Lochinvar FTxl 400 Installation & Operation Manual page 30

4
Sidewall direct venting
Sidewall termination – optional concentric vent: Models 400 - 600 Only
Figure 4-11 Concentric Vent Sidewall Attachment
ELBOW
(FIELD SUPPLIED)
COMBUSTION AIR
VENT
DO NOT use fi eld-supplied couplings
CAUTION
to extend pipes. Airfl ow restriction
will occur and may cause intermittent
operation.
8. Cement appliance combustion air and vent pipes to the
concentric vent termination assembly. See FIG. 4-11
for proper pipe attachment.
9. Operate the appliance one (1) heat cycle to ensure
combustion air and vent pipes are properly connected
to the concentric vent termination connections.
Figure 4-12 Concentric Vent and Combustion Air Termination
30
STRAP
(FIELD SUPPLIED)
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). 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.
Installation & Operation Manual
COMBUSTION AIR
VENT