507404-02Page 24 of 80 Issue 1448
1. Use transition solvent cement or a sheet metal screw
to secure the intake pipe to the inlet air connector.
2. Route piping to outside of structure. Continue with
installation following instructions given in general guide
lines for piping terminations and in intake and exhaust
piping terminations for direct vent sections. Refer to
Table 5 for pipe sizes.
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
Typical Air Intake Pipe Connections
Horizontal Non-Direct Vent Applications
(Horizontal Right-Hand Air Discharge Application Shown)
NOTE: Debris screen may be positioned straight out (preferred) or
with an elbow rotated to face down.
Figure 27
Typical Air Intake Pipe Connections
Upow Non-Direct Vent Applications
NOTE: Debris screen and elbow may be rotated, so that screen
may be positioned to face forward or to either side.
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