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TECHNICAL MANUAL
CWM: REMOTE WIRED CHILLED WATER HIGH WALL UNITS
CWM L: INFRARED CHILLED WATER HIGH WALL UNITS
GENERAL Part numbers, dimensions and weights 2
Unit features/accessories 2
Optional control valves, valve positions 3
PRODUCT Optional electric heating 3
SELECTION Airflows 3
Coil water volumes 3
Air throws 4
Hydraulic resistances 4
Sound power and pressure levels 4
Chilled water/low pressure hot water coil duties 5
INSTALLATION CWM (L) unpacking 8
Removing the case 8
Pipework 9
Interconnecting wiring, fuses 10
Gravity drain 10
Fitting the case 11
Fitting filters 11
Check list
11
MAINTENANCE
User maintenance 12
OPTIONAL CWM wired remote controller (RCC 30) 13
CONTROLS CWM L infrared remote controller 14
WIRING CWM 15
DIAGRAMS CWM L 15
OPERATING CWM remote wired controller 13
INSTRUCTIONS CWM L infrared remote controller 16
CWM (L) KITS Electric heaters 18
5m high condensate pump 20
Programmable timer (for CWM) 22
Pipe thermostat (for 2 pipe heat/cool systems) 23
CWM (L) valve connections 24
Remote return air sensor (for RCC30 controller) 25
FAULT FINDING All models 25
COMPONENT Exploded view of chassis with component identification 26
IDENTIFICATION Exploded view of case 27
TEV Ltd.,
Armytage Road, Brighouse,
West Yorkshire, HD6 1QF, UK.
Tel: +44 (0)1484 405600
Fax: +44 (0)1484 405620
Email: sales@quartz.co.uk
97308102-04
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TEV LIMITED - CHILLED WATER HIGH WALL UNITS
The 973 series consists of CWM chilled water high wall units using remote wired controllers and CWM L chilled water
high wall units using infrared controllers.
PART NUMBERS - CWM (L) INDOOR UNITS
CWM CWM 55 CWM 75 CWM 105
97300001 97300002 97300003
CWM L CWM L 55 CWM L 75 CWM L105
97300004 97300005 97300006
UNPACKED DIMENSIONS AND WEIGHTS
Model
CWM (L)
55 75 105
HEIGHT mm 350 350 350
WIDTH mm 1200 1500 1800
DEPTH mm 223 223 223
WEIGHT kg 19 23 27
PACKED DIMENSIONS AND WEIGHTS
Model
CWM (L)
55 75 105
HEIGHT mm 295 295 295
WIDTH mm 1270 1570 1870
DEPTH mm 410 410 410
WEIGHT kg 23 28 33
FEATURES/ACCESSORIES
CWM CWM L
Top air discharge
STD STD
Adjustable air deflection
STD STD
Long life washable filter
STD STD
3 fan speeds
STD STD
Electric heating
** **
Remote hard wired control
* ---
Remote temperature sensor
** ---
Programmable timer
** ---
Remote infrared control
--- *
Gravity drain
STD STD
5m high condensate pump
** **
Pipe thermostat (2 pipe H/C)
** **
Low Pressure Hot Water coil
**
2 or 4 port valves
**
STD = Standard * = factory option ** = site accessory ---- = not available
.
For group control systems, contact TEV Ltd. Technical Sales Department.
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OPTIONAL CONTROL VALVES
2 port on/off valves or 4 port diverting valves are available as factory fitted options.
(4 port modulating valves are also available - contact TEV Technical Sales Department).
2 pipe cool only systems require one valve per fan coil.
2 pipe heat/cool systems (supplied from a reverse cycle chiller, or chiller + boiler) require one valve: if using an
auto changeover thermostat, they also need a means of signalling heating or cooling status of the flow eg a pipe
thermostat (kit shown on page 23).
4 pipe systems require two valves (but no pipe thermostat is needed).
VALVE POSITIONS
ELECTRICAL LOADS (A)
CWM (L)
Fan motor Electric heater
55
0.4 5.2
75
0.4 7.2
105
0.5 9.2
OPTIONAL ELECTRIC HEATING (kW)
CWM (L) 240V 50Hz 230V 50Hz
55
1.3 1.2
75
1.8 1.7
105
2.3 2.1
AIRFLOWS (m³/s)
CWM (L) LOW SPEED MEDIUM SPEED HIGH SPEED
55 0.17 0.19 0.28
75 0.24 0.31 0.37
105 0.25 0.34 0.49
COIL WATER VOLUMES (Litres)
CWM (L) Chilled water coil LPHW coil
55 1.6 0.18
75 2.0 0.24
105 2.5 0.30
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AIR THROWS
--o--o--O--O--O--o--o--
HYDRAULIC RESISTANCES
--o--o--O--O--O--o--o--
SOUND POWER and SOUND PRESSURE LEVELS
973 SERIES CWM (L) ( speed 1 = lowest, 3 = highest)
SOUND POWER LEVELS
SOUND PRESSURE LEVELSFrequency Hz
MODEL SPEED 125 250 500 1K 2K 4K dBA dBA NC
55
MIN 36.8 37 39.1 38.8 34.4 31.7 43 25 19
MED 41 43.4 45.8 45.1 39.6 35.4 49 31 25
MAX 46.7 48.6 50.6 50.4 46.6 39 54 37 31
75
MIN 39.1 44.3 47.2 46.8 41.6 40.8 51 33 27
MED 43.8 49.1 51.3 51.3 46.7 39.5 55 37 32
MAX 45.5 50.5 53.7 52.9 48.7 40.8 57 39 34
105
MIN 34.1 38 44 42.3 41 38 48 30 24
MED 42.7 45.8 48.9 49.1 44.2 38.1 53 35 30
MAX 46.4 51.6 54.2 54.2 49.9 42.9 57 40 35
Sound Power Levels obtained in conformance with BS 4196: Part 5: 1981. Values are shown in dB with a standard
reference of 1 pW.
