Navien NHB Series User Manual

99Operating the Boiler
11.6 Accessing Advanced Menu Items
11.6.1 Viewing Service Information
To view service information about the boiler:
1. Tap the Set button ( ) > Service.
2. Tap Open on the Service Status Information menu.
Item Description
1. Elapsed time after
install
Elapsed time since installation
2. HEX Overheat - No.
of times
Number of heat exchanger overheating
protection activation
3. Flame Loss - No. of
times
Number of flame loss/misfire
4. 2nd ignition - No.
of times
Number of second ignition
5. 3rd ignition - No.
of times
Number of third ignition
6. 4th ignition - No.
of times
Number of fourth ignition
7. 5 ~10th ignition -
No. of times
Number of tenth ignition
Tap (
) to go to the next page.
Item Description
1. Date & Time
Set the date and time by tapping
and
.
2. Temperature Unit
Set a temperature unit.
1. Celsius (°C)
2. Fahrenheit (°F)
Ɣ
Default: Fahrenheit (°F)
3. Pressure Unit
Set a pressure unit.
1. bar
2. psi
Ɣ
Default: psi

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