16
Vent Pipe
Use alternate vent
& combination
air locations
Combustion Air Pipe
Field Supplied
Drain Tee on Vent Pipe
Condensate trapped
to prevent flue gas from escaping
and routed to field supplied
condensate disposal
1/4” per foot min.
slope to furnace
6’ Max.
Floor
Basem
ent / C
rawlsp
ace
DOWN VENTING UPFLOW MODEL FURNACES ONLY
All piping and fittings must be joined per material manufacturers specifications
to prevent separation and flue gas leaks.
Figure 11
Insert flange. Cut 2 ½” long.
R 000142
F
Figure 9
C
U
T
H
ER
E
Figure 10
Vent/Flue Pipe Cuts
(Upflow / Horizontal models only)
When using the alternate venting location, either in a
horizontal left side down installation or a vertical installation
using down – venting, an alternate combustion air opening
can be used. A locating dimple is located on the right side of
the furnace cabinet. The locating dimple is 1 7/8” measured
from the front edge of the cabinet in line with the knock out.