TECHNICAL MANUAL
for CHILLED WATER DUCTED
CWD HORIZONTAL FAN COILS
from MARSTAIR LTD.
This manual provides technical and installation information for CWD (401 series) CHILLED WATER HORIZONTAL fan coils.
INDEX
PAGE
GENERAL
Part numbers, unit features/accessories, weights
Optional control valves, air volumes
2
2
SELECTION
Performance data (CW and LPHW)
Coil water volumes
External resistance v. air volume and duty tables
Optional electric heating, sound pressure/power
3 - 10
11
11
12
ELECTRICAL
Electrical data, recommended fuses
12 - 13
UNIT
INSTALLATION
CWD
Pipework and electrical connections
Ductwork, maintenance, hydraulic resistances
13 - 14
15
15 - 16
WIRING
DIAGRAMS
CWD
17 - 18
OPERATION
CWD
19
COMPONENT
IDENTIFICATION
Exploded view of CWD with component Identification
20
Marstair Ltd.,
Armytage Road, Brighouse,
West Yorkshire. HD6 1QF, UK.
Tel: +44 (0) 1484 405600
Fax: +44 (0) 1484 405620
Email: sales@marstair.com
40100616-05
-1-
MARSTAIR LIMITED - CWD CHILLED WATER DUCTED HORIZONTAL FAN COILS
The CWD range consists of the 401 series of chilled water ducted horizontal fan coils.
CHILLED WATER CWD INDOOR UNITS
Models
Part Number
CWD 25
CWD 45
CWD 65
CWD 95
CWD 105
CWD 115
CWD 165
CWD 175
40100001
40100002
40100003
40100004
40100005
40100006
40100027
40100028
Refer to pages 13 and 14 for CWD dimensions and operating weights
FEATURES/ACCESSORIES
WEIGHTS
CWD
UNIT
PACKED
WEIGHT (kg)
UNPACKED
WEIGHT (kg)
21
Integral Discharge Plenum
STD
25
Long life washable filter (to G2)
STD
45
*
65
*/STD
95
Fresh Air Connection (despatched loose)
*
105
3 Speed Switch
*
115
Return Air Plenum
*
165
80
All Spigots
*
175
80
Control and Valve Options
*
Condensate pump
Electric or LPHW heating
Key: ** = factory fitted option only
These units are
p a c k e d
according to the
size of order. For
single units, add
approximately
1kg to the
unpacked weight.
31
41
42
54
55
STD = standard.
OPTIONAL CONTROL VALVES
A choice of 2 or 4 port valves is available: these are factory fitted and sited above the condensate tray to give the
following water flow arrangements.
AIR VOLUME (m3/s) based on 30 Pa external resistance
SPIGOTS
CWD
Minimum Speed
Med/Min
Medium Speed
Med/Max
230V
230V
230V
230V
Maximum Speed
230V
25
B
0.048
0.067
0.090
0.107
0.119
45
B&C
0.095
0.110
0.174
0.209
0.234
65
B&C
0.101
0.145
0.201
0.252
0.295
95
B, C & D
0.173
0.232
0.288
0.339
0.377
105
B, C & D
0.165
0.230
0.282
0.331
0.370
115
B, C & D
0.188
0.259
0.320
0.370
0.400
165
B, C & D
0.250
---
0.430
---
0.550
175
B, C & D
0.350
---
0.510
---
0.600
-2-
PERFORMANCE DATA (AT 30Pa EXTERNAL RESISTANCE, 230V.)
CWD 25 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.048 m3/s
Total
Sensible
1.31
0.91
0.88
0.68
0.71
0.60
0.60
0.56
0.63
0.57
0.52
0.52
0.46
0.46
0.48
0.48
0.42
0.42
0.36
0.36
1.20
0.85
0.95
0.74
0.83
0.68
0.96
0.74
0.75
0.65
0.64
0.60
0.70
0.63
0.57
0.57
0.51
0.51
1.53
1.01
1.30
0.91
1.09
0.81
1.30
0.90
1.03
0.79
0.89
0.73
1.05
0.80
0.81
0.70
0.69
0.65
1.54
1.12
1.32
1.02
1.11
0.93
1.31
1.02
1.06
0.91
0.91
0.85
1.07
0.91
0.82
0.81
0.76
0.76
Medium Speed
0.090 m3/s
Total
Sensible
2.07
1.50
1.40
1.13
0.95
0.93
0.84
0.84
1.01
0.96
0.78
0.78
0.68
0.68
0.77
0.77
0.63
0.63
0.52
0.52
1.91
1.40
1.51
1.23
1.10
1.05
1.52
1.23
1.04
1.03
0.91
0.91
1.11
1.06
0.86
0.86
0.76
0.76
2.43
1.66
2.08
1.50
1.61
1.30
2.05
1.49
1.67
1.33
1.16
1.13
1.65
1.32
1.23
1.16
0.99
0.99
2.45
1.85
2.10
1.70
1.65
1.51
2.07
1.69
1.70
1.53
1.31
1.31
1.67
1.52
1.36
1.36
1.14
1.14
Maximum Speed
0.119 m3/s
Total
Sensible
2.48
1.84
1.68
1.40
1.15
1.15
0.97
0.97
1.20
1.19
0.92
0.92
0.79
0.79
0.96
0.96
0.73
0.73
0.61
0.61
2.28
1.72
1.82
1.52
1.25
1.25
1.82
1.52
1.30
1.30
1.07
1.07
1.32
1.32
1.06
1.06
0.88
0.88
2.92
