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Pumping Away on a One-Boiler Hot Water Heating System

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HeatingHelp
HeatingHelp Administrator Posts: 734
edited 12:56PM in THE MAIN WALL
Pumping Away on a One-Boiler Hot Water Heating System

Dan Holohan talks about applying the concept of Pumping Away on a one-boiler hot-water heating system. He’ll walk you through a diagram and explain how Pumping Away will help you stop air from getting into your radiators.

Read the full story here

Comments

  • bdubya
    bdubya Member Posts: 19

    Great information. It would be great if older early 1900’s systems with circulators installed in the return side and larger bladderless style tanks installed in the ceiling joists were explained as well. I know pumping away applies to both system architectures but for techs who rarely see those old systems, understanding the complexity of that type of system takes knowledge of how they cannot be treated the same diagnosing or repairing.

  • leonz
    leonz Member Posts: 1,932

    I am glad I replaced my old bladder system with a steel compression tank for my coal stoker boiler as it solved a number of problems for me. no more crawling around to bleed baseboard radiators either. My artificial knees would not have that!

    If I had known all this 44 years ago, I would have demanded the plumber leave my large open to air steel expansion tank hung in the ceiling for the hand fed wood and coal boiler that was tied in parallel with my AVCO Lycoming oil boiler.

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