8
OPERATION OF
CONTROLS
(See also label on inside of appliance front panel).
The appliance is fitted with the following controls:
CENTRAL HEATING TEMPERATURE
The position of this knob will determine the temperature of the
water delivered to the radiators between the ‘I’ and ‘MAX’ position.
When the knob is turned anti-clockwise past the ‘I’ position towards
the ‘’(Summer Position), then the appliance will operate in the
HOT WATER mode only and no heat will be delivered to the radiators.
FACIA MOUNTED PROGRAMMER (if fitted)
Your installer may have fitted a mechanical programmer into the
facia of your appliance. Operating instructions are supplied with the
programmer.
SYSTEM PRESSURE GAUGE
The red needle has been set to show the sealed system pressure
which is required for the appliance to operate effectively. The grey
needle will show the actual pressure in the system.
INDICATOR LIGHT
Mains electricity indicator:
OFF : No mains electricity to the appliance
ON : Mains electricity is connected to the
appliance
FLASHING : Sensor fault.
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 ignition circuit.
If the overheat cut-off has operated the fan and/or pump will run
but the burner will not light. (No spark generation).
The appliance can be reset by pressing the overheat cut-off
button.
