Lochinvar 151 operation manual PVC/CPVC Air intake/vent connections, Vent Pipe, and Fittings

Installation & Operation Manual

3 General venting (continued)

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.

c.Apply a liberal even coat of primer to the pipe end to approximately 1/2" beyond the socket depth.

d.Apply a second primer coat to the fitting socket.

e.While primer is still wet, apply an even coat of approved cement to the pipe equal to the depth of the fitting socket.

Table 3A Vent Pipe, and Fittings

f.While primer is still wet, apply an even coat of approved cement to the fitting socket.

g.Apply a second coat of cement to the pipe.

h.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.

i.Wipe excess cement from the joint removing ring or beads as it will needlessly soften the pipe.

All vent pipe materials and fittings must comply with the following:

Item	Material	Standards for installation in:
		United States	Canada
	PVC Plastic Pipe, Schedules 40, 80, & 120	ANSI/ASTM D1785
	PVC Plastic Pipe Fittings, Schedule 40	ANSI/ASTM D2466	CPVC and PVC venting must be ULC-S636
	PVC Plastic Pipe Fittings, Schedule 80	ANSI/ASTM D2467
Vent pipe and			Certified. IPEX is an approved manufacturer
fittings	PVC - DWV Pipe and Fittings	ANSI/ASTM D2665	in Canada supplying vent material listed to
			ULC-S636.
	CPVC Plastic Pipe, Schedule 40 & 80	ANSI/ASTM F441
	CPVC Plastic Pipe Fittings, Schedule 80	ANSI/ASTM F439
	AL29-4C	UL1738	ULC-S636
	NOTICE: DO NOT USE CELLULAR (FOAM) CORE PIPE
	Approved Stainless Steel Vent Manufacturers
	Make		Model
ProTech Systems (Simpson Dura-Vent Co.)			FasNSeal Vent / FasNSeal Flex* Vent
Z-Flex (Nova Flex Group)			Z-Vent
Heat Fab (Selkirk Corporation)			Saf-T Vent

*Use of FasNSeal Flex smooth inner wall vent is to be used in vertical or near vertical sections only, taking precaution to ensure no sagging occurs of the vent system. Connect to the FasNSeal rigid vent using specially designed adapters and sealing method, see manufacturer’s instructions.

PVC/CPVC Air intake/vent connections

1.Combustion Air Intake Connector (FIG.’s 3-9 thru 3-11) - Used to provide combustion air directly to the unit from outdoors. A fitting is provided on the unit for final connection. Combustion air piping must be supported per guidelines listed in the National Mechanical Code, Section 305, Table 305.4 or as local codes dictate.

2.Vent Connector (FIG.’s 3-9 thru 3-11) - Used to provide a passageway for conveying combustion gases to the outside. A transition fitting is provided on the unit for final connection. Vent piping must be supported per the National Building Code, Section 305, Table 305.4 or as local codes dictate.

Figure 3-9Near Water Heater PVC/CPVC Venting Models 151 - 200

AIR

VENT

3” CPVC PIPE SUPPLIED WITH WATER HEATER MUST BE USED FOR VENT CONNECTION

NOTE: CPVC VENT PIPE AND VENT FITTINGS MUST BE USED IN CLOSET AND ALCOVE INSTALLATIONS.

Figure 3-10Near Water Heater PVC/CPVC Venting Models 286 - 601

AIR

VENT

4" CPVC PIPE SUPPLIED WITH WATER HEATER MUST BE USED FOR VENT CONNECTION

NOTE: CPVC VENT PIPE AND VENT FITTINGS MUST BE USED	19
IN CLOSET AND ALCOVE INSTALLATIONS.