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Thanks for that. Tony N

The central heating system in our bungalow is non-sealed and powered by a 25 year old (I believe) Baxi 50?R(or B)S boiler. Probably the original fitment when the bungalow was built in 1980. The indecision about the type is because the printing has partly worn off the label. Circulation of the...

Part of the central heating system in our bungalow is a vertical pipe, not quite at the highest point of the system (it is below the header tank) with a brass/bronze 'gismo', 'thingy' or whatever at the top. This device is about 4" high by 1.5" diameter with a Schrader (car tyre) type valve at...

Hi Oilman, ["This is unusual, is this what you mean?"] Yes. There are a mass of small bore pipes running from the main pipework by the tank. The towel rail even has it's own supply from the main feed, just after the pump, with a valve, between the 2 take off points, that has always had a...

Thanks for your prompt response Oilman. There is on the 'out' side from the boiler a standpipe that has a 'gismo' on top of it with a Schrader (car tyre) type valve on the top of it. I depressed the valve core and it bled water. As I was reluctant to flood the loft I only let a little go so I...

We recently had to change the Grundfos pump on our central heating system. I bought it and a local plumber/heating engineer fitted. he said that the previous one had failed due to scale in the system. (The system was probably fitted about 20 years ago when the bungalow was built), so he put some...