Terminating The Vent - Navien NCB-180 Installation & Operation Manual

5.4 Terminating the Vent

Before installing the boiler, determine what type of vent
termination is appropriate for the installation location and
situation. The subsections that follow describe some typical
venting configurations.
CAUTION
Minimum Clearance to Metering devices and Relief
equipment. Maintain a minimum horizontal clearance of 4 ft
(1.22 m) from electric meters, gas meters, regulators, and relief
equipment. Do not install the boiler above or below electric
meters, gas meters, regulators, or relief equipment unless a 4 ft
(1.22 m) horizontal clearance is maintained.
Indoor Boiler Installation Venting Examples
The following are some possible indoor venting options:
2 in or 3 in Two-pipe Sidewall Venting
●
1 2 " ( 3
Exterior View
Intake Air
Exhaust Gas
Intake Air
i n .
m ) m
0 0 m
Exhaust Gas
Intake Air
Venting the Boiler 41