(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 3 of 3

Thread: Radiators warm with no call for heat

Hybrid View

  1. #1
    DIY Junior Member rrcur's Avatar
    Join Date
    Dec 2011
    Location
    Southern Maine
    Posts
    14

    Default Radiators warm with no call for heat

    I have a small old house with a single zone forced hot water heating system. The boiler is a fairly new Dunkirk Empire II oil unit with a coil for hot water. There are two main loops served by one Taco circulator pump.

    In the basement, I've noticed that the return pipes in ONE of the two heating loops are very hot for their entire lengths, even though the thermostat is turned all the way down and I'm not calling for heat. All of the supply pipes and the OTHER return loop pipes remain cool to the touch.

    If I open the shut-off valves on the radiators that conenct to these warm pipes, I will eventually feel heat from the radiators.

    Do these sound like symptoms of a problem I should be concernd about?

    I'd hate to be burning more oil than necessary through the summer.

  2. #2
    Plumbing Contractor for 49 years johnjh2o1's Avatar
    Join Date
    Aug 2009
    Location
    South*East
    Posts
    1,121

    Default

    You have a bad or open flow check valve.

    http://www.watts.com/pages/_products...=64&parCat=256

    John

  3. #3
    DIY Junior Member rrcur's Avatar
    Join Date
    Dec 2011
    Location
    Southern Maine
    Posts
    14

    Default

    Thanks, John. I'll check this.

    Would this cause the boiler to cycle more often?

Similar Threads

  1. Column Radiators and Baseboard radiators
    By johnfrwhipple in forum HVAC Heating & Cooling
    Replies: 19
    Last Post: 11-27-2012, 06:17 AM
  2. what do they call this fitting?
    By billfig in forum Pumps and Tanks Well Forum & Blog
    Replies: 4
    Last Post: 03-09-2011, 01:11 PM
  3. Washing Machine -Warm Cycle is not warm
    By IhavenoideawhatI'mdoing in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 6
    Last Post: 07-15-2009, 06:25 AM
  4. DIY or Call a Professional?
    By valveman in forum Pumps and Tanks Well Forum & Blog
    Replies: 0
    Last Post: 06-29-2009, 09:49 AM
  5. hot water luke warm in morning when heat kicks on
    By sueum97 in forum Shower & bathtub Forum & Blog
    Replies: 2
    Last Post: 02-02-2007, 11:34 AM

Tags for this Thread

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
  •