Navien NPE-180A Service Manual page 24

NOTE
To use the water heater at a specific altitude, the DIP switches should be set as described above.
●
When configuring a cascade system, all settings other than the high altitude, gas type and preheating settings are controlled by the DIP
●
switch settings on the master unit.
When installing an NPE water heater with NR, NP, or CH series units, individual unit settings apply to the lime alarm and cascade venting.
●
2-switch Panel:
●
Switch Function
1 Cascade Vent
Gas Type
(Applies to Main PCB & Front panel
2
version V1.4 (July 11, 2013) or later
versions only.)
Setting
Common Vent
Individual Vent
Natural Gas
