Lochinvar 81 - 286 - Manual (Page 27)

27
Installation & Operation Manual
4
Sidewall direct venting
(continued)
Sidewall termination – optional concentric vent
Multiventing sidewall terminations
When two (2) or more direct vent appliances are vented near
each other, each appliance must be individually vented (see
FIG. 4-13). 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. 4-13. It is important that vent terminations be made as
shown to avoid recirculation of flue gases.
VENT
COMBUSTION
AIR
12"
MINIMUM
Figure 4-13 Concentric Vent and Combustion Air Termination
Figure 4-12 Concentric Vent Sidewall Attachment
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.
4-12 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.
CAUTION
Note: CVK3003 shown for illustration purposes.