Operating The Boiler; Turning The Boiler On Or Off; Adjusting The Temperature - Navien NCB-180 Installation & Operation Manual

9. Operating the Boiler

9.1 Turning the Boiler On or Off

To turn the boiler on or off, press and hold the Power button for
3 seconds.
When the power is on, the water temperature of the space heating
supply will appear with the water pressure on the front panel
display in 5 second intervals.
If the Air purge is operating, "Air" will appear with
Note
●
the water pressure on the front panel display in
5 second intervals.
When displaying the water temperature of the
●
space heating supply, the supply or return water
icon flashes, depending on the space heating
control mode.

9.2 Adjusting the Temperature

9.2.1 Adjusting the Space Heating Temperature
To adjust the heating temperature:
1. Press the Mode button once. The space heating icon turns on.
MODE
MODE
2. Press the + (Up) or – (Down) buttons until the desired
temperature appears on the display.
You can adjust the temperature while the display is flashing. Once
the display stops flashing, the temperature setting is stored.
Take note of the original heating temperature in
Note
●
case you want to restore it to the default.
The default space heating supply water
●
temperature range is 104°F (40°C, Absolute MIN) to
180°F (82°C, Absolute MAX).
The default space heating return water
●
temperature range is 86°F (30°C, Absolute MIN) to
149°F (65°C, Absolute MAX).
You can adjust the temperature range in the
●
parameter settings menu.
The boiler will retain your settings during a power
●
outage.
MODE
Operating the Boiler 49