2.03
2.48
1.85
1.95
1.63
2.45
1.83
1.99
1.65
1.39
1.39
1.97
1.63
1.46
1.44
1.16
1.16
2.93
2.28
2.51
2.10
1.99
1.88
2.47
2.08
2.02
1.90
1.66
1.66
1.99
1.88
1.68
1.68
1.43
1.43
CWD 25 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.048 m3/s
Total
0.71
1.02
0.93
0.87
0.76
0.62
0.46
0.95
0.85
0.79
0.68
0.54
0.50
0.87
0.77
0.71
0.60
0.46
0.35
0.79
0.69
0.63
0.51
0.37
0.29
-3-
Medium Speed
0.090 m3/s
Total
1.01
1.44
1.32
1.22
1.08
0.88
0.70
1.33
1.21
1.11
0.97
0.77
0.57
1.23
1.10
1.01
0.86
0.66
0.44
1.12
0.99
0.90
0.75
0.55
0.37
Maximum Speed
0.119 m3/s
Total
1.16
1.66
1.52
1.41
1.25
1.02
0.82
1.54
1.40
1.28
1.13
0.89
0.68
1.42
1.27
1.16
1.00
0.77
0.52
1.29
1.15
1.04
0.87
0.64
0.40
CWD 45 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.095 m3/s
Total
Sensible
2.59
1.79
1.75
1.35
1.26
1.13
1.04
1.03
1.26
1.13
0.96
0.96
0.85
0.85
0.89
0.89
0.78
0.78
0.66
0.66
2.37
1.67
1.87
1.44
1.47
1.27
1.91
1.46
1.34
1.22
1.13
1.13
1.41
1.25
1.05
1.05
0.94
0.94
3.01
1.98
2.60
1.80
1.93
1.51
2.56
1.78
2.11
1.58
1.56
1.36
2.08
1.57
1.50
1.34
1.22
1.22
3.03
2.20
2.64
2.02
1.97
1.73
2.58
2.00
2.15
1.81
1.60
1.59
2.11
1.79
1.58
1.58
1.40
1.40
Medium Speed
0.174 m3/s
Total
Sensible
4.01
2.88
2.72
2.19
1.82
1.79
1.48
1.48
1.98
1.86
1.39
1.39
1.20
1.20
1.50
1.50
1.11
1.11
0.92
0.92
3.67
2.69
2.98
2.39
1.90
1.90
2.95
2.37
2.16
2.04
1.62
1.62
2.18
2.05
1.66
1.66
1.34
1.34
4.66
3.17
4.04
2.90
3.24
2.56
3.94
2.86
3.28
2.58
2.27
2.18
3.19
2.54
2.45
2.25
1.76
1.76
4.69
3.55
4.08
3.28
3.31
2.95
3.97
3.23
3.33
2.96
2.60
2.60
3.22
2.91
2.63
2.63
2.23
2.23
Maximum Speed
0.234 m3/s
Total
Sensible
4.82
3.58
3.29
2.73
2.31
2.30
1.72
1.72
2.38
2.33
1.82
1.82
1.39
1.39
1.89
1.89
1.29
1.29
1.06
1.06
4.43
3.34
3.61
2.98
2.47
2.47
3.54
2.96
2.63
2.58
1.89
1.89
2.60
2.57
2.13
2.13
1.56
1.56
5.61
3.92
4.87
3.60
3.93
3.22
4.73
3.55
3.94
3.22
2.85
2.80
3.81
3.17
2.93
2.83
2.33
2.33
5.64
4.40
4.91
4.09
4.00
3.71
4.76
4.02
3.99
3.70
3.29
3.29
3.84
3.65
3.29
3.29
2.85
2.85
CWD 45 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.095 m3/s
Total
1.43
2.01
1.89
1.72
1.59
1.28
1.12
3.02
1.74
1.58
1.44
1.14
0.97
1.72
1.60
1.43
1.30
0.99
0.81
1.58
1.45
1.29
1.15
0.84
0.64
-4-
Medium Speed
0.174 m3/s
Total
1.99
2.79
2.61
2.39
2.20
1.78
1.57
2.59
2.41
2.19
2.00
1.58
1.36
2.39
2.21
1.99
1.80
1.38
1.15
2.19
2.01
1.79
1.60
1.18
0.94
Maximum Speed
0.234 m3/s
Total
2.31
3.25
3.04
2.78
2.56
2.06
1.83
3.02
2.80
2.54
2.33
1.83
1.59
2.78
2.57
2.31
2.10
1.60
1.35
2.55
2.34
2.08
1.87
1.37
1.11
CWD 65 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.101 m3/s
Total
Sensible
3.06
2.06
2.06
1.55
1.56
1.32
1.32
1.21
1.46
1.27
1.15
1.14
1.01
1.01
1.04
1.04
0.92
0.92
0.79
0.79
2.78
1.92
2.09
1.60
1.84
1.49
2.26
1.68
1.67
1.42
1.41
1.32
1.68
1.43
1.24
1.24
1.11
1.11
3.52
2.28
3.08
2.07
2.40
1.77
3.01
2.04
2.51
1.82
1.96
1.59
2.46
1.80
1.78
1.52
1.52
1.42
3.54
2.52
3.12
2.32
2.44
2.02
3.03
2.28
2.56
2.07
2.01
1.84
2.49
2.04
1.82
1.77
1.65
1.65
Medium Speed
0.201 m3/s
Total
Sensible
5.27
3.66
3.60
2.78
2.55
2.30
1.90
1.90
2.67
2.35
1.78
1.78
1.55
1.55
1.91
1.91
1.43
1.43
1.19
1.19
4.80
3.40
4.01
3.05
2.50
2.41
3.90
2.99
2.99
2.61
2.08
2.08
2.93
2.58
2.08
2.08
1.72
1.72
6.05
4.01
5.35
3.69
4.43
3.29
5.16
3.61
4.40
3.28
3.25
2.82
4.21
3.20
3.36
2.86
2.25
2.25
6.09
4.47
5.41
4.15
4.52
3.76
5.20
4.06
4.47
3.74
3.41
3.30
4.26
3.65
3.45
3.32
2.82
2.82
Maximum Speed
0.295 m3/s
Total
Sensible
6.86
4.90
4.70
3.74
3.51
3.21
2.34
2.34
3.48
3.19
2.55
2.55
1.89
1.89
2.61
2.61
1.76
1.76
1.44
1.44
2.78
1.92
5.25
4.12
3.79
3.50
5.06
4.03
3.94
3.56
2.65
2.65
3.79
3.50
2.96
2.96
2.12
2.12
7.88
5.35
6.98
4.96
5.84
4.47
6.69
4.83
5.72
4.43
4.42
3.91
5.44
4.31
4.37
3.89
3.27
3.27
7.91
5.98
7.04
5.59
