Navien NFB Series, Installation & Operation Manual, Page: 85 / 232

85 Operating the Boiler
Rotate the Command dial ( ) to switch between the information
items. Press the Command dial ( ) to select an item and view the
information.
Press the Back button ( ) to exit information view mode.
Item Description
1. Operation State Current Operation State
2. Heat Capacity Heat Capacity (%)
3. SH Set Temp Space heating set temperature (°F)
4. DHW Set Temp DHW indirect supply set temperature (°F)
5. Supply Temp Heating supply temperature (°F)
6. Return Temp Boiler return temperature (°F)
7. Sys Supply Temp System supply temperature (°F)
8. Sys Return Temp System return temperature (°F)
9. Outdoor Temp Outdoor temperature (°F)
10. Approx. Boiler
Flow
Flow rate (GPM)
11. DHW Temp DHW indirect supply temperature (°F)
12. Tank Sensor
Temp
DHW indirect tank temperature (°F)
13. Water Press Water pressure (psi)
14. Flame Value
Flame detector AD value
●
Flame On: 8bit AD vlaues equal to or
lower than 70
●
Flame Off: 8bit AD values equal to or
higher than 175
15. Fan Target RPM Set fan speed (RPM)
16. Fan Current RPM Fan speed (RPM)
11.3 Accessing Basic Menu Items
In the Menu Select screen, you can view the boiler’s operating
conditions, configure the space heating and DHW temperatures,
and review error history. Press the Menu button ( ) to enter the
Menu Select screen.
11.3.1 Quick Setup Menu
The Quick Setup Menu is designed to help configure the boiler
settings after installation is complete. To enter the Quick Setup
Menu, press the Menu button ( ), and select “1.Quick Setup
Menu”. Press the Back button ( ) to return to the previous screen.
Item Description
1. Zone Settings Set the zone system type.
1-1. Pump 1 Settings Set the Pump 1 type.
2. Outdoor Reset
ON/OFF
Set the Outdoor Reset Control settings.
2-1. Outdoor Reset
Curves
Set the Outdoor Reset Curve when the
Outdoor Reset is used.
2-2. Outdoor High
Temp Set
Set the maximum value for the Outdoor
Reset Control when the Outdoor Reset
is used.
2-3. Outdoor Low
Temp Set
Set the minimum value for the Outdoor
Reset Control when the Outdoor Reset
is used.
2-4. WWSD Temp Set the WWSD temperature.
3. DHW Call Signal
Set the demand type for the DHW
operation.
4. Time Setting
Set the system clock (RTC).
●
Display format: YYYY.MM.DD /
HH:MM:SS
11.3.2 Viewing Basic Information
To view information about the boiler, press the Menu button ( ),
and then select “2. Status Information”.