Technical data

TO SET THE TIMESWITCH
The timeswitch controls the operation of the central heating circuit. The domestic hot water is
permanently available upon demand and will take priority over the supply of heat to the system
during the demand.
Check that the gas supply to the appliance is OFF and that the room thermostat, if fitted, is at
minimum to prevent the accidental operation of the appliance during the initial setting of the
timeswitch. It is not necessary to do this when making adjustments to the timeswitch at a later
date. Check that all taps and showers are shut.
Switch on the power supply.
Time pointer
Tappets
Dial
Manual selector
i WIRING DIAGRAM
TO REPLACE TIMESWITCH – CDi