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Set it to 160F or lower, if it's for domestic hot water. Mark it so that it won't get mistaken for heating control again. Also, with good traps and dry return vents, the operating pressure probably can be reduced to ounces, say, 8.


  • david_44
    david_44 Member Posts: 4
    2 pipe steam; Dan HELP!

    I have just found something i have NEVER seen or heard of! I am servicing the steam traps at a local church that havent been done for years, when i had the heat turned down i heard the boiler running so i went to investigate and found that this boiler was making steam off an aquastat!, it was set at 240 degrees and setting there at 8 PSI! I have never seen anything like this! I have replaced a few steam boilers and worked on some different systems but this is new to me. Please someone tell me this is not right so i can justify making the changes
  • Big Ed_3
    Big Ed_3 Member Posts: 170

    Usually you will find a aquastat on a steam boiler if it produces the hot water , or if there is a condensate heating loop .

    And yes steam will be produced at 212* at sea level and 160* up on Pikes Peak ...

    Someone jacked it up by mistake . My guess with a Church ......one of the members turned it up because thats what he does on his hot water boiler ..

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