Sound Pressure Levels are dB relative to 2 x 10
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N/m2 and are calculated from results measured in anechoic conditions.
Values relate to a position of 3m away from the centre line of the unit, 1m down.
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WALL MOUNTED CHILLED WATER PERFORMANCE DATA (kW)
CWM (L) 55 COOLING DUTIES
Minimum Speed Medium Speed Maximum Speed
Room Air On CW Temperature 0.17 m
3
/s 0.19 m3/s 0.28 m3/s
db °C wb °C IN °C OUT °C Total Sensible Total Sensible Total Sensible
27 19 6 11 3.14 2.43 3.39 2.65 4.28 3.54
21 15 5 9 2 1.79 2.17 1.96 2.78 2.65
21 15 5 11 1.43 1.43 1.52 1.52 1.85 1.85
21 15 5 13 1.26 1.26 1.33 1.33 1.61 1.61
21 15 7 11 1.39 1.39 1.58 1.58 2.19 2.19
21 15 7 13 1.18 1.18 1.26 1.26 1.53 1.53
21 15 7 15 1.02 1.02 1.08 1.08 1.3 1.3
21 15 9 13 1.12 1.12 1.19 1.19 1.7 1.7
21 15 9 15 0.94 0.94 1 1 1.21 1.21
21 15 9 17 0.78 0.78 0.83 0.83 0.99 0.99
24 17 5 9 2.96 2.96 3.19 2.5 4.04 3.33
24 17 5 11 1.79 1.79 1.91 1.91 2.7 2.7
24 17 5 13 1.62 1.62 1.72 1.72 2.08 2.08
24 17 7 11 2.24 1.99 2.42 2.17 3.04 2.91
24 17 7 13 1.55 1.55 1.65 1.65 2.15 2.15
24 17 7 15 1.38 1.38 1.46 1.46 1.77 1.77
24 17 9 13 1.66 1.66 1.82 1.82 2.47 2.47
24 17 9 15 1.3 1.3 1.39 1.39 1.69 1.69
24 17 9 17 1.14 1.14 1.21 1.21 1.45 1.45
27 19 5 9 3.91 2.76 4.21 3 5.32 3.96
27 19 5 11 2.97 2.36 3.23 2.59 4.14 3.48
27 19 5 13 1.98 1.98 2.1 2.1 2.57 2.57
27 19 7 11 3.23 2.47 3.46 2.68 4.34 3.56
27 19 7 13 1.92 1.92 2.15 2.15 3.04 3.04
27 19 7 15 1.73 1.73 1.84 1.84 2.25 2.25
27 19 9 13 2.48 2.17 2.66 2.36 3.3 3.16
27 19 9 15 1.67 1.67 1.78 1.78 2.58 2.58
27 19 9 17 1.49 1.49 1.59 1.59 1.93 1.93
29 19 5 9 3.91 3.09 4.2 3.36 5.26 4.46
29 19 5 11 2.98 2.69 3.22 2.95 4.09 3.98
29 19 5 13 2.22 2.22 2.36 2.36 3.25 3.25
29 19 7 11 3.22 2.79 3.45 3.04 4.29 4.06
29 19 7 13 2.35 2.35 2.6 2.6 3.54 3.54
29 19 7 15 1.98 1.98 2.1 2.1 2.66 2.66
29 19 9 13 2.5 2.5 2.72 2.72 3.63 3.63
29 19 9 15 1.99 1.99 2.24 2.24 3.09 3.09
29 19 9 17 1.73 1.73 1.84 1.84 2.25
2.25
HEATING DUTIES
Minimum Speed Medium Speed Maximum Speed
Room Air On LPHW Temperature 0.17 m
3
/s 0.19 m3/s 0.28 m3/s
db °C wb °C/%RH IN °C OUT °C Total Total Total
20 12 82 71 1.1 1.17 1.46
10 50% 90 80 1.68 1.78 2.18
10 50% 90 75 1.4 1.5 1.87
10 50% 80 70 1.38 1.47 1.81
10 50% 80 65 0.99 1.08 1.41
10 50% 65 55 0.85 0.92 1.18
10 50% 65 50 0.57 0.59 0.65
15 50% 90 80 1.54 1.64 2.01
15 50% 90 75 1.25 1.34 1.68
15 50% 80 70 1.24 1.32 1.63
15 50% 80 65 0.73 0.75 1.19
15 50% 65 55 0.58 0.7 0.97
15 50% 65 50 0.5 0.51 0.57
20 50% 90 80 1.41 1.49 1.84
20 50% 90 75 1.09 1.18 1.49
20 50% 80 70 1.09 1.17 1.45
20 50% 80 65 0.65 0.67 0.75
20 50% 65 55 0.51 0.52 0.59
20 50% 65 50 0.42 0.44 0.48
25 50% 90 80 1.27 1.35 1.66
25 50% 90 75 0.92 1 1.29
25 50% 80 70 0.95 1.02 1.27
25 50% 80 65 0.57 0.59 0.66
25 50% 65 55 0.43 0.44 0.5
25 50% 65 50 0.35 0.37
0.4
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WALL MOUNTED CHILLED WATER PERFORMANCE DATA (kW)
CWM (L) 75 COOLING DUTIES
Minimum Speed Medium Speed Maximum Speed
Room Air On CW Temperature 0.24 m
3
/s 0.31 m3/s 0.37 m3/s
db °C wb °C IN °C OUT °C Total Sensible Total Sensible Total Sensible
27 19 6 11 5.14 3.72 6.18 4.55 6.94 5.2
21 15 5 9 3.29 2.73 4.02 3.38 4.55 3.89
21 15 5 11 2.05 2.05 2.34 2.34 2.54 2.54
21 15 5 13 1.79 1.79 2.02 2.02 2.19 2.19
21 15 7 11 1.98 1.98 2.72 2.72 3.18 3.18
21 15 7 13 1.7 1.7 1.93 1.93 2.09 2.09
21 15 7 15 1.44 1.44 1.63 1.63 1.75 1.75
21 15 9 13 1.61 1.61 1.84 1.84 2.38 2.38
