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5.3 Water Circulation System
Complete the water connections to the boiler.
Fill, vent and flush the system.
Check for any water leaks and put right.
5.4 Safety Valve Discharge
Fit a suitable discharge pipe to the safety valve and route it to
outside the building so that any discharge can be seen but will
not cause injury to persons, damage to property or any electrical
installation.
5.5 Gas Connection
Make the gas connection to the Rc
diagram 6.1.
Check for leaks using a suitable leak detection fluid.
5.6 Control Box Removal
Remove the electrical control box securing screws, see diagram
5.8. Slide the box forwards and release, hook it onto the lip
bracket at the front, see diagram 5.8.
5.7 Electrical Connection
WARNING. This boiler must be earthed.
Take care not to damage any internal wiring and capillaries.
Take the plastic cable retaining clip, from the loose items pack,
peel off the backing paper and position it in a suitable place to
secure the incoming cable.
Using heat resistant (85
o
0.2mm) to the current issue of BS6500 Table 16 and of a
suitable length, thread through the cable clamps, secure into
the plastic clips and connect to appropriate terminals, see
relevant diagram 5.9 or 5.10.
Standard colours are, brown - live (L), blue - neutral (N) and
green and yellow - earth (E).
SWING
BRACKET
SECURING
SCREWS (2)
NOTE:
PIPES REMOVED
FOR CLARITY
5 Boiler Installation
1
/
in gas service cock, see
2
C) cable of at least 0.75mm
5mm
MOUNTING
BRACKET
Diagram 5.3
The mains cable outer insulation must not be cut back external
to the cable clamp.
Make sure the cable is suitably secured.
When making connections, make sure that the earth conductor
is made of a greater length than the current carrying conductors,
so that if the cable is strained the earth conductor would be the
last to become disconnected.
5.8 Gravity Domestic Hot Water Systems
Fit the yellow link cable, supplied in the fittings pack, between
terminal K1 and K2, see diagram 5.9.
5.9 Pump Connection
FULLY PUMPED
The pump must be connected directly to the control box, as
shown in diagram 5.10 threading the cable through the cable
clamp in the side of the control box.
PUMPED HEATING AND GRAVITY DOMESTIC HOT WATER
The pump must be wired into the central heating remote
controls.
Make sure that the supply cable and all external cables are
secured and away from hot surfaces.
2
(24/
ELECTRICAL
CONNECTIONS
REAR SECURING SCREW (2)
(SLACKEN but do not remove)
GASKET
19
AIR PRESSURE TUBES
CLEAR RED
SECURING
SCREW (2)
Diagram 5.4
221658B
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