The Front Panel - Navien NHB-055 User's Information Manual

2.3 The Front Panel

The front panel allows you to adjust the temperature and view the operating status or error codes. Remove the protective sheet from the front
panel before using it.
2.3.1 Icons and Digital Display
The icons and digital display on the front panel provide important
information required for the boiler's operation. Refer to the
following table for detailed information.
a
Space heating mode
Indicates space heating mode operation.
b
Error
A code will appear on the display.
c
Combusting
Indicates burner operation.
d
DHW mode
Indicates DHW mode operation.
e
Digital Display
6 About the Boiler
b
a
f
g
h
f
Supply water control
Indicates supply water control status.
g
Return water control
Indicates return water control status.
h
Outdoor Reset
Indicates outdoor reset operation.
i
Pri
Pri
Indicates DHW priority operation.
j
psi
Psi
Indicates water pressure.
c
d
e
j
i