5.93
5.12
6.73
5.45
5.79
5.06
4.56
4.56
5.49
4.93
4.52
4.52
3.96
3.96
CWD 65 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.101 m3/s
Total
1.87
2.60
2.47
2.23
2.10
1.69
1.53
2.41
2.28
2.05
1.91
1.50
1.34
2.23
2.10
1.87
1.73
1.32
1.15
2.04
1.91
1.68
1.55
1.14
0.96
-5-
Medium Speed
0.201 m3/s
Total
2.76
3.84
3.63
3.30
3.09
2.48
2.27
3.57
3.36
3.03
2.82
2.21
2.00
3.29
3.09
2.75
2.55
1.94
1.72
3.02
2.82
2.48
2.28
1.68
1.44
Maximum Speed
0.295 m3/s
Total
3.38
4.71
4.45
4.05
3.78
3.04
2.77
4.38
4.12
3.71
3.45
2.71
2.44
4.05
3.79
3.38
3.12
2.38
2.11
3.71
3.46
3.05
2.79
2.06
1.78
CWD 95 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.173 m3/s
Total
Sensible
5.00
3.40
3.39
2.56
2.25
2.04
1.87
1.87
2.49
2.15
1.74
1.74
1.53
1.53
1.65
1.65
1.40
1.40
1.18
1.18
4.54
3.16
3.72
2.78
2.62
2.31
3.69
2.77
2.40
2.21
2.04
2.04
2.77
2.37
1.91
1.91
1.69
1.69
5.73
3.74
5.05
3.42
3.91
2.92
4.90
3.35
4.15
3.02
2.79
2.47
4.01
2.96
3.11
2.60
2.20
2.20
5.77
4.15
5.11
3.84
4.07
3.37
4.94
3.76
4.22
3.44
2.88
2.88
4.06
3.37
3.21
3.02
2.54
2.54
Medium Speed
0.288 m3/s
Total
Sensible
7.34
5.13
5.01
3.89
3.63
3.27
2.52
2.52
3.72
3.31
2.38
2.38
2.04
2.04
2.69
2.69
1.89
1.89
1.56
1.56
6.68
4.77
5.60
4.28
3.24
3.24
5.42
4.20
4.18
3.67
2.76
2.76
4.08
3.63
2.98
2.98
2.28
2.28
8.42
5.62
7.46
5.18
6.20
4.63
7.17
5.05
6.14
4.61
4.61
3.99
5.86
4.49
4.69
4.02
2.99
2.99
8.47
6.25
7.53
5.82
6.32
5.29
7.23
5.69
6.22
5.25
4.79
4.67
5.92
5.13
4.80
4.67
4.01
4.01
Maximum Speed
0.377 m3/s
Total
Sensible
8.80
6.28
6.03
4.79
4.50
4.11
2.90
2.90
4.47
4.09
3.25
3.25
2.34
2.34
3.34
3.34
2.18
2.18
1.78
1.78
8.02
5.85
6.75
5.28
4.84
4.47
6.50
5.17
5.07
4.56
3.18
3.18
4.87
4.48
3.78
3.78
2.62
2.62
10.10
6.86
8.97
6.36
7.50
5.73
8.58
6.19
7.36
5.67
5.68
5.00
6.99
5.52
5.62
4.98
4.17
4.17
10.15
7.66
9.04
7.16
7.63
6.56
8.64
6.99
7.45
6.48
5.84
5.84
7.05
6.32
5.79
5.79
5.07
5.07
CWD 95 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.173 m3/s
Total
2.86
3.98
3.78
3.42
3.22
2.59
2.39
3.69
3.50
3.14
2.94
2.31
2.11
3.41
3.22
2.86
2.67
2.04
1.83
3.13
2.94
2.58
2.39
1.76
1.54
-6-
Medium Speed
0.288 m3/s
Total
3.80
5.28
5.01
4.54
4.27
3.43
3.15
4.91
4.64
4.17
3.90
3.06
2.79
4.53
4.27
3.80
3.53
2.70
2.42
4.16
3.90
3.43
3.16
2.33
2.06
Maximum Speed
0.377 m3/s
Total
4.39
6.09
5.78
5.24
4.92
3.96
3.63
5.66
5.35
4.81
4.50
3.53
3.21
5.23
4.92
4.38
4.07
3.11
2.79
4.81
4.50
3.96
3.65
2.69
2.37
CWD 105 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.165 m3/s
Total
Sensible
5.32
3.55
3.62
2.68
2.62
2.21
2.22
2.03
2.70
2.24
1.94
1.91
1.70
1.70
1.76
1.76
1.55
1.55
1.32
1.32
4.80
3.29
4.01
2.92
3.08
2.50
3.94
2.88
2.80
2.38
2.38
2.21
3.00
2.47
2.09
2.09
1.88
1.88
6.02
3.88
5.41
3.59
4.00
2.97
5.18
3.48
4.48
3.17
3.29
2.67
4.27
3.08
3.41
2.72
2.56
2.39
6.05
4.29
5.47
4.01
4.31
3.49
5.21
3.89
4.56
3.59
3.38
3.09
4.32
3.49
3.53
3.15
2.78
2.78
Medium Speed
0.282 m3/s
Total
Sensible
8.21
5.59
5.63
4.24
4.24
3.61
2.90
2.90
4.25
3.61
2.72
2.72
2.36
2.36
2.93
2.93
2.18
2.18
1.81
1.81
7.42
5.19
6.37
4.70
3.90
3.63
6.08
4.57
4.87
4.04
3.17
3.17
4.65
3.94
3.24
3.24
2.63
2.63
9.31
6.10
8.39
5.67
7.14
5.12
7.98
5.49
6.97
5.05
5.47
4.42
6.57
4.87
5.44
4.41
3.43
3.43
9.36
6.77
8.47
6.35
7.29
5.82
8.04
6.15
7.08
5.73
5.69
5.14
6.64
5.54
5.57
5.09
4.38
4.38
Maximum Speed
0.370 m3/s
Total
Sensible
10.01
6.94
6.88
5.28
5.34
4.58
3.37
3.37
5.19
4.51
3.60
3.60
2.73
2.73
3.70
3.70
2.53
2.53
2.08
2.08
9.07
6.44
7.81
5.86
5.90
5.03
7.42
5.68
5.99
5.07
3.69
3.69
5.66
4.93
4.21
4.21
3.05
3.05
11.37
7.55
10.25
7.04
8.78
6.40
9.72
6.81
8.51
6.28
6.82
5.59
7.99
6.06
6.63
5.51
4.63
4.63
11.42
8.40
10.34
7.90
8.94
7.28
9.79
7.65
8.62
7.14
7.04
6.49
8.07
6.91
6.78
6.38
5.64
5.64
