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Type: Posts; User: DorrisMancer

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    I'm now tempted to buy a pipe thermometer - has...

    I'm now tempted to buy a pipe thermometer - has anyone tried the cheap "clip-on" type, such as https://www.amazon.co.uk/Clip-pipe-thermometer-hot-water/dp/B00GYV0L5I ?
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    So how do you decide where to set the boiler...

    So how do you decide where to set the boiler temperature control?

    (Am I the only one who reduces the boiler temp "a bit" in the summer, turns it back in the winter, and increases it "a bit" in...
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    Boiler setting when only DHW wanted

    We're told to have DHW set to 55deg to avoid legionella problems. I don't have the ability to measure the output temp of the boiler, and the dial on the W-B boiler isn't much use, but if it's set...
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    Thanks for all the replies but I'm convinced that...

    Thanks for all the replies but I'm convinced that the use of custom (as described by DBMandrake and others) is the best solution. It allows rads in individual rooms to be turned-up during chilly...
  5. Currently they're set-up as one for upstairs and...

    Currently they're set-up as one for upstairs and t'other for downstairs, powered from the C/H supply via the old thermostat cable. I'd thought about having one on the landing (and using it for T...
  6. Min distance between two Evohome controllers

    I have two controllers that are currently next to each other. I'm planning to move them and it occurs that it might be beneficial (although a pain to do) to put them at least 300mm apart. Has anyone...
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    Not if someone turns-up an HR92 and doesn't turn...

    Not if someone turns-up an HR92 and doesn't turn it down again.

    I've now set all zones on one controller, and all but one zone on the other, to custom (renamed summer) which is simply a series of...
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    Thanks. It sounds as if a renamed "custom" is the...

    Thanks. It sounds as if a renamed "custom" is the solution.


    As mentioned in another thread, this isn't a good solution because the valve will still open


    (By "current" I meant the version...
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    What setting for Summer?

    How do people set their controllers in the Summer with the current firmware?


    If it's set "off" then it's necessary to go round the house checking for, and resetting, any manual overrides (which...
  10. I was about to start a new thread to moan about...

    I was about to start a new thread to moan about overrides in the "off" condition not being reset, having found that someone had turned-up a rad on a cold evening and that it was still pumping-out...
  11. A benefit of having a CH zone valve.

    A benefit of having a CH zone valve.
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    Thanks Paul. I understand the HR92 functions but...

    Thanks Paul. I understand the HR92 functions but doubted that the system was smart enough to accept multiple ways of adjusting the set point. I've just done some experiments and I'm surprised (but...
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    Replacing HR92 sensor with a Y87RF

    One of my zones has 2 rads with HR92s but we've recently added some humongously thick curtains near the valves so I've put a Y87RF on the wall. I reset the Y87 binding, removed the "remote sensor"...
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    Hmmm, the one "certified evohome installer" that...

    Hmmm, the one "certified evohome installer" that I dealt with was worse than a waste of space.

    If you want to try operating without the C/H zone valve before deciding whether to replace the head...
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    My dual controller Evohome system was part of a...

    My dual controller Evohome system was part of a full replacement of boiler, rads (around 26, I forget the exact number), and all pipework - I chose to keep the zone valves for simple reversion to a...
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    You probably know this, but just in case: the...

    You probably know this, but just in case: the BDR91s control the zone valves; when either of the zone valves is fully open it operates a microswitch which switches the pump on and also applies power...
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    I've updated but can't see anything new, so I...

    I've updated but can't see anything new, so I wonder what the update fixed ... ?
  18. That's interesting. I have a (fairly large)...

    That's interesting. I have a (fairly large) oil-fired boiler and have left the settings at default because of a lack of explanation of what they do and why they should be set to a particular value....
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    If you are using masonry drills then it sounds as...

    If you are using masonry drills then it sounds as if you haven't yet experienced the benefits of an SDS drill - they are orders of magnitude more effective than the old style hammer drills that we...
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    Sorry, that's nonsense (and I hope that anyone...

    Sorry, that's nonsense (and I hope that anyone considering this is already aware of cable colour schemes). Wiring to the old-style thermostats is typically 6243Y (flat, 3 core + earth) cable ......
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    It would be far preferable to sink a back-box to...

    It would be far preferable to sink a back-box to house the power supply and to use the old thermostat wiring to provide a mains supply from the wiring centre.
  22. Sorry, the resistor suggestion just doesn't make...

    Sorry, the resistor suggestion just doesn't make sense. Also, the forward voltage of an LED is significantly more than a silicon diode so what sounds like an attractive idea would not work. The OP's...
  23. Because a forward conducting silicon diode will...

    Because a forward conducting silicon diode will drop about 700mV whereas the voltage drop across a resistor is subject to Ohm's law and will vary with current (and resistance, of course)
  24. Replying to my own question (in case it helps...

    Replying to my own question (in case it helps anyone), the answer is Yes.
  25. Re-binding the heating BDR91 to 2 controllers

    My system has: 2 controllers, 2 BDR91s driving heating and DHW zone valves, and a large number of HR92s. After some mains interruptions the heating BDR91 is not responding to commands from either...
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