Section G2407 - 2006 IRC

[globe trekker]

I have an HVAC unit installed in a Hall closet in a new residence. Presently, the

combustion air is is proposed to be taken from the attic spaces by the means of

2 separate ( communicating air ) 6" round ducts. 1 is within 12" from the closet

ceiling and the other about 18" or so from the bottom of the closet flooring.

These ducts terminate in the attic space.

QUESTION: Can the required combustion air from the attic be used as to

supply this appliance? ( RE: G2407.6.1 ). The attic has eave vents and a

ridge venting system installed.

Thanks ya'll!

.

 

[mtlogcabin]

yes see but be carfeull with blown in insulation getting into the vent opening

FIGURE G2407.6.1(2) [304.6.1(2)]

ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC

(see Section G2407.6.1)

 

[Gregg Harris]

Yes but it should be 12 from top and 12 from bottom.

1 square inch per 4000 btu required

 

[globe trekker]

Thank you both for your quick responses! I looked and looked for that particular

Figure " mtlogcabin ", but could not find it.

.

 

[steveray]

Here is a linkto a handout from one of our continuing ed classes on IRC ventilation and such.....

http://www.ct.gov/dcs/lib/dcs/office_of_education_and_data_management_files/fa11_res._code_req._for_ventilation_and_exhaust.pdf

And while I am at it, here is a link to their home page which has a few years of stuff.....

http://www.ct.gov/dcs/cwp/view.asp?a=2147&q=422524