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04-11-2008, 01:30 PM
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Member
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Join Date: Mar 2007
Location: Baton Rouge, La.
Posts: 20
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Flue clearance
Does a water heater flue pipe require the same 3-2-10 rule same as firplaces. For the life of me I cant find my reference.
Jim
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04-11-2008, 01:59 PM
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Join Date: Mar 2007
Location: Southborough, MA
Posts: 912
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Re: Flue clearance
Do not have code but if closer than 8 feet to wall vent must extend 2 feet above roof.
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Dave
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04-11-2008, 01:59 PM
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Join Date: Mar 2007
Location: Spring City/Surrounding Philadelphia area
Posts: 701
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Re: Flue clearance
Jim, I'm not sure about that. But how close is that flue pipe to the adjacent roof surface? Is that type-B vent or single walled?
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04-11-2008, 02:10 PM
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Member
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Join Date: Mar 2007
Location: Baton Rouge, La.
Posts: 20
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Re: Flue clearance
That's single walled pipe. The pipe is almost touching the wood fascia. I have the one inch clearance from the roof sheathing but I dontThink I have one inch from the fascia. I'm also concerned about drafting properly.
Jim
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04-11-2008, 02:16 PM
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Join Date: Mar 2007
Location: Southborough, MA
Posts: 912
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Re: Flue clearance
NFPA 54 12.7.2. Gas Vent Terminations.
A.........
B Gas vents that are over 12 inches in size or are located less than 8 ft. from a vertical wall or similar obstruction shall terminate not less than 2 ft. above the highest point where they pass through the roof and not less than 2 ft. above any portion of a building within 10 ft horizontally.
__________________
Dave
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04-11-2008, 02:24 PM
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Member
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Join Date: Mar 2007
Location: Baton Rouge, La.
Posts: 20
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Re: Flue clearance
Thanks david,
This site Rocks when I need it.
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04-11-2008, 02:29 PM
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Member
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Join Date: Aug 2007
Location: Memphis TN.
Posts: 1,394
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Re: Flue clearance
Originally Posted by James Bohac
That's single walled pipe. The pipe is almost touching the wood fascia. I have the one inch clearance from the roof sheathing but I dontThink I have one inch from the fascia. I'm also concerned about drafting properly.
Jim
Single Walled pipe clearance is 6 inches. B vent is 1 inch clearance from combustibles.
Originally Posted by David Banks
NFPA 54 12.7.2. Gas Vent Terminations.
A.........
B Gas vents that are over 12 inches in size or are located less than 8 ft. from a vertical wall or similar obstruction shall terminate not less than 2 ft. above the highest point where they pass through the roof and not less than 2 ft. above any portion of a building within 10 ft horizontally.
Also IRC. 2003 M1804.2.6
__________________
It Might have Choked Artie But it ain't gone'a choke Stymie!
Billy J. Stephens HI Service
Memphis TN.
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04-11-2008, 02:30 PM
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Member
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Join Date: Mar 2007
Location: Southborough, MA
Posts: 912
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Re: Flue clearance
Originally Posted by James Bohac
That's single walled pipe. The pipe is almost touching the wood fascia. I have the one inch clearance from the roof sheathing but I dontThink I have one inch from the fascia. I'm also concerned about drafting properly.
Jim
That single wall should not be going through the attic. Needs to be type B or L.
__________________
Dave
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04-11-2008, 03:00 PM
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Member
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Join Date: Mar 2007
Location: Baton Rouge, La.
Posts: 20
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Re: Flue clearance
My bad, That is a type B flue, however it is less than 12 inches in diameter. Does the same clearance from horizontal objects apply?
Jim
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04-11-2008, 03:06 PM
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Member
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Join Date: Aug 2007
Location: Memphis TN.
Posts: 1,394
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Re: Flue clearance
Originally Posted by James Bohac
My bad, That is a type B flue, however it is less than 12 inches in diameter. Does the same clearance from horizontal objects apply?
Jim
Yes..
__________________
It Might have Choked Artie But it ain't gone'a choke Stymie!
Billy J. Stephens HI Service
Memphis TN.
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