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    Another thermostat question for one pipe steam system (2 Posts)

  • Dima Dima @ 2:57 PM
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    Another thermostat question for one pipe steam system

    Hi All.

    This probably will be the millions thermostat question on
    this board but I need some help selecting a new thermostat and specifically the
    right CPH setting.

     I have a two family house (two floors) with a one pipe steam
    system. However, instead of cast iron radiators, the system has iron/steel
    (black pipe) find tube convectors.  I
    want to replace the old original Honeywell round thermostat with a digital one.
    Almost all of the threads I read here recommend getting a Honeywell Vision pro
    series thermostat with adjustable CPH and set it to one cycle per hour. This
    setting would probably do well with cast iron radiators, but I am concerned it
    might not work well with convectors since they get hot and cold at much faster

    Could anyone please advise on a  correct CPH setting
    for my system?

    Any advice is appreciated.

    PS.  I read somewhere
    ( I think on this forum) that select White Rogers thermostats have an option to
    select the type of radiators in the system but I can’t seem to find a model
    that does it. Did anyone hear about such a feature on their thermostats?

    Thank you.
  • JStar JStar @ 6:21 AM
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    1, 2, ?

    The vision pro allows any number of CPH up to at least 9. Start at 1. If it doesn't work, try 2. It's less scientific than you think.
    - Joe Starosielec

    Guaranteed performance. Guaranteed energy savings.

    Serving all of NJ, NYC, Southern NY State, and eastern PA.
    Consultation anywhere.
    (Formerly "ecuacool")
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