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3.0 Operating the Boiler
5
3.1 Operating the Boiler
1. Ensure that the electricity and gas supplies are
turned on. Check that the central heating pressure
is between 0.5 and 1.0 bar (Fig. 4).
2. Turn the On/Off/Reset selector switch either
anti-clockwise from the off position (Fig. 6) to both
central heating and domestic hot water or
clockwise to domestic hot water only.
3. In either position the green power on indicator
( ) will illuminate (Fig. 5).
4. Position (i) In this position the central heating
will operate according to demand or provide
domestic hot water when a tap or shower is turned
on (Fig. 7). Priority is given to domestic hot water.
The central heating/hot water neon ( ) will
illuminate (Fig. 5). Neons 6 to 11 will illuminate as
the temperature rises.
5. Position (ii) In this position hot water will be
provided when a tap or shower is turned on
(Fig. 8). The hot water neon ( ) will illuminate
(Fig. 5).
6. The boiler will light automatically on demand.
7. The orange burner on neon ( ) will illuminate
when the boiler is operating and the main burner is
on (Fig. 5).
IMPORTANT: When the selector switch is in
the ‘0’ (Off) position the electrical supply to the
boiler is isolated. The boiler will not operate and
the integral timer (if fitted) will require resetting
once the selector switch is set to either Position
(i) or Position (ii).
30° 40° 50° 60° 70° 80°
2
1
0
4
3
bar
OFF
ON
PREHEAT
Position (ii)
(Hot Water)
Fig. 7
Fig. 8
OFF Position
Fig. 6
Fig. 5
Fig. 4
2
1
0
4
3
bar
Power On
Neon
Burner On
Neon
Central Heating
System Pressure
Gauge
Position (i)
(Central Heating or Hot Water)
On/Off/Reset
Selector Switch
Central
Heating Neon
Domestic
Hot Water
Neon
30° 40° 50° 60° 70° 80°
6 7 8 9 10 11