Navien NCB-180 Installation & Operation Manual page 53

3. Press the Mode button and enter your 4-digit password. Use
the + or – buttons to increase or decrease numbers and the
Diagnostic button to move between digits.
4. When you are done, press the Mode button.
5. Press the + or – buttons to move to a parameter setting, and
then press the Mode button to enter the Parameter Edit mode.
6. Press the + or – buttons to change the parameter value.
7. When you are done, press the Mode button to save the
settings.
If you enter an incorrect password 10 times or make
Note
●
no inputs 5 minutes, the boiler will return to the
Normal mode.
To return to the previous mode, press the Reset
●
button.
The Factory default password is "1234".
●
If you make no inputs for 10 seconds in the
●
Parameter Edit mode, the current parameter value
will be saved automatically.
Press and hold the Reset button in Parameter Edit
●
mode for 5 seconds to reset setting to their default
values.
When you reset one of the following parameters,
●
the corresponding parameter will be reset
automatically:
- Supply absolute MIN or MAX
- Return absolute MIN or MAX
- Lowest Outdoor Temperature or Highest Outdoor
Temperature
Configuring the Outdoor Reset Control Mode
Display
S R O/R psi
S psi
R O/R
52 Operating the Boiler
Description
Outdoor Reset enabled
Outdoor Reset disabled
This mode is used to configure the Outdoor Reset Control mode.
This mode is disabled by default from the factory.
CAUTION
An outdoor sensor error may occur if the Outdoor Reset
Control mode is enabled without the outdoor sensor installed
In the Outdoor Reset Control mode, the boiler's water
Note
temperature is regulated according to the outdoor
temperature. The Outdoor Reset Control operation
ensures that the system provides optimal space
heating. It helps limit the cost for space heating
by preventing unnecessary fuel consumption and
minimizes air pollution.
Setting the Heat Load for the Outdoor Reset Control Mode
Display
Outdoor Reset heat load types
1: Finned tube baseboard
2: FAN coil
3: Cast iron baseboard
4: Low mass radiant
5: High mass radiant
S R O/R psi
6: Radiator
7: Custom
Outdoor Reset heat load not
selected
psi
S R O/R
This mode is used to configure the heat load type to be used with
the Outdoor Reset Control mode.
A preset or user-defined temperature range is selected
automatically based on the heat load type selected.
Description