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Old 09-21-2011, 02:06 AM   #1
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gas dryer venting


is there any difference in venting an electric and gas dryer? i am changing to gas and was just gonna have a duct going about 4 ft vertical and then direct through the wall. just like i did for electrical.

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Old 09-21-2011, 06:26 AM   #2
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gas dryer venting


That is OK. Just replace with new rigid(smooth) metal pipe. None of that corrugated flex stuff, please.

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Old 11-14-2011, 02:55 PM   #3
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gas dryer venting


one more question: is there a clearance requirement for that pipe like there is 6" if i were venting a gas water heater? or can it get in touch with lumber, for example?

thanks
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Old 11-14-2011, 10:48 PM   #4
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gas dryer venting


Venting for the lint does not require the same clearances as venting for flue gases. So you should be fine.
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Old 11-15-2011, 01:52 AM   #5
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Venting for the lint does not require the same clearances as venting for flue gases. So you should be fine.
yeah but it's a gas dryer
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Old 11-15-2011, 07:20 AM   #6
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gas dryer venting


Gas or Electric don't matter their all thermostatically controlled. You are talking about apples and oranges here with the exhaust from a dryer compared to a heater.
Heater flue temperatures are much higher than a dryer exhaust. It's a different ballgame with heaters.
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Old 11-15-2011, 07:34 AM   #7
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or can it get in touch with lumber, for example?
the usual warning is:
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gas dryer venting-dryer-vent-combustable-warning-frigedere.jpg  
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Old 11-15-2011, 02:52 PM   #8
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gas dryer venting


I have a simular situation. I just had a 17 KW whole house generator installed and have to rearrange the vent for my gas dryer due to how the installer had to run the entrance cable to get to the transfer switch.

The original vent pipe was the corrugated metal type and I have noticed that it has about 1 to 1 1/2 inches of built up dryer lint inside the vent pipe. Bad idea in my book.

I am planning on using PVC schedule 80 4 inch piping instead when I run the new vent pipe. Reason I am doing this is I feel that the PVC will be slicker on the inside and less likely to hold onto lint. I of course will use a short piece of the corrugated stuff going from the dryer to attach to the pvc pipe. I can clean this out easily if need be. I think I can also put air pressure on the PVC piping and blow it out in the future, if I need to.

Does anyone have any comment for me on this project?

I will be getting someone to do this for me as I will have to go through my brick exterior wall and I am getting a little too old to tackle this even though I usually do all my work.

Tom

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Old 11-15-2011, 06:02 PM   #9
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I wouldn't install any thing else but 4" round galvanized pipe for a dryer vent. With the joints in the direction of flow and taped joints.
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Old 11-15-2011, 06:42 PM   #10
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Previously discussed here
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Old 11-15-2011, 09:38 PM   #11
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gas dryer venting


Mike, thanks for the hyperlink referral to previous post about 4 inch pvc as dryer vent piping. Very informative.

Tom
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Old 11-16-2011, 02:34 PM   #12
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The 2012 whole she-bang, click on "next section" after reading (1-5) and follow the links posted: http://publicecodes.citation.com/ico..._15_sec002.htm

Gary

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