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  1. Thatís really bad and unfortunate for me too,...

    Thatís really bad and unfortunate for me too, because Iím planning to move to a house which has UFH and an OpenTherm boiler and I intend to install EvoHome again.

    I think...
  2. With older firmware, and OpenTherm, the boiler...

    With older firmware, and OpenTherm, the boiler still used to fire if the aggregated demand was much less than 10%.

    With the newer firmware it only seems to send a flow temperature above 10C to...
  3. You will dead head the pump, possibly reducing...

    You will dead head the pump, possibly reducing its life.
  4. You can definitely mix electric heating zones...

    You can definitely mix electric heating zones with boiler controlled zones. I think preheating learning should still work correctly.

    There can be systemic delays resulting in HR92s closing...
  5. Also do you have an auto-bypass on C, required if...

    Also do you have an auto-bypass on C, required if all HR92s close?
  6. Yes, I think that should work, good thinking. ...

    Yes, I think that should work, good thinking.

    A configured as electric underfloor, BDR91 and EvoTouch sensor
    B configured as electric underfloor, BDR91 and T87RF
    C with BDR91 boiler control...
  7. I think the simplest solution is to replicate...

    I think the simplest solution is to replicate your current setup with a BDR91 as actuator and T87RF/EvoTouch as sensor for A, B, C. Evohome will apply TPI to each BDR91 independently.

    If you...
  8. What kind of Navien boiler is it, a combi? So...

    What kind of Navien boiler is it, a combi? So heating mode is working, but the hot water mode temperature is not set correctly?

    The issue could probably be debugged and fixed with an OpenTherm...
  9. This morning several zones were cold weather...

    This morning several zones were cold weather boosted because Evohome was indicating 6C outside temperature.

    The minimum temperature recorded during the night by my weather station was 9C and the...
  10. Why not just make reading from an OT sensor...

    Why not just make reading from an OT sensor versus Internet configurable?

    Itís easy to see whether the displayed temperature is correct.

    As it stands Accuweather is inaccurate for me and my OT...
  11. Hold down Settings until the Installation Menu...

    Hold down Settings until the Installation Menu appears.
    Click on System Parameters.
    Youíll find Cold Weather Boost Setting there.
  12. Clive, in your X plan setup do you also have the...

    Clive, in your X plan setup do you also have the Intergas cylinder sensor connected?

    I set my boiler DHW temperature to the same DHW temperature as EvoHome. When DHW is scheduled and the...
  13. So no fix to read the outside temperature from an...

    So no fix to read the outside temperature from an OpenTherm boiler?
  14. Thatís why I implemented my own weather...

    Thatís why I implemented my own weather compensation for my Intergas boiler using customised firmware running on an OpenTherm Gateway. There is an article about this, back in January, on the...
  15. Definitely doesnít work with the Beta firmware. I...

    Definitely doesnít work with the Beta firmware. I hope it is fixed in the release because the Internet read temperature can be several degrees out.
  16. Maybe this: ...

    Maybe this:

    https://www.automatedhome.co.uk/vbulletin/showthread.php?4756-Biomass-Boiler-and-Evohome-Do-I-need-to-control-the-Boiler
  17. Not true according to other posts on this forum...

    Not true according to other posts on this forum if you do a search.
  18. Replies
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    I have Evohome controlling 26 rads, UFH and DHW. ...

    I have Evohome controlling 26 rads, UFH and DHW. Managed to map to 12 zones fairly sensibly.
  19. The system learns the pre-heat time for each...

    The system learns the pre-heat time for each zone. Do you not find that your zones with oversized rads start heating later, and the others earlier? I find it works really well.
  20. Andy, Can you confirm that there is a bug with...

    Andy,

    Can you confirm that there is a bug with the controller not reading an OpenTherm boiler outside temperature sensor?

    The temperature is and always has been read about once per minute by...
  21. Mine is, as confirmed by monitoring via an OTGW. ...

    Mine is, as confirmed by monitoring via an OTGW.

    I see no evidence, unfortunately, that Evohome is using this temperature in preference to the Internet reading.

    It was clear yesterday that...
  22. I agree, my boiler is reporting 12.44C via...

    I agree, my boiler is reporting 12.44C via OpenTherm but the Evotouch is displaying 9C and Cold Weather Boost is activated.
  23. Yes, just noticed that zones are grey with off...

    Yes, just noticed that zones are grey with off icon.
  24. That appears to be correct, I see the Warm...

    That appears to be correct, I see the Warm Weather behaviour without icons so far.
  25. Yes, Iím using OpenTherm with my own weather...

    Yes, Iím using OpenTherm with my own weather compensation via OTGW and the behaviour has definitely changed with the firmware upgrade.

    The boiler was completely off, 10C demand, rather than a low...
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