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Venting a gas hot water heater searay45 01-15-2007
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Posted by on January 15, 2007, 7:26 pm
I just had a new furnace installed, it is a direct vent so all I have
is my 40k btu 50 gal gas hot water heater to vent. I was wondering if
I could use 4" B-vent out of my heater and up threw my roof. It would
be about 12' total.


Posted by danger@heat.com on January 15, 2007, 11:38 pm
There is absolutely no problem venting it that way. As long as the Bvent is
interior and not exterior and it does not exceed 6" diameter and your single
appliance exceeds 30,000 btu's there is no problem. You must ensure there is
no spillage or downdraft.


-Canadian Heat



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Posted by on January 16, 2007, 12:21 am
DANgER wrote:

>There is absolutely no problem venting it that way. As long as the Bvent is
>interior and not exterior
>

huh?? the b-vent usually starts near the appliance on the interior,
then penetrates the roof to the exterior!

what dou YOU run on the exterior, single wall?


Posted by danger@heat.com on January 16, 2007, 1:56 pm
By interior I mean bvent that is heated by the house, usually runs down the
middle. Exterior is run on the outside of the house, cold.

And I call single wall venting, CVENT.

If you have a chimney liner, I would say you need to size it properly, but
bvent is fine.

-Canadian Heat


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Posted by Bubba on January 16, 2007, 5:11 pm
On 16 Jan 2007 04:38:57 GMT, DANgER (danger@heat.com) wrote:

>There is absolutely no problem venting it that way. As long as the Bvent is
>interior and not exterior and it does not exceed 6" diameter and your single
>appliance exceeds 30,000 btu's there is no problem. You must ensure there is
>no spillage or downdraft.
>
>
>-Canadian Heat

Kinda running for "tard" of the year award?
6" on a 40,000 btu water heater?
Wow! The mind wobbles...........
Bubba

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