OK, I've heard this, and at the moment may be a victim of it.
My Weil-McLean boiler appears to be leaking, so sayeth the service
folks. They believe its got a cracked boiler (they can't get the side
panel off because the hot water tank is right next to the boiler).
How prevalent is this as a problem?
Could running the water through the boiler backwards help to cause this
The circulator pump doesn't have an arrow on it, but I'm pretty sure
its pumping water into the top of the boiler, and out the bottom. This
would be bass-ackwards, would it not?
That may be backward but it would induce less stress on the tank because now
the coldest water is not directly entering the hottest part of the boiler
(bottom). I would expect thermal stress cracking to occur if you poured
very cold water into a very hot section of the tank (which should not happen
if the tank is filled) The leak is probably due to age and rust like is
common in a residentail hot water heater
That only says that your boiler lacks the capacity to heat your home
efficiently. What are the absolute temps. If water is coming out at 80C
and returning at 50C. That would not induce a temperature stress crack.
Low efficiency could be accounted for by a thick buildup of scale (lime or
rust) in the tank. Can the tank be purged, have you ever?
Have they measured the pressure of the inlet water supply? Is the pressure
relief valve on the boiler functioning properly (excess pressure could have
bulged the tank and cracked a seam). Are there obstructions in the water
loop reducing flow rate and increasing outlet pressures at the pump head?
I don't know what the absolute temps are, and if this boiler gets
replaced (as opposed to a section replaced) I'm going to be very
involved to make sure the right boiler goes in, not just a
I moved in this past May, don't know if its ever been purged. I do know
my water is fairly hard, and still haven't cleared up issues involving
the water softener.
This leak started immed. after a full service/cleaning, and everything
After the service the relief valve dripped, and I though that was
causing all the water on the floor. It wasn't, the valve was leaking
and the boiler was, as well.
I do know that the boiler typically has 180 deg. F at 10-15 lbs
pressure, according to the guage on the unit.
The service co. could not fully remove the outer shell because of space
issues, I checked with them and they OK-ed me (from the potential
warranty perspective) to go in there with the nibblers and cut the
sheet metal covering to expose the leak, so we can see what's actually
Thanks for the input, and on a few more things to check.
Well that'll fucking GUARANTEE that it will work properly!
You a GOTT DAMN GENIUS!!
I wish I could get you to come to all of my jobs and make sure they are
Just from reading your original post, you don't know WHAT the fuck you are
doing! And you are going to make sure you get the right boiler??!!
Go ahead. Stand right over top of the person that's installing your
equipment. They'll just LOVE you and your "expertise"!
Excuse me you stupid, motherfucking, daddy's-cock-sucking, best part of
you ran down your mother's leg piece of shit, but the service co might
just assume that whoever installed the thing previously had done the
goddamn calculations (that's assuming the bastard that owned the house
didn't put it in himself), and if I ask the co "what size SHOULD go in"
that is hardly standing over them.
Being involved and asking questions is not the same as strutting around
and 'supervising'. I was a professional mechanic, and I know what
There's a big difference between an involved customer that wants to
understand what's going on, and someone that's telling you what to do
(service rate is double for the latter group).
You are another alt.hvac retard, ain'tcha, that needs to shit on
people to make themselves feel big, so tell me, how's that working out
for you? You feel big now, you fucker? Gonna head on over to alt.hvac
and tell 'em how you flamed an arrogant stupid thinks-he-knows-it-all
ho-moaner? Well, go have fun, scooter, and remember if you keep the
beer warm ain't no one gonna want any so you can have it all to
youreself, on those rare occaisions when someone actually visits your
fleabag sour-stink-of-failure singlewide.
So GO FUCK YOURSELF and head back to alt.hvac and flame the
homeowners who mistake it as a group of and for dedicated
professionals, as opposed to the pissy little playground for the
disgruntled retards that you and others like you have turned it into.
"This is really excellent writing. I may make it into a text file, and
insert it into emails when words fail me. Well done! "
Feel free to use it...
I have actually seen the warm-beer trick used, but he had a house, not
Shit, apologies to Red there, I thought he was an alt.hvac retard,
turns out he's an equal-opportunity retard across many groups. So where
I put alt.hvac just read whatever group you like to go to, whether it
be home repair or cigars...
Red, you should go to alt.hvac you'll fit right in.
The old "I serviced it and now its suddenly broken" scam. Seen it happen to
many an automobile, especially when you clean the carb.
probably knocked the chunk of lime scale that was plugging an ancient leak
loose when you purged the tank. Given the entirely unknown service record,
its safe to assume, it has never been maintained.
Might be SOL.
I understand, Due diligence is not the same as micromanagement. Just let
the guy work in peace once you make up your mind - right.
PD, I don't *think* they purged it as part of the service- it wasn't on
the invoice, and they didn't mention doing that.
They had trouble getting the cover off, but when I went home it was 4
screws and the section of cover came right off.
There's a crack in the front section of the boiler, on the side, just
above the cast-in boss for the upper-right hinge pin for the burner
With the unit not running it looks like a pinhole, soon as it fires you
can see its a 1/2 inch or so horizontal crack. It does show evidence of
having been a slow leak for awhile, not enough to drip but wet enough
to rust a fair amount.
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