CWD 105 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.165 m3/s
Total
2.79
3.87
3.68
3.33
3.14
2.52
2.33
3.60
3.41
3.06
2.87
2.25
2.05
3.32
3.14
2.79
2.60
1.98
1.78
3.05
2.87
2.52
2.33
1.72
1.50
-7-
Medium Speed
0.282 m3/s
Total
3.76
5.22
4.96
4.49
4.22
3.39
3.12
4.85
4.59
4.12
3.86
3.03
2.76
4.48
4.22
3.76
3.49
2.67
2.39
4.12
3.86
3.39
3.13
2.31
2.03
Maximum Speed
0.370 m3/s
Total
4.34
6.04
5.73
5.19
4.88
3.92
3.60
5.61
5.30
4.77
4.45
3.50
3.18
5.18
4.88
4.34
4.03
3.08
2.76
4.76
4.46
3.92
3.61
2.66
2.34
CWD 115 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.188 m3/s
Total
Sensible
5.94
3.98
4.05
3.00
2.80
2.43
2.36
2.23
3.04
2.53
2.10
2.10
1.85
1.85
1.95
1.95
1.69
1.69
1.43
1.43
5.36
3.69
4.54
3.30
3.28
2.75
4.40
3.24
3.25
2.73
2.53
2.43
3.36
2.78
2.29
2.29
2.05
2.05
6.73
4.35
6.05
4.03
4.94
3.53
5.78
3.90
5.03
3.57
3.50
2.93
4.77
3.46
3.88
3.08
2.71
2.63
6.76
4.81
6.12
4.50
5.10
4.04
5.82
4.36
5.11
4.04
3.61
3.41
4.82
3.91
3.99
3.56
3.04
3.04
Medium Speed
0.320 m3/s
Total
Sensible
9.02
6.19
6.19
4.71
4.75
4.04
3.12
3.12
4.67
4.01
2.93
2.93
2.53
2.53
3.27
3.27
2.34
2.34
1.93
1.93
8.17
5.74
7.62
5.21
5.09
4.37
6.68
5.06
5.38
4.49
3.41
3.41
5.10
4.38
3.69
3.69
2.82
2.82
10.24
6.75
9.22
6.28
7.88
5.69
8.76
6.07
7.67
5.59
6.09
4.94
7.21
5.40
5.98
4.90
3.91
3.91
10.29
7.50
9.31
7.04
8.04
6.47
8.83
6.82
7.78
6.35
6.31
5.74
7.29
6.15
6.12
5.66
4.95
4.95
Maximum Speed
0.400 m3/s
Total
Sensible
10.57
7.36
7.27
5.62
5.67
4.89
3.52
3.52
5.48
4.80
3.89
3.89
2.84
2.84
3.94
3.94
2.64
2.64
2.16
2.16
9.58
6.84
8.25
6.23
6.30
5.38
7.83
6.04
6.33
5.40
4.06
4.06
5.97
5.24
4.50
4.50
3.18
3.18
12.00
8.01
10.82
7.48
9.28
6.80
10.25
7.22
8.98
6.68
7.22
5.96
8.42
6.45
7.00
5.87
4.99
4.99
12.06
8.92
10.92
8.40
9.45
7.75
10.33
8.13
9.10
7.60
7.45
6.91
8.41
7.35
7.15
6.80
6.02
6.02
CWD 115 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.188 m3/s
Total
3.00
4.17
3.97
3.59
3.38
2.72
2.50
3.88
3.67
3.30
3.09
2.42
2.21
3.58
3.38
3.00
2.80
2.13
1.92
3.29
3.09
2.71
2.51
1.85
1.62
-8-
Medium Speed
0.320 m3/s
Total
4.02
5.59
5.30
4.81
4.52
3.63
3.33
5.19
4.91
4.41
4.13
3.24
2.95
4.80
4.52
4.02
3.74
2.85
2.56
4.41
4.13
3.63
3.35
2.47
2.17
Maximum Speed
0.400 m3/s
Total
4.53
6.29
5.96
5.41
5.08
4.08
3.74
5.84
5.52
4.96
4.64
3.64
3.31
5.40
5.08
4.52
4.20
3.21
2.87
4.96
4.64
4.09
3.76
2.77
2.44
CWD 165 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.250 m3/s
Total
Sensible
8.65
5.68
5.96
4.31
4.62
3.67
3.66
3.24
4.62
3.67
3.21
3.04
2.74
2.74
3.04
2.97
2.49
2.49
2.14
2.14
7.7
5.24
6.91
4.84
5.03
3.98
6.44
4.62
5.43
4.16
3.94
3.52
5.05
3.99
3.45
3.32
3.03
3.03
9.62
6.15
8.92
5.81
7.86
5.31
8.33
5.53
7.56
5.18
6.17
4.57
6.96
4.91
6.07
4.53
4.24
3.79
9.66
6.78
9.01
6.46
8.03
6.00
8.38
6.16
7.66
5.83
6.46
5.29
7.02
5.54
6.21
5.18
4.45
4.45
Medium Speed
0.430 m3/s
Total
Sensible
13.41
9.00
9.27
6.86
7.70
6.12
4.67
4.67
7.17
5.87
5.03
4.93
3.80
3.80
4.87
4.86
3.50
3.50
2.91
2.91
12.04
8.32
10.76
7.70
8.86
6.85
9.98
7.35
8.53
6.70
5.09
5.09
7.79
6.38
6.02
5.64
4.23
4.23
14.96
9.73
13.83
9.20
12.32
8.50
12.90
8.77
11.68
8.22
9.96
7.48
10.74
7.81
9.37
7.24
7.23
6.38
15.04
10.78
13.97
10.26
12.55
9.61
12.99
9.81
11.84
9.29
10.26
8.60
10.85
8.85
9.57
8.31
7.67
7.53
Maximum Speed
0.550 m3/s
Total
Sensible
16.05
10.94
11.12
8.36
9.27
7.50
5.35
5.35
8.58
7.18
6.28
6.18
4.33
4.33
5.98
5.98
4.65
4.65
3.29
3.29
14.45
10.12
12.89
9.39
10.71
8.41
11.94
8.96
10.20
8.19
7.39
7.02
9.29
7.80
7.23
6.95
5.08
5.08
17.96
11.82
16.57
11.17
14.75
10.36
15.44
10.67
13.95
10.01
11.92
9.15
12.81
9.52
11.16
8.84
8.74
7.89
18.06
13.13
16.73
12.51
15.02
11.73
15.56
11.97
14.14
11.34
12.25
10.53
12.95
10.82
11.40
10.18
9.29
9.29
CWD 165 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.250 m3/s
Total
4.67
6.46
6.17
5.57
5.28
4.24
3.94
6.00
5.72
5.12
4.83
3.79
3.49
5.55
5.27
4.67
4.38
3.34
3.04
5.09
4.81
4.22
3.93
2.90
2.60
-9-
Medium Speed
0.430 m3/s
Total
6.31
8.74
8.34
7.53
7.13
5.72
5.30
8.12
7.73
6.92
6.52
5.11
4.70
7.51
7.12
6.31
5.91
4.51
4.09
6.90
6.51
5.71
5.30
3.91
3.49
Maximum Speed
0.550 m3/s
Total
7.20
9.96
9.50
8.58
8.11
6.51
6.03
9.26
8.80
7.89
7.42
5.82
5.34
8.56
8.11
7.19
6.73
5.14
4.65
7.87
7.41
6.50
6.04
4.45
3.97
CWD 175 COOLING DUTIES
Room Air On
wb /C
db /C
27
19
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
21
15
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
24
17
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
27
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
29
19
CW Temperature
IN /C
OUT /C
6
11
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
5
9
5
11
5
13
7
11
7
13
7
15
9
13
9
15
9
17
Minimum Speed
0.350 m3/s
Total
Sensible
11.42
7.59
7.89
5.78
6.51
5.12
4.23
4.10
6.11
4.93
3.84
3.84
3.38
3.38
4.14
4.06
3.10
3.10
2.60
2.60
10.25
7.01
9.16
6.49
7.40
5.69
8.51
6.19
7.26
5.63
4.54
4.48
6.65
5.36
5.04
4.68
3.75
3.75
12.73
8.22
11.79
7.76
10.48
7.16
11.00
7.39
9.97
6.93
8.46
6.27
9.17
6.58
8.01
6.09
5.89
5.24
12.80
9.08
11.90
8.65
10.69
8.08
11.07
8.26
10.11
7.81
8.73
7.21
9.26
7.44
8.19
6.98
6.41
6.25
Medium Speed
0.510 m3/s
Total
Sensible
15.21
10.31
10.53
7.88
8.77
7.05
5.14
5.14
8.13
6.76
5.91
5.78
4.17
4.17
5.62
5.62
4.26
4.26
3.17
3.17
13.68
9.53
12.21
8.84
10.13
7.91
11.32
8.44
9.67
7.71
6.88
6.54
8.81
7.34
6.85
6.53
4.65
4.65
17.00
11.15
15.70
10.54
13.98
9.76
14.63
10.05
13.23
9.43
11.30
8.61
12.15
8.97
10.59
8.32
8.27
7.40
17.10
12.37
15.85
11.78
14.23
11.04
14.74
11.27
13.41
10.68
11.62
9.91
12.28
10.18
10.82
9.57
8.72
8.72
Maximum Speed
0.600 m3/s
Total
Sensible
17.04
11.69
11.83
8.95
9.86
8.04
6.33
6.33
9.11
7.70
6.71
6.65
4.53
4.53
6.41
6.41
5.07
5.07
3.43
3.43
15.36
10.82
13.70
10.05
11.40
9.03
12.68
9.59
10.83
8.78
7.95
7.58
9.86
8.36
7.68
7.47
5.83
5.83
19.12
12.56
17.60
11.95
15.67
11.09
16.41
11.41
14.81
10.71
12.66
9.81
13.59
10.20
11.83
9.47
9.29
8.47
19.22
14.06
17.78
13.39
15.95
12.56
16.54
12.82
15.01
12.15
13.00
11.29
13.74
11.60
12.08
10.91
9.98
9.98
CWD 175 HEATING DUTIES
Room Air On
wb /C/%RH
db /C
20
12
10
50%
10
50%
10
50%
10
50%
10
50%
10
50%
15
50%
15
50%
15
50%
15
50%
15
50%
15
50%
20
50%
20
50%
20
50%
20
50%
20
50%
20
50%
25
50%
25
50%
25
50%
25
50%
25
50%
25
50%
LPHW Temperature
IN /C
OUT /C
80
70
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
90
80
90
75
80
70
80
65
65
55
65
50
Minimum Speed
0.350 m3/s
Total
5.64
7.81
7.46
6.73
6.37
5.11
4.75
7.26
6.91
6.18
5.83
4.57
4.20
6.71
6.36
5.64
5.29
4.03
3.67
6.16
5.82
5.10
4.74
3.50
3.13
-10-
Medium Speed
0.510 m3/s
Total
6.92
9.57
9.13
8.25
7.80
6.26
5.80
8.90
8.46
7.58
7.13
5.60
5.14
8.23
7.79
6.91
6.47
4.94
4.48
7.56
7.13
6.25
5.81
4.28
3.82
Maximum Speed
0.600 m3/s
Total
7.53
10.42
9.93
8.98
8.49
6.81
6.31
9.69
9.21
8.25
7.76
6.09
5.58
8.96
8.48
7.53
7.04
5.37
4.87
8.23
7.76
6.80
6.32
4.66
4.15
WATER VOLUME IN COILS (litres)
COIL
CWD 25
CWD 45
CWD 65
CWD 95
CWD 105
CWD 115
CWD 165
COOLING
0.956
1.595
2.625
3.15
3.9
3.9
5.78
CWD 175
5.78
HEATING
0.134
0.21
0.31
0.4
0.40
0.40
0.58
0.58
EXTERNAL RESISTANCE v AIR VOLUME and DUTY TABLES
Conditions:
TOTAL COOLING 27/C db/19/C wb. Flow 6/C Return 11/C
TOTAL HEATING 20/C db/12/C wb. Flow 80/C Return 70/C
With all front discharge spigots fitted
CWD 25
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.056
1.48
0.78
0.051
1.37
0.74
0.048
1.31
0.71
0.043
1.20
0.67
0.038
1.08
0.62
0.032
0.93
0.56
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.099
2.21
1.06
0.095
2.15
1.04
0.090
2.07
1.01
0.082
1.95
0.96
0.077
1.86
0.93
