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Old 12-17-2009, 09:30 AM   #1
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Heater damper slam?


I have a Dayton gas heater and after a heating cycle there is a loud slam like a damper shutting. It's a bit creepy when it happens in the middle of the night!

How do I fix this?

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Old 12-17-2009, 02:04 PM   #2
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Heater damper slam?


If it is a damper slamming you may need a
http://en.wikipedia.org/wiki/Dashpot

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Old 12-17-2009, 02:45 PM   #3
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Heater damper slam?


Post pics of your unit.
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Old 12-17-2009, 03:39 PM   #4
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Heater damper slam?


Quote:
Originally Posted by beenthere View Post
Post pics of your unit.

This is a family environment. I don't think that would be appropriate...



Oh - the Dayton! Well, there's not much to see in such a tight closet. I looks like every other heater.

Incidentally, there are 2 ducts/vents leading to the roof that don't do anything but let in hot/cold air. I think they were for a previous unit. Can I block those off?
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Old 12-17-2009, 03:42 PM   #5
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Heater damper slam?


Don't know. Can't tell by the pics if it needs those pipes or not.


ooops, my mistake, you didn't post any pics of it.
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Old 12-17-2009, 03:52 PM   #6
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Quote:
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This is a family environment. I don't think that would be appropriate...

Oh - the Dayton! Well, there's not much to see in such a tight closet. I looks like every other heater.
Check the alcohol content of your egg nog.
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Old 12-18-2009, 09:23 AM   #7
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Heater damper slam?


They are just 8x18" or so HVAC vents that go up to soffit vents on the roof. They are not connected to anything. My friend thought they were left open to vent the fumes out, but that doesn't really make sense.

No egg nog yet this year, and I don't drink. I see colors sometimes, and the voices tell me that's okay. The heater slam scares them, though.

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Old 12-18-2009, 09:35 AM   #8
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Heater damper slam?


Those ducts in the attic could be combustion air and should not be shut. They provide air for the furnace to burn.

Pics of what you have would help.
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Old 12-18-2009, 11:04 AM   #9
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Heater damper slam?


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Those ducts in the attic could be combustion air and should not be shut. They provide air for the furnace to burn.

Pics of what you have would help.

That doesn't make any sense either. Flat roof, single-story, no attic. The furnace is fan-fed from air vents underneath. The exhaust vents out the top, of course, through a stovepipe. This doubles as an a/c unit, and like I said these vents only let cold air in in the winter and hot air in the summer.

I'll take some pics when I get home...if my wife hasn't "hidden" the camera again.
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Old 12-18-2009, 11:48 AM   #10
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Heater damper slam?


Those are combustion air intake opening. They provide the air for the burner to operate.

The duct under your furnace are return air ducts for the house. That allow the air in the house to be heated or cooled and blown back into the house.
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Old 12-18-2009, 01:04 PM   #11
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Quote:
Originally Posted by beenthere View Post
Those are combustion air intake opening. They provide the air for the burner to operate.
Yes, you don't want the furnace sucking air out of your home to burn. That can excacerbate the voices and colors and potentially lead to flat line syndrome.
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Old 12-20-2009, 08:48 PM   #12
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Heater damper slam?


Still haven't found the darn camera and my cellphone won't take very good pictures of the closet. The burners are, in fact, fed by a fan that blows filtered air into the burners from underneath where the return vents are. The unit is pretty much sealed around where the ducts are, aside from little register holes in the cover. One of the ducts is just a hole for the a/c piping the exit through.

The unit is actually a Unitary Products Group model G2FD048S21A. Also known as Coleman, Eschelon, Trane, Dayton, York International...

I'll leave the vents alone, but how do I fix the slammer?
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Old 12-20-2009, 10:26 PM   #13
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Heater damper slam?


Thats an A/C coil model number, not a furnace model number.

The furnace model number is inside near the burner.
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Old 12-22-2009, 09:32 AM   #14
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Heater damper slam?


I guess I'll turn contortionist and take it all apart...

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