21 15 9 15 1.34 1.34 1.52 1.52 1.65 1.65
21 15 9 17 1.1 1.1 1.24 1.24 1.33 1.33
24 17 5 9 4.83 3.52 5.79 4.3 6.51 4.91
24 17 5 11 2.62 2.58 2.97 2.97 3.74 3.74
24 17 5 13 2.31 2.31 2.63 2.63 2.85 2.85
24 17 7 11 3.75 3.05 4.51 3.74 5.07 4.29
24 17 7 13 2.23 2.23 2.55 2.55 2.77 2.77
24 17 7 15 1.96 1.96 2.22 2.22 2.41 2.41
24 17 9 13 2.5 2.5 3.14 3.14 3.63 3.63
24 17 9 15 1.87 1.87 2.13 2.13 2.32 2.32
24 17 9 17 1.62 1.62 1.83 1.83 1.97 1.97
27 19 5 9 6.33 4.25 7.56 5.15 8.47 5.86
27 19 5 11 4.81 3.58 5.89 4.43 6.67 5.09
27 19 5 13 2.9 2.82 3.24 3.24 3.53 3.53
27 19 7 11 5.31 3.79 6.33 4.61 7.08 5.26
27 19 7 13 2.77 2.77 4.34 3.81 5.01 4.43
27 19 7 15 2.49 2.49 2.83 2.83 3.08 3.08
27 19 9 13 4.2 3.33 5.01 4.07 5.59 4.66
27 19 9 15 2.41 2.41 2.76 2.76 3.64 3.64
27 19 9 17 2.14 2.14 2.43 2.43 2.63 2.63
29 19 5 9 6.42 4.76 7.66 5.79 8.58 6.6
29 19 5 11 4.97 4.11 6.05 5.08 6.83 5.84
29 19 5 13 3.21 3.21 3.66 3.66 3.99 3.99
29 19 7 11 5.41 4.3 6.44 5.25 7.2 6
29 19 7 13 3.5 3.5 4.57 4.48 5.21 5.19
29 19 7 15 2.85 2.85 3.25 3.25 3.54 3.54
29 19 9 13 4.32 3.84 5.14 4.7 5.73 5.39
29 19 9 15 2.77 2.77 3.85 3.85 4.5 4.5
29 19 9 17 2.49 2.49 2.84 2.84 3.08
3.08
HEATING DUTIES
Minimum Speed Medium Speed Maximum Speed
Room Air On LPHW Temperature 0.24 m
3
/s 0.31 m3/s 0.37 m3/s
db °C wb °C/%RH IN °C OUT °C Total Total Total
20 12 82 71 1.86 2.14 2.35
10 50% 90 80 2.64 3.02 3.31
10 50% 90 75 2.39 2.75 3.01
10 50% 80 70 2.24 2.56 2.8
10 50% 80 65 1.93 2.23 2.45
10 50% 65 55 1.57 1.82 2
10 50% 65 50 0.87 1.22 1.42
15 50% 90 80 2.45 2.8 3.06
15 50% 90 75 2.19 2.51 2.76
15 50% 80 70 2.04 2.33 2.55
15 50% 80 65 1.71 1.98 2.19
15 50% 65 55 1.36 1.58 1.74
15 50% 65 50 0.75 0.81 0.85
20 50% 90 80 2.25 2.57 2.82
20 50% 90 75 1.98 2.28 2.51
20 50% 80 70 1.84 2.11 2.31
20 50% 80 65 1.48 1.73 1.92
20 50% 65 55 1.14 1.33 1.47
20 50% 65 50 0.65 0.69 0.73
25 50% 90 80 2.05 2.35 2.57
25 50% 90 75 1.77 2.04 2.25
25 50% 80 70 1.63 1.88 2.06
25 50% 80 65 1.24 1.47 1.64
25 50% 65 55 0.89 1.06 1.19
25 50% 65 50 0.54 0.58
0.6
-7-
WALL MOUNTED CHILLED WATER PERFORMANCE DATA (kW)
CWM (L) 105 COOLING DUTIES
Minimum Speed Medium Speed Maximum Speed
Room Air On CW Temperature 0.25 m
3
/s 0.34 m3/s 0.49 m3/s
db °C wb °C IN °C OUT °C Total Sensible Total Sensible Total Sensible
27 19 6 11 6.1 4.23 7.63 5.39 9.68 7.07
21 15 5 9 4.05 3.16 5.12 4.06 6.54 5.36
21 15 5 11 2.33 2.33 2.74 2.74 4.05 4.05
21 15 5 13 2.04 2.04 2.38 2.38 2.81 2.81
21 15 7 11 2.74 2.57 3.59 3.38 4.63 4.52
21 15 7 13 1.93 1.93 2.26 2.26 2.69 2.69
21 15 7 15 1.65 1.65 1.92 1.92 2.25 2.25
21 15 9 13 1.82 1.82 2.62 2.62 3.6 3.6
21 15 9 15 1.53 1.53 1.79 1.79 2.11 2.11
21 15 9 17 1.27 1.27 1.46 1.46 1.71 1.71
24 17 5 9 5.63 3.97 7.04 5.06 8.93 6.63
24 17 5 11 3.09 2.86 5.28 4.27 6.89 5.73
24 17 5 13 2.63 2.63 3.09 3.09 3.67 3.67
24 17 7 11 4.5 3.46 5.63 4.42 7.13 5.83
24 17 7 13 2.53 2.53 3.28 3.28 4.81 4.81
24 17 7 15 2.23 2.23 2.62 2.62 3.1 3.1
24 17 9 13 3.23 2.92 4.09 3.77 5.17 5.03
24 17 9 15 2.12 2.12 2.5 2.5 3.79 3.79
24 17 9 17 1.84 1.84 2.15 2.15 2.53 2.53
27 19 5 9 7.22 4.74 9.01 6.01 11.39 7.82
27 19 5 11 5.98 4.18 7.55 5.36 9.64 7.06
27 19 5 13 3.43 3.13 3.81 3.81 7.09 6.02
27 19 7 11 6.13 4.24 7.63 5.39 9.62 7.05
27 19 7 13 4.71 3.64 6.02 4.71 7.69 6.26
27 19 7 15 2.82 2.82 3.33 3.33 4.89 4.89
27 19 9 13 4.96 3.74 6.17 4.77 7.75 6.28
27 19 9 15 2.72 2.72 4.17 3.99 5.5 5.41
27 19 9 17 2.43 2.43 2.85 2.85 3.39 3.39
29 19 5 9 7.32 5.29 9.13 6.72 11.51 8.78
29 19 5 11 6.12 4.74 7.71 6.08 9.8 8.03
