Navien NHB Series User Manual

90 Operating the Boiler
11.1.1 Turning the Space Heating On or Off
To turn the Space Heating on or off, tap SH ON on the top left of
the screen.
11.1.2 Turning the DHW On or Off
To turn the DHW on or off, tap DHW ON on the top right of the
screen.
11.1 Turning the Boiler on or off
To turn the boiler on:
1. Connect the power cord. When the power is on, the User
Settings screen is displayed.
2. Select the language you want to use and set the vent type,
current date, and time by tapping your selections on the
screen.
3. Tap Done on the top right of the screen to complete the
settings.
11. Operating the Boiler

Navien NHB Series Specifications

General

Type	Condensing Boiler
Efficiency	Up to 95% AFUE
Fuel Type	Natural Gas or Propane
Vent Type	Direct Vent
Vent Diameter	2" or 3"
Heat Exchanger Material	Stainless Steel
Water Connections	3/4" NPT
Dimensions	Varies by model
Weight	Varies by model
Warranty	5-Year Parts