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Power Purge valve from Dan Holohan, Pumping Away

OG_Simon
OG_Simon Member Posts: 12
in THE MAIN WALL
From page 48, Pumping Away. The valve arrangement for power purging the boiler. Sounds like a great idea, how would you adapt this concept to the new combi boilers? pics for reference.

Thanks

Comments

  • Big Ed_4
    Big Ed_4 Member Posts: 3,020
    Pipe in a purge valve between the returns and the boiler ...

    There was an error rendering this rich post.

    Intplm.
  • hot_rod
    hot_rod Member Posts: 23,405
    You have 3 shown in the blue piping in that schematic.
    Or you could use a single purge ball valve next to that blue manifold, delete the 3 single valves and boiler drains.

    Isolation valves at the pumps, always a good idea, would allow you to purge one zone at a time.

    The version with two purge valves would allow you to connect a purge pump for cleaning or adding chemicals
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

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