7.0 Site Requirements
14
7.5 Ventilation of Compartments
1. Where the appliance is installed in a cupboard
or compartment, no air vents are required.
2. BS 5440: Part 2 Clause 4.2 refers to room
sealed appliances installed in compartments. The
appliance will run sufficiently cool without
ventilation.
7.6 Gas Supply
1. The gas installation should be in accordance
with BS6891.
2. The connection to the appliance is a 22mm
copper tail located at the rear of the gas service
cock (Fig. 9).
3. Ensure that the pipework from the meter to the
appliance is of adequate size. Do not use pipes of
a smaller diameter than the boiler gas connection
(22mm).
7.7 Electrical Supply
1. External wiring must be correctly earthed,
polarised and in accordance with current I.E.E.
W
IRING REGULATIONS.
2. The mains supply is 230V ~ 50H
z
fused at 3A.
NOTE: The method of connection to the
electricity supply must facilitate complete
electrical isolation of the appliance.
Connection may be via a fused double-pole
isolator with a contact separation of at least
3mm in all poles and servicing the boiler and
system controls only.
Fig. 9
Gas Service Cock
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