Heronhill - for all your Airking requirements
Installation Instruction
40101102-09
Page 1 of 6.
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
If a condensate pump kit is used it 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
G
H
J
K
OPERATING
WEIGHT
(kg)
PIPE CONNECTIONS
( mm OD)
No. OF
OUTLETS
MINIMUM
No. OF
OUTLETS
TO BE
USED
C
CRS
D
CRS
E
CRS
F
427
344
688
260
332
130 195 195
22
15 15 15 15
15
3 (A,C,E)
1
W
X
Y
Z
DRAIN
TRAY
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
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Fax: 01823 665807
Heronhill - for all your Airking requirements
Installation Instruction
40101102-09
Page 2 of 6.
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.
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
25
463
1076
427
344
981 260 332 421 486 486
26
15 15 15 15
15
3 (A,C,E)
1
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
Tel: 01823 665660
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Fax: 01823 665807
Heronhill - for all your Airking requirements
Installation Instruction
40101102-09
Page 3 of 6.
PIPE CONNECTIONS
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:Chilled water: Models 25 and 45: 15mm OD:
Models 65 to 175: 22mm OD
LPHW: All models: 15mm OD
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, CONTROLS and DATA
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 codes. 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.
Site fitted controls should be connected as specified on the wiring diagram found on the inside face of the electric box
cover: typical wiring diagrams are shown on pages 5 and 6, but these are for reference only as many CWD units have
a unique congiguration
CWD Maximum Running Current in Amps (At 230 V, 50 Hz).
Model
25
45
65
95
105
115
165
175
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
RECOMMENDED FUSE SIZES (Amps)
Model
25
45
65
95
105
115
165
175Stand
With Electric Htg
10
10
16
20
20
20
25
25
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.
Tel: 01823 665660
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
95
270
655
1040
3
2
3
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
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Fax: 01823 665807
Heronhill - for all your Airking requirements
Installation Instruction
40101102-09
Page 4 of 6.
Installation of a Remote Controller
Select a position to mount the thermostat taking into account the following comments:
a. The thermostat must be mounted on a flat surface within the area conditioned by the unit to which it is
connected.
b. Avoid draughts, heat from radiators, temperature variations from hot/cold water pipes and direct sunlight.
c. Avoid corners of the room where air is likely to stagnate.
d. Avoid direct air discharge from the unit onto the thermostat.
e. Avoid positions where the thermostat may be covered or obscured.
f. If the room contains pillars, mount on the side of the pillar furthest away from the unit.
If thermostat 97200211 (RCC 30) is used:The thermostat should be wired with 7 core double insulated cable, 0.5mm2 minimum, preferably in plastic conduit for
good appearance.
Using a flat-bladed screwdriver in the slot at the bottom of the casing, lever off the cover.
Mount the backpanel directly to a wall or onto a plinth, using the fasteners supplied.
Wire between the remote controller and the unit as shown on the unit wiring diagram: the table below is typical only:
OPERATION
RETURN AIR
MAX
MED
MIN
RCC 30
B1, M
NEUTRAL LIVE
N
L
HEAT COOL
Y11
Y21
Q3
Q2
Q1
Typical CWD 25
*97200212
N
L
9
7
5
3
1
Typical CWD 45-115
*97200212
N
L
9
7
5
3
1
Typical CWD 165
*97200212
N
L
9
7
5
3
1
Typical CWD 175
*97200212
N
L
9
7
6
4
2
*Optional return air sensor 97200212 can detect return air temperature at the unit rather than the controller.
DIP switches at the bottom rear of the controller can be set on site to suit the application.
DIP switch
Function
ON position
OFF position
1
Fan control
Fan control is temperature dependent in all Fan control in normal operation is
operating modes
temperature independent
2
Operating mode changeover
via external switch
Changeover between normal operation
and energy saving mode
Changeover between normal operation
and standby
3
Action of switch for externally
operated mode changeover
Changeover activated when contact of
switch is closed
Changeover activated when contact of
switch is open
4
Standby
Frost protection disabled
Frost protection enabled
5
Switching differential
1K in heating mode, 0.5K in cooling mode
4K in heating mode, 2K in cooling mode
6
Dead zone in normal operation
2K
5K
= factory settings
Tel: 01823 665660
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Fax: 01823 665807
Heronhill - for all your Airking requirements
Installation Instruction
40101102-09
Page 5 of 6.
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.
WIRING DIAGRAMS
CWD 25/95/105/115
CWD 45/65
Tel: 01823 665660
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Fax: 01823 665807
Heronhill - for all your Airking requirements
Installation Instruction
40101102-09
Page 6 of 6.
CWD 165
CWD 175
TEV Ltd.
Armytage Road, Brighouse,
West Yorkshire. HD6 1QF, UK.
Tel: +44 (0) 1484 405630.
Fax: +44 (0) 1484 405620.
Email: sales@quartz.co.uk
Tel: 01823 665660
www.heronhill.co.uk
Fax: 01823 665807