Lochinvar 51-211 operation manual Sidewall termination optional concentric vent models

Installation & Operation Manual

4 Sidewall direct venting (continued)

Sidewall termination – optional concentric vent models

Figure 4-8Concentric Vent Dimensional Drawing

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. 4-9).

5.Install the Y concentric fitting and pipe assembly through the structure’s hole.

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.

6.Install the rain cap and small diameter pipe assembly into the Y concentric fitting and large pipe assembly. Ensure small diameter pipe is bottomed and cemented in the Y concentric fitting.

7.Secure the assembly to the structure as shown in FIG. 4-10 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
NOTICE
	allow 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.
	Do not extend dimension D more than 60
	inches (see FIG. 4-8).

Figure 4-9Rain Cap to Vent Pipe Alternate Assembly

NOTICE	If assembly needs to be reduced, dimension
	D can be as short as possible.

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