15
Fig. 13
4.6 CONNECTING THE GAS AND WATER
The appliance is supplied with a 15mm service valve for
the gas connection and 22mm copper to brass adapters for
the flow and return connections. The service valve is of the
compression type. The accessories pack also contains
sealing washers etc, for use with the service valve and
copper connections.
When connecting pipe work to the valves, tighten the
compression end first then insert the sealing washers
before tightening the valve to the appliance.
NOTE
It will be necessary to hold the valve with one spanner
whilst tightening with another.
4.6.1 GAS (fig. 6)
The appliance is supplied with a 15mm service valve,
connect a 15mm pipe to the inlet of the valve and tighten
both nuts.
NOTE
It will be necessary to calculate the diameter of the gas
supply pipe to ensure the appliance has an adequate
supply of gas.
4.6.2 FLOW & RETURN (fig. 6)
The appliance is supplied with 22mm copper to brass
adapters for the flow and return service connections.
NOTE
The flow and return pipe work can be routed vertically
through the rear of the appliance via the 2-holes located
in the appliance back frame.
Depending on system requirements, it may necessary to
increase the size of the flow & return pipe work after the
service connections.
4.6.3 CONDENSE PIPE
During normal operation the boiler produces condense
which is collected in a trap located in the lower part of the
boiler. A flexible pipe (condense outlet pipe) is connected
to the outlet of the trap. The flexible pipe must be
connected to a plastic waste pipe only. The plastic waste
pipe must have a minimum of a 3º fall towards the drain.
Any external run of pipe should be insulated to prevent
the risk of freezing.
CONNECTING THE CONDENSATE OUTLET
Gently pull the condense outlet pipe down from its location
inside the boiler until approximately 100mm protrudes from
the underside of the boiler. Connect a suitable plastic (not
copper) pipe (no less than 20mm diameter) to the outlet
pipe and ensure it discharges in accordance with building
regulations or other rules in force.
4.7 ELECTRICAL CONNECTIONS
The electrical supply must be as specified in section 3/
3A. A qualified electrician should connect the electrical
supply to the appliance. If controls – external to the
appliance – are required, a competent person must
undertake the design of any external electrical circuits,
please refer to section 8 for detailed instructions. ANY
EXTERNAL CONTROL OR WIRING MUST BE SERVED
FROM THE SAME ISOLATOR AS THAT OF THE
APPLIANCE. The supply cable from the isolator to the
appliance must be 3-core flexible sized 0.75mm to BS
6500 or equivalent. Wiring to the appliance must be rated
for operation in contact with surfaces up to 90ºC.
Fig. 12