staining under flue down basement wall, like waterfall


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Old 02-22-11, 12:13 PM
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staining under flue down basement wall, like waterfall

brand new member looking for help. neighbor asked me to look at boiler (she's an older woman, widow). where flue exits basement (above grade) and enters chimney (brick), there are stains. all colors ,from light tan to dark (almost black). running down the wall to the floor. house is only 8 years old. vinyl siding, brick chimney (like 30' tall). capped on top. will try to post some pictures. she does get pooling water sometimes. she doesn't know exactly when. i'm guessing heavy rain, wind .
 

Last edited by kmulholl; 02-22-11 at 12:55 PM.
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Old 02-22-11, 12:31 PM
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please post pics to a site we don't have to join such as photobucket
 
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Old 02-22-11, 12:33 PM
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sorry, i didn't realize you had to join. i'll do photobucket now.
try this:
Pictures by kmulholl - Photobucket
 
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Old 02-22-11, 05:49 PM
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Since the problem only seems to be with the boiler & not the water heater it points to either a problem with the boiler or if the chimney has two flues, only the flue serving the boiler.
It looks like the relief valve discharge pipe is heavily corroded. Any indications as to why?
There also appears to be an oil stain(?) under the boiler's burner.
 
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Old 02-22-11, 10:20 PM
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The HWH is tied in with the boiler flue and exits to the chimminey 6x6 tile.

I would say.

A. Rain. Have a look after it rains see what you see.
B. Boiler has a crack and leaks when hot and making lots of condensation.
C. Flue is condensating for some other reason. Water Temps?


The pressure looks high. 30 PSI??? Looks like temp at 180. Could you verify?

Relief valve pipe looks like it has a hole in it from corrosion.

Thats alot of water staining on the floor.

Instead of wainting for rain run the boiler and let us know what you see.


Let us know what the pressure and temp say on the boiler gauge.

Mike NJ
 
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Old 02-23-11, 02:38 PM
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ADDED SOME PICTURES. cycled the burner 2 times today, pressure reads 40 (constant), temp 170 - 180, relief valve says 30, no water visible though. forecast is for rain next couple days, i'll keep checking it out and post findings, thanks for any help. diff is set to 10, not sure you can see in picture.
 
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Old 02-23-11, 03:42 PM
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Pressure is too high. This can be a dangerous situation. This is assuming the gauge works and moves.

You need to do this. Allow boiler to cool to less then 100F

1. Change the relief valve asap. (picture 8)
2. While the pressure is off the boiler while changing the relief valve you need check the expansion tank pressure. Its that green tank. Check with a tire gauge. Should be 12 psi. If water come out of air valve replace tank.(picture 12)
3. While the pressure is off change all air vents you can find. (Picture 5)
4. When you turn the fill valve back on to the boiler the pressure gauge should rise back to 12 psi and stop. If it keeps going higher pat say 20,30,..ect you need to replace that fill valve. (cant see in pic.)

Let us know.

Mike NJ
 
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Old 02-23-11, 04:20 PM
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thanks mike, i thought 40 psi was high. that psi needle didn't budge the whole time i was down there (not sure if it works). will check the tank pressure tomorrow when i'm over that way. thanks again
 
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Old 03-26-11, 12:30 PM
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sorry, been away from computer. stains must be from debris in elbow of chimney,clay liner that flue pipe enters, turns upward to chimney. when water gets in, flows past morter at flue/basement wall . ,removed flue had about a cubic foots worth of clay chips, mortar, some large stones (1.5" diam). i think most was from orig chimney construction. anyway, cleaned it out, vacuumed and clean up the mortar around flue.
had pressure/ temp gauge replaced, still goes up to 30, new pressure relief valve lets small puddle of water out. will have oil guy check it out (homeowner has contract). thanks
 
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Old 03-26-11, 12:50 PM
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Sounds like expansion tank or fill valve. See post #7

If you lost tiles in your chimmney it could be dangerous. CO issues. Chimmney should have a lining installed.

Mike NJ
 
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Old 03-26-11, 03:30 PM
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Originally Posted by kmulholl
will have oil guy check it out (homeowner has contract).
I'm wondering why you are fiddling with the system if you aren't the owner. Normally, not a good idea.
 
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Old 03-27-11, 09:24 AM
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neighbor is an older woman, widow. asks me to help her out , she's afraid she's gonna get ripped off by always calling service people. she paid $375 to have expansion tank installed on hot water heater (wasn't covered in contract).
 
 

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