Dunkirk XEB-4 - Ventilation and Combustion Air; Combustion Air Requirements; Air Infiltration Table

FIG. 3A - FRESH AIR DUCT CAPACITIES (Btuh)
FIG. 3B - FRESH AIR DUCT CAPACITIES (Btuh)
FIG. 4 - FRESH AIR DUCT CAPACITIES (Btuh)
)UHH )UHH )UHH
$UHD $UHD $UHD
)UHVK$LU :LUH 0HWDO :RRG
'XFW6L]H 0HVK /RXYHUV /RXYHUV
[   
[   
[   
[   
6TXDUH,QFKSHU%WXK
)UHH )UHH )UHH
$UHD $UHD $UHD
)UHVK$LU :LUH 0HWDO :RRG
'XFW6L]H 0HVK /RXYHUV /RXYHUV
[   
[   
[   
[   
6TXDUH,QFKSHU%WXK
)UHH )UHH )UHH
$UHD $UHD $UHD
)UHVK$LU :LUH 0HWDO :RRG
'XFW6L]H 0HVK /RXYHUV /RXYHUV
[   
[   
[   
[   
6TXDUH,QFKSHU%WXK
2. One permanent opening commencing with 12
inches of the top of the enclosure, shall be
permitted where the equipment has clearance
of at least 1 inch from the sides and back and
6 inches form the front of the appliance. The
opening shell directly communicate with the
outdoors or shall communicate through a vertical
or horizontal duct to the outdoors or spaces
(crawl or attic) that freely communicate with
the out doors, and shall have a minimum free
area of:
a) 1 sq. inch per 3000 Btu per hour of the total
input of all equipment located in the enclosure
(See Fig. 4), and the front of the appliance
b) Not less than the sum of the areas of all
vent connectors in the confined space.
5