29 19 5 13 3.63 3.63 5.31 5.07 7.37 7.02
29 19 7 11 6.24 4.79 7.76 6.1 9.76 8.01
29 19 7 13 4.89 4.2 6.2 5.43 7.88 7.23
29 19 7 15 3.22 3.22 3.81 3.81 6.11 6.11
29 19 9 13 5.08 4.29 6.31 5.48 7.9 7.24
29 19 9 15 3.6 3.6 4.75 4.75 6.38 6.38
29 19 9 17 2.82 2.82 3.33 3.33 5.14
5.14
HEATING DUTIES
Minimum Speed Medium Speed Maximum Speed
Room Air On LPHW Temperature 0.25 m
3
/s 0.34 m3/s 0.49 m3/s
db °C wb °C/%RH IN °C OUT °C Total Total Total
20 12 82 71 2.28 2.69 3.25
10 50% 90 80 3.18 3.74 4.52
10 50% 90 75 2.93 3.46 4.17
10 50% 80 70 2.7 3.18 3.84
10 50% 80 65 2.42 2.87 3.48
10 50% 65 55 1.96 2.33 2.82
10 50% 65 50 1.53 1.87 2.33
15 50% 90 80 2.94 3.47 4.19
15 50% 90 75 2.7 3.19 3.84
15 50% 80 70 2.47 2.91 3.51
15 50% 80 65 2.18 2.59 3.15
15 50% 65 55 1.72 2.05 2.49
15 50% 65 50 1.18 1.53 1.94
20 50% 90 80 2.71 3.2 3.86
20 50% 90 75 2.46 2.91 3.52
20 50% 80 70 2.24 2.64 3.19
20 50% 80 65 1.93 2.3 2.81
20 50% 65 55 1.47 1.76 2.15
20 50% 65 50 0.8 0.88 1.52
25 50% 90 80 2.48 2.92 3.53
25 50% 90 75 2.22 2.63 3.19
25 50% 80 70 2.01 2.37 2.86
25 50% 80 65 1.67 2.01 2.46
25 50% 65 55 1.22 1.47 1.8
25 50% 65 50 0.67 0.73
0.8
-8-
INSTALLATION
HANGING RAIL
FIXING THE HANGING RAIL
HANGING THE UNIT CHASSIS
-9-
S = No Electric Heating / Sans Batterie Electrique / Ohne Elektroheizung
H = + Electric Heaters / + Batterie Electrique / Mit Elektroheizung
H = 1.3 kW (CWM 55) = 1.8 kW (CWM 75), = 2.3 kW (CWM 105) @ 230V
FUSE RATING / TAILLE DES DISJONCTEURS / EMPFOHLENE SICHERUNG (EN60269 / EN60898)
(A)
CWM (L) S H
55
510
75
510
105
516
-10-
FITTING THE CASE
FITTING THE FILTERS
CWM L INSTALLATION CHECK LIST Page Checked
1
Is the unit square and level with the ceiling ? 9
2
Is the pipework correctly supported throughout its length ? 5
3
Is the pipework insulated right up to the unit ? 9
4
Have all pipework joints been carefully checked for leaks ? -
5
Is the fuse size correct ? 10
6
Is the interconnecting wiring correct ? 10
7
Does the system respond correctly to commands from the controller ? -
8
Is the condensate drain correctly sized, connected, supported and insulated ? 10
9
Has the effectiveness of condensate removal system been tested and there are no leaks ? -
10
Is the air distribution as required? -
CHECK LIST DE L’INSTALLATION DE CWM L Page Vérifié
1
L’unité est-elle fixée de niveau ? 9
2
Les tuyauteries sont-elles correctement fixées ? 5
3
Avez-vous isolé les tuyauteries jusqu’au chássis de l’unité ? 9
4
Avez-vous effectué une recherche de fuites ? -
5
La taille du disjoncteur est-elle correcte ? 10
6
Les câblages d’interconnexions sont-ills corrects ? 10
7
Le système répond-t-il correctement à la télécommande ? -
8
L’evacuation des condensats est-ell correctement raccordée, supportée et isolée ? 10
9
Avez-vous vérifié le bon fonctionnement de l’évacuation des condensats et qu’il n’y a pas de fuites ? -
10
La distribution d’air est-elle correcte ? -
CWM L MONTAGE PRÜFLISTE Seite Geprüft
1
Ist das Gerät waagerrecht und eben eingebaut ? 9
2
Sind alle Rohrleitungen über deren gesamte Länge richtig befestigt ? 5
3
Sind beide Leitungen bis zum Gerätegehäuse isoliert worden ? 9
4
Sind alle Rohrleitungen und Verbindungen auf Leckagen untersucht worden ? -
5
Ist die Sicherungsgröße richtig ? 10
6
Ist die Verbindungsverdrahtung richtig ? 10
7
Nimmt das System die Befehle des Reglers an ? -
8
Ist die Tauwasserleitung richtig angeschlossen, aufgehängt und isoliert ? 10
9
Prüfen Sie nach, ob daß Kondenswasser richtig abfliessen kann und keine
Leckstellen vorhanden sind ?
