7.0 Site Requirements
13
7.5
Ventilation of Compartments
1. Where the boiler is installed in a cupboard or
compartment, no air vents are required for cooling
purposes providing that the minimum dimensions
below are maintained.
Sides
25mm
Top
200mm
Bottom
200mm
Front
100mm
2. Any compartment should be large enough to
house the boiler only.
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. 15).
3. Ensure that the pipework from the meter to the
appliance is of adequate size.
(22mm recommended at the appliance).
Do not
use pipes of a smaller diameter than the boiler
gas connection.
7.7
Electrical Supply
1. External wiring must be correctly earthed,
polarised and in accordance with current
I.E.E.
W
IRING
R
EGULATIONS
.
2. The mains supply is 230V ~ 50Hz 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.
7.8
Condensate Drain
NOTE:
Ensure the discharge of condensate
complies with any national or local regulations
in force.
1. The condensate outlet terminates in a 1” BSP
nut and seal for the connection of 21.5mm (
3
/
4
in)
plastic overflow pipe which should generally
discharge internally into the household drainage
system. If this is not possible, discharge into an
outside drain is acceptable.
2. The pipe should run internally as much as
possible and with a 10° (1 in 6) fall to dispose of
condensate quickly to avoid freezing.
Gas Service Cock
Fig. 15
