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franby

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franby

central heating and hot water operate at same time

i have a new vaillant boiler fitted and both hot water and central heating come on at same time,i cant have hot water without central heating why?its not a combi boiler
17:56 Sat 20th Jun 20099 answers, last by genius1933 16:13 Tue 04th May 2010

Only 1 question