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Pinnacle burner question.

JimmyJam
JimmyJam Member Posts: 78
in THE MAIN WALL
I ran into a 2 year old Pinnacle Model# P1-140 ASME boiler today that has a serious backfire upon ignition. This boiler has not worked since day 1 and has had numerous contractors attempt to remedy the problem.

I removed the burner and found it to be indenting the rear "target wall", (of which I have never seen before).

Disassembled burner tube and measured 7.25" overall length, it has a # 1703 stamped on the bottom.

Gas supply is adequate and the venting has a concentric kit through rim joist for a termination.

I have attempted to screw in the burner adjustment screw just to fire up the boiler to analyze the combustion but cannot get to fire without a large "poof"!

Any help would be greatly appreciated!

Comments

  • Guy_6
    Guy_6 Member Posts: 450
    Pinnacle

    That burner tube is supposed to indent the target wall: it helps to support the wall.

    The backfire is one of 3 things:

    1) exhaust gas recirc. Check the venting, match what you have to what's in the manual.

    2) Check the condensate drain- if condensate is backing up, it blocks the flue passages and will cause backfires.

    3) Check combustion on HIGH fire. You should get 100 or so PPM of CO. If it's low there, it's low on ignition too, therefore starting lean. But only for a moment....

    If all else fails, call Peerless Tech support.
  • JimmyJam
    JimmyJam Member Posts: 78
    Peerless

    Still have not received any tech support from local rep in regards to my problems.
    Thanks for replying Gary and to answer some questions I had pulled off the termination to eliminate any potential recirculation and plugged exhaust pipe to blow out condensate, cleaned heat exchanger and it still blew like the Discovery!

    I called the rep and told him everything I had and he has not received any calls from Peerless yet.

    The electrodes have been replaced and the gap is only about 1/16". I did not adjust and attemp to refire.I cannot find information on proper gap adjustment anywhere and the rep doesn't know either!

    This is very frustrating, as I want to take care of this new client ASAP!
  • Hot Pockets
    Hot Pockets Member Posts: 3
    Gap on electrodes

    If these are the same electrodes that are in the munchkins I have been gapping them at 1/4 in. You may be getting a delayed ignition.
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