Bryant 66120 Installation, Start-Up, Operating And Service And Maintenance Instructions page 56

Avoid short horizontal offsets with 90
deg. Elbows. Short offsets can be
difficult to slope and may trap con-
densate.
Fig. 43 - - Combustion Air and Vent Pipe Diameter Transition Location and Elbow Configuration
Notes:
For this illustration, Wall A is the wall adjacent to the wall the
vent termination is located. Wall B is the wall the vent
termination is located.
The termination can be located on either wall.
Minimum distance of a vent terminal to an inside corner is
3 ft. (1 M).
Maximum distance from an inside corner is 6 ft. (2 M).
If the vent termination is located more than 6 ft. (2 M) away
from an inside corner, refer to the appropriate Direct or
Non−Direct Vent Clearance Tables.
Use 45 deg. Elbows where
possible, to ensure conden-
sate drainage.
Fig. 42 - - Near Furnace Vent Connections
NOT IN
HORIZONTAL
SECTION
No operable windows, doors or
Clearance distances for
intakes of any type within the
items greater than 3 feet
shaded areas of Wall A and B.
(1 meter ) away from the
inside corner, refer to the
For all other items, refer to the Inside
Inside Corner Clearance
Corner Clearance Table.
Table.
Fig. 44 - - Inside Corner Termination
FURNACE
PIPE DIAMETER
TRANSITION IN
VERTICAL SECTION
3 ft. (1 M)
3 ft. (1 M) to
6 ft. (2 M)
V
56
Slope vent pipe back to the
furnace at least ¼" per foot
Vent
Termination
A14546
A93034
A170005