Lochinvar WH 55-399 12 Concentric Vent Sidewall Attachment, Multiventing sidewall terminations

Installation & Operation Manual

4 Sidewall direct venting

Sidewall termination – optional concentric vent

Figure 4-12Concentric Vent Sidewall Attachment

	DO NOT use field-supplied couplings to	Multiventing sidewall terminations
CAUTION
	extend pipes. Airflow restriction will occur
		When two (2) or more direct vent appliances are vented near
	and may cause intermittent operation.
		each other, each appliance must be individually vented (see
		FIG. 4-13). NEVER common vent or breach vent this appliance.
8. Cement appliance combustion air and vent pipes to the		When two (2) or more direct vent appliances are vented near
concentric vent termination assembly. See FIG. 4-12 for		each other, two (2) vent terminations may be installed as shown
proper pipe attachment.		in FIG. 4-13. It is important that vent terminations be made as
		shown to avoid recirculation of flue gases.

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

12"

MINIMUM

VENT

COMBUSTION

AIR

Figure 4-13Concentric Vent and Combustion Air Termination

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