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Hi, Pictures being uploaded soon hopefully. Had another look last night and the plastic knob that I can't turn is directly opposite the drain valve outlet on the double check valve housing. Presumably nothing will come out unless I can turn that or am I wrong?

Hi, I tried the above method last night (i.e shut off cold water supply, turn hot taps on in kitchen downstairs, open drain valve) and nothing happened. The hot taps ran for a minute or two before running dry and I had a small dribble of water out of the hose from the drain valve. Any...

Hi, I'm still confused though. It's the hot water in the tank that I want to get rid of and so how will opening the cold taps drain that off?

Hi, Sorry, that should read "Condensing Boilers with Integrated Hot Water Storage". It's a Potterton Powermax HE115 by the way. Thanks.

Hi, Thanks for the reply and it sounds like an idea as the immersion heater is in the middle of the tank. The problem is that I don't quite understand what is going on with the taps. I switched the boiler off at the master switch and then turned the stop cock off. I opened the taps in the...

Hi, Still trying to fit an immersion heater to my Potterton Powermax HE115 Combi boiler. Had a go at the weekend following instructions in the manual that say: "Isolate mains water supply at stop valve on Inlet Control Group and close / turn valve (handle at 90° to valve body) on double...

Thanks Baxpoti, I didn't even know it had a valve on it but I found that last night and have a foot pump with a guage on and so will do that at the weekend. Thanks for your help.

Hi, I've bought an immersion heater for my Powermax 115 Bolier. This is so that we have hot water when the bolier goes wrong again (which it seems to do on a fairly regular basis). The procedure in the manual seems fine apart from the last step which says: "When refilling: check that...