Accessing Basic Menu Items - Navien NHB-055H User's Information Manual

3.3 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 (
screen.
To view information about the boiler, press the
Menu button ( ), and then select "1. Status
Information".
Rotate the Command dial (
the information items. Press the Command dial (
to select an item and view the information.
Press the Back button (
mode.
Item
1. Operation State Current Operation State
2. Heat Capacity Heat Capacity (%)
Space heating set
3. SH Set Temp
temperature (°F)
DHW indirect supply set
4. DHW Set Temp
temperature (°F)
) to enter the Main Menu
) to switch between
)
) to exit information view
Description
Item
AHU Space Heating Set
Temperature (°F)
●
5. AHU SH Set Temp
●
Note
Use with iFlow Air
Handlers Only.
Heating supply
6. Supply Temp
temperature (°F)
Boiler return temperature
7. Return Temp
(°F)
System supply
8. Sys Supply Temp
temperature (°F)
System return
9. Sys Return Temp
temperature (°F)
10. Outdoor Temp Outdoor temperature (°F)
11. Approx. Boiler
Flow rate (GPM)
Flow
12. DHW Tank set DHW Tank set temperature
Temp (°F)
13. Tank Sensor DHW indirect tank
Temp temperature (°F)
14. Water Press Water pressure (psi)
Flame detector AD value
●
15. Flame Value
●
16. Fan Target RPM Set fan speed (RPM)
17. Fan Current RPM Fan speed (RPM)
18. Fan Target APS Set APS voltage (V)
19. Fan Current APS APS voltage (V)
20. Exhaust Temp Exhaust temperature (°F)
Outdoor reset status
21. Outdoor Reset
(Enable / Disable)
Description
If AHU is not connected,
"--" will be displayed.
The temperature is
displayed by 1 degree
increments for Fahrenheit
and by 0.5 degree
increments for Celsius.
This is due to the degree
control specifications of
0.5 degree for the AHU
communication type.
Flame On: 8bit AD
values equal to or lower
than 70
Flame Off: 8bit AD
values equal to or
higher than 175
Operating the Boiler 13