0.069
1.72
0.87
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.137
2.69
1.25
0.129
2.60
1.21
0.119
2.48
1.16
0.106
2.31
1.10
0.099
2.21
1.06
0.090
2.07
1.01
CWD 45
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.113
2.96
1.58
0.101
2.72
1.48
0.095
2.59
1.43
0.086
2.40
1.35
0.079
2.24
1.29
0.064
1.88
1.14
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.195
4.31
2.11
0.187
4.20
2.06
0.174
4.01
1.99
0.156
3.73
1.88
0.146
3.56
1.81
0.127
3.22
1.68
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.270
5.23
2.48
0.255
5.07
2.41
0.234
4.82
2.31
0.209
4.50
2.18
0.195
4.31
2.12
0.177
4.05
2.00
CWD 65
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.130
3.77
2.16
0.113
3.36
1.99
0.101
3.06
1.87
0.087
2.69
1.71
0.078
2.44
1.60
0.062
1.96
1.39
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.224
5.70
2.92
0.214
5.52
2.85
0.201
5.27
2.76
0.184
4.94
2.63
0.174
4.74
2.55
0.154
4.32
2.38
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.331
7.37
3.59
0.316
7.16
3.51
0.295
6.86
3.38
0.270
6.47
3.23
0.258
6.28
3.15
0.232
5.84
2.98
CWD 95
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.209
5.80
3.19
0.198
5.56
3.09
0.173
5.00
2.86
0.136
4.09
2.49
0.106
3.29
2.15
0.066
2.06
1.61
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.324
7.96
4.05
0.311
7.74
3.96
0.288
7.34
3.80
0.255
6.73
3.56
0.217
5.97
3.25
0.181
5.18
2.94
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.421
9.44
4.64
0.404
9.20
4.55
0.377
8.80
4.39
0.346
8.32
4.19
0.325
7.98
4.05
0.285
7.29
3.78
CWD 105
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.212
6.56
3.21
0.194
6.10
3.06
0.165
5.32
2.79
0.134
4.43
2.47
0.103
3.47
2.12
0.067
2.28
1.63
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.319
9.00
4.02
0.306
8.73
3.93
0.282
8.21
3.76
0.244
7.34
3.47
0.210
6.51
3.20
0.173
5.54
2.86
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.416
10.86
4.62
0.399
10.55
4.52
0.370
10.01
4.34
0.335
9.32
4.12
0.313
8.88
3.98
0.272
7.98
3.69
CWD 115
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.242
7.29
3.46
0.224
6.68
3.31
0.188
5.94
3.00
0.158
5.12
2.72
0.141
4.63
2.55
0.102
3.44
2.10
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.360
9.82
4.28
0.340
9.43
4.15
0.320
9.02
4.02
0.271
7.96
3.68
0.239
7.22
3.43
0.200
6.25
3.11
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.433
11.15
4.71
0.411
10.77
4.59
0.400
10.57
4.53
0.333
9.29
4.09
0.312
8.85
3.97
0.261
7.73
3.60
CWD 165
Pressure (Pa)
0
15
30
50
60
75
MINIMUM SPEED
Cooling kW Heating kW
9.52
4.98
9.09
4.83
8.65
4.67
8.50
4.61
8.06
4.45
7.15
4.10
MEDIUM SPEED
Cooling kW Heating kW
14.77
6.77
14.10
6.55
13.41
6.31
12.93
6.15
12.44
5.99
11.94
5.82
MAXIMUM SPEED
Cooling kW Heating kW
16.65
7.40
16.25
7.26
16.05
7.20
14.55
6.70
13.41
6.31
13.17
6.23
CWD 175
Pressure (Pa)
0
15
30
50
60
75
0.280
0.265
0.250
0.245
0.230
0.200
MINIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.380
12.19
5.90
0.360
11.68
5.73
0.350
11.42
5.64
0.330
10.90
5.46
0.320
10.63
5.37
0.300
10.08
5.18
0.490
0.460
0.430
0.410
0.390
0.370
MEDIUM SPEED
Air flow m³/s Cooling kW Heating kW
0.530
15.63
7.06
0.520
15.42
6.99
0.510
15.21
6.92
0.450
13.64
6.39
0.420
13.17
6.23
0.410
12.68
6.07
-11-
0.580
0.560
0.550
0.480
0.430
0.420
MAXIMUM SPEED
Air flow m³/s Cooling kW Heating kW
0.670
18.35
7.97
0.630
17.61
7.72
0.600
17.04
7.53
0.580
16.65
7.40
0.560
16.25
7.26
0.540
15.84
7.13
OPTIONAL ELECTRIC HEATING, (at 240V, 50Hz)
CWD
ELECTRIC HEATER (kW)
25
1.0
45
2.0
65
2.5
95
4.0
105
4.0
115
4.0
165
4.0
175
4.0
SOUND PRESSURE LEVELS CWD. (Sound pressure levels are for a typical installation and must be used
for guidance only. Refer to the sound power data below for more accurate figures).
