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Installation & Operation Manual
22
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.
4-11). 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. 4-11. The next two (2) 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. 4-11 represents
the distance between pipes or rain shields, as touching or a
2 inch maximum separation.
Figure 4-11 Concentric Vent and Combustion Air Termination Dimension A as Touching
or 2 inches Maximum Separation
Figure 4-10 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. 4-10 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