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Simple 2 Pipe Vacuum Setup

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Comments

  • Fizz
    Fizz Member Posts: 547
    Vacuum vents are on air/condesate returns, none on supply mains.
  • PMJ
    PMJ Member Posts: 1,266
    > @Fizz said:
    > Have been using vacuum in my system for one year since last March just using 2 Mepco quick vents(vacuum) one on each dry return(Richardson System) no other stuff. My system is set for 3cpm on hot water setting of t-stat. Vacuum is between 2-4, except on extremely cold days-single digits and below, where a run of about 13-14" will lower vacuum to 9-10. My usual run time has been6-7" per fire. Heat has been steady and comfortable. No vapor lock.. Pressure never gets above 0 on run.

    Great @Fizz . You've got it. Thanks for sharing that.
    1926 1000EDR Mouat 2 pipe vapor system,1957 Bryant Boiler 463,000 BTU input, Natural vacuum operation with single solenoid vent, Custom PLC control
  • Fizz
    Fizz Member Posts: 547
    Got it from you PMJ, thanks!
    Koan
  • Koan
    Koan Member Posts: 450
    @Fizz - do you know the vent flow of the Mepco? is it zero cracking pressure?

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