Navien NFC-250/200H User's Information Manual page 11

5. Press the Back button (
operation mode, or rotate the Command dial
( ) to adjust other operation conditions.
You can adjust the temperature while the
highlighted section is flashing. Once the flashing
stops, the current temperature setting is stored.
The space heating temperature
Note
cannot be adjusted when the Outdoor
Reset Control is used.
In case of outdoor reset sensor
malfunction, the boiler will operate at
this set temperature.
Take note of the original heating
temperature in 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 ranges
in the parameter settings menu.
The boiler will retain your settings
during a power outage.
3.2.2 Adjusting the DHW Temperature
To adjust the water temperature:
1. In normal operation mode, rotate the Command
dial ( ). The space heating temperature (
highlighted on the screen.
) to return to normal
) is
2. Rotate the Command dial (
select the DHW temperature.
3. Press the Command dial (
temperature ( ). The highlighted section will
flash.
4. Rotate the Command dial (
left to increase or decrease the temperature.
5. Press the Command dial (
new temperature.
6. Press the Back button (
operation mode, or rotate the Command dial
( ) to adjust other operation conditions.
You can adjust the temperature while the display is
flashing. Once the display stops flashing, the current
temperature setting is stored.
Take note of the original DHW
Note
temperature in case you want to
restore it to the default.
The DHW temperature range is 86°F
(30°C) to 140°F (60°C) with 120°F as
the default setting.
The boiler will retain your settings
during a power outage.
) to the right to
) to select the DHW
) to the right or
) to confirm the
) to return to normal
Operating the Boiler 11