INSTALLATION INSTRUCTIONS Gas Furnace: WFAR
440 01 7104 02 57
Specifications subject to change without notice.
3” (76 mm)
12” (305 mm)
Pipe hangar
Ventilated Combustion Air
intake termination in crawl
space
Ventilated Combustion
Air intake pipe
CRAWL SPACE
ATTIC
highest level of insulation
A10497
Figure 56 -- Vent Terminations for Ventilated Combustion Air
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