321 Studios Oil Furnace FLR110D48E - Manual (Page 26)

Manual 2100-422
Page 24
FIGURE 14
APPLIANCES LOCATED IN CONFINED SPACES
ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC
MIS-1338
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.
MIS-1339