another Visionpro ques. - Page 2
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  1. #14
    Join Date
    Sep 2004
    Posts
    24
    Yeah thanks that's where the confusion is and the work around seems to be an external relay.
    That or go with the white roger 371 I think. Funny
    I posted asking for people to compre the two and mjority seemed to think the VP was superior however this application seems to be it's drawback.
    I guess a single HP w/2stage fossil isn't the ordinary
    config.

  2. #15
    Join Date
    Aug 2002
    Location
    Southold.calm
    Posts
    5,410
    jultzya

    On fossil fuel
    I’ve set up several of these and if the furnace is before the A-coil there is a time that both furnace and HP are running. Not a good idea. I put the relay in just as a safety so both cant run at the same time. I’d rather not get into detail in an open forum but on the setup what keeps the furnace off between 35 and 50 deg’s??? Lets continue this in a secure site.

  3. #16
    Join Date
    Apr 2003
    Posts
    6,383
    Sounds like a plan...

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