Venting Installation - Kenmore 153.331350 Use & Care Manual

E. Application of solvent cement
• Apply solvent cement evenly and quickly
around outside of pipe at a width a little
greater than the depth of the fitting socket.
• Apply a light coat of cement evenly around
the inside of the fitting socket. Avoid puddling.
• Apply a second coat of cement to the pipe
end.
Fire Hazard
• Cans of cement and primer should
be closed at all times when not in
use to prevent evaporation of
chemicals and hardening of cement.
• They are also very flammable and
should be kept away from heat or
flame.
J
Figure 27
F. Joint assembly
Working quickly, insert the pipe into the fitting
socket bottom and give the pipe or fitting a
1/4 turn to evenly distribute the cement. Do
not continue to rotate the pipe after it has hit
the bottom of the fitting socket. A good joint
will have sufficient cement to make a bead all
the way around the outside of the fitting hub.
The fitting will have a tendency to slide back
while the cement is still wet so hold the joint
together for about 15 seconds.
Figure 28
G,
Cleanup and joint movement
Remove all excess cement from around the
pipe and fitting with a dry cotton rag. This
must be done while the cement is still soft.
The joint should not be disturbed immediately
after the cementing procedure, and sufficient
time should be allowed for proper curing
of the joint. Exact drying time is difficult to
predict because it depends on variables
such as temperature, humidity and cement
integrity. For more specific information,
you should contact your solvent cement
manufacturer.
Figure 29
Venting Installation
1. Plan the venting layout starting at the vent
termination and work back toward the heater.
Take into consideration the style and position
of the vent termination, the vent pipe routing,
elbows and connectors required and the
necessary support hangers.
2. Venting should be as direct as possible with
the fewest number of fittings. Use long radius
45 degree and long radius 90 degree elbows
wherever possible.
3. Avoid using 90 degree elbows "back to back"
and do not use street elbows. Maintain a
minimum 6" (150ram) straight section between
elbows. Closely coupled and short radius
elbows reduce the venting capacity. Figure 20
shows examples of vent pipe connections.
4. DO NOT USE AN ELBOW AS A SUPPORT
POINT. Elbows are not designed to carry the
weight of the venting system.
5. Calculate "Equivalent Vent Length" before
starting. Do not exceed the values shown
in Table 1. An example of how this length is
determined is shown in Figure 24. The value
from your calculations should also be used to
determine which rodent screen to install into the
vent termination elbow.
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