I have installed a new radiator but to connect it to old central heating pipes i have to drain out the entire system.The new combi boiler control has three settings.Off,central heating and hotwater and hotwater only.My question is,if i keep the control switch on hotwater position only ,can i drain out the central heating water safely while maintaing hot water available.That is only if i can not complete the job same day.The system has to be flushed out twice.Or do i have to switch the boiler off completely.Any advice needed urgently please.
central heating draining
- Thread starter saleem
- Start date
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Do not run a combi with no water in it or it might die
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