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Steam heat thermostat, why 1 cycle per hour?

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adamfre
adamfre Member Posts: 122
in Strictly Steam
Just needing some education. Why would I want to use a thermostat I can set for one cycle per hour?

Just want to stay warm in the winter. :D

Comments

  • JUGHNE
    JUGHNE Member Posts: 11,061
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    My best guess is to have only one long cycle because of the time needed for air removal per cycle. The cast iron retention of heat would carry you thru the off cycle. IMO
  • ChrisJ
    ChrisJ Member Posts: 15,672
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    On systems that vent fast and are balanced well you'll find you can do better with 2 CPH.
    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
    RomanGK_26986764589
  • RomanGK_26986764589
    RomanGK_26986764589 Member Posts: 229
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    I agree with Chris. My T-Stat is set at 2 CPH and it operates very well.
  • LionA29
    LionA29 Member Posts: 255
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    @RomanGK_26986764589 what kind of T-Stat you have?
  • SWEI
    SWEI Member Posts: 7,356
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    I still think we need a 1.5 CPH option.
    delta TDave in QCA
  • delta T
    delta T Member Posts: 884
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    I think we need everything in between, from .5 to 3 in .1 CPH increments. Or you could have the thermostat decide too, based on a minimum run time that you input into the stat.
  • KC_Jones
    KC_Jones Member Posts: 5,737
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    SWEI said:

    I still think we need a 1.5 CPH option.

    Theoretically @ChrisJ and I could do that with the EcoSteam. It has the ability to set the cycle time in minutes. The issue would be that the thermostat controlling it only has 1,2,3 so they wouldn't match. That could/would cause issues.
    2014 Weil Mclain EG-40
    EcoSteam ES-20 Advanced Boiler Control
    Boiler pictures updated 2/21/15
  • SWEI
    SWEI Member Posts: 7,356
    edited November 2016
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    It's mostly about mass. Given that it's an inverse function, it should really step using log(something) increments. The difference between 11 & 12 CPH is drastically different than the difference between 1 & 2 CPH.
  • RomanGK_26986764589
    RomanGK_26986764589 Member Posts: 229
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    @LionA29 I have Honeywell FocusPro 6000.
    LionA29

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