Installation & Operation Manual

4Sidewall direct venting (continued)

Sidewall termination – optional concentric vent: Models 399 - 600 Only

Figure 4-11Concentric Vent Sidewall Attachment

STRAP (FIELD SUPPLIED)

ELBOW (FIELD SUPPLIED)

COMBUSTION AIR

COMBUSTION AIR

VENT

VENT

CAUTION

DO NOT use field-supplied couplings to

extend pipes. Airflow restriction will

 

 

occur and may cause intermittent

 

operation.

9.Cement appliance combustion air and vent pipes to the concentric vent termination assembly. See FIG. 4-11 for proper pipe attachment.

10.Operate the appliance one (1) heat cycle to ensure combustion air and vent pipes are properly connected to the concentric vent termination connections.

VENT

COMBUSTION

AIR

Multiventing sidewall terminations

When two (2) or more direct vent appliances are vented near each other, each appliance must be individually vented (see FIG. 4-12). NEVER common vent or breach vent this appliance. When two (2) or more direct vent appliances are vented near each other, two (2) vent terminations may be installed as shown in FIG. 4-12. The next two (2) terminations must be at least 36 inches (914 mm) away from the first two (2) terminations. It is important that vent terminations be made as shown to avoid recirculation of flue gases. Dimension A in FIG. 4-12 represents the distance between pipes or rain shields, as touching or a 2 inch (51 mm) maximum separation.

"A"

36" (914 MM)

Figure 4-12Concentric Vent and Combustion Air Termination Dimension A as

Touching or 2 inches (51 mm) Maximum Separation

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Lochinvar 800 operation manual 11Concentric Vent Sidewall Attachment, Multiventing sidewall terminations

800 specifications

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