11
c. Minimum size of Outdoor openings shall be the size re-
quired in
Outdoor Combustion Air
Method above multi-
plied by reduction
Factor
in b. above. The minimum di-
mension of air openings shall be not less than 3 in. (80 mm).
CONDENSATE TRAP
Condensate Trap -- Upflow Orientation
When the furnace is installed in the upflow position, it is not
necessary to relocate the condensate trap or associated tubing.
Refer to Fig. 8 for upflow condensate trap information. Refer to
Condensate Drain section for information how to install the
condensate drain.
A11307
Fig. 8 -- Upflow Trap Configuration
(Appearance may vary)
Condensate Trap -- Downflow Orientation.
When the furnace is installed in the downflow position, the
condensate trap will be initially located at the upper left corner of
the collector box, as received from the factory. See the top image
in Fig. 9.
When the furnace is installed in the downflow
orientation, the condensate trap must be relocated for proper
condensate drainage. See the bottom image in Fig. 9.
A11587
Fig. 9 -- Downflow Trap Configuration
(Appearance may vary)
A11573
Fig. 10 -- Horizontal Right Trap Configuration
(Appearance may vary)
A11574
Fig. 11 -- Horizontal Left Configuration
(Appearance may vary)