Hi, I was just wondering if anyone knew why my Grant Vortex Combi Condenser Boiler comes on when I turn the cold water tap on? I would expect it to come on only when I turn on the hot tap. Do I need to put in a non return valve? It has a reserve hot water tank.
I was also wondering if its cheaper to leave it on all the time or switch off at night.
Many thanks
Tony
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Boiler Questions
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Boiler Questions
For the experts to advise but is it a pure cold feed tap or a monobloc (cold and hot)?
The jury might be out, but leaving DHW on all night with a reserve tank, the boiler might have many short cycles which do not achieve condensing state and therefore less efficient.
The jury might be out, but leaving DHW on all night with a reserve tank, the boiler might have many short cycles which do not achieve condensing state and therefore less efficient.
aeromech3
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