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Spill switch tripping, water dripping at vent pipe seam, steam, humid
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JohnRL
Member Posts: 6
in Gas Heating
I have a Weil Mclain gas boiler, a little over 18 years old.
The spill switch trips 15 minutes to a half hour after starts up. There's water dripping at one of the seams in the vent pipe that goes from the draft hood to the chimney. Last night, after it had been running for awhile, I notice steam coming out of the vent hood of the water heater. The basement has been feeling warmer and humid lately too.
I attached a picture so you can see the configuration. I put a piece of foil over the damper motor because the water was dripping on it.
What might the problem be?
Thanks
The spill switch trips 15 minutes to a half hour after starts up. There's water dripping at one of the seams in the vent pipe that goes from the draft hood to the chimney. Last night, after it had been running for awhile, I notice steam coming out of the vent hood of the water heater. The basement has been feeling warmer and humid lately too.
I attached a picture so you can see the configuration. I put a piece of foil over the damper motor because the water was dripping on it.
What might the problem be?
Thanks
0
Comments
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Check that chimney, sooner rather than later. Something may be blocking, or partially blocking the draught. It may be as simple as ice having formed in the chimney (yeah, it can happen) or something more drastic.
Have there been any changes in the operating temperatures of the boiler?Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England1 -
No changes in the temperature as far as I know.
I had a feeling it might be a chimney blockage. I was hoping I was wrong.0 -
I do hope you have carbon monoxide detector alarms throughout your home. This is SERIOUS, and as noted, needs IMMEDIATE attention, if not sooner...
MEIt's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.1 -
I'm trying to get someone here now0
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Does it trip when the burner is running or after shuts down. in the picture the damper is shut.0
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It trips while it's running. It was off in the picture0
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Please let us know what they find.
There's of course the opposite possibly, that the boiler and drafthood can't get enough makeup air from the outside. Same result, different cause.
Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment1 -
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Yeah, I figured that about the heat and humidity. I have a chimney guy coming at 8:00 tomorrow morning. Tonight we're making do with a couple of space heaters0
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Remember that the water heater is just as much of a CO threat as the boiler!!.......you obviously have a partially plugged chimney which it shares.0
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Could be a cold chimney. Saw a case like this that the chimney came through roof down by the spouting. When hot really cold could not draft properly.
I also agree with the. Combustion air problem. Can you open a basement window and see if problem goes away. One cycle should determine this.0 -
If it worked before, and does not now there is issues. Most likely in the flue.0
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