Lochinvar SNA400-125 12Concentric Vent Sidewall Attachment, Multiventing sidewall terminations

TM

Installation & Service Manual

3Sidewall direct venting

Sidewall termination – optional concentric vent

Figure 3-12Concentric Vent Sidewall Attachment

Note: CVK3003 shown for illustration purposes.

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. 3-12 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.

Multiventing sidewall terminations

When two (2) or more direct vent appliances are vented near each other, each appliance must be individually vented (see FIG. 3-13). 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. 3-13. The vent terminations must be at least 36 inches 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. 3-13 represents the distance between pipes or rain shields, as touching or a 2 inch maximum separation.

Figure 3-13Concentric Vent and Combustion Air Termination Dimension A as Touching or 2 inches Maximum Separation

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