Owner`s manual

Page 38
AIR FOR COMBUSTION AND
VENTILATION INSIDE BUILDING
This fresh combustion and ventilation air would come from an adjoining unconfined space.
When ventilating to an adjoining space, you must provide two permanent openings: one
within 12" of the ceiling and one within 12" of the floor on the
wall connecting the two spaces (See options 1 and 2, Figure 9). You can
also remove door into adjoining room (See option 3, Figure 9).
WARNING
REWORK WORKSHEET, ADDING THE SPACE OF THE ADJOINING UNCONFINED
SPACE. THE COMBINED SPACES MUST HAVE ADEQUATE AMOUNT OF AIR
TO SUPPLY ALL APPLIANCES IN BOTH SPACES.
NOTE: Each opening shall have a minimum free area of 1 square inch per 1000 BTUs per
hour of the total input rating of all gas utilization equipment in the confined space, but
not less than 100 square inch.
Figure 9