-
10
Ist die Luftverteilung wie gewünscht ? -
-11-
CWM (L) USER MAINTENANCE
ISOLATE THE UNIT ELECTRICALLY BEFORE COMMENCING ANY MAINTENANCE WORK
In order to maintain maximum efficiency of this unit, it is important that the filters behind the return air
grilles are cleaned regularly.
To remove filters:
Clean the filters by washing in tepid water, vacuuming or by tapping gently outside the building.
To replace filters:
THE UNIT SHOULD ALWAYS BE USED WITH A FILTER. FAILURE TO DO SO WILL CAUSE A
DECLINE IN UNIT PERFORMANCE AND MAY RESULT IN MALFUNCTION
We recommend that, in order to prolong the life and maintain performance of CWM (L) units, they are
regularly serviced by an TEV Ltd installer/dealer.
--o--o--O--O--O--o--o--
-12-
-13-
The PCB is factory set for CWM L units.
No reconfiguration is needed, with or without an electric heater.
CWM L PCB CONFIGURATION
CWM L PCB (FACTORY CONFIGURED FOR CWM L UNITS: JUMPER JMODE NOT REQUIRED)
--o--o--O--O--O--o--o--
OPTIONAL CWM L REMOTE CONTROLLER
CWM L units use an electronic remote control (available separately, part number 55500309).
Any convenient number of units may be operated with one controller.
Infrared operation
Slide open the front cover: press down on the top at
the marked area and push off the cover.
Insert the batteries ensuring correct polarity.
The display will blank and reset.
Replace the cover by sliding into position.
Operating instructions are on page 16.
For convenience, the wall mounting bracket may be secured
to a wall and used to park the controller.
--o--o--O--O--O--o--o--
KEY TO WIRING DIAGRAMS
B Brown W White L Live S1 Condensate sensor
BL Blue Y Yellow M1 Fan motor TP1 Thermal protector
BK Black G/Y Green / yellow M2 Cond pump motor TP2 Thermal fuse
GRY Grey C Capacitor N Neutral V1 Cooling valve
P Pink EH Electric heater PE Protective earth V2 Heating valve
R Red F Fuse RY Relay - -> - - Not supplied
V Violet H Heat / heater RT Remote thermostat
-14-
CWM WIRING DIAGRAM
CWM L WIRING DIAGRAM
OPTIONAL ACCESSORIES
-15-
'L' INFRARED REMOTE CONTROL
• The handset should be pointed towards the unit.
• Two seconds after the last button press, the whole displayed programme is automatically transmitted.
• The unit responds with 1 beep.
• The transmit symbol A flashes whilst transmission is taking place.
• Displayed values may be re-sent at any time by pressing the pink H button twice.
1. Remote Controller Power Up
Slide down the cover and insert The initial display will show:
two "AAA" size 1.5V batteries.
COOL
HIGH FAN SPEED
TEMPERATURE
'ON' TIMER SWITCHED OFF
TIME 'OFF' TIMER SWITCHED OFF
2. Setting Cool/Heat/Dry Modes
COOL - Unit cools when required but cannot heat
DRY - Unit removes moisture by cycling cooling at low speed,
humidity is reduced, but room temperature is not changed.
FAN ONLY - No cooling or heating - fan only
HEAT - If heating is available, unit heats when required but cannot cool.
AUTO COOL/HEAT - Unit cools or heats when required (if heating is available)
3. Setting the Fan Speeds
Repeated pressing of the 'fan speed selection' button selects low, medium, high and auto speeds. In 'auto' selection, the fan runs at
high speed when there is a difference of more than 2°C between the room temperature and the set (required) temperature, and low
speed when less than 2°C.
4. Setting the Temperature
Press the ‘up’ or ‘down’ 'set temperature' button to alter the display between 16°C and 30°C.
By holding both buttons down, the display is changed between °C and °F.
5. Setting the Clock (Current time)
The ‘up’ and ‘down’ buttons must be held down for 3 seconds before they operate. Continue to hold the button down for rapid change.
6. Programming the Timer
The 24 hour timer can have one ON command or one OFF command or one ON/OFF cycle in a 24 hour period. Blank ON and OFF
timer windows indicate that the timer is not programmed.
7. Setting the ON Time
-16-
Press the TIMER ON set ‘S’ button and step to the required ON time. Hold the button down for repeated stepping. Press the TIMER
ON ‘C’ button to cancel the ON time.
8. Setting the OFF Time
Press the TIMER OFF ‘S’ button and step to the required OFF time. Hold the button down for repeated stepping. Press the TIMER OFF
‘C’ button to cancel the OFF time.
9. Only ON Time Selected
Unit will turn ON at the selected time and stay ON.
10. Only OFF Time Selected
Unit will turn OFF at the selected time and stay OFF.
11. Use of the Pink H
ON/STANDBY button when time programmes are selected
At any time, pressing the Pink button will either start the unit or return it to standby mode. The unit will remain at this condition unless
an appropriate ON or OFF time has been programmed.
12. Cold Start
In Cool or Heat mode, not Auto, after more than 3 days without power, or after 2 hours of non-operation, the set temperature is
automatically raised (in heating mode) or lowered (in cooling mode) by 2°C until this temperature is reached or the unit has run for 20
minutes after which the unit operates with the displayed temperature. This decreases the time taken to reach set point.
