Lochinvar KNIGHT XL 801 - Manual (Page 29)

29
4
Sidewall direct venting
(continued)
Sidewall termination – optional concentric vent: Models 400 - 601 Only
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. It is important that vent
terminations be made as shown to avoid recirculation of fl ue
gases.
VENT
COMBUSTION
AIR
12"
MINIMUM
Figure 4-12 Concentric Vent and Combustion Air Termination
COMBUSTION AIR
VENT
VENT
COMBUSTION AIR
STRAP
(FIELD SUPPLIED)
ELBOW
(FIELD SUPPLIED)
Figure 4-11 Concentric Vent Sidewall Attachment
DO NOT use fi eld-supplied couplings
to extend pipes. Airfl ow 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.
CAUTION
Installation & Operation Manual