International comfort products N9MP1 Installation Instructions Manual page 26

Proper Sealing Procedure for
Figure 19
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
WARNING
!
FIRE HAZARD
Failure to do so could cause death, personal injury
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.
This furnace is approved for venting with Schedule 40 PVC,
CPVC, ABS, Cellular Core pipe fittings and SDR--26 PVC.
NOTE: All PVC, CPVC, ABS, and Cellular Core pipe fittings, sol-
vent cement, primers and procedures MUST conform to American
National Standard Institute and American Society for Testing and
Materials (ANSI/ASTM) standards.
·
Pipe and Fittings: PVC -- Ref ASTM D1785, D2241, D2466,
D2665 & D3311
ABS -- ASTM D2661, D1527 & F--628
Cellular Core -- F--891
·
PVC Primer and Solvent Cement -- Ref ASTM D2564
·
Procedure for Cementing Joints -- Ref ASTM D2855
·
Procedure for PVC to ABS transition -- Ref ASTM D3138
NOTE: In order to create a seal that allows future removal of pipe,
RTV sealant MUST be used on the inlet pipe where it joins to the
26
Vent Pipe
(Top Panel Exit)
Vent Fitting
& Clamps
Combustion
Blower
25--24--14a
furnace. PVC, CPVC, ABS, and Cellular Core pipe and cement
may be used on all other joints.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in death or
personal injury.
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 natu-
ral bristle brush or the dauber supplied with the cement. The prop-
er brush size is one inch.
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 al-
low primer to dry before applying cement.
3. Apply a thin coat of cement evenly in the socket. Quickly ap-
ply 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 ta-
pered 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 below 0°F), increase the minimum dis-
tance between vent pipe and air intake from 8² to 18².
WARNING
!
CARBON MONOXIDE POISONING HAZARD.
Failure to properly vent this furnace could result
in death or personal injury.
Maintain a minimum of 36² 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 proce-
dures for Joining Pipe and Fittings and maintain spacing
between vent and combustion air piping as indicated in
Figure 20 through Figure 28 .
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