13. Displays
Heat Fan Dry Cool
DIAGNOSTICS
F4ID
Amber Red Red Green
OFF OFF OFF OFF
No power, manual OFF, timed OFF,
condensate high level, fault in condensate
control
OFF
ON
OFF
ON
Cooling mode selected
BLINKS ON
OFF
ON
AUTO - predominantly cooling
ON ON
OFF OFF Heating mode selected
ON ON
OFF
BLINKS
AUTO - predominantly heating
OFF
ON
OFF OFF Fan mode selected
OFF
ON ON
OFF Dry mode selected
Diagnostics
OFF
BLINKS x 4
OFF OFF Room sensor missing
OFF
BLINKS x 4
OFF OFF Indoor coil sensor missing
14. Commands Refused
a. Attempts to set temperatures outside the display range are not transmitted.
b. If heating commands are refused, the installer's programming is incorrect - call the engineer.
15. Battery Replacement
It is advisable to replace the batteries as soon as the display begins to fade. Correct transmission cannot be guaranteed if the battery
is failing.
2 x 1.5V AAA
batteries
16. Power Cuts
The unit permanently memorises its settings.
17. User Maintenance
Isolate the unit at the mains supply before commencing any maintenance work.
The unit should always be used with a filter. In order to maintain efficiency it is important that the filter behind the air intake grille is
cleaned regularly:
! Remove the filter(s) from behind the air intake grille.
! Wash the filter (in tepid water only) and shake dry before use.
! Alternatively tap the filter gently to remove dust or vacuum clean.
! To clean the unit use soap or a non-scratch liquid cleaner.
–N–N–F–F–F–N–N–
-17-
ISOLATE THE SYSTEM PRIOR TO FITTING THE KIT IF THE UNIT HAS BEEN INSTALLED
ELECTRIC HEATER KIT
CWM kW Part No. CWM L kW Part No.
55 1.3 55600401 55 1.3 55600411
75 1.8 55600402 75 1.8 55600412
105 2.3 55600403 105 2.3 55600413
ITEM QTY DESCRIPTION ITEM QTY DESCRIPTION SUPPLIED IN KITS
1 1 Coil/element/fuse assy 5 2 Coil clip 55600402/403/412/413
2 3 No.8 screws 6 1 Relay assy 55600401/402/403
3 4 Cable clamps 7 2 No.6 screws 55600401/402/403
4 2 Cable ties 8 1 Terminal 55600411/412/413
9 1 Jumper bar 55600411/412/413
This kit is for use on all CWM and CWM L wall mounted units: it cannot be fitted to CWM L units which have an LPHW
coil assembly
It is easier to fit this kit prior to installing the unit.
1. CABINET REMOVAL
2. FITTING THE COIL/ELEMENT/FUSE ASSEMBLY (numbers refer to diagrams)
a) Secure the assembly to the front of the coil, with the thermal cutout at the top (3xNo.8 screws).
1
b) Ensure there is a space of 20mm between the top of the drain tray and the bottom of the heater coil.
1. On CWM (L) 75 / 105 position the coil clips
2
-18-
3. WIRING CWM L
a) Route the harness from the fuse along the back panel using the cable clamps, ensuring the harness is above the cabinet
fixing brackets
3
b) Remove and discard the violet wire between the pcb relay and terminal 7.
Connect the black wire from the fuse assembly to the PCB relay,
4
Route the blue wire alongside the existing harness and connect to terminal N on the terminal rail.
Use the cable ties provided to tidy the wires.
c) Connect the earth wire to the nearest cabinet fixing bracket
5.
d) Use the cable ties provided to tidy the wires.
4. WIRING CWM
a) Connect a black wire from the fuse assembly to No.14 on the kit relay
6.
b) Fit the relay to the back panel using the 2x No.6 screws 7.
c) Route the harness from the fuse along the back panel using the cable clamps, ensuring the harness is above the
cabinet fixing brackets 3.
d) If there is no free space in the existing “N” neutr al terminal, insert the terminal provided and fit the jumper bar
between the existing &”new” terminal.
e) Connect the blue relay wire to terminal N on the terminal rail.
f) Connect the black relay wire to terminal L1 on the terminal rail.
g) Connect the orange relay wire to terminal 7 on the terminal rail.
h) Connect the second black wire from the fuse assembly to the black wire from the element, via the connector.
i) Connect the blue wire from the element to terminal N on the terminal rail.
j) Connect the earth wire clip to the nearest bracket as shown 5.
k) Use the cable ties provided to tidy the wires.
--o--o--O--O--O--o--o--
-19-
5m HIGH CONDENSATE PUMP KIT FOR CWM (L) UNITS 55600420
ITEM QTY DESCRIPTION
1 1 Pump Assembly
This kit is for use on all versions of CWM and CWM L units and is for condensate removal where a lift of up to 5m is
required.
The pump runs on demand.
A high level alarm will switch off the cooling signal until condensate has dropped below a pre-set level.
It is easier to fit this kit before installing the unit.
IF THE UNIT HAS BEEN INSTALLED, ISOLATE THE SYSTEM BEFORE FITTING THE KIT
.
1. CABINET REMOVAL
2. FITTING THE KIT
a) Fit the pump assembly into its temporary position (Fig.1) by sliding the hooks on the pump assembly bracket into the
cut-outs on the back panel side flange.
Note: This is not the final position, but it makes installation easy.
b) Fit the sensor/filter inside the drain tray (Fig.2). Do not over tighten the screw.
Fig.1 Fig.2
-20-
3. WIRING
a) Locate the black, blue and red wires in the unit near the pump and remove the cover
from the black and blue wires.
b) Connect: (i) Black wire to terminal L on the pcb
(ii) Blue wire to terminal N on the pcb
The plastic cover over the pcb can be removed for convenience: retain the cable tie.
c) Cut the centre loop of the red wire and strip back both ends by 5mm. Connect the
bared ends to the black de-mountable plug TB1 (non-polarized) on the pcb.
d) Fit the spare earth wire (clip fitted) to the back panel side flange.
