Newsgroups: alt.home.repair, alt.hvac
From: .p.jm@see_my_sig_for_address.com - Find messages by this author
Date: Mon, 19 Dec 2005 17:29:02 GMT
Local: Mon, Dec 19 2005 11:29 am
Subject: Re: baseboards bled, but still no heat
....@see_my_sig_for_address.com wrote :
Hey MF, are you having problems with the
meaning of alt.hvac, or just the pronounciation'
of alt.hvac, or perhaps the spelling of alt.hvac?
Or maybe you don't know how to use a filter
file because you are just butt fucking dumb.
Let me guess, you're an american, no?
I'll add my .02.
Your circulator is on the return side, so one would normally suspect
an air lock, especially with one zone (sort of) working.
If I understand you, you:
1. Made sure makeup feed valve was full open.
2. Closed the shutoff on the return line of one of the zones.
3. Opened the drain valve on the inlet side of the circulator. This
allows water to flow from the makeup feed, through the backflow
preventor, through one of the zones, and out the drain valve. Flow was
good and strong.
4. You repeated this for the other zone.
If this is what you did, you pressure purged the system properly, and
should not have significant air in the loops.
If you are then still not getting circulation it is most likely the
But you can try another thing first.
I don't see a boiler drain valve in the picture, but I assume there is
one there. Turn off the burner and let things cool a bit. Close
the valve on the outlet side of the boiler. Repeat your purge but
use the boiler drain valve instead of the one up on the inlet side of
the circ. This will force water to flow through through the
circulator and the boiler.
If you still get a solid, forceful flow (not just the boiler draining,
then it really is most likely the circulator.
Shut it down, close all the valves, and drain the boiler down below
the point where the circ is plumbed in. Remove the circ and bench
Yep, that's what we did for both zones.
We did try one more thing to try to rule out air and/or a frozen line: We
ran hot water through each zone, using the utility sink as our hot water
source. I won't bore you with details of how we did it( unless anyone's
interested ), but all baseboards are working properly, nice and hot. This
also allowed me to verify where the piping goes in the first floor where
everything is embedded in concrete :)
<snipped the rest>
I'm now convinced it's the pump, and picked a new one up today. Once I get
the old one off, and prove that it's fried, I'll install the new one :)
Thanks everyone for the prompt responses!
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.