Navien NFB-301C - Page 10

10 About the Boiler
Terminal Block
Dual Venturi
Fan & Motor Assembly
Optional Heating Return
Fire-Tube Type
Heat Exchanger
Gas Pipe
Power Switch
Heating Return
Gas Valve
ASME Name Plate
Mixing Chamber
Internal Air Filter
PRV-Air Vent Connection
(Optional Heating Supply)
Heating Supply
Condensate Trap
(Siphon)
PCB
Front Panel
APS
Air Intake Pipe