Lochinvar 81 - 286 operation manual Concentric

Installation & Operation Manual

4 Sidewall direct venting

Sidewall termination – optional concentric vent

Figure 4-9Concentric Vent Dimensional Drawing -	Figure 4-10 Concentric	Vent	Dimensional	Drawing	-
Models 81 - 211	Model 286
		"A"
	"B" DIA.
	"C" DIA.
		3"	"D"
		(76 MM)
					"E"
	"G"		"H" DIA.
	"B" DIA. PVC			"F"
	VENT / EXHAUST

NOTICE	Instead of cementing the smaller pipe
	to the rain cap, a field-supplied stainless
	steel screw may be used to secure the
	two (2) components together when field
	disassembly is desired for cleaning (see
	FIG. 4-11).

6.Install the Y concentric fitting and pipe assembly through the structure’s hole from an inside wall.

NOTICE	Do not allow insulation or other materials to
	accumulate inside the pipe assembly when
	installing through the hole.

￿WARNING

￿WARNING

When using the alternate screw assembly method, drill a clearance hole in the rain cap and a pilot hole in the vent pipe for the screw size being used. Failure to drill adequate holes may cause cracking of PVC components, allowing combustion products to be recirculated. Failure to follow this warning could result in personal injury or death.

Do not operate the appliance with the rain cap removed or recirculation of combustion products may occur. Water may also collect inside the larger combustion air pipe and flow to the burner enclosure. Failure to follow this warning could result in product damage or improper operation, personal injury, or death.

7.Install the rain cap and small diameter pipe assembly into the Y concentric fitting and large pipe assembly from an outside wall. Ensure small diameter pipe is bottomed and cemented in the Y concentric fitting for #CVK3003 installations and fastened tightly into the rubber adapter for #CVK3007 installations.

8.Secure the assembly to the structure as shown in FIG. 4-12 using field-supplied metal strapping or equivalent support material.

NOTICE	Ensure termination location clearance
	dimensions are as shown in FIG. 4-6.
	If assembly needs to be extended to allow
NOTICE
	sidewall thickness requirement, the two (2)
	pipes supplied in the kit may be replaced
	by using the same diameter, field-supplied
	SDR-26 PVC (D2241) pipe for CVK3003

Figure 4-11Rain Cap to Vent Pipe Alternate Assembly

	and standard schedule 40 PVC for CVK3007.
	Do not extend dimension D* more than 60
	inches (see FIG.’s 4-9 and 4-10).
	If assembly depth needs to be reduced,
NOTICE
	dimension D can be as short as possible.

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