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  1. Replies
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    No he's talking about multi-room zones. A...

    No he's talking about multi-room zones.

    A multi-room zone is one where all HR92's in the zone measure their own temperature independently to adjust their own radiator vs the default single room...
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    I don't think any of the previous respondents...

    I don't think any of the previous respondents understood the question. :)

    In multi-room zones the displayed temperature on the controller is the first bound device in the zone. In other words the...
  3. If you have a hot water zone valve and a heating...

    If you have a hot water zone valve and a heating zone valve (eg an S-Plan system) there are two basic wiring and configuration options available.

    Option 1 - two BDR91's - one connected to each...
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    Press Settings, then Wifi. Then press Disconnect...

    Press Settings, then Wifi. Then press Disconnect and search for your new network.
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    That's the first time I've heard of someone...

    That's the first time I've heard of someone unscrewing the black wheel past the limit stop but given how flimsy it is I would expect it to be more common. Perhaps others have done it but not admitted...
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    In a full Evohome system with HR92's there are...

    In a full Evohome system with HR92's there are two things it can do to control the heat output at each radiator - it can adjust the water flow through a radiator by adjusting the valve, (which is per...
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    Lithium batteries have a higher initial voltage...

    Lithium batteries have a higher initial voltage and less voltage sag as they discharge compared to Alkaline.

    So while you should indeed change the battery setting on the HR92 when using Lithium,...
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    Evohome hackers untie! No, unite! :D

    Evohome hackers untie!

    No, unite! :D
  9. You must be on the first beta version 19.31 then....

    You must be on the first beta version 19.31 then. Hot water priority was first added in the 19.31 beta as a mandatory feature and as its a beta release the public documentation doesn't match how the...
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    No, they are not the same. :) The "heat...

    No, they are not the same. :)

    The "heat demand" from an HR92 is actually just the valve pin position from 0-100%. This is what gets sent over the air and what you will receive when doing your own...
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    A neighbour perhaps ? It's not just Evohome that...

    A neighbour perhaps ? It's not just Evohome that uses this wireless protocol. All the Honeywell wireless thermostats use the same protocol, so it could easily be a neighbour with a single zone...
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    What are you using as your receiver ? An HGI80 or...

    What are you using as your receiver ? An HGI80 or something like a NanoCUL with CC1101 ?

    I'm using the latter and although I tried evohome-listener and got it to sort of work last year, I later...
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    The set point is the requested temperature in...

    The set point is the requested temperature in your schedule, that is compared to the actual measured temperature (shown on the controller) by the HR92 to decide whether it needs to call for heat.
    ...
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    What are the measured temperatures relative to...

    What are the measured temperatures relative to the set point ? If the measured temperature is more than 1.5C above the set point a zone won't call for heat.

    What type of zones do you have ? Are...
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    The heat demands are shown in the "System...

    The heat demands are shown in the "System Summary" page inside the installer menu. So just do a long press on Settings, then go to System Summary. If you don't have any percentages on this page and...
  16. I just wanted to add that I didn't "recommend"...

    I just wanted to add that I didn't "recommend" 70C to anyone. :D Obviously the optimal flow temperature depends heavily on the size of your radiators, insulation in the house, whether your boiler is...
  17. I'd like to relate an observation I made...

    I'd like to relate an observation I made yesterday about the inconsistency in the way manual overrides are applied.

    If you set a manual override when cold weather boost is active and is boosting...
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    One problem with using the Away action like this...

    One problem with using the Away action like this is that Away disables Hot water unless you manually override it back on again.

    A custom action is the best way to do this and lets you apply the...
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    I don't think its "deafness" changes, it's simply...

    I don't think its "deafness" changes, it's simply that when the hot water system is active (in the differential band and/or heating or cooling quickly) the sensor sends very frequent messages so if...
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    That's my conclusion too after extensive testing.

    That's my conclusion too after extensive testing.
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    What is the voltage of the Alkalines you had in...

    What is the voltage of the Alkalines you had in stock ? New they should be 1.61 volts. They don't have to fall too far below this before they'll report 2 bars, so its pretty normal for them to drop...
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    Even though you tried retensioning the contacts...

    Even though you tried retensioning the contacts it's still probably a high resistance connection. When there is no load the voltage will be high and therefore the battery reading (which doesn't...
  23. If full stroke works better on one and they are...

    If full stroke works better on one and they are the same valve bodies I'd use it on all three.

    Even though I have Honeywell Valencia valves I find I have to use full stroke mode on all my HR92's...
  24. The valve pin positions will not be identical...

    The valve pin positions will not be identical between multiple HR92's in the same zone in single room mode, but in my experience they'll be within about 5% of each other. Certainly not enough to...
  25. Another thing I would check is whether the HR92's...

    Another thing I would check is whether the HR92's are really opening to different pin positions - this seems unlikely.

    When the problem is exhibiting (some radiators hot and others cold) go into...
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