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Robert O'Brien
Robert O'Brien Member Posts: 3,541
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  • Steamhead
    Steamhead Member Posts: 16,899
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    District high-pressure hot-water IIRC.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    Zman
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,646
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    I'm sure rules and regs are different in Russia.

    All of the district HPHW (200psi) I've worked on has a big flat plate HX in the "boiler room" and had normal 30-50 psi reliefs and 180 or less operating temps in the building. No HPHW was allowed to be in the building accept for the stubs in the mechanical room. It was still scary stuff! All welded SCH 80. it's crazy how much energy can go through a pair or 1" pipes.
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!