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  1. V

    automatic by-pass differential valve

    Hoping that an expert will be able to tell me what the correct setting should be for my central heating auto by-pass diff valve should be. I am experiencing some kettling/whistleing noise from the valve and connecting pipes when the heating comes on and switches off. I have already had the valve...
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    Greenstar combi boiler pressure drop

    I am experiencing a pressure drop problem with my Worcester Bosch combi which is 15 months old. When the central heating is on the pressure needle is on 1.5 bar,when no heat is called for the pressure drops to 1 bar and stays there. But when i turn a hot water tap on the pressure drops down to...
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    Wet underfloor heating in conservatory not very hot

    I currently have wet underfloor heating in a large conservatory. When it is cold outside like 2-4c, the temperature in the conservatory will not go any higher than 16c, even with the room stat set a 21c. I have got the UFH pump on the no.3 setting with the mixing valve on 50c. The question is...
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    Under floor heating pump speed

    I have a hot water under floor heating system (off a combi gas boiler) in my conservatory. I think it is a 2 loop system using a Grundfos pump with 3 speed settings. The instructions that came with the pipework said that the pump speed should be on its lowest setting,is this correct or can i...
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    Argon filled double glazed windows

    Does anyone know how to check if a double glazed window has argon gas in it?.
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