Turning The Boiler On Or Off; Adjusting The Temperature - Navien NCB300-28K Installation & Operation Manual

10.2 Turning the Boiler On or Off

To turn the boiler on or off, press the Power button (

10.3 Adjusting the Temperature

10.3.1 Adjusting the Central Heating Temperature
To adjust the central heating temperature:
1. In normal operation mode, press the menu button (
The CH demand icon blinks on the screen.
50 Operating the Boiler
2. Press the Plus button (
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.
Note
●
●
●
).
●
) or the Minus button (
Take note of the original heating temperature in
case you want to restore it to the default.
The default central heating supply water
temperature range is 40°C (Absolute MIN) to 90°C
(Absolute MAX).
The central heating temperature cannot be
adjusted when the Outdoor Reset Control is used.
The central heating temperature cannot be
adjusted, when the Heat Demand function is set to
OpenTherm.
) until