When the programmer switches off the BOILER channel
then the water circulating pump will be switched off. If
during the period shortly after this the residual heat in the
appliance causes the water temperature in the boiler to
rise above 65ºC then the pump overrun thermostat will
change over. This will switch on the circulating pump.
BOILER
This thermostat is a safety cut-out device which is
intended to operate if the other controls fail. This control
will “lock-out” and switches everything off except for the
programmer clock and the “Pump Overrun” facility.
This thermostat has to be manually reset once the
temperature has cooled down.
COOKER
This thermostat is a safety cut-out device which operates
if the control thermostat fails.
This thermostat automatically resets once the
temperature has cooled down.
24
Electrical Controls
PUMP OVERRUN
FACILITY
OVERHEAT SAFETY
THERMOSTATS
