Tarm Solo 40 running high pressure

Reggie Dunlap Posted By Reggie Dunlap, Jan 2, 2013 at 10:51 PM

  1. Reggie Dunlap

    Reggie Dunlap
    Feeling the Heat 2.
    NULL
    

    Dec 13, 2005
    314
    1
    Loc:
    Northern Vermont
    I've had my Tarm for 5 trouble free winters now, hooked up to 750 gallons of storage. Today it started running at 20-25 PSI for some reason, it's always been in the 10-15 PSI range. Nothing else has changed that I know of, other than it's 15 below right now.

    Any ideas or thoughts would be appreciated.
     
  2. Floydian

    Floydian
    Feeling the Heat 2.
    NULL
    

    Dec 12, 2008
    459
    98
    Loc:
    Southwestern VA
    Do you have a bladder expansion tank(s)? That would be the first thing I'd check. Or maybe an autofill gone wacky?

    Noah
     
  3. Reggie Dunlap

    Reggie Dunlap
    Feeling the Heat 2.
    NULL
    

    Dec 13, 2005
    314
    1
    Loc:
    Northern Vermont
    Yes I have an expansion tank. Could be the autofill, I guess I should shut the supply off to it.
     
  4. Reggie Dunlap

    Reggie Dunlap
    Feeling the Heat 2.
    NULL
    

    Dec 13, 2005
    314
    1
    Loc:
    Northern Vermont
    I should also add that my storage is unpressurized.
     
  5. rcollman

    rcollman
    Member 2.
    NULL
    

    Dec 13, 2008
    58
    1
    Loc:
    Northern NH
    Ditto the cold in Norhtern NH. It is now (noon) a balmy 0 outside up from -16.4 at 7:15 AM.

    And ditto check the autofill. I seem to recall that happened to us in the first season. I got a small bucket with a handle. Turned off the autofill, and drew off some water out of the system next to my backup boiler. Alternatively you should have a pressure relief value, with a handle at the top and a pipe pointed to the floor, or into a drain. It will take less than 2 cups of HOT water out of the boiler to reduce the pressure.

    I think I turned the autofill back on and the pressure did not build up again. Wrote it off to some installation grit keeping the valve open.


    Stay warm!
     
  6. Reggie Dunlap

    Reggie Dunlap
    Feeling the Heat 2.
    NULL
    

    Dec 13, 2005
    314
    1
    Loc:
    Northern Vermont
    Yep, cold here too. 18 below this morning, now around 0.

    I think it is the autofill. I shut it off and drained enough water to bring it down to 15 PSI with the boiler at 180 degrees.

    Thanks for the help.
     
  7. KenLockett

    KenLockett
    Minister of Fire 2.
    NULL
    

    Dec 27, 2011
    520
    104
    Loc:
    Eastern Upstate NY
    Reggie, did you buy your storage tank from Biomass USA in NH?
     
  8. Reggie Dunlap

    Reggie Dunlap
    Feeling the Heat 2.
    NULL
    

    Dec 13, 2005
    314
    1
    Loc:
    Northern Vermont
    No, I built it out of concrete block with an EPDM pond liner. I wish it was closer to 1000 gallons, but it works great going on 5 years.
     

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