MIN
MED
MAX
MODEL
dBA
NC
dBA
NC
dBA
NC
25
32
28
38
32
43
36
45
35
28
42
36
47
42
65
33
30
40
34
46
40
95
36
29
41
35
47
40
105
35
28
40
34
45
39
115
39
34
44
39
47
42
165
35
30
47
43
48
44
175
44
40
48
44
51
46
SOUND POWER AT INLET AND BREAK-OUT
SPEED Model
MIN
MED
MAX
1. Sound Pressure Levels are dB relative
to 2 x 10-5N/m2.
2. All readings at 3m distance, 1m below
units running in a standard hotel
bedroom.
SOUND POWER AT DISCHARGE
125Hz
250Hz
500Hz
1KHz
2KHz
4KHz
125Hz
250Hz
500Hz
1KHz
2KHz
4KHz
25
46.1
43.6
43.2
37.6
32.5
30.4
38.1
32.4
36.5
34.9
35.8
37.3
45
52.1
50.8
47.5
42.2
35.4
31.5
40.8
34.4
37.7
32.5
32.8
34.1
65
46.6
46.4
44.8
39.4
29.6
36.6
35.4
29.6
35.4
31.4
32.8
33.5
95
55.6
52.9
48.3
43.2
36.9
34.8
42.7
36.8
38.5
33.8
32.7
33.4
105
54.6
51.6
46.5
41.8
36.7
33.9
40.2
36.4
38.2
34.1
32.9
32.6
115
56.9
55.2
50.5
45.2
40.3
41.9
44.8
39.4
41.1
35.7
32.8
32.3
165
58.4
47.4
48.7
44.4
32.6
25.6
34.1
31.9
28.4
23.9
18.5
21.3
175
61.5
56.2
55.6
54.4
46.3
36.6
42.6
41.8
36.0
26.1
18.5
21.2
25
53.7
51.3
49.6
45.5
39.7
32.6
45.9
39.8
43.4
40.4
36.8
37.5
45
58.3
59.5
55.1
50.2
43.2
38.1
47.1
43.4
44.8
39.9
35.4
34.1
65
53.5
53.4
51.9
48.3
41.4
38.7
41.9
34.8
37.5
38.1
34.9
33.9
95
60.6
59.2
54.1
49.3
43.2
38.9
46.8
42.2
44.1
39.8
34.7
33.4
105
59.7
58.4
52.8
47.8
40.7
37.5
46.7
42.4
44.4
40.4
35.6
33.5
115
61.2
60.1
55.8
52.3
45.7
42.7
49.3
44.8
46.4
42.8
35.7
33.2
165
64.3
60.0
58.1
56.6
50.2
42.3
47.2
45.4
39.0
29.9
22.1
21.2
175
65.6
61.8
59.0
57.7
51.8
44.5
48.9
47.1
40.5
30.2
23.5
21.2
25
57.2
55.4
52.9
49.2
44.4
35.9
49.9
44.6
47.3
44.9
40.5
37.7
45
61.6
65.4
60.2
55.4
49.1
43.7
51.9
50.4
51.1
46.1
40.7
37.5
65
58.6
59.9
57.1
54.2
48.5
45.2
49.8
43.4
46.6
45.8
40.7
37.2
95
64.6
64.9
58.2
53.9
48.3
44.7
50.2
48.2
49.1
45.4
39.3
38.6
105
64.1
64.3
56.9
52.8
45.6
41.4
49.8
48.1
49.2
45.5
39.4
35.7
115
64.2
64.2
59.3
56.1
49.5
46.1
51.7
48.5
49.4
46.3
39.2
35.9
165
65.7
61.8
59.5
57.9
52.1
44.6
49.8
48.0
41.1
31.5
23.6
21.2
175
67.1
63.7
61.2
60.0
54.8
47.4
51.0
49.2
42.0
31.5
23.6
21.2
ELECTRICAL DATA
CWD Maximum Running Current (Amps at 230V, 50Hz).
Model
25
45
65
95
Standard
0.4
0.6
0.7
0.8
0.8
0.8
1.9
2.1
With Electric Htg
4.4
8.6
10.7
16.8
16.8
16.8
18.2
18.8
-12-
105
115
165
175
RECOMMENDED FUSE SIZES (Amps)
Model
25
45
65
95
105
115
165
175
Standard
5
5
5
5
5
5
5
5
With Electric Htg
10
10
16
20
20
20
25
25
CWD FAN COIL UNIT INSTALLATION
CWD fan coil units are designed to be installed within a ceiling void. Air discharge should be via insulated ducting,
connected to 200mm diameter spigots (250mm diameter spigots also available) and to appropriately sized discharge
plenums/grilles. Ducting and discharge facilities are supplied by others and are not included with the fan coil units.
Similarly, return air arrangements, via ducting or to the ceiling void, must also be provided.
The installer must ensure that the mounting suspension points are capable of supporting the operating weight of the unit,
(refer to the table below).
UNIT FIXING
NOTE:
If used, a condensate pump kit should be fitted prior to hanging the unit and connecting the
pipework.
1. Before lifting the unit into position, mark out the four outer fixing points as shown below, and fit suspension rods of
appropriate length and diameter, (minimum recommended thread size M8). Two inner, central fixing points are
available for installer convenience.
DO NOT lift the unit by its spigots, drain tray or electrics box when raising it into position.
