Hi all, I have just moved into a house that has a combi boiler. Is there a way to set the water only timer (not the central heating)? At the moment I can hear the boiler turning on throughout the night to heat the water. I've attached a photo, and the timer seems to be only for the radiators.
Vailant combi boiler heater timer
- Thread starter Brentles
- Start date
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The timer on your boiler only controls the CH, the HW is activated when you open a hot tap, what is happening is what is called Hot water pre heat , it is a function of the boiler to keep it warm all the time , it is easy to switch off, turn the CH off and turn the HW temperature control down to minimum, wait till all lights go off and then turn it back to about 60 , if you want it back on turn the thermostat back to max and the pre heat light will come back on
yes the pre-heat function on your boiler is either on or off, I always switch them off, the room thermostat is set to whatever you are comfortable with, as a rule, of thumb the lower it is set the cheaper your gas bills will be, some more modern control systems are a lot smarter and sophisticated, but you have a simple on off thermostat, if set at 23 then when the room that the thermostat is in reaches 23 degrees then the boiler will shut down for heating (the HW pre-heat if still selected to on will still come on regardless of what the room thermostat is set to)
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Try the shower first without activating the pre- heat, you are only talking about a difference of under a minute, most people dont even notice that it has been turned off
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