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I am responsible for a vacant house with a natural gas combi boiler (Ideal Logic range). I need to keep the house heated to a minimum temperature, but would like to switch off mains water (pipe freezing risk).

Will the boiler accept not having a mains supply for the heating closed circuit? I don't think it should need a mains supply, but software, etc. can be fussy.

I can and will simply try it out, but don't want to risk it cutting out while not at the property, or accidentally damaging the boiler.

FreeMan
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Dan
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1 Answers1

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Provided that the water pressure indicated on the boiler is within the manufacturer's specified range, a combi boiler can run indefinitely with no water supply. It keeps recirculating the same water round and round.

If the pressure gauge ever falls below the minimum, you would have to turn the water on again in order to re-pressurise the system.

Simon B
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