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Type: Posts; User: kevinsmart

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  1. 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.
  2. 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.
  3. 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...
  4. 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...
  5. 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.
  6. Yes, just noticed that zones are grey with off...

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

    That appears to be correct, I see the Warm Weather behaviour without icons so far.
  8. 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...
  9. I see Warm Weather Saver in action. I have one...

    I see Warm Weather Saver in action. I have one zone demanding 4% and the other 8% but with outdoor temperature of 10C the boiler pump is not running.

    Previously it would be in overrun.
  10. It would be good to confirm this, I still think...

    It would be good to confirm this, I still think the displayed temperature is read from the internet as I saw some earlier discrepancy.

    Looks okay just now though: displays 10C, OpenTherm read...
  11. Thatís great that the boilerís outdoor...

    Thatís great that the boilerís outdoor temperature sensor reading will be used! Iíd assumed that control was just based on the Internet read temperature.
  12. No problems seen so far with the new firmware and...

    No problems seen so far with the new firmware and my OpenTherm, DHW priority, UFH mixer valve setup.

    New features appear complementary to my OTGW based weather compensation, which is good.
  13. Replies
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    PJB, enable the flow temperature graph as well. I...

    PJB, enable the flow temperature graph as well. I expect youíll see your boiler overshooting the temperature demand and then anti-cycling.

    See my post here:
    ...
  14. Replies
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    Honeywell call this ďlow load controlĒ. When...

    Honeywell call this ďlow load controlĒ.

    When an appliance is no longer able to modulate lower the control switches from modulating control to low/off control.

    Off in OpenTherm is 10C.
  15. The boiler will cycle with Opentherm. When the...

    The boiler will cycle with Opentherm. When the flow temperature reaches 5C above the requested temperature, it will shutdown keeping the pump running (1).

    See my description above of the low...
  16. Optimum boiler anti-cycle setting with Evohome

    My Intergas HRE40SB boiler anti cycle parameter P is set to 10mins, the default is 5mins.

    Iím wondering what the optimum setting, from an efficiency point of view, is for Evohome OpenTherm when...
  17. I see MsgID 17 Relative modulation level every...

    I see MsgID 17 Relative modulation level every minute.
    MsgID 0 containing Flame status almost every second.
  18. Do you still see the OTBridge requesting that...

    Do you still see the OTBridge requesting that information from the boiler? I canít monitor the Controller messages but do see these requests from the bridge with the OTGW connected.
  19. Which message stops with the OTGW connected?

    Which message stops with the OTGW connected?
  20. Replies
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    You could rotate the T87RF to set the temperature...

    You could rotate the T87RF to set the temperature to 30C and look for the zone with this setting on the panel.
  21. There is no difference on the OpenTherm Bridge...

    There is no difference on the OpenTherm Bridge side, its green LED flashes every 10 seconds or so.

    On the OTGW, in Gateway mode, you should see a green LED lit when OpenTherm messages are...
  22. That's actually incorrect. If you refer to the...

    That's actually incorrect. If you refer to the "Weather - compensation adjustment" section in the Intergas manual you'll see "The maximum supply temperature (Tmax) is set via the temperature...
  23. Are you seeing the "Thermostat disconnected"...

    Are you seeing the "Thermostat disconnected" message at any time?

    I have seen this happen. There was a period last week when RF interference appeared to affect Evohome and my Smart Meter display....
  24. Thatís very strange because in Monitor mode there...

    Thatís very strange because in Monitor mode there is no firmware intervention to transfer data across the gateway. If you can just double check that no LEDs are lit, Iíll take another look at the...
  25. Bruce, when you have switched the OTGW to Monitor...

    Bruce, when you have switched the OTGW to Monitor mode do you see any flashing LEDs?

    In Monitor mode you should see no LED activity and the OTGW should not be modifying data. If you are definitely...
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