In winter conditions, i.e. central heating and domestic hot water,
the thermostat should be set at position 5 or 6.
For summer conditions, i.e. domestic hot water only, the
thermostat should be set at position 3.
These settings, however, are offered for general guidance only
and other settings may be found preferable, dependent upon the
type of system installed or as recommended by the installer.
Control
of
water temperature
1. Adjust the boiler thermostat (8) to give the required
temperature of central heating.
2. The boiler thermostat automatically switches the main burner
OFF and ON to maintain the selected temperature.
Approximate flow temperatures for the boiler thermostat settings
are:
Knob Setting Flow Temperature
°C
of
1
56 133
2
61 142
3
66 152
4
72 161
5
77 170
6
82 180
1. For short periods
Turn the boiler on/off switch (C) to OFF.
When heating is again required, restore the switch to ON.
2. For longer periods
Turn the boiler ON/OFF switch (C) to OFF.
Switch the electricity supply to OFF.
Frost protection
If no frost protection is provided and frost is likely during a short
absence from home, leave the heating controls at a reduced
temperature setting.
For longer periods, the entire system should be drained -
including the domestic water supply. If the system includes a
frost thermostat then, during cold weather, the boiler should be
turned OFF at the time switch(es) ONLY. The mains supply
should be left switched ON, with the boiler thermostat left in the
normal running position.
The boiler is fitted with a safety 'cutout' thermostat. This will shut
down the boiler in the event of overheating. Should this occur
allow the boiler to cool, press the reset button (E) then relight as
detailed in steps 1-8 in 'To light the boiler'.
If the cutout condition still persists turn off the boiler and consult a
CORGI registered installer.
116480
Controls
door
LEGEND
A Sightglass.
B Thermostat knob.
C Mains on/off switch.
D Gas service cock (shown in the OPEN
position).
E Overheat thermostat reset button.
57879
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