Lochinvar WH 55-399 Approved PVC/CPVC Vent Pipe and Fittings, Pvc/Cpvc, Item, Material, Standard

Installation & Operation Manual

3 General venting (continued)

PVC/CPVC

This product has been approved for use with the PVC/CPVC vent materials listed in Table 3D.

Installing vent and air piping

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.

￿WARNING

NOTICE

The vent connection to the appliance must be made with the starter piece 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 that are approved for the materials which are joined together.

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.
	(Moisturewillretardcuringanddirtorgreasewillprevent
	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"

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).

￿WARNING Insulation should 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.

Table 3D PVC/CPVC Vent Pipe, and Fittings

Approved PVC/CPVC Vent Pipe and Fittings

Item	Material	Standard
	PVC Schedule 40, 80	ANSI/ASTM D1785
Vent pipe	PVC - DWV	ANSI/ASTM D2665
	CPVC Schedule 40, 80	ANSI/ASTM F441
	PVC Schedule 40	ANSI/ASTM D2466
Vent fittings	PVC Schedule 80	ANSI/ASTM D2467
	CPVC Schedule 80	ANSI/ASTM F439
Pipe Cement /	PVC	ANSI/ASTM D2564
Primer	CPVC	ANSI/ASTM F493

NOTICE: DO NOT USE CELLULAR (FOAM) CORE PIPE

NOTE: In Canada, CPVC and PVC vent pipe, fittings and cement/ primer must be ULC-S636 certified.

	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.

Figure 3-7Near Boiler PVC/CPVC Venting

CPVC STARTER PIECE

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