507276-03 Page 23 of 59Issue 1621
Intake Piping (Figures 27 through 28)
This gas furnace may be installed in either direct vent
or non-direct vent applications. In non-direct vent
applications, when intake air will be drawn into the furnace
from the surrounding space, the indoor air quality must be
considered and guidelines listed in Combustion, Dilution
and Ventilation Air section must be followed.
Follow the next two steps when installing the unit in Direct
Vent applications, where combustion air is taken from
outdoors and ue gases are discharged outdoors. The
provided air intake screen must not be used in direct
vent applications (outdoors).
Figure 28
Figure 27
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