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  1. #1
    Join Date
    Nov 2007
    Location
    Rochester, MN
    Posts
    80

    Specs for a Venmar Supra control

    Hi and thanks for reading,
    Does anyone have knowledge of how the 4 wires going to a Venmar supra control work? The supra control has 4 terminals, Y, R, G, and B. It has 3 settings plus a dehumidistat. 20on/40off (low speed), Constant on low speed, and Constant on high speed.
    -D in MN

  2. #2
    Join Date
    Nov 2007
    Location
    Rochester, MN
    Posts
    80

    Follow up

    I called Venmar today and here is what they said.
    The unit uses 24V low voltage signals
    Bk is the hot
    G is the high switch
    R is the low switch
    Y is the common

    The supra control has a timer that toggles the High setting on every 20 minutes out of the hour.

    There is also an Override switch for bath timers and etc...
    Bk (OC) is the hot terminal
    R is high setting
    Y is for the LED

    The override terminals can be used in conjunction with supra control and will take precedence over it at the HRV.

    The wiring diagram can be found on venmar's website on page 20 of the HE 2.6. Its the one I had installed so I'm not sure about other HRV units.
    -D in MN

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