10
TO LIGHT AND STOP THE
APPLIANCE
CH Control in
fully clockwise position
CH Control in
fully anti-clockwise position
TO LIGHT THE APPLIANCE
Check that the water valves to the central heating circuit are open.
Check that the black needle on the pressure gauge is not below
the required system pressure.
Switch on the mains electricity. Set the room thermostat to
maximum. Turn the central heating temperature control knob fully
clockwise.
The burner will light and the red flame detection indicator will light.
Set the central heating temperature control knob and the room
thermostat, if fitted, to the desired temperature.
TO STOP THE APPLIANCE
For Short Periods
Turn the central heating temperature control knob fully anti-
clockwise past the position. NOTE: The appliance will still operate
in the domestic hot water mode.
For Long Periods
Turn the central heating temperature control knob fully anti-
clockwise past the position. Switch off the electricity at the mains
supply.
A facia mounted electronic programmer will retain its settings for
about two weeks, after which it will return to the factory set
programme. The time will be saved for approximately 7 hours. The
display will disappear after approximately 1 hour.
A facia mounted mechanical programmer will require resetting
once the central heating temperature control knob has been set fully
anti-clockwise past the position, or the mains supply has been
disconnected.
ELECTRICITY SUPPLY
FAILURE
If the electricity supply fails the appliance will not operate. Once
the supply is restored the appliance will return to normal operation. If
a programmer is fitted, check that the settings have been maintained.
OVERHEAT CUT-OFF
THERMOSTAT
The appliance will enter a lockout condition in the event of
overheating.
An overheat cut-off thermostat is fitted to the appliance which
will interrupt the electricity supply to the gas valve.
If the overheat cut-off has operated, the fault indicator will flash once
a second.
The appliance can be reset by pressing the fault indicator button
and holding in for 5 seconds when the appliance has cooled. If this
condition continues to occur, then call a service engineer.
