Navien NPE-180A2 Installation Manual page 72

5. After an ID is assigned to each sub unit, press the
OK button ( ) on the main unit. The temperature
information on the main unit's display will sync
with the sub unit's display.
To add additional sub units later,
Note
●
repeat step 3.
To cancel the cascade setup, press
●
and hold the Menu button (
the Back button (
for 3 seconds to access the Service/
Installer menu. Then select
2. Cascade Status and Set >
4. Cascade System Removal.
Now the water heaters will operate
independently.
To reassign a main unit, repeat steps
●
1 - 5.
5.2.2 Multiple Unit Series Cascade
Settings
Main Unit
Unit Combinations
Assignment
Water Heaters
NPE + NPE-2 NPE
NPE + NPE-2 +
NR or NP NPE, NPE-2
NR or NP
NPE-2 + NR or NP NR or NP
72 Installing a Cascade System
) and
) simultaneously
Cascade
Sub Unit(s)
Protocol
Assignment
Setting
NPE-2 NPE
NR
NPE-2 NR