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  1. On a sealed system such as a Pressurised cylinder...

    On a sealed system such as a Pressurised cylinder it's very unlikely to get Legionella, also the water would have to be heated constantly and not drawn off for long periods of time such as weeks...
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    Faulty wiring or stuck valve. Your volt pen...

    Faulty wiring or stuck valve.

    Your volt pen will show a live as they have a perm live going to them for the microswitch. You'd need to see if there's 240v on the Brown wire to the motor to work...
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    Yes they have a manual override. Some valves will...

    Yes they have a manual override. Some valves will stay perm open if you operate the lever. That maybe your issue, but hard to say if you don't know the make of valve. Maybe a picture might help?
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    You'd need to test if there's power to the valve,...

    You'd need to test if there's power to the valve, and check whether it's been locked open. Is it a Honeywell Valve?
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    Sounds like it's wired up wrong, especially as...

    Sounds like it's wired up wrong, especially as that the High Limit stat on the cylinder should be still wired in series with the zone valve. When the heatings calling it sounds as if it's heating the...
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    Don't think anyone really ever adheres to that...

    Don't think anyone really ever adheres to that rule :rolleyes:
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    So far i've resisted putting it back on. We've...

    So far i've resisted putting it back on. We've had the lounge rad on tonight (Beauty of Evo) and the Towel Rails come on as they would throughout summer. Hoping to get a few more days yet before the...
  8. Can you confirm which email or form you used? I...

    Can you confirm which email or form you used? I have a customers who's needs updating.
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    I've never had any issues with my own CS92A, only...

    I've never had any issues with my own CS92A, only when it needs new batteries. Other than that it's been perfect. I get the Comms error when the batteries are low, change em and it's good for another...
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    Oh no! Go Unvented and System boiler. Then you...

    Oh no! Go Unvented and System boiler. Then you can upgrade that Electric shower to something a bit better :D
  11. Thanks bruce_miranda. Even though I'm a...

    Thanks bruce_miranda. Even though I'm a 'MasterTech' Vaillant installer I get very few people requesting either Evohome or Vaillant Controls so haven't managed to get stuck into a project where I can...
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    Yeah, that's what I said. A cable back to the...

    Yeah, that's what I said. A cable back to the zone valve.

    This is obviously dependant where your zone valve is.
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    If you have an Unvented cylinder you will require...

    If you have an Unvented cylinder you will require a cable back to the zone valve. You cannot just use the Hot Water Kit to control the zone valve.

    The Cylinder High Limit stat is still required to...
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    Mine does this, however I usually find the...

    Mine does this, however I usually find the heating valve opens a minute or so later. But yeah it is rather annoying.
  15. I'd suspect with a grant you'll be very limited...

    I'd suspect with a grant you'll be very limited to your choices, and the quality of work you will probably get @DBMandrake won't to be up the standard you expect. They'll throw the thing in. They'll...
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    Yes it's probably fine, if you were to run at...

    Yes it's probably fine, if you were to run at 75oc and had the system on a full demand for a good hour or so then it might be a different story.
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    Depends what your precharge pressure in your...

    Depends what your precharge pressure in your expansion vessel is. I have a calculator that works it all out.

    At 65oc flow temp, with an expansion vessel pre-charge of 1.5 and a system fill of...
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    Did anyone come up with an easy solution to this?...

    Did anyone come up with an easy solution to this?

    I don't have any energy monitoring currently and would like to invest in one rather than go down the smart meter route.
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    Combi I take it? Hope it all goes well.

    Combi I take it? Hope it all goes well.
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    What boiler did you end up going for?

    What boiler did you end up going for?
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    Good old fashioned way of a Gate Valve cracked...

    Good old fashioned way of a Gate Valve cracked open 3/4 of a turn is the best thing IMO, then remove the top.
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    There's apparently a work around on the Plus...

    There's apparently a work around on the Plus System boilers - although i've never implemented it myself. How are you changing the set point using eBus? Some external device I assume.

    'Vaillant HW...
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    Does it work OK? At some point i'll probably...

    Does it work OK?

    At some point i'll probably be replacing my boiler with a Vaillant and wondered if it's worth the extra hassle.

    Did you manage to get it to differentiate between CH and HW like...
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    What you using to do that out of interest? a VR33?

    What you using to do that out of interest? a VR33?
  25. Isn't that the main idea behind it though?...

    Isn't that the main idea behind it though? Looking at the Slides on the beta, that seems to be one of the main reasonings.

    Because tbh, I rarely suffered from overshoots before.
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