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    Hissing inside Potterton 28

    Just had a new secondary heat exchanger fitted. On its first big burn, the boiler hisses after about 10 mins of not hissing. It lasts a couple of mintes only and sounds a bit like a kettle when it hisses during heating process. It is nt very loud but noticeable! It does not recur. Any ideas...
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    How often to add inhibitor to central heating system

    I have a Potterton 28, which was installed in 2004, and system flushed through and inhibitor added. I just had a new secondary heat exchanger, as the old one was black inside in the central heating side, and was not coping with full flow hot water heating to opitimal temp. Should more...
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    Honeywell wireless thermostst TPI on a non-condensing boiler

    I have a HC60NG thermostat on a Potterton 28 NON-condensing boiler. The thermostst operates on TPI control method. It works as it should but boiler fires up 45-50 times a day (short, frequent bursts) to maintain a very steady temp. Will this wear out the boiler? (I know these thermostats were...
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