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Proper Sealing Procedure for
Figure 21
Combustion Blower
Rubber Coupling
& Clamps
NOTE: The 90° elbow is approved
Vent Pipe
for use inside the furnace ONLY.
90° Elbow
Vent Extension
Pipe (Side Panel
Exit)
SIDE VIEW
Rotate downward
Tee
5° to 10°
NOTE: Built--in channel will be angled 5° to 10° also.
Joining Pipe and Fittings
SEE VENT AND COMBUSTION AIR PIPING,
Combustion Air Piping Guidelines in this manual for applicable
ASTM Standards for vent materials.
WARNING
!
FIRE HAZARD.
Failure to follow this warning could result in
personal injury, death and/or property damage.
Observe all cautions and warnings printed on
material containers
Provide adequate ventilation and do NOT assemble
near heat source or open flame. Do NOT smoke
while using solvent cements and avoid contact with
skin or eyes.
WARNING
!
CARBON MONOXIDE POISONING HAZARD.
Failure to follow this warning could result in
personal injury or death.
Do NOT use solvent cement that has become
curdled, lumpy or thickened and do NOT thin.
Observe precautions printed on containers. For
applications below 32° F., use only low temperature
type solvent cement. Poor joints may lead to
disconnected or leaking vent pipe joints allowing
carbon monoxide to enter the living space.
1.
Cut pipe end square, remove ragged edges and burrs.
Chamfer end of pipe, then clean fitting, socket and pipe joint
of all dirt, grease, or moisture.
NOTE: Stir the solvent cement frequently while using. Use a
natural bristle brush or the dauber supplied with the cement. The
proper brush size is one inch.
28
Vent Pipe
(Top Panel Exit)
Vent Fitting
& Clamps
Combustion
Blower
25--24--14a
Vent and
Specifications are subject to change without notice
2.
After checking pipe and socket for proper fit, wipe socket
and pipe with cleaner-primer. Apply a liberal coat of primer
to inside surface of socket and outside of pipe. Do NOT
allow primer to dry before applying cement.
3.
Apply a thin coat of cement evenly in the socket. Quickly
apply a heavy coat of cement to the pipe end and insert pipe
into fittings with a slight twisting movement until it bottoms
out.
NOTE: Cement MUST be fluid while inserting pipe. If NOT, recoat
pipe.
4.
Hold the pipe in the fitting for 30 seconds to prevent the
tapered socket from pushing the pipe out of the fitting.
5.
Wipe all excess cement from the joint with a rag. Allow 15
minutes before handling. Cure time varies according to fit,
temperature and humidity.
Connecting Vent Pipes and Termination
NOTE: Combustion air intake and vent MUST terminate in the
same atmospheric pressure zone. If installation is in a cold climate
(sustained temperatures 0°F (--18°C) and below for 24 or more
consecutive hours), increase the minimum distance between vent
pipe and air intake from 8" to 18".
WARNING
!
CARBON MONOXIDE POISONING HAZARD.
Failure to follow this warning could result in
personal injury or death.
Maintain a minimum of 36" between combustion
air inlet and clothes dryer vent. Terminate the
combustion air intake as far as possible from any
air conditioner, heat pump, swimming pool,
swimming pool pumping, chlorinator or filtration
unit.
1.
Install all couplings, nipples and elbows using proper
procedures for Joining Pipe and Fittings and maintain
spacing between vent and combustion air piping as
indicated in Figure 22 through Figure 30 .
Sidewall Termination 12"or More Above
Figure 22
Snow Level or Grade Level
8" *
MIN.
20'
MAX
EXHAUST
INLET
12 "
MIN.
GRADE LEVEL
OR
SNOW LEVEL
Horizontal Termination
1
1.
Cut two holes. 2
/
" for 2" pipe, 3" for 2
2
3" pipe. Do NOT make the holes oversized, or it will be
necessary to add a sheet metal or plywood plate on the
outside with the correct size hole in it.
2.
Check hole sizes by making sure it is smaller than the
couplings or elbows that will be installed on the outside. The
couplings or elbows MUST prevent the pipe from being
pushed back through the wall.
*18" Minimum for cold climates
[sustained temperatures 0° F
(- 18° C) and below for 24 or
more consecutive hours]
8"
MIN.
25--00--05F
1
1
/
" pipe, or 3
/
" for
2
2
440 01 1024 01
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