W
Total capacity kW
14.48
14.37
14.32
14.24
14.16
14.00
13.84
Input kW.
4.77
4.83
4.86
4.92
4.95
5.20
5.44
32ºC D
23ºC W
Total capacity kW
14.74
14.66
14.58
14.50
14.45
14.26
14.11
Input kW.
4.80
4.83
4.89
4.92
4.95
5.20
5.47
6.5 GS-CAS60ID-INV/3P
MODEL
GS-CAS60ID-INV/3P
COOLING
OUTDOOR TEMPERATURE DRY
Indoor Conditions
21ºC
25
28ºC
32ºC
35ºC
42ºC
49 ºC
21ºC D
15ºC W
Total capacity kW
15.37
15.28
15.22
15.12
15.06
14.88
14.73
Input kW.
5.12
5.16
5.19
5.26
5.29
5.57
5.84
24ºC D
17ºC W
Total capacity kW
15.85
15.76
15.70
15.61
15.55
15.37
15.18
Input kW.
5.19
5.23
5.26
5.33
5.36
5.63
5.91
27ºC D
19ºC W
Total capacity kW
16.33
16.24
16.18
16.06
16.00
15.82
15.64
Input kW.
5.26
5.29
5.33
5.40
5.43
5.70
5.98
29ºC D
21ºC W
Total capacity kW
16.54
16.42
16.36
16.27
16.18
16.00
15.82
Input kW.
5.33
5.40
5.43
5.50
5.53
5.81
6.08
32ºC D
23ºC W
Total capacity kW
16.85
16.75
16.66
16.57
16.51
16.30
16.12
Input kW.
5.36
5.40
5.46
5.50
5.53
5.81
6.11
Heating
6.6 GS-CAS18ID-INV/1P
MODEL
GS-CAS18ID-INV/1P
HEATING
OUTDOOR CONDITIONS
Indoor Conditions
24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC DB
2ºC WB
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW
6.05
6.00
5.98
5.81
5.55
5.47
4.93
Input kW.
1.51
1.42
1.39
1.37
1.34
1.33
1.27
18ºC
Capacity kW
5.99
5.96
5.94
5.77
5.52
5.43
4.90
Input kW.
1.54
1.45
1.41
1.39
1.36
1.35
1.29
20ºC
Capacity kW
5.96
5.92
5.90
5.73
5.48
5.40
4.86
Input kW.
1.56
1.48
1.44
1.42
1.39
1.38
1.31
22ºC
Capacity kW
5.93
5.88
5.86
5.69
5.44
5.36
4.83
Input kW.
1.59
1.50
1.46
1.44
1.41
1.40
1.33
27ºC
Capacity kW
5.80
5.84
5.82
5.65
5.40
5.32
4.79
Input kW.
1.62
1.53
1.49
1.47
1.44
1.43
1.36
Technical Manual

6.7 GS-CAS24ID-INV/1P
MODEL
GS-CAS24ID-INV/1P
HEATING
OUTDOOR CONDITIONS
Indoor Conditions
24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC DB
2ºC WB
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW
7.95
7.83
7.81
7.58
7.25
7.14
6.34
Input kW.
2.10
2.05
2.00
1.97
1.93
1.91
1.81
18ºC
Capacity kW
7.90
7.78
7.75
7.53
7.20
7.09
6.30
Input kW.
2.13
2.09
2.03
2.00
1.96
1.95
1.84
20ºC
Capacity kW
7.86
7.73
7.70
7.47
7.15
7.04
6.25
Input kW.
2.19
2.13
2.07
2.04
2.00
1.98
1.88
22ºC
Capacity kW
7.82
7.67
7.65
7.42
7.10
6.99
6.21
Input kW.
2.23
2.16
2.10
2.07
2.03
2.02
1.91
27ºC
Capacity kW
7.73
7.62
7.59
7.37
7.05
6.94
6.16
Input kW.
2.28
2.20
2.14
2.11
2.07
2.05
1.94
6.8 GS-CAS36ID-INV/1P
MODEL
GS-CAS36ID-INV/1P
HEATING
OUTDOOR CONDITIONS
Indoor Conditions
24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC DB
2ºC WB
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW
12.11
11.70
11.66
11.32
10.83
10.67
9.61
Input kW.
