Tarm Solo 40 running high pressure

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by Reggie Dunlap, Jan 2, 2013.

  1. Reggie Dunlap

    Reggie Dunlap
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    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.
     
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  2. Floydian

    Floydian
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    Do you have a bladder expansion tank(s)? That would be the first thing I'd check. Or maybe an autofill gone wacky?

    Noah
     
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  3. Reggie Dunlap

    Reggie Dunlap
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    Yes I have an expansion tank. Could be the autofill, I guess I should shut the supply off to it.
     
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  4. Reggie Dunlap

    Reggie Dunlap
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    I should also add that my storage is unpressurized.
     
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  5. rcollman

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    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!
     
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  6. Reggie Dunlap

    Reggie Dunlap
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    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.
     
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  7. KenLockett

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    Reggie, did you buy your storage tank from Biomass USA in NH?
     
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  8. Reggie Dunlap

    Reggie Dunlap
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    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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