We have just had a Vaillent 140 time switch fitted and an old Drayton unit removed to clean up the boiler as part of a Kitchen refit.
What I can't find is any over ride facility on the timer. Is there any way of turning the boiler (Vaillent 630) on heat or hot water for just an hour when the weather has turns a bit colder?
What I can't find is any over ride facility on the timer. Is there any way of turning the boiler (Vaillent 630) on heat or hot water for just an hour when the weather has turns a bit colder?