Setting The Operation Mode; Setting The Parameters - Navien NCB-180 Installation & Operation Manual

Display
Outdoor air temperature (°F)
(with optional Outdoor Temperature
Sensor only)
S R O/R psi
Outdoor reset curve
-: Not in use.
1: Finned tube baseboard
2: FAN coil
3: Cast iron baseboard
4: Low mass radiant
S R O/R psi
5: High mass radiant
6: Radiator
7: Custom (set by installer)
Boost interval time (set by installer)
S R O/R psi
Space heating water pressure in PSI
S psi
R O/R
To exit information mode, press the Reset button.

9.4 Setting the Operation Mode

1. Using the Front Panel, press and hold the Diagnostics Button
for over 5 seconds until "1.PAR" is displayed.
Description
MODE
2. Press the + (Up) button two times to change the display to
"3.OPR".
3. Press the Mode Button once to access the Operation Mode
menu.
4. Press the + (Up) button once to set the boiler to operate at
1-stage MIN ("MIN.1").
5. To set the boiler to operate at DHW 2-stage MAX, press the +
(Up) button until "D.MX.2" is displayed.
6. To exit the Operation Mode setting and return the boiler to
normal operation, press the Reset button twice.

9.5 Setting the Parameters

You can modify parameter settings for boiler operations, such
as the space heating and DHW temperature ranges, in different
operating conditions. Follow the instructions below to enter the
Special Parameter mode and change parameter settings.
CAUTION
Parameters must be set by a qualified professional with
an extensive understanding of the boiler system. Setting
parameters improperly may lead to property damage or injury.
1. Press and hold the Diagnostic button for 5 seconds to enter
the Special Parameter mode.
2. Press the + or – buttons to move to "1.PAR" (Parameter Setting
mode), and then press the Mode button. You will be asked
to enter a password ("PASS" is displayed). The factory default
password is "1234".
MODE
Operating the Boiler 51