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VENTILATION AIR FOR COMBUSTION AND
VENTILATION FROM INSIDE BUILDING
This fresh air would come from an adjoining unconfined space. When venting 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 7). You can also remove door
into adjoining room (see Option 3, Figure 7).
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
BTU’s per hour of
the total input ratings of all gas utilization equipment in the confined space, but not less than 100
square inches.
Figure 7 Ventilation Air From Inside Building
NOTE: This heater shall not be installed in a room or space unless the required volume of indoor
combustion air is provided by the method in the National Fuel Gas Code, ANSIZ223.1/NFPA 54, the
International Fuel Gas Code, or applicable codes.
Содержание FP-327-ZC
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