Weil McLain boiler with Honeywell zone valves, making a strange noise.
This is very common with Honeywell zone valves, when they close with
the circulator running they bounce. All the things the plumber did were
what I have done in the past, sometimes it works and other times it does
not. When ever I found a situation where I could not make the fast
closing Honeywell zone valves from bouncing, I replaced them with slow
opening and closing Taco zone valves Please see the type I am talking
about. Taco Zone Valves. .
Wow, thanks for the quick reply! If I could pick your brain a little
more. This noise occurs when the valve is open in the middle of the heat
cycle. It's not during opening or closing. However removing the small
spring did seem to improve things somewhat. Generally only the one zone
is open because I keep the basement tstat very low. However like I said,
manually opening the basement zone makes the noise stop for a few hours.
Very weird. The plumber wants to come back and cut out the zone valves
and replace the whole valve but doesn't think the problem will be
resolved. Any ideas? Also the tstat is a brand new Honeywell digital
Wi-Fi so I'm not sure there is any adjustment.
A by pass loop may help, it sounds like the pump is too large or too
fast for the single zone. Can you send pictures of the boiler the zone
valves and the circulator?
The sounds occurs toward the end.
(I was able to listen to the sound clip sent by Jim, but am not
able to post on this website, but I can hear something rattling around
inside the pipe)
(I was able to listen to the sound clip sent by Jim, but am not able to post on this website, but I can hear something rattling around inside the pipe)
OK Jim This is not a bouncing noise, I assumed it was the typical noise a zone valve makes when closing,
There is definitely a piece of something in the pipe. I would remove the plate to the zone valve and flush it out. something is in there.
Yeah that's what my plumber was thinking also. He did, as I said,
replace the larger valve head and ball piece behind it. There was some
stuff that looked like pipe dope on the ball. Which I believe was from
when he moved a baseboard radiator for me the same day he did the zone
valves. However he never did this for the basement zone valve which is
the one you heard making that noise when I manually open it. I suspect
that maybe the issue or perhaps some solder from when it was sweated in.
That's why he wants to cut the whole valve out. In case it's a piece of
solder. I do get a whining sound from the circulator when it's running
but this was there before the zone valve replacement. I just assumed
this is a normal sound but maybe it indicates a pump that's going? I'm
thinking it may be best to have the valves changed and purge the pipe to
insure nothing is in there and replace the circulator while the system
is drained down also to be safe. What do you think?
I can't thank you enough for your expert help. As you can see I
have been dealing with this issue back and forth for several months now.
My plumber is great and is a licensed plumber for some 30 years like
yourself but he is clueless about this one. Having said that I think he
does more plumbing than repair work.
I think you are right, let him do all of that, but a real good
flushing with the full size pipe open is the best way to be sure all of
what is in there gets flushed out.
You are very welcome, Nice talking with you Jim. Thank you for using The 24/7 Help Line.
Thomas Petito Reardon