Setting The Initial Number Of Activating Units For Cascade Systems - Navien NR-20DU Manual

Setting the initial number of activating units for Cascade systems

1
Press the Timer and Lock button simultaneously
for 2 seconds with the Power off.
The number of initial activating water heaters is
displayed.
The maximum number of units in a
Note
cascade system is 16.
2
sec
2
or
Press the Up or Down button to adjust the number
of units.
Press the OK button to save the changes.
When you do not press the OK button for
Note
10 seconds, the changes will not be saved.