Pvc/Cpvc - Cadet 40-120 Installation And Service Manual

3
General venting

PVC/CPVC:

This product has been approved for use with the PVC/CPVC
vent materials listed in Table 3D.
Installing vent and air piping
WARNING The flue pipe adapter acts as the CPVC starter
pipe section provided with the appliance if
PVC/CPVC vent is to be used (FIG. 3-7). The
field provided vent fittings must be cemented
to the CPVC pipe section using an "All Purpose
Cement" suitable for PVC and CPVC pipe.
Use only the vent materials, primer, and
cement specified in Table 3D to make the vent
connections.
could result in fire, personal injury, or death.
Use only cleaners, primers, and solvents that
NOTICE
are approved for the materials which are joined
together.
All PVC vent pipes must be glued, properly
NOTICE
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).
Insulation should not be used on PVC or CPVC
WARNING
venting materials. The use of insulation will
cause increased vent wall temperatures, which
could result in vent pipe failure.
For installations using 2" vent, the first seven
WARNING
(7) equivalent feet of vent must be CPVC (field
supplied). See examples below.
For models 40 - 100 when transitioning from
WARNING
2" to 3" vent diameter, a 2" pipe section and 2"
to 3" increaser are required to be CPVC when
PVC/CPVC vent is used.
Examples: 1. Seven (7) feet vertical
2. Connector + 90° elbow + 2 feet horizontal
3. One (1) foot vertical + 90° elbow + 1 foot
horizontal
Table 3D PVC/CPVC Vent Pipe, and Fittings
Approved PVC/CPVC Vent Pipe and Fittings
Item Material
PVC Schedule 40, 80 ANSI/ASTM D1785
Vent pipe PVC - DWV
CPVC Schedule 40, 80 ANSI/ASTM F441
PVC Schedule 40
Vent fittings PVC Schedule 80
CPVC Schedule 80
Pipe Cement / PVC
Primer
CPVC
NOTICE: DO NOT USE CELLULAR (FOAM) CORE PIPE
NOTE: In Canada, CPVC and PVC vent pipe, fi ttings and cement/
primer must be ULC-S636 certifi ed.
(continued)
Failure to follow this warning
Standard
ANSI/ASTM D2665
ANSI/ASTM D2466
ANSI/ASTM D2467
ANSI/ASTM F439
ANSI/ASTM D2564
ANSI/ASTM F493
Installation & Service Manual
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 fit up before
assembling any joint. The pipe should 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:
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.
Figure 3-7 Near Boiler PVC/CPVC Venting
VENT
If voids are present,
AIR
IMG00225
19