Navien NPN User Manual

8 About the Water Heater
2.4 The Front Panel
The front panel allows you to adjust the water temperature and view the operating status or error codes. Remove
the protective sheet from the front panel before using it.
Note
The front panel of the outdoor model is placed inside the water heater. It is used only for installation
and maintenance.
a
b
c
d
e
f
g
h
i
j
k
a
f
h
c
i
d
j
e
k
For indoor models For outdoor models
a
Error
g
Master Unit
A code will appear on the display Cascade operation
b
Hot Water Recirculation
h
Display
Recirculation Mode
c
Diagnostics button
i
Up button
For installers only Increases the temperature
d
Information button
j
Down button
Shows basic information Decreases the temperature
e
Reset button
k
Power button
Resets the water heater (When an error occurs) Turns the water heater on or off
f
Combusting
When the gas burner is on

Navien NPN Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Efficiency	Up to 0.96 UEF
Voltage	120V
Temperature Range	98°F - 140°F
Installation Type	Indoor/Outdoor
Max GPM	11.2 GPM
Gas Connection	3/4 inch NPT
Water Connection	3/4 inch NPT
Vent Size	2 inch or 3 inch PVC/CPVC
Warranty	15 years heat exchanger, 5 years parts