MODEL
25
A
463
B
785
C
CRS
D
CRS
E
CRS
F
427
344
688
260
G
332
H
J
K
OPERATING
WEIGHT
(kg)
130 195 195
22
PIPE CONNECTIONS
( mm OD)
W
X
Y
Z
15 15 15 15
DRAIN
TRAY
15
No. OF
OUTLETS
MINIMUM
No. OF
OUTLETS
TO BE
USED
3 (A,C,E)
1
45
733
785
697
344
688
260
342
130 195 195
33
15 15 15 15
15
4 (A,B,D,E)
2
65
1103
785
1067
344
688
260
352
130 195 195
44
22 22 15 15
15
4 (A,B,D,E)
2
95
1383
785
1347
344
688
260
392
120 205 205
56
22 22 15 15
15
5
3
105
1383
785
1347
344
688
260
392
120 205 205
58
22 22 15 15
15
5
3
115
1383
785
1347
344
688
260
392
120 205 205
59
22 22 15 15
15
5
3
165
1383
835
1347
394
738
315
392
130 205 195
86
22 22 15 15
15
5
3
175
1383
835
1347
394
738
315
392
130 205 195
86
22 22 15 15
15
5
3
-13-
2. Lift the unit into position and secure with appropriate fixings (as shown). The use of lock
nuts will stabilize the unit.
NOTE:
The drain tray is designed with a natural fall to ensure complete drainage. It is essential,
for the correct operation of the condensate removal system, that the unit is square and
level.
RETURN AIR PLENUM
When installing a unit fitted with a return air plenum, there are eight fixing points as
shown below.
NOTE: The centre fixings must always be used to support the weight of the unit correctly, (refer to the table below).
MODEL
A
B
C
D
E
CRS CRS CRS
F
G
H
J
K
OPERATING
WEIGHT
(kg)
PIPE CONNECTIONS
( mm OD)
W
X
Y
Z
DRAIN
TRAY
No. OF
OUTLETS
MINIMUM
No. OF
OUTLETS
TO BE
USED
1
25
463
1076
427
344
981 260 332 421 486 486
26
15 15 15 15
15
3 (A,C,E)
45
733
1076
697
344
981 260 342 421 486 486
39
15 15 15 15
15
4 (A,B,D,E)
2
65
1103
1076 1067
344
981 260 352 421 486 486
52
22 22 15 15
15
4 (A,B,D,E)
2
3
95
1383
1076 1347
344
981 260 392 411 496 496
66
22 22 15 15
15
5
105
1383
1076 1347
344
98
260 392 411 496 496
68
22 22 15 15
15
5
3
115
1383
1076 1347
344
981 260 392 411 496 496
69
22 22 15 15
15
5
3
165
1383
1126 1347
394 1031 315 392 421 496 486
96
22 22 15 15
15
5
3
175
1383
1126 1347
394 1031 315 392 421 496 486
96
22 22 15 15
15
5
3
-14-
PIPE CONNECTIONS
CWD UNITS
a. Connect the flow and return pipework as indicated in the diagrams and tables on the two previous pages. It is
recommended that compression fittings are used for ease of installation
b. If using compression fittings, two spanners should be used when tightening to prevent twisting and damage to the
coil terminals.
c. Coil pipe connections are 15mm OD on all LPHW, 15mm OD on Chilled Water sizes 25 and 45, 22mm OD on
Chilled Water sizes 65 to 175.
d. When making the condensate drain connection, use a flexible or compression connector to allow removal of the
drain tray for cleaning and maintenance. The condensate outlet connection is 15mm OD.
ELECTRICAL CONNECTIONS AND CONTROLS
Mains, control and interconnecting cables must be supplied and fitted by the installer.
Installer wiring must be carried out in accordance with local and national regulations.
Cables must be size compatible with the recommended fuse for a given system.
An isolator switch should be positioned within easy reach of the unit.
If slave units are connected to a standard unit, isolation of any slave MUST also isolate the standard unit.
The equipment MUST be earthed.
Cable glands suitable for stranded cables are supplied and should be used to secure all cables. Installers must supply
a method of securing any solid sheathed cable.
CWD UNIT WIRING
Remove the electrics box cover (2 screws) and connect a suitably fused and isolated mains supply.
All site fitted controls should be connected as specified on the wiring diagram found on the inside face of the electric box
cover and on pages 17 to 18 of this manual.
DUCTWORK
Connect discharge ductwork to the spigots provided. Spigot positions are shown below. Spigots are designed to accept
200mm diameter ducting (250mm diameter spigots are available as an option).
The installation engineer must ensure that insulated ducting is used and that the complete spigot exterior is insulated up
to the unit casing to prevent condensation forming.
B
C
MAXIMUM No.
OF SPIGOTS MINIMUM NUMBER OF
SPIGOTS REQUIRED
FRONT SIDES
CWD
A
25
195
---
---
1
2
1
45
184
476
---
2
2
2
65
322
708
---
2
2
2
3
95
270
655
1040
3
2
105
270
655
1040
3
2
3
115
270
655
1040
3
2
3
165
270
655
1040
3
2
3
175
270
655
1040
3
2
3
-15-
WHEN INSTALLATION HAS BEEN COMPLETED - CHECK:1. All pipework and joints for leaks
2. That all pipes and fittings are insulated
3. That terminals are tight and that no wire cores are exposed
4. That duct connections are air tight and insulated where necessary.
5. Filters are clean and undamaged
MAINTENANCE
A Every 2 months
Inspect the filters and clean or replace as necessary
B Every 6 months
Inspect and clean the fan rotors.
C Every 12 months
1. Check the unit fixing
2. Ensure that the fan motor and fan deck fixings are tight.
3. Check the unit wiring for damage and ensure that all terminals are tight.
HYDRAULIC RESISTANCES - COOLING AND HEATING COILS
-16-
WIRING DIAGRAMS
CWD 25
CWD 45 - 115
-17-
CWD 165
CWD 175
-18-
-19-
INDOOR UNIT EXPLODED VIEW WITH COMPONENT IDENTIFICATION
ITEM
DESCRIPTION
1
ACCESS PANEL
2
DRAIN TRAY
3
COIL AND HEADER
4
FAN DECK ASSEMBLY
5
SPIGOT (200mm
6
TERMINAL BLOCK (16A)
7
FILTER ASSEMBLY
-20-