Pvc/Cpvc - Lochinvar Shield SNR150-100 Installation & Service Manual

2
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 vent connection to the appliance must
be made with the starter CPVC pipe section
provided with the appliance if PVC/CPVC
vent is to be used. 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. Failure to follow
this warning could result in fire, personal
injury, or death.
Use only cleaners, primers, and solvents
NOTICE
that 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 water heater (to allow drainage of
condensate).
Insulation should not be used on PVC
WARNING
or CPVC venting materials. The use of
insulation will cause increased vent wall
temperatures, which could result in vent
pipe failure.
Table 2D 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.
20
1.
2.
3.
4.
5.
6.
Standard
Figure 2-7 Near Water Heater PVC/CPVC Venting
ANSI/ASTM D2665
ANSI/ASTM D2466
ANSI/ASTM D2467
ANSI/ASTM F439
ANSI/ASTM D2564
ANSI/ASTM F493
Installation & Service Manual
TM
Work from the water heater to vent or air termination.
Do not exceed the lengths given in this manual for the
air or vent piping.
Cut pipe to the required lengths and deburr the inside
and outside of the pipe ends.
Chamfer outside of each pipe end to ensure even
cement distribution when joining.
Clean all pipe ends and fittings using a clean dry rag.
(Moisture will retard curing and dirt or grease will prevent
adhesion.)
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.
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.
VENT
4" CPVC PIPE INSTALLED IN THE
WATER HEATER MUST BE USED
FOR VENT CONNECTION
NOTE: CPVC VENT PIPE AND VENT FITTINGS MUST BE USED
IN CLOSET AND ALCOVE INSTALLATIONS.
If voids are present,