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proved Service Engineer.
Air introduced into the boiler during this filling
process will vent through the automatic air
purger fitted to the boiler. You may also find
it necessary to vent air from your radiator cir-
cuit 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 boiler,
switching on the fused spur isolation switch.
The LCD display displays the state within
which the boiler is found (last memorised)
Fig. 2.4.
INSTRUCTIONS FOR USE
Fig. 2.4
C.H. functioning
• Press the key 12 for 2 seconds until
symbol appear on the display Fig. 2.5.
12
Fig. 2.5
The LCD display displays the boiler tempera-
ture (primary circuit) and
symbol slowly flashes Fig. 2.6.
Fig. 2.6
2.4
C.H. circuit temperature
The output temperature of C.H. water can be
adjusted by pressing keys 13 (reduce) and 14
(increase) (Fig. 2.5) from a minimum of about
25°C to a maximum of about 85°C. Press one
of the two keys once to display the "set" value.
Press again to access the modification.
Signal given by the LCD display:
• The heating flow "set" temperature and the
Stand-by
Winter
°C
14
13
symbol; the
°C
- 13 -
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