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  1. Thread: X-Plan

    by kevinsmart
    Replies
    6
    Views
    161

    Evohome support of DHW priority has only just...

    Evohome support of DHW priority has only just been added to its firmware. Previously if you had CH and DHW valves you would wire them to the DHW BDR91 such CH closes when DHW opens.

    I’m not sure...
  2. Thread: X-Plan

    by kevinsmart
    Replies
    6
    Views
    161

    Because default operation is OpenTherm heating...

    Because default operation is OpenTherm heating with only HR91/2s controlling flow to radiators.

    When there is a demand to heat the DHW cylinder you don’t want 70C flow in your CH circuit leading...
  3. Thread: X-Plan

    by kevinsmart
    Replies
    6
    Views
    161

    Basically the CH 2-port is Normally Open and the...

    Basically the CH 2-port is Normally Open and the DHW valve Normally Closed.

    When there is a Priority DHW demand the CH valve is closed and DHW opens, so all flow is to the cylinder.

    With...
  4. Thread: X-Plan

    by kevinsmart
    Replies
    6
    Views
    161

    https://www.intergasheating.co.uk/app/uploads/2019...

    https://www.intergasheating.co.uk/app/uploads/2019/11/X-Plan-diagram-Rapid-HRE-Eco-RF-low-voltage-option-V1.pdf
    ...
  5. As I understand it, this parameter sets the...

    As I understand it, this parameter sets the closed to open, 0-100% (90 degrees) actuator time.

    What do you observe when there is a 100% demand, how long does it take to open the valve?
  6. Yes, looks like a bug, but does the default 150s...

    Yes, looks like a bug, but does the default 150s not work for you, why do you want to change it?
  7. Thinking back to how I set my HM80 up, Bruce. It...

    Thinking back to how I set my HM80 up, Bruce. It was on the older firmware and at that time after configuring the parameters, you needed to change the heating type from MIXING VALVE to ZONE VALVES,...
  8. Replies
    7
    Views
    391

    If there is no heating demand 0% then the boiler...

    If there is no heating demand 0% then the boiler won’t fire and the radiator valves won’t open.

    Try setting zone(s) 2C above the current temperature reading to test whether they heat up.
  9. Replies
    7
    Views
    391

    What zone heating demands do you see in the...

    What zone heating demands do you see in the Installer menu (long press Settings)?
  10. Replies
    69
    Views
    11,458

    Not now, I moved house and predominantly have...

    Not now, I moved house and predominantly have HCE80s now. It was working fine with the latest firmware as far as I recall but I was just using the default run time setting, I only changed the max...
  11. 1 is L red 2 is N blue 3 is switched L to...

    1 is L red
    2 is N blue
    3 is switched L to boiler yellow

    BDR91:
    Connect L and N
    Bridge L to A
    B to boiler yellow
  12. Fit boiler control, it will be inefficient...

    Fit boiler control, it will be inefficient otherwise, with the boiler cycling when TRVs are closed.
  13. It is a supported configuration for large rooms. ...

    It is a supported configuration for large rooms.

    I edited my post above with instructions on how to do it.
  14. I encountered this situation. All you need to do...

    I encountered this situation. All you need to do is to use two zones on the HCC80, one with 3 actuators, the next with 2 and bind them to the same room zone/thermostat in Evohome. They will...
  15. Replies
    6
    Views
    437

    I found BDR91 relays to be noisy, and with TPI...

    I found BDR91 relays to be noisy, and with TPI annoying if installed in a living area.

    The HCE80 has more intelligence around pump control, with overrun, and quiet actuator control (solid...
  16. Replies
    69
    Views
    11,458

    You should see better zone temperature control...

    You should see better zone temperature control with the HM80, if that was previously a problem for you?
  17. 1837183818391840 Individual zone demands are...

    1837183818391840

    Individual zone demands are between 0 to 100% with the maximum demand sent to the OpenTherm bridge.
  18. I’ve got HCE80s with external antennas and see...

    I’ve got HCE80s with external antennas and see individual zone demands on the controllers
  19. It might not solve it but it will at least allow...

    It might not solve it but it will at least allow us to debug more easily, by seeing the zone demand percentages
  20. Contact customer support:...

    Contact customer support: consumersupportuk@resideo.com
    Provide this info:

    MAC ID and CRC code of the Evohome.

    The MAC address and CRC code of the evohome controller can be found in the...
  21. What firmware version are you running? Press...

    What firmware version are you running? Press SETTINGS. Keep the DEVICE SETTINGS button pressed until SYSTEM INFORMATION is displayed. Latest is 02.00.19.33
  22. Looks like you don’t have a boiler relay...

    Looks like you don’t have a boiler relay configured?

    You should see an Appliance entry for the BDR91 or OpenTherm boiler control.

    How is your system wired?
  23. The central controller is responsible for...

    The central controller is responsible for activating the boiler relay.

    What does your System Summary screen (long press Settings) show when the second HCE80 zones are calling for heat?
  24. Replies
    4
    Views
    466

    Could it be the same issue as this, reset the...

    Could it be the same issue as this, reset the boiler’s RF unit?

    https://www.automatedhome.co.uk/vbulletin/showthread.php?6415-Evohome-Opentherm-Bridge-Binding-issue&p=45611&viewfull=1#post45611
  25. Ally153 indicated: The feature is activated...

    Ally153 indicated:

    The feature is activated when the outside temperature gets close to or exceeds the room setpoint when the room temperature is already within 0.5C of setpoint. As you've noticed,...
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