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One extreme to the other

Stewy_2
Stewy_2 Member Posts: 83
in THE MAIN WALL
Had a boiler (WM P366 w/Beckett AFG) that couldn't warm up a house to save its life. Changed the nasty filters and the nozzle from /A .75 80/ to /A .85 80/. Had a pro come this morning and adjust the air intake and the draft damper and do all the other things techs do. He did an efficiency test afterward, 81%. Now the boiler makes unreal steam, it seems too much. Things bubbled and oozed that never did before, radiator valves hiss and you can hear them opening and closing, but they didn't before. Pressure gauge (brand new) got up to 4psi, didn't before (Ptrol is set @ 0.5/diff set @ 1) and the boiler shut off. Is the .85 nozzle too much now that she is clean and tuned.

Is the equalizer down to the the Hartford loop as well as the Hartford loop and condensate return pipes, suppose to be as hot as the other pipes?

I re piped the boiler w/ a 2" drop loop header to replace the cooper that was there. I also got rid of the bullhead tee that fed my 2nd 2" main (which has not yet been re-installed so there are only 3 working rads right now, not sure if that could add to the "upped pressure")Any thoughts, thanks

Comments

  • Empire_2
    Empire_2 Member Posts: 2,340
    My .02

    I think your problem is that the 3 rads that you have connected are easily satisfied and I think the until you reconnect the main, you have 2 much boiler for what rad's you have. Steam builds quickly and is overshooting the P/Trol. From .75 hollow to .85 is not that big of deal, but go by what the manft. wants. Even though the boiler has cut out,....The residual steam is quickly over shooting your settings. I also think the .75 was sufficient.

    Mike T.
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