About The Operating Status Information; Viewing Basic Information - Navien NFB-301C User's Information Manual

3.3 About the Operating Status
Information
The following table provides detailed information for the operating
status displays that appear when using the boiler.
Operating Status
Item
Displays
Standby
Start Up
Operation
Post Purge
Set Point
Match
ERROR
Alarm
Description
The boiler is on standby for
a new operation.
The boiler operation has
started. (The pre-purge
is being performed by
operating the fan and the
pump is operating.)
The flame has been
detected. The heat is being
controlled via ratio control.
Combustion has stopped.
The post-purge is being
performed by operating
the fan.
The set temperature
has been reached and
combustion has stopped.
The boiler is on standby
for a new operation until
reignition is required.
Combustion has stopped
due to an error. To view
detailed error information,
tap the operating status
display.
An alarm has occurred.
Boiler operation may be
restricted. To view detailed
alarm information, tap the
operating status display.

3.4 Viewing Basic Information

To view information about the boiler, tap the Control button ( (
> Status on the screen.
Tap an item to view the information.
Item
1. SH Set Temp Space heating set temperature (°F)
2. DHW Set Temp DHW indirect supply temperature (°F)
3. SH Supply Temp Heating supply temperature (°F)
4. SH Return Temp Boiler return temperature (°F)
5. System Supply
System supply temperature (°F)
Temp
6. System Return
System return temperature (°F)
Temp
7. Outdoor Temp Outdoor temperature (°F)
8. Exhaust Temp Exhaust temperature (°F)
9. Flow Rate Flow rate (GPM)
10. Water Pressure Water pressure (psi)
Flame detector AD value
Flame On: 8bit AD values equal to or
11. Flame Value lower than 70
Flame Off: 8bit AD values equal to or
higher than 175
12. Heat Capacity Heat capacity (%)
13. Target RPM Set fan speed (RPM)
14. Current RPM Fan speed (RPM)
15. Target APS Set APS voltage (V)
16. Current APS APS voltage (V)
)
Description
Operating the Boiler 9