Navien NFB-399C User Manual

9About the Boiler
1.4 Components
The following diagram shows the key components of the boiler. Component assembly diagrams and particular parts lists are included in the
Appendixes.
Intake Air
Air Intake Pipe
Exhaust
Optional Heating Return
Fan & Motor Assembly
Dual Venturi
Gas Pipe
PCB
24V Power Transformer
Power Switch
PRV-Air Vent Connection
(Optional Heating Supply)
Condensate Outlet
Mixing Chamber
Igniter
Flame Detector
Fire-Tube Type
Heat Exchanger
ASME Name Plate
Front Panel
APS
Gas Valve
Gas Inlet
Condensate Trap
(Siphon)

Navien NFB-399C Specifications

General

Brand	Navien
Model	NFB-399C
Category	Boiler
Language	English