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  1. #1
    Join Date
    Jul 2011
    Location
    NEW YORK
    Posts
    58

    Help New Unit Freezstats? Location

    Have not been in the hospital industry for long, and have come across a design just implemented for a special chem Lab.
    Roof (Top Outdoor) Supply Fan with a 100% OA, a preheat Coil, CC at unit (no return), 3 separate exh fans.
    Individual Zone Reheats in space.

    Recommendations on failsafe freeze protection. It is not overly big unit, but would like more then one freezsstat due to in one fails, would have a back up?

    My question is does anyone have come across a similiar setup and if so any suggestions. Pro/Cons

    1) Two manual Freezstats? Reset manually at unit? Or relocate them.
    2) Series or Parellel
    3) Would it be better to have them one down stream of the other or direct parellel from each other?
    4) Should they both be set at 36 or 38F?

    There is a control rm nearby, and I have noticed some manual resets are in ceilings. Just want to make sure the unit is check too.


    Thank you and apprectiate your help so much. Difficult decision.

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,120
    Removed your other thread, Please don't make duplicate threads, thank you.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Jul 2011
    Location
    NEW YORK
    Posts
    58
    Ok, new to this. ty

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