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 0.2 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 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 boiler will
provide central heating or domestic hot water
according to demand (Fig. 7). The central heating
( ) or hot water neon ( ) will illuminate (Fig. 5).
Neons 4 to 9 will illuminate as the temperature
rises.
5.
Position (ii)
In this position the domestic hot
water will be heated as demanded (Fig. 8). The
hot water neon will illuminate ( ). The central
heating will not operate even if timers, room
thermostat etc. are calling for heat.
6. Depending upon the system, domestic hot
water may be given priority when the selector
switch is in Position (i).
7. The boiler will light automatically on demand.
8. 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.
30
°
40
°
50
°
60
°
70
°
80
°
2
1
0
4
3
bar
Fig. 7
Off Position
Fig. 6
Fig. 5
Fig. 4
2
1
0
4
3
bar
Power On
Neon
Hot Water
Neon
Burner On
Neon
Central Heating
System Pressure
Gauge
On/Off/Reset
Selector Switch
Central
Heating Neon
30
°
40
°
50
°
60
°
70
°
80
°
4
5
6
7
9
8
Position (i)
(Central Heating or Hot Water)
Fig. 8
Position (ii)
(Hot Water)