Lennox G32V Series Service Literature page 42

the Natural Gas and Propane Installation Instructions in
Canada for details. The termination should be at least
12" (305mm) from any opening through which flue
products could enter the building.
When horizontally vented, minimum clearance for ter-
mination from electric meters, gas meters, regulators
and relief equipment is 4 ft. (1.2m) for US installations.
Refer to the current CAN/CGA−B149.1 and .2 for
installations in Canada or with authorities having local
jurisdiction.
At vent termination, care must be taken to maintain
protective coatings over building materials (prolonged
exposure to exhaust condensate can destroy protec-
tive coatings). It is recommended that the exhaust out-
let not be located within 6 feet (1.8m) of a condensing
unit because the condensate can damage the painted
coating.
IMPORTANT
Combustion air intake inlet and exhaust outlet
should not be located within 6 ft. (1.8m) of dryer vent
or combustion air inlet or outlet of another ap-
pliance. Piping should not exit less than 3 ft. (.91m)
from opening into another building.
Inches(mm)
1/2 (13)
FOAM
INSULATION
3 (76) OR
2 (51) 90_ ELBOW
Optional Turn-
down
(Not Shown)
May Be Used on
FRONT VIEW
Intake Only
WALL TERMINATION
(22G44) LB−49107CD for 2(51) Venting
(44J40) LB−65701A for 3(76) Venting
FIGURE 40
METAL OR PLASTIC
STRAPPING
OR LARGE
WIRE TIES
FIGURE 41
3 x 2 (76 x 51) OR
2 x 1−1/2 (51 x 38)
REDUCER BUSHING LOCATION
FOR OFFSET TERMINATION
3 (76) OR
2 (51) 90_ ELBOW
Inches
(mm)
10− Suspend piping using hangers at a minimum of every 5
feet (1.52m) for schedule 40 PVC and every 3 feet
(.91m) for ABS−DWV, PVC−DWV, SPR−21 PVC, and
SDR−26 PVC piping. A suitable hanger can be fabri-
cated by using metal or plastic strapping or a large wire
tie.
11− In areas where piping penetrates joists or interior
walls, hole must be large enough to allow clearance on
all sides of pipe through center of hole using a hanger.
12− Isolate piping at the point where it exits the outside wall
or roof.
13− When furnace is installed in a residence where unit is
shut down for an extended period of time, such as a
vacation home, make provisions for draining conden-
sate collection trap and lines.
14− Based on the recommendation of the manufacturer, a
multiple furnace installation may use a group of up to four
termination kits WTK assembled together horizontally,
as shown in figure 43.
Front View
INTAKE
VENT
1/2 (13) Foam
Insulation in
Unconditioned Space
Inches (mm)
VENT TERMINATIONS
WALL TERMINATION KIT (30G28) WTK
Page 42
12 EXHAUST VENT
(305)
5
(127)
Side View
EXHAUST VENT
INTAKE VENT
OUTSIDE WALL
FIGURE 42