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Hi I am planning on replacing a radiator valve. Is it essential that I replace the olive on the pipe valve connection? Looks to me like there are risk in removing the olive e.g. damaging the pipe or the pipe being distorted. Are there any risks with just leaving the olive and nut on the...

Hi I have a Texecom Veritas R8 alarm system. I have just moved a PIR and now when I try arming or testing the system all 6 PIR's that I have appear to be in fault. Can anyone give any advice on this? The PIR that I moved looks to be wired correctly. If I remove the cover on the PIR...

A quick question, which may be a dumb one, but this is the first alrm I have fitted. When wiring up all the tamper alert wiring should I just run all eight/sixteen wires into the TAMP terminal pairs or is it better to run them first into a comnnector strip then to the TAMP terminal pairs...

Hi there. Back again. I have a combi boiler, sealed system. I have taken one of the rads out of the system to do some decorating. Closed off the valves, removed the rad etc. The cold pressure on the boiler was at 1.2 bar. I turned the central heating on and the pressure went through...

I have a sealed central heating system. I want to replace a few rads upstairs with smaller double rads. Do I need to drain the system fully or just the upstairs to below the radiator level? Any advice is gratefully received. Ta Mike