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• Close the valves and remove the filling loop.
If you experience any difficulty with the
operation of the boiler, switch off the
boiler immediately at the fused spur iso-
lation switch and contact your Installer
or an approved Service Engineer.
Air introduced into the boiler during this fill-
ing process will vent through the automatic
air purger fitted to the boiler. You may also
find it necessary to vent air from your radia-
tor circuit using your radiator key, however
be aware that excessive venting will cause
the pressure in the system to drop.
Always ensure that the pressure gauge is
set at the required pressure.
2.3
Ignition
• Check that the valves located in the lower
part of the boiler are open Fig. 2.3.
Open position
Fig. 2.3
• Turn on the electricity supply to the boil-
er switching on the fused spur isolation
switch. The appliance operation light 9
(Fig. 2.4) will flash every 4 seconds (stand-
by condition).
• To operate the boiler, position the function
selector 7 as in Fig. 2.4. The appliance op-
eration light 9 will flash every 2 seconds
INSTRUCTIONS FOR USE
(operating boiler).
9
Fig. 2.4
2.4
C.h. circuit temperature
The output temperature of c.h. water is ad-
justable from a minimum of about 40°C to a
maximum of about 85°C (Fig. 2.5), by turn-
ing the function selector (7).
Adjustment of c.h. output on the boiler is
automatic.
Minimum
Maximum
Fig. 2.5
The greatest output pre-set in the factory
can, however, be reduced in level accord-
ing to actual system requirements; this does
not affect the maximum output in d.h.w. op-
eration.
Such adjustments must be carried out by a
qualified person; therefore we advise you to
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