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Author Topic: Pro series 200 flapper clanging?  (Read 8127 times)

d-man

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Pro series 200 flapper clanging?
« on: March 18, 2014, 09:13:17 PM »

Hey guy, I bought a pro series 200 about a year and a half ago. Since I have first started using it I have had problems with the flapper on the back of the unit clanging when the blower is running. If I crack the door while it is happening it stop banging but as soon as I close it again it starts up again. I have called pro fab but can't seem to get a solution. I have changed the blower, cleaned it out many times, removed 2 lengths of chimney pipe, (still have 4 4' lengths on the unit) rearranged the brick patten as pro fab suggested and still nothing worked. Anyone else having a similar problem? I'm kind of at a loss for what to do next.
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Scott7m

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Re: Pro series 200 flapper clanging?
« Reply #1 on: March 18, 2014, 10:16:03 PM »

Provide the back of the stove with more available air, u can remove a seal around a door on one side or perhaps open up on of the line cut outs in the bottom your not using
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d-man

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Re: Pro series 200 flapper clanging?
« Reply #2 on: March 19, 2014, 03:10:16 AM »

I have tried running it with the rear door open and it still bangs. I ordered a new flapper from pro fab to see if that helps. The only other thing I can think of is that the stack being so high(16') the exhaust is cooling and not rising out of the chimney fast enough and backing up into the fire box. I am not sure if the chimney height is a issue but I know the exhaust temperature is low sometimes there are ice sickles on the chimney cap.
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slimjim

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Re: Pro series 200 flapper clanging?
« Reply #3 on: March 19, 2014, 06:41:01 AM »

Scott, not trying to but in here but it sure sounds to me that somewhere in the air flow there is some restriction that the blower has a hard time overcoming, I'm not a big fan of extended chimney but if it is necessary then perhaps a barometric damper would help to stabilize the draft, the icicles on the chimney cap are just condensation forming when the warm moist air mixes with the cold ambient air, I would remove the cap as it may be  causing a portion of the problem with air flow.
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Scott7m

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Re: Pro series 200 flapper clanging?
« Reply #4 on: March 19, 2014, 08:47:23 AM »

You ain't butting in slim

My thoughts were the same.  However in his initial post I assumed he meant when the backdoor opened it quit clanging, he obviously meant load doors.

Also to be honest I quickly read it and just assumed it wasn't getting enough air but the fact he still has 16th of stack never dawned on me, wow

Why so much stack??  U had 24 ft at one time?
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slimjim

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Re: Pro series 200 flapper clanging?
« Reply #5 on: March 19, 2014, 10:17:34 AM »

 I would not be a bit surprised that the whole issue would stop if most of the smoke pipe and chimney cap were to disappear, Scott do you have any local guys down there that could make a stainless barometric damper to put into the chimney tee?  Somebody should start a business manufacturing them for OWB's as they can help regulate the draft on all our stoves.
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d-man

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Re: Pro series 200 flapper clanging?
« Reply #6 on: March 19, 2014, 10:26:40 AM »

The town I live in treats outdoor furnaces like they are the biggest polluting, cancer causing thing imaginable. The code says the unit has to be within 15' of the residence it serves and the stack must be 2' higher then the ridge. So once I got my certificate of compliance i removed 2 sections of chimney to try and help with the problem. If i remove anymore the exhaust will blow into my eave soffit because it is so close to the house. I might be able to take one more off but that would still leave me with 3, 4ft sections.
« Last Edit: March 19, 2014, 10:31:16 AM by d-man »
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slimjim

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Re: Pro series 200 flapper clanging?
« Reply #7 on: March 19, 2014, 10:41:04 AM »

Do you have a tee in the pipe that a barometric damper could be installed into and can you remove the cap?
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d-man

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Re: Pro series 200 flapper clanging?
« Reply #8 on: March 19, 2014, 10:48:07 AM »

There is no "T" in the pipe. I could remove the cap.
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slimjim

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Re: Pro series 200 flapper clanging?
« Reply #9 on: March 19, 2014, 10:51:05 AM »

None at the back of the stove either? Sorry I'm not familiar with the stove, Can we install one at the bottom of the stack right as the stack comes out of the boiler?
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Scott7m

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Re: Pro series 200 flapper clanging?
« Reply #10 on: March 19, 2014, 10:57:32 AM »

The stack exits the top of the boiler, I think one could design something to make it work but I know no one that does it

I think the boiler would be fine if u could get exhaust Lowe

If the draft on that pro 200 was working correct you'd see very little in the way of exhaust smoke

This is a classic case of someone "your town" causing you to increase ur emissions due to the stove not working properly, what a joke...
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slimjim

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Re: Pro series 200 flapper clanging?
« Reply #11 on: March 19, 2014, 11:02:30 AM »

Scott, what size pipe is it and is it insulated, I can check with my supply house on pricing a tee and damper, the Barometric damper will not last more than a couple of years as it is cheap tin but if it works then I'm sure one of us could come up with a piece of stainless and make him one.
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d-man

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Re: Pro series 200 flapper clanging?
« Reply #12 on: March 19, 2014, 11:36:24 AM »

Its not just the town. I live in New York and anything they can't tax is a bad thing. Hard to tax firewood so lets just make it so no one can heat there house with it. I am going to take as much chimney down as I can and see how it works. Thanks guys for all the help. I will let you know how it goes. The pipe is 6" insulated.
« Last Edit: March 19, 2014, 11:38:33 AM by d-man »
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mlappin

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Re: Pro series 200 flapper clanging?
« Reply #13 on: March 19, 2014, 02:35:40 PM »

Hate it when my flapper clangs.

Maybe hard to believe but you can tax firewood. Local hay auction has started charging sales tax to people who buy firewood. The state has labeled firewood a fuel therefore its taxable. A**holes.

I think slim and scott are dead on with your problem. Exhaust has to cool a lot before getting out of that much stack, cool exhaust equals no natural draw.
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d-man

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Re: Pro series 200 flapper clanging?
« Reply #14 on: March 23, 2014, 10:25:41 AM »

Hey fellas. I took off another section of chimney pipe and it stop the flapper from banging. So i guess it was all about the draft. Is there something I can install so i can put the section of chimney back on and have the unit run right? The reason I ask is because the stack is now only about a foot above my soffit and I am worried about exhaust entering the house.
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