3.24
3.17
3.08
3.04
2.97
2.95
2.81
18ºC
Capacity kW
12.08
11.62
11.58
11.24
10.75
10.59
9.54
Input kW.
3.28
3.22
3.13
3.09
3.03
3.00
2.86
20ºC
Capacity kW
12.04
11.54
11.50
11.16
10.68
10.52
9.48
Input kW.
3.33
3.28
3.19
3.14
3.08
3.06
2.91
22ºC
Capacity kW
12.00
11.46
11.42
11.09
10.60
10.44
9.41
Input kW.
3.39
3.33
3.24
3.20
3.13
3.11
2.96
27ºC
Capacity kW
11.73
11.38
11.34
11.01
10.53
10.37
9.35
Input kW.
3.48
3.40
3.30
3.26
3.19
3.17
3.02
6.9 GS-CAS48ID-INV/1P OR GS-CAS48ID-INV/3P
MODEL
GS-CAS48ID-INV/1P OR GS-CAS48ID-INV/3P
HEATING
OUTDOOR CONDITIONS
Indoor Conditions
24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC DB
2ºC WB
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW
15.59
15.46
15.41
14.97
14.30
14.09
12.70
Input kW.
4.44
4.17
4.08
4.02
3.94
3.91
3.73
18ºC
Capacity kW
15.43
15.35
15.30
14.87
14.22
13.99
12.62
Input kW.
4.52
4.26
4.14
4.08
4.00
3.97
3.79
20ºC
Capacity kW
15.35
15.25
15.20
14.76
14.12
13.91
12.52
Input kW.
4.58
4.35
4.23
4.17
4.08
4.05
3.85
22ºC
Capacity kW
15.28
15.15
15.10
14.66
14.01
13.81
12.44
Input kW.
4.67
4.41
4.29
4.23
4.14
4.11
3.91
27ºC
Capacity kW
14.94
15.05
14.99
14.56
13.91
13.71
12.34
Input kW.
4.76
4.49
4.38
4.32
4.23
4.20
4.00
Technical Manual

6.10 GS-CAS60ID-INV/3P
MODEL
GS-CAS60ID-INV/3P
HEATING
OUTDOOR CONDITIONS
Indoor Conditions
24ºC D
18ºC W
15ºC D
14ºC W
7ºC D
6ºC W
3ºC DB
2ºC WB
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-14ºC D
-15ºC W
15ºC
Capacity kW
18.05
17.90
17.84
17.33
16.56
16.32
14.71
Input kW.
5.20
4.89
4.79
4.72
4.62
4.58
4.37
18ºC
Capacity kW
17.87
17.78
17.72
17.21
16.47
16.20
14.62
Input kW.
5.30
4.99
4.86
4.79
4.68
4.65
4.44
20ºC
Capacity kW
17.78
17.66
17.60
17.09
16.35
16.11
14.50
Input kW.
5.37
5.10
4.96
4.89
4.79
4.75
4.51
22ºC
Capacity kW
17.69
17.54
17.48
16.97
16.23
15.99
14.41
Input kW.
5.48
5.17
5.03
4.96
4.86
4.82
4.58
27ºC
Capacity kW
17.30
17.42
17.36
16.85
16.11
15.87
14.29
Input kW.
5.58
5.27
5.13
5.06
4.96
4.93
4.68
7. Electric Characteristics
Model
Indoor Units
Indoor Fan Motor
Hz
Voltage
Min.
Max.
W
GS-CAS18ID-
INV/1P
50
220-240V
198V
254V
35
GS-CAS24ID-
INV/1P
50
220-240V
198V
254V
45
GS-CAS36ID-
INV/1P
50
220-240V
198V
254V
75
GS-CAS48ID-
INV/1P OR GS-
CAS48ID-INV/3P
50
220-240V
198V
254V
75
GS-CAS60ID-
INV/3P
50
220-240V
198V
254V
75
Technical Manual