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    REGULAR BOILER HELP (HEADER TANK IN LOFT)

    If I remember right, on mine the tank connector has internal ribs, to take a key when installing, so a bung wouldn't work. And some have raised lugs on the flange for same reason, and on that type my method wouldn't work. Horses for courses. My method works fine on my system, DIY-er or not.
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    REGULAR BOILER HELP (HEADER TANK IN LOFT)

    That's your opinion, mine's different
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    REGULAR BOILER HELP (HEADER TANK IN LOFT)

    I've used this method several times with no problem. There's no way a big lump of mait will get into the pipe, small piece highly unlikely but maybe just possible, and if it did it would come out via a tap.
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    REGULAR BOILER HELP (HEADER TANK IN LOFT)

    Just noticed there was been a development before I posted this, but still........... I changed the iso valve on the cold pipe from the tank a while back, as old valve seized. I didn't want to drain off the water to waste so I made up a mushroom shaped thingy out of a bolt, flat washer and some...
  5. F

    Bypassing faulty room stat

    Why not fit a light switch in place of the stat? These things all go on a standard wall box. Then the wires are not exposed, and you can switch the heating on and off at will.
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    Scratching my head here with this.

    Thought so
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    Scratching my head here with this.

    240V/19ohm = 12amp, not 12kW. Power = 240^2/19 = 3kW, about right for an immersion.
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    meter to boiler pipe size

    Agree, if he sticks with heat-only, or even a system boiler, unless the output is a fair bit more than the existing (and he's given no reason why it might be) there's a good chance the gas pipe will be OK.
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    Multimeter recommendations?

    OK, you do it your way, I'll do it mine! I don't think there's any chance of my meter telling me something isn't live when it is, so risking death. If the meter fails completely, you know about it and think of something else. Incidentally, out of curiosity, how would you measure a current of a...
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    Multimeter recommendations?

    Not sure it's relevant, but no. I would only fit a combi boiler in exceptional circs, Chinese or otherwise. I think combis are a bad idea unless unavoidable. I might fit a Chinese heat-only boiler, if after some investigation it looked OK (that's in my own property, I'm retired and didn't work...
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    Multimeter recommendations?

    Personally, I'm not going to do that, any more than you're likely to bin yours. The charred ones might have been because the user did something crazy. Mine is quite adequate for what I and I suspect heating guys and domestic electricians would use it for. It says it's OK for 600 volt, AC and DC...
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    Multimeter recommendations?

    I can only assume the Flukes have some good points to justify the ~ £200 cost. My MS2108A does the usual things and measures high AC and DC current as well. Doesn't do low current through the leads, but I've not needed that.
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    Multimeter recommendations?

    I bought this one in 2016. About £32 at the time. Made in China but works fine, I'm well pleased with it. Link quotes $$ and says not shipped to UK, but if I remember right I ordered it from Amazon OK. My model looks (very) slightly different but still MS2108A...
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    System or combi boiler?

    For a given property, combis usually rated 2-3 times higher output than system or heat-only, due to the need to get a decent hot water flow. So instantaneous gas usage is higher (can mean increasing gas pipe size). Overall consumption for CH probably doesn't vary much, just depends on the...
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    Advise on a NEW indirect unvented hot cylinder

    You say remove the current F/E tank, but why do that if your boiler setup is OK? You could just swap your HW cylinder for unvented and leave the primary circuit as is.
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    System or combi boiler?

    Friend of mine runs a gas company, made redundant by BG early 90s, struggled for a couple of years, then combis took off and he's never looked back, gets most of his work from combi callouts. He wouldn't have a combi in his own place.
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    System or combi boiler?

    Consensus seems to be that unvented cylinder is the way to go for improved shower, provided your mains water pressure and flow are adequate. Needs checking before finally deciding. Specially if your current cylinder is on its last legs. Is there anything wrong with the existing boiler? If you...
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    System or combi boiler?

    As you have a system boiler at present I assume the water tank upstairs is the cold water storage tank, in the loft. System boiler has a built-in expansion vessel, so no F/E tank (in loft). Others might disagree, and it depends on the details of your existing set-up, but heat-only would be my...
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    System or combi boiler?

    Neither - go for a heat-only boiler. :)
  20. F

    Advice needed! Heat to radiators even with heating off

    Is it a new problem on a system which has been OK in the past, or is it new build/just moved in or what? If the latter, it could be piped wrong. Sounds like you have zone valves for heating and hot water. The heating return pipes must be commoned before connecting to the cylinder return. If not...

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