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- over 480,000 plumbing related posts - Plbg.com - the popular
plumbing forum. Ask any toilet, sink, faucet, pump, water quality
and plumbing related questions. Baxi Luna HT330 Boiler Pressure
Author: Mitch581 (NY) Hi, It's mitch again from[...]
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Author: Mitch581 (NY) Hi, It's mitch again from Western NY. We are
still enjoying our Baxi Luna HT330 however I'm getting more thatn
1.5 bars on the boiler pressure on the gauge. When it reaches
around 2 of course (29.0075+ PSI) it drains out of the[...]
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Author: tommyb (NY) it could be the fill valve is faulty or needs
to be set lower....also youe expansion tank if you have one needs
to be drained or your ex-trol tank lost its charge...[...]
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Author: Mitch581 (NY) One thing I did try was to turn the screw
counter clockwise on the PRV to try and reduce the pressure going
into the system. When I opened the valve it still shot right up to
just over 2 bars. Could the PRV spring be bad? Is there[...]
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Author: Mitch581 (NY) I think what I'll try is shutting down the
system, drop the water pressure to zero on the system side and
check the air on the expansion tank. If that doesn't work then I'll
check the PRV and see if there is a problem with that.[...]
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Author: packy shouldn't have gone bad in 3 years, but the
information you have given leads to a bad PRV. pretty easy
replacement if there are isolation valves on either side.[...]
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Author: Mitch581 (NY) Thanks, there are isolation valves on both
sides. The lever doesn't move as freely as it should and the amount
of water coming in doesn't seem to be reduced by counter turning
the head screw. I may give that a try first. The[...]
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