(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 8 of 8

Thread: Newbie hydronic questions!

  1. #1

    Question Newbie hydronic questions!

    I've just bought an older house with hydronic baseboard heating. The boiler is only a few years old.

    1 - Is it normal for the circulating pump to run all the time, even when heat is not needed?
    2 - Is it normal to be able to hear the pump running ( the sound seems to be conducted through the pipes)?
    3 - One room's heater doesn't give off any heat. Its valve seems to be open. I've been told to drain it to remove air bubbles - how is this done?

    Thanks!

    Paul

  2. #2
    Plunger/TurdPuncher kingsotall's Avatar
    Join Date
    Aug 2008
    Location
    Flagstaff, AZ Sitting on an upside down 5 gallon bucket next to the GO 68HD
    Posts
    1,260

    Default

    You need a mechanic that is highly skilled in boilers to be maintaining this system. That is the only advice I can safely offer.

  3. #3
    DIY Member msgale's Avatar
    Join Date
    Sep 2006
    Location
    Ohio
    Posts
    90

    Default

    you can remove air, if that's the case, by opening the air vent located near the topof the radiator, you may need an odd square wrench to open it.

    Open the valve, and have a rag ready, keep it open a s long as you hear the air escape-a few seconds, maybe more.
    as soon as water comes out, turnit off and hope you caught it w the rag.

  4. #4

    Default

    Thanks folks.

  5. #5
    Master Plumber nhmaster's Avatar
    Join Date
    Jul 2008
    Location
    S. Maine
    Posts
    2,039

    Default

    No, the circulator should only run on a call for heat. No the circulator should not be very loud. probably has a bad coupling, bearing assembly or motor mounts. And removing the air may have to be done at the boiler, from the purge & balance valve.

  6. #6
    DIY Member cattledog's Avatar
    Join Date
    Jan 2006
    Location
    Portland, Oregon
    Posts
    42

    Default

    #1. Depends. Some systems are set up for constant circulation, but you could have a failed relay or some other problem in the controls which has left the pump constantly running. More information required.

    #2. No. Pump could be shot or original installation and vibration isolation could be poor. Noise is subjective and one persons quite could be anothers noisy. System could have been set up noisy from day one if the original owner/installer did not care.

    #3. Bleed the air out. If that does not work then there is something thing else wrong, and you will have to provide more information about your piping arrangements for this forum to help troubleshoot.

  7. #7

    Default

    Ahhhhhh... Our friend air... Pump should NEVER be wired to run constantly. (unless you own a pump factory?)

  8. #8
    Web Development | HVAC patsfan78's Avatar
    Join Date
    Jun 2009
    Location
    Maine
    Posts
    33

    Default

    Circulators should never run all the time, there is no need. Sounds like a bad relay or a bad install.

    You will hear sound depending on the location of the pump to where you are hearing it. Check to see how well your piping is secured, you maybe able to tighten them up a bit.

    Get the air out... annoying problem but a simple solution.

    good luck,
    mike
    www.HiTechHeat.com

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
  •