Results 1 to 8 of 8
  1. #1
    Join Date
    Nov 2005
    Location
    upstate ny
    Posts
    1

    Hmm

    will using hot water to feed a boiler through the water feeder be any differnt than cold water feeding? the pressure relief has been going off and i cant seem to figure out why. can any one help?

  2. #2


    Welcome to HVAC TALK.

    Here's something to think about...

    When was the last time you had that unit cleaned and serviced?

    Now you have a problem with the unit. Fuel costs are skyrocketing.

    So why not call in a professional to correct the problem and look over your heating equipment? While they are there they can clean and inspect your unit to insure a safe living environment for you and your loved ones. Not to mention, having an efficient running system could save you more than the cost of the service.

    What's your safety worth? I'm guessing more than the repair bill.

    Thanks for your understanding.

    (we can't help DIY, due to site rules )

  3. #3
    Join Date
    Jan 2003
    Location
    Kansas City
    Posts
    1,484
    There are a couple of possible causes for the relief valve to let go on a hot water boiler. The relief valve is a last ditch attempt to keep a boiler from going out of control and you do not want to depend on it on a regular basis. I strongly recommend you get the problem attended to ASAP.

  4. #4
    Join Date
    Nov 2003
    Location
    Oregon
    Posts
    48
    Hot water feeding shouldn't be a problem unless it is too hot for the mechanism in your pressure control valve.. Here is one of the things that I've run into that stupified me until I installed perssure guages next to the pressure controller. Every time something big tuirned off or on in the neighborhood, I'd see a spike in the pressure from the water line. There was no way to stop that, so I put in two pressure control valves in a row. One knocked the pressure down to maybe 50 pounds and the other was set at about 20 pounds. This took care of the problem.

    You should pay close attention to the suggestion that you have your system insspected as per the last thread. You don't want you and your family ending up out in the street. It is nothing to fool with.
    Best regards,
    Dick Peters, P.E./CM

  5. #5
    Join Date
    Aug 2001
    Posts
    1,936
    i would say expansion tank

  6. #6
    Join Date
    Feb 2004
    Posts
    2,597
    when the tech solves the problem, have him install a new relief valve, it's not designed to trip repeatedly.

    is there a low water cut off on this system? if not you may want to check on that too.

    good luck.

  7. #7
    Join Date
    Aug 2002
    Location
    manitowoc wisconsin
    Posts
    4,943
    Is this a steam or a hot water boiler? Depending on what type of system you have it could be a number of different problems for each one. A model and serial number of the boiler would help.
    Take your time & do it right!

  8. #8
    Join Date
    Apr 2003
    Location
    Iowa
    Posts
    763
    expansion tank is where I'd look toooooooooooooo

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event