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Manual 2100-422M
Page 29 of 42
FIGURE 14
APPLIANCES LOCATED IN CONFINED SPACES
ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC
NOTE: The inlet and outlet air openings shall
each have a free area of not less than
one square inch per 4,000 BTU per hour
(35 square inches per gallon per hour)
of the total input rating of all
appliances in the enclosure.
FIGURE 15
APPLIANCES LOCATED IN CONFINED SPACES
ALL AIR FROM OUTDOORS
INLET AIR FROM VENTILATED CRAWL SPACE AND OUTLET AIR TO VENTILATED ATTIC
NOTE: The inlet and outlet air openings shall
each have a free area of not less than
one square inch per 4,000 BTU per hour
(35 square inches per gallon per hour)
of the total input rating of appliances in
the enclosure.