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WD52/0/1997
Connections
3.7
GAS SUPPLY
Connect the gas supply to the appliance. Details of gas supply requirements are given in
Chapter 2 - Section 2.6 Gas Supply. Supply of adequate gas pressure (with the boiler
running) is critical to ensure reliable operation of the boiler.
Connections
3.8
ELECTRICAL SUPPLY
NB:
This boiler includes an optional timed (2 minute) pump over-run facility. If this
pump over-run facility is not required the pump may be wired externally to the
boiler.
The entry point(s) for the electrical supply cable(s) is in the base of the appliance (see
Section 2.2 Service Connections fig. 2.1.2) via two cordgrip bushes. Feed the cable(s)
through its bush and route inside the cabinet to the connection strip located to the front
bottom right of the cabinet.
1.
The electrical supply must be as specified in Chapter 2 - Section 2.4 Electrical
Supply.
WARNING :
2.
All external controls and wiring must be suitable for mains voltage.Supply wiring
should be in 4 core PVC insulated cable not less than 1.0mm
16 (material code H05VV-F). Pump wiring from the boiler pump connection
should be in 3 core PVC insulated cable not less than 0.5mm
16 (material code H05VV-F).
3.
The permanent live supply connection may be via a 10 amp fused double pole
switch, serving only the boiler. (Refer to Chapter 2 - Section 2.4 Electrical Supply).
The system controls and 2A switched supply for the boiler must also be supplied
via this isolator.
4.
Securely tighten the terminal screws and route the cable through the re-openable
cable clips. Ensure all cables are secured and that the cord grip bush is tightened
to securely grip the main cable at entry to the cabinet.
The supply cable(s) must be connected to the main terminals as follows:-
The pump cable must be connected to the pump terminals as follows:-
NB:
Ensure connection is made such that if the cable slips in its anchorage the current
carrying conductors become taut before the earthing conductor.
Optional Wiring Method:
Alternatively, the appliance may be controlled by a single 230V supply fused at
10A which is switched by external controls. This can be achieved by placing a link
Installation & Servicing Instructions
Chapter 3 : Installation
: 35 mm compression X 35 mm compression.
: 0.75 inch BSP male.
THIS APPLIANCE MUST BE EARTHED.
N
-
Blue wire (Neutral) for 10A permanent and 2A switched
supplies
PL
-
Brown wire (Live) 10A permanent supply
SL
-
Brown wire (Live) 2A switched supply.
-
Yellow/Green Wire (Earth)
N
-
Pump neutral wire (blue)
L
-
Pump live wire (brown)
-
Pump earth (yellow/green)
The boiler circulating pump should not have a locked rotor current rating
exceeding 2A.
The Keston 130 Condensing Boiler
2
to BS 6500 Table
2
to BS6500 Table
Page : 19
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