(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 5 of 5

Thread: Is this boiler piping correct?

  1. #1
    DIY Junior Member Westward's Avatar
    Join Date
    Nov 2011
    Location
    Owings Mills, MD
    Posts
    1

    Default Is this boiler piping correct?

    The installer said he had never done a hot water system before. He installed the heat pumps and air handlers.
    Attached Images Attached Images  

  2. #2
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,615

    Default

    I assume the pump runs continuously which is the reason for the bypass valve. I would have installed an "air scoop" at the boiler to extract any air bubbles BEFORE they got into the system. The upper air vent is merely a "second line of defense" against air bubbles but will be ineffective for the two unit heaters ahead of it.
    Licensed residential and commercial plumber

  3. #3
    DIY Junior Member HappySoul's Avatar
    Join Date
    Nov 2011
    Location
    Maryland
    Posts
    13

    Default

    The pump is on the wrong side of the expansion tank. The air vent should be on top of the expansion tank. There is most likely other things wrong that may be dangerous that don't show here.

  4. #4
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,615

    Default

    The expansion tank responds to changes in the boiler due to temperature changes, NOT the pump. An air vent "on top of the expansion tank" would vent the precharge out of the tank. There should be an "air scoop" at the boiler and the air vent would be on top of IT.
    Licensed residential and commercial plumber

  5. #5
    In the Trades Tom Sawyer's Avatar
    Join Date
    Nov 2010
    Location
    Maine
    Posts
    2,936

    Default

    The pump is on the right side of the expansion tank. Pumps should be installed so that they are pumping away from the tank because away causes no changes in head. Dan Holohans book "Pumping Away" is a must read for any hydronic system installer and especially for a lot of old timers that have been doing things the same (wrong) way for years and years.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

Similar Threads

  1. Removing Boiler Plug from a Steam Boiler
    By dsorkin in forum Boiler Forum
    Replies: 2
    Last Post: 12-16-2011, 09:20 AM
  2. Redoing Boiler piping
    By acmpcm in forum Boiler Forum
    Replies: 6
    Last Post: 02-21-2010, 07:01 AM
  3. Boiler replacement, piping configuration?
    By luc in forum Boiler Forum
    Replies: 0
    Last Post: 02-04-2010, 01:33 PM
  4. Boiler piping
    By LT Dan in forum HVAC Heating & Cooling
    Replies: 7
    Last Post: 10-28-2008, 09:42 PM
  5. Back boiler & oil boiler to twin copper cylinder
    By sheen in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 2
    Last Post: 12-07-2006, 04:34 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •