Results 1 to 3 of 3

Thread: Replacing HR92 sensor with a Y87RF

  1. #1
    Automated Home Sr Member
    Join Date
    Nov 2017
    Location
    The Borderlands
    Posts
    81

    Default 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" setting for the zone on the controller and bound the Y87 as a remote sensor. It seems to work but when the HR92 setting is adjusted (by turning the control on the top of it) the controller calls for heat. I'd expected the HR92 control to be redundant so I'm a bit confused. Is this "working as intended" or should I delete the zone and start again, binding the sensor before the valves?

  2. #2
    Automated Home Legend paulockenden's Avatar
    Join Date
    Apr 2015
    Location
    South Coast
    Posts
    1,688

    Default

    You can still adjust via the HR92 but it's using the Y87RF.

    Think of an HR92 as three things:

    1 - A temperature sensor
    2 - A controller - essentially a connected knob, but also with a display
    3 - An actuator (motor controller).

    When you use a remote sensor you only replace (1).

    P.

  3. #3
    Automated Home Sr Member
    Join Date
    Nov 2017
    Location
    The Borderlands
    Posts
    81

    Default

    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 pleased) that a change to the set point on any one of the 4 devices (Evohome controller, Y87 or the HR92s) is sent to the other 3.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •