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10-23-2012, 02:18 PM #1
Heat Seal II damper on water heater vent
This is on a water heater vent. I've never seen one before, but it appears to be similar to the Ameri-Therm that I have seen on boilers.
I'm going to recommend removal, but anyone have specific experience with these things?
Similar Threads:"There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
www.ArnoldHomeInspections.com
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10-23-2012, 06:35 PM #2
Re: Heat Seal II damper on water heater vent
Bimetalic stack damper. Old large (60-75 gal-ish) gas WH?
What else is venting up the stack?
Basement install? multi-level home? multi-dwelling multi-floor building?
Upon what basis are you "recommending removal"?
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10-24-2012, 05:34 AM #3
Re: Heat Seal II damper on water heater vent
It is on a 40 gallon gas WH. There is a gas-fired boiler also venting into the unlined brick chimney. Two story row house single family basement.
I am "recommending removal" because there is no interlock or spill switch. If the damper fails to open, the water heater continues to run.
Similar to the Ameri-Therm discussion: http://www.inspectionnews.net/home_i...nt-damper.html
"There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
www.ArnoldHomeInspections.com
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10-24-2012, 05:46 AM #4
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10-24-2012, 05:57 AM #5
Re: Heat Seal II damper on water heater vent
"There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
www.ArnoldHomeInspections.com
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10-24-2012, 06:53 AM #6
Re: Heat Seal II damper on water heater vent
It is on a 40 gallon gas WH. There is a gas-fired boiler also venting into the unlined brick chimney. Two story row house single family basement.
I am "recommending removal" because there is no interlock or spill switch. If the damper fails to open, the water heater continues to run.
You don't indicate, guess we are to assume a Cat I WH with a draft hood, spillage nightmare. You didn't indicate if the basement was tight (infiltration, enclosed space) with living space/conditioned either.
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10-24-2012, 07:02 AM #7
Re: Heat Seal II damper on water heater vent
"There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
www.ArnoldHomeInspections.com
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