54
Venting
air openings and minimum round duct diameter for horizontal
ducting only.
METHOD 2:
One permanent opening located within 12 inches of the top of
the enclosure, shall be permitted where the equipment has
clearances of at least 1 inch from the sides and back and 6
inches from the front of the appliance. The opening shall di-
rectly communicate with the outdoors or communicate
through a vertical or horizontal duct to the outdoors or spaces
NON-DIRECT VENT (cont.)
GENERAL VENTING REQUIREMENTS AND
GUIDELINES
FIGURE 14
NON-DIRECT VENT
AIR FROM ATTIC OR CRAWL
SPACE
OPTIONAL INLET AIR 1 SQ. IN.
(6.5 SQ. CM.) PER 4000 BTUH
ST-A1194-19
FIG D
FIGURE 16
COMBUSTION AIR
FITTING
OPTION 1
OPTION 2
THIS CONFIGURATION TO BE USED
ONLY WITH THE DOWN FLOW ZERO
CLEARANCE KIT (RXGY-ZK)
OPTION 1
OPTION 2
THIS CONFIGURATION TO BE USED
ONLY WITH THE DOWN FLOW ZERO
CLEARANCE KIT (RXGY-ZK)
ST-A1194-03-XO
FIGURE 15
NON-DIRECT VENT
OUTSIDE AIR USING A
HORIZONTAL DUCT
OUTLET AIR 1 SQ. IN.
(6.5 SQ. CM.) PER 2000 BTUH
INLET AIR 1 SQ. IN.
(6.5 SQ. CM.) PER 2000 BTUH
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