Navien NHB-150 Service Manual

NHB Service Manual 13
Version 1.0
2.1 Product Information Items
Navien features the NHB Series gas boiler. This appliance is fully
modulating and provides central heating. Depending on the heat
capacity, each model is divided into four types; 055, 080, 110 and
150.
Model Maximum Space Heating Input
NHB-055 55,000 Btu / h
NHB-080 80,000 Btu / h
NHB-110 110,000 Btu / h
NHB-150 150,000 Btu / h
A separate heating expansion vessel is required.
Internal freeze protection and an electronic control unit are
incorporated within the boiler. Any standalone room thermostat or
set of contacts can be used with the boiler.
2. Product Information

Navien NHB-150 Specifications

General

Model	NHB-150
Category	Boiler
Maximum Input	150, 000 BTU/h
AFUE	95%
Vent Type	Direct Vent
Fuel Type	Natural Gas or Propane
Min. Input (NG)	15, 000 BTU/h
Min. Input (LP)	15, 000 BTU/h
Voltage	120 V
Water Connection Size	1 inch NPT
Gas Connection Size	3/4 inch NPT
Vent Diameter	3"