Instructions For Working With Cementing Pvc/ Cpvc Pipe Connections - Slant/Fin VGH-299-CH Installation And Service Manual

Insulation may not be used on PVC or CPVC venting materials. The use of insulation will
cause increased vent wall temperatures, which could result in vent pipe failure.
The PVC/ CPVC pipe and fittings must be cemented using an "All Purpose Cement" suitable
for PVC and CPVC pipe. Use only the vent materials, primer and cement specified in this
manual to make the vent connections. Failure to follow this warning could result in fire,
personal injury, or death.
In Canada, CPVC and PVC vent pipe, fittings and cement/ primer must be ULC-S636 certified.
Use only cleaners, primers, and solvents that are approved for the materials which are joined
together.
NOTICE
All PVC vent pipes must be glued, properly supported, and the exhaust must be pitched a
minimum of a 1/4 inch per foot back to the boiler (to allow drainage of condensate).
9.3.1 I
NSTRUCTIONS FOR WORKING WITH CEMENTING
1. Work from the boiler to vent or air termination. Do not exceed the lengths given in this manual for the air or vent
piping.
2. Cut pipe to the required lengths and deburr the inside and outside of the pipe ends.
3. Chamfer outside of each pipe end to ensure even cement distribution when joining.
4. Clean all pipe ends and fittings using a clean dry rag. (Moisture will retard curing and dirt or grease will prevent
adhesion.)
5. Dry fit vent or air piping to ensure proper fi t up before assembling any joint. The pipe must go a third to two-
thirds into the fitting to ensure proper sealing after cement is applied.
6. Priming and Cementing:
a. Handle fittings and pipes carefully to prevent contamination of surfaces.
b. Apply a liberal even coat of primer to the fitting socket and to the pipe end to approximately 1/2" beyond
the socket depth.
c. Apply a second primer coat to the fitting socket.
d. While primer is still wet, apply an even coat of approved cement to the pipe equal to the depth of the fitting
socket along with an even coat of approved cement to the fitting socket.
e. Apply a second coat of cement to the pipe.
f. While the cement is still wet, insert the pipe into the fitting, if possible twist the pipe a 1/4 turn as you insert
it. NOTE: If voids are present, sufficient cement was not applied and joint could be defective.
g. Wipe excess cement from the joint removing ring or beads as it will needlessly soften the pipe.
Near boiler PVC/ CPVC venting.
Starter piece must have a minimum length according table 9-7 "PVC Exhaust Venting".
PVC/ CPVC
PVC PIPE
COUPLING
STARTER PIECE
IN CPVC
Figure 9-2
E93.1601EN032.C VGH installation manual
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PIPE CONNECTIONS
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