Navien NFB-175H User's Information Manual page 11

2. Press the Command dial (
zone's temperature will flash.
The number of the zones differs depending on the zone settings and Pump 1 settings.
Note
Zone Settings Pump1 Settings
N/A
Zone Pump
System
Zone Pump
System
Zone Valve
System
3. Rotate the Command dial (
temperature.
4. Press the Command dial (
5. Press and hold the Command dial (
rotate the Command dial (
The space heating temperature cannot be adjusted when the Outdoor Reset Control is used.
Note
●
The space heating temperature cannot be adjusted if the boiler is operating as a sub unit in a
●
cascade system. The main unit's set temperature will be displayed on the screen.
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.
●
3.2.3 Adjusting the DHW Indirect Supply Temperature
To adjust the water temperature:
1. In normal operation mode, rotate the Command dial (
on the screen.
) to select the desired zone, and then press the Command dial (
N/A Space heating temperature settings
Space heating temperature settings for Zone 2 and Zone 3
DHW Pump
(Pump 1 Settings" is set to "DHW Pump".)
Space heating temperature settings for Zone 1, Zone 2 and
Zone1 Pump
Zone 3
DHW Pump Space heating temperature settings for Zone 1, Zone 2 and
(Default) Zone 3
) to the right or left to increase or decrease the selected zone's space heating
) to confirm the new temperature.
) for more than 2 seconds to return to normal operation mode, or
) to adjust another zone's temperature.
Space heating settings for each zone
). The space heating temperature(
). The selected
) is highlighted
Operating the Boiler 11