If the plastic cover was removed, secure in its original position with the original cable
tie.
Unhook the pump assembly and fit in its final position (Fig. 3).
Connect a drain hose to the white connector when installed.
4. TESTING THE PUMP AND CONTROL
a) Connect a suitably fused supply to the unit (refer to the unit installation instructions). Allow approximately one minute
for the controls and sensor to stabilize.
b) Slowly add water to t he c ondensate tray sump until the pump runs. Initially the pump will be noisy until the air in the
hose has been expelled. It is possible that, on this first cycle, the pump will run dry for a short period (indicated by
noise).
c) Add more water to the sump and the pump will cycle in the normal manner.
d) With the system in cooling mode, continue adding water to the sump until it reaches the higher of the sensor probes.
The cooling cycle will shut down, and the pump will continue to run until the water has dropped below the level of this
probe.
e) Replace the cabinet.
Note: Whenever the electrical supply to a unit fitted with a condensate pump and controls is interrupted, a delay of up
to 1 minute will occur before the compressor or the pump will start when the supply is reinstated.
5. TROUBLE SHOOTING
Unit will not cool No mains supply to the control board
Pump does not run Fuse on control board blown (T315mA x 20mm)
Sensor disconnected from control board
Cooling is interrupted Restriction in pump flow allowing level to rise and trip overflow circuit
Check for blockage or kink in hoses
Condensate at high level - tripping overflow circuit
Filter blocked - Remove and clean
Excessive pump noise Air leak in hoses and/or joints
Pumping without water in sump - control board fault
Loose connection between sensor and control board
Loose fuse, intermittent mains supply to control board
Water syphoning due to lack of air break
6. APPLICATION NOTES
1. The pump will work against a 5m head. Flow rate is highest with minimum head.
2. Long lengths of drain pipe should not be exposed to the outdoor ambient, otherwise freezing of condensate may occur
during winter operation.
3. It is not advisable to have the outlet of the drain well below the position of the pump, otherwise a syphon effect may open
the pump valves and cause noise by admitting air.
4. For normal applications, i.e. where the drain is level or above the pump or within 3 feet below it, no extra check valves
are needed; the pump has its own internal check valves.
5. Ensure that no hose is kinked, as this could seriously affect the pump performance.
6. Clean the filter at regular intervals.
--o--o--O--O--O--o--o--
Fig.3
-21-
If, as a result of fitting this kit, more than one supply is taken into a unit, that unit must be marked:-
"Two, (or more if applicable), supplies are taken into this equipment.
Isolate both, (all), before undertaking any maintenance work."
PROGRAMMABLE TIMER KIT 52500151
This kit can be used to give ON/OFF switching of the mains voltage control circuits of CWM units where the total current
does not exceed 3 Amps.
ELECTRIC HEATER CURRENTS CANNOT BE SWITCHED DIRECTLY.
It is not required for CWM L units which have built in timers.
ITEM QTY DESCRIPTION
1 1 7 Day Programmable Timer
2 1 In Line Fuse Carrier
3 1 5 Amp Fuse, 1" x 1/4"
4 1 Terminal
PROGRAMMER SPECIFICATION:
Type: Digital electronic 230V, 50Hz
Programme: 7 day
Setting Resolution: 1 minute
Selection Switch: "OFF",
"TMD " (TIMED)
"CON " (CONSTANT ON)
"ADV " (ADVANCE)
Max. Switched Current:3 A (fan load)
The timer will accommodate 0.75mm2 to 2.5mm2 wires.
Three core cable is required between the timer and the air conditioning unit.
The timer motor must be connected to an uninterrupted supply source.
TIMER MOUNTING
1. Carefully unpack and identify the components.
2. If the unit is to be surface wired, remove the appropriate knockouts in the backplate. Screw the backplate to the
wall with No. 8 wood screws through the fixing holes.
3. If the backplate is to be fixed to a BS4662 single gang plaster depth box, use 3.5mm machine screws.
WIRING FOR ON/OFF SWITCHING
4. a) Wire timer terminal 'L' to unit terminal 2.
b) Use the terminal provided to connect terminal 4 to live (terminal L, remote controller RCC 30 [97200211] ).
c) Wire timer terminal 'N' to unit terminal N
5. Discard the in-line fuse carrier.
6. Plug in the unit and secure the screws.
7. Program as described in the separate timer instructions.
--o--o--O--O--O--o--o--
-22-
PIPE THERMOSTAT KIT 96200070
This kit is for fan coils on 2 pipe systems supplied from a reverse cycle chiller (or chiller + boiler) and fitted with an auto
changeover thermostat, to enable a single valve to operate in both heating and cooling modes. It prevents the room
thermostat calling for cooling and the valve being opened when the flow is hot water, and vice versa.
The thermostat must measure the flow temperature from the reverse cycle chiller and should be sited as below.
ITEM QTY DESCRIPTION
1 1 Pipe thermostat
2 1 Sachet of heat sink paste
3 1 Spring band
4 1 Plastic banding
5 2 Plastic clips
ISOLATE THE SYSTEM ELECTRICALLY PRIOR TO INSTALLATION OF THIS KIT
1. The pipe thermostat should be secured to the hot/chilled water pipe using the spring clip, or plastic banding plus clips:
typically set to 40°C. Use the heat sink paste to ensure a good thermal bond with the pipe
2. Connect pipe thermostat terminal 2 to the cooling signal, (from the unit)
(Or from room thermostat, if unit is gravity drain).
Connect pipe thermostat terminal 3 to the heating signal, (either from the unit or room thermostat).
Connect pipe thermostat terminal 1 to the live on the valve and the neutral valve terminal to mains neutral.
CWM CWM L
--o--o--O--O--O--o--o--
-23-
INSTALLATION INSTRUCTION FOR CWM (L) VALVE CONNECTIONS
PART DESCRIPTION ITEM QTY DESCRIPTION
97300405 FFO 4 port valve CWM 55 (CW) 1 2 Pipe assy. CW only
97300406 FFO 4 port valve CWM 75 (CW) 2 4 Pipes assy LPHW only
97300407 FFO 4 port valve CWM 105 (CW)
97300510 FFO 4 port valve (LPHW)
97300424 FFO 2 port valve (CW)
97300425 FFO 2 port valve (LPHW)
1. The pipes supplied are to assist installer
connection to the appropriate valve.
2. Use the supplied nuts and olives, as Fig. 1.
(The sleeve is only for installers 0.7mm
wall pipe, otherwise discard)
3. The installer must
insulate CW pipework
fully up to the valve connections
.
4. The installer must supply a 15mm connector
(sweat or compression) for each 2 port valve. Fig. 1
--o--o--O--O--O--o--o--
RETURN AIR SENSOR 97200212 (FOR RCC 30 REMOTE CONTROLLER 97200211)
-24-
This instruction is also applicable to return air sensor spare 04000012S
The sensor can be fitted to the return air inlet to an air conditioning unit to improve operation eg. if the wall thermostat
is placed outside the space being conditioned, or if there is considerable stratification in a room with a high ceiling,
where the wall thermostat would not measure a representative temperature.
ITEM QTY DESCRIPTION
1 1 Sensor (4m lead)
2 2 Tie wrap
ISOLATE THE SYSTEM ELECTRICALLY PRIOR TO INSTALLATION OF THE SENSOR
1. Connect the sensor to terminals B1 and M , as shown (polarity is unimportant).
Changeover to the remote sensor is automatic on power up of the controller.
2. Tie wrap the sensor to a suitable place in the return airflow, where it will soak in a representative temperature.
3. After installation, adjust the thermostat to confirm satisfactory operation.
Sensor input B1-M carries mains potential.
If the sensor cable needs to be extended, the cables used must be suitable for mains voltage.
--o--o--O--O--O--o--o--
FAULT FINDING
CONDITION POSSIBLE CAUSE ACTION
A Indoor fan motor will not run
No electric supply at socket or switched fuse
box
Check fuse rating and replace if necessary.
Check for loose electrical connections
Unit wiring fault Check wiring and connections
Fan motor capacitor defective Replace if faulty
Fan motor defective Replace if faulty
B Inadequate cooling or heating Dirty coil fins/filter Clean if blocked
Fan motor not running at required speed As in section A
Faulty thermostat or incorrectly set Replace if faulty
C
System runs for long periods and will
not cycle
Unit underrated for conditioned area Check heat load against capacity
Thermostat not operating correctly Check wiring, position of phial and operation
D Noisy unit Worn motor bearing Replace motor
Casing or piping vibration Check cause and rectify
Loose parts or mounting Find and tighten
Bent fan blade Replace fan
E Water leaking from unit Blocked drain or filter Clear obstruction
Units with a lift pump or condensate
pump
No supply to pump or loose connection Secure the supply
Pumping slowly Check drain pipes; if clear, replace pump
Pump windings shorted Replace pump
Fouled sensor (5m condensate pump
only)
Clean sensor
F Pump always runs Faulty sensor or pcb Replace sensor or pcb
G No heating Controls not set for heating Reset
Unit wiring fault Check wiring and connections
Dirty coil fins/filter Clean
Faulty thermostat Check for signal; replace if faulty
Faulty heater element Replace
Faulty heater cutout Replace, (check for short circuiting)
No heaters/LPHW coil fitted Fit electric heater or LPHW
Heating valve not operating Check wiring, actuator
CWM L LED display diagnostics:-
Cool Dry Fan Heat
DI4F
Green Red Red Amber
BLINKS x 4
OFF OFF OFF Room sensor missing
BLINKS x 4
OFF OFF OFF Indoor coil sensor missing
BLINKS x 2
OFF
BLINKS
OFF Pump fault
--o--o--O--O--O--o--o--
-25-
EXPLODED VIEW OF CWM (L) with COMPONENT IDENTIFICATION
1 Back panel 16 LPHW pipes (bottom exit) 31 Motor
2 Condensate pump PCB 17 LPHW pipes (top exit) 32 Fan support bracket
3 Condensate pump bracket 18 4 port LPHW valve 33 IR receiver PCB (CWM L)
4 Condensate pump 19 2 port LPHW valve 34 Blanking plate (CWM L)
5 Scroll 20 LPHW coil 35 Main PCB (CWM L)
6 Case fixing bracket 21 Heater coil 36 Terminal mounting bracket
7 Drain tray clip 22 Heater elements 37 Electrics panel
8 CW coil (rear) 23 Heater coil retaining clip 38 IR PCB mounting bracket
9 Fan 24 Heater cutout bracket 39 Fan guard
10 R/H coil support bracket 25 Heater cutout 40 Capacitor (CWM shown)
11 CW pipes (shown top exit) 26 CW coil (front) 41 Terminals (CWM shown)
12 4 port CW valve 27 2 port CW valve 42 De-ice thermostat (CWM)
13 Condensate pump sensor/filter 28 Air flow cut-off 43 Heater relay (CWM)
14 Sensor bracket 29 L/H coil support bracket 44 Wall mounting bracket
15 Drain tray 30 Resistor
-26-
EXPLODED VIEW OF CASE
1 Cover ( L/H) 5 Vertical air deflection vane 9 Horizontal air deflector vane (lower)
2 Cover (centre) 6 Grille (R/H) 10 Horizontal air deflector vane (upper)
3 Cover (R/H) 7 Grille (centre) 11 Connecting rod
4 Filter 8 Grille (L/H) 12 Blank (CWM): IR lens (CWM L)
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