Multi Remote Controller System - Navien NPN Installation & Operation Manual

4.5 Multi Remote Controller
System
The multi remote controller system consists of
one main remote controller and one sub remote
controller. The system must have only one main
remote controller.
4.5.1 Initially Setting the Multi Remote
Controller System
If you turn on the water heater with the front panel
connected to two remote controllers, one of the
controllers is set to the main controller randomly.
The other controller will display "MAIN" on its LCD
display and you have to set its operation mode to
Sub.
The remote controller that does not display "MAIN"
is already operating as the main controller, you don't
have to set its operation mode.
You can set the operation mode of the remote
controller that displays "MAIN. " When you set the
controller as a sub, the multi remote controller
system configuration completes.
If you press the OK button on the
Note
controller displaying "MAIN" and
set its operation mode to Main
while the main controller has
already been determined, the
other controller will display "MAIN"
to indicate that you must set the
main and sub operation modes
properly.
48 Configuring the Remote Controller System
1. Press the Down button on the remote controller
displaying "MAIN" to set its operation mode to
"SUB. "
Then, press the OK button to set the operation
mode to Sub.
2. "SL.xx" appears on the display.
It represents the standby status to receive the
sub remote controller ID from the main remote
controller synced to the front panel of the water
heater.
3. When the ID is assigned, the ID appears and
flashes on the LCD display for 2 seconds.