Lochinvar TNR-I&S-02 service manual Rain Cap to Small Vent Pipe Ass’y

TNR-I&S-02

4.Partially assemble vent kit by performing the following:

a.Cement concentric Y fitting to larger diameter pipe. (See Figure 18).

b.Cement rain cap to smaller diameter pipe. (See Figure 19).

Figure 19

Rain Cap to Small Vent Pipe Ass’y

5.Install concentric Y fitting and pipe assembly through the structure’s hole and field-supplied roof boot/flashing. Do not allow insulation or other materials to accumulate inside pipe assembly when installing through the hole.

6.Secure assembly to roof structure as shown in (Figure 20) using field- supplied metal strapping or equivalent support material.

NOTICE

Ensure termination height is above the roof surface or anticipated snow level. Figure 20. If assembly is too short to meet height requirements, the 2 pipe supplied in the kit may be replaced by using the same diameter pipe. DO NOT extend the overall dimension by more than 60 in. (See Figure 17).

Figure 20

Concentric Vent Roof Top Attachment

7.Install rain cap and small diameter pipe assembly in roof penetration assembly. Ensure small diameter pipe is cemented and bottomed in Y concentric fitting.

8.Cement heater combustion-air and vent pipes to concentric y fitting assembly (Figure 18). (See Figure 20) for proper pipe attachment.

9.Operate heater through one cycle to ensure combustion-air and vent pipes are properly connected to concentric vent termination connections.

Horizontal Installation:

1.Become familiar with coaxial vent kit. As shown in Figures 17 through 19.

2.Determine the best location for the termination kit.

NOTICE

Position termination where vent vapors will not damage plants/shrubs or air conditioning equipment.

Position termination where vent vapors will not be adversely effected by wind condition.

Position termination where it will not be damaged or be subjected to foreign objects.

Position termination where vapors will not be objectionable.

3.Cut the recommended 5" diameter hole.

4.Partially assemble vent kit.

a.Cement Y concentric fitting to larger diameter kit pipe. (See Figure 18).

b.Cement rain cap to smaller diameter kit pipe. (See Figure 19).

5.Install concentric Y fitting and pipe assembly through the structure’s hole and field-supplied roof boot/flashing. Do not allow insulation or other materials to accumulate inside pipe assembly when installing through the hole.

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

7.Secure assembly to structure as shown in Figure 21. Ensure clearances as shown in Figure 21.

8.Cement heater combustion-air and vent pipes to concentric Y fitting termination assembly. (See Figure 21) for proper pipe attachment.

9.Operate heater through one cycle to ensure combustion-air and vent pipes are properly connected to concentric vent termination connections.

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