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Installation of a Vaporstat

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cdm
cdm Member Posts: 77
in Strictly Steam
I want to install a a Honeywell Vaporstat on my recently installed Peerless Boiler. Which model is the one to replace my Pyrotrol? The L408J 1027/U or the 1033/U. Or is there a suggestion for another model, or something else to control the system at low pressures?

thanks -cdm-

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  • Jamie Hall
    Jamie Hall Member Posts: 23,327
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    None of the above. L408J1009, 0 to 16 ounce, break on rise.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • mikeg2015
    mikeg2015 Member Posts: 1,194
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    I have the L408J1009 But, my system runs normally around 1-2oz. May need the higher range in most cases. Just depends on header size relative to boiler size and overall venting rate relative to boiler size and pickup requirements.
  • Dave0176
    Dave0176 Member Posts: 1,177
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    Don’t run the 0-3 lb gauge youll get a better reading with 0-35 oz gauge.
    DL Mechanical LLC Heating, Cooling and Plumbing 732-266-5386
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  • cdm
    cdm Member Posts: 77
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    All - Thanks for your suggestions = Looks like a 0-16 oz vaporstat, closing on rise, with 0-16 oz Gauge would be thw right combinztion = thanks-cdm-
  • Jamie Hall
    Jamie Hall Member Posts: 23,327
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    cdm said:

    All - Thanks for your suggestions = Looks like a 0-16 oz vaporstat, closing on rise, with 0-16 oz Gauge would be thw right combinztion = thanks-cdm-

    Closing on rise? Um... don't you want the boiler to shut down when the pressure rises to the set point???
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Fred
    Fred Member Posts: 8,542
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    You want a 0 - 16 ounce Vaporstat that open on rise, Model # L408J 1009. And you want a 0 to 32 ounce or a 0 to 3 PSI gauge. A 0 - 16 ounce will work but give yourself a little more "forgiveness" should the Vaporstat fail or the pigtail gets clogged.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,545
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    You should keep your existing pressure control as a back-up
  • JohnNY
    JohnNY Member Posts: 3,231
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    Yes, cdm. Wire R-B, not R-W, to break on rise.
    Contact John "JohnNY" Cataneo, NYC Master Plumber, Lic 1784
    Consulting & Troubleshooting
    Heating in NYC or NJ.
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