Page 24
When horizontally vented, minimum clearance for ter-
mination from electric meters, gas meters, regulators
and relief equipment is 4 ft. (1.2m) for US installa-
tions. 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 (pro-
longed exposure to exhaust condensate can destroy
protective coatings). It is recommended that the ex-
haust outlet not be located within 6 feet (1.8m) of a
condensing unit because the condensate can dam-
age 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.
FIGURE 32
Inches (mm)
FRONT VIEW
WALL TERMINATION
(22G44) LB−49107CD for 2(51) Venting
(44J40) LB−65701A for 3(76) Venting
3 (76) OR
2 (51) 90 ELBOW
1/2 (13)
FOAM
INSULATION
Inches(mm)
3 (76) OR
2 (51) 90 ELBOW
3 x 2 (76 x 51) OR
2 x 1−1/2 (51 x 38)
REDUCER BUSHING LOCA-
TION
FOR OFFSET TERMINATION
Optional Turn-
down
(Not Shown)
May Be Used on
Intake Only
FIGURE 33
METAL OR PLASTIC
STRAP-
PING
OR LARGE
WIRE TIES
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 horizon-
tally, as shown in figure 35.
FIGURE 34
12
(305)
5
(127)
1/2 (13) Foam
Insulation in
Unconditioned Space
EXHAUST VENT
INTAKE VENT
OUTSIDE WALL
EXHAUST VENT
INTAKE
VENT
Front View
Side View
VENT TERMINATIONS
WALL TERMINATION KIT (30G28) WTK
Inches (mm)
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