Page 13
At vent termination, care must be taken to maintain
protective coatings over building materials (proĆ
longed exposure to exhaust condensate can destroy
protective coatings). It is recommended that the exĆ
haust outlet not be located within 6 feet (1.8 m) of a
condensing unit because the condensate can damĆ
age the painted coating.
IMPORTANT
Combustion air intake inlet and exhaust outlet
should not be located within 6 feet (1.8 m) of dryer
vent or combustion air inlet or outlet of another apĆ
pliance. Piping should not exit less than 3 feet (.91 m)
from opening into another building.
IMPORTANT
For Canadian Installations Only:
In accordance to CAN/CGA-B149.1 and .2, the miniĆ
mum allowed distance between the combustion air
intake inlet and the exhaust outlet of other apĆ
pliances shall not be less than 12 inches (305 mm).
10 - Suspend piping using hangers at a minimum of every
5 feet (1.52 m) for schedule 40 PVC and every 3 feet
(.91 m) for ABS-DWV, PVC-DWV, SDR-21 PVC,
and SDRĆ26 PVC piping. A suitable hanger can be
fabricated 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 as it passes through the center of
the hole.
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 conĆ
densate 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 17.
FIGURE 14
METAL OR PLASTIC
STRAPPING
OR LARGE
WIRE TIES
FIGURE 15
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 LOCAĆ
TION
FOR OFFSET TERMINATION
Optional Turndown
(Not Shown)
May Be Used on
Intake Only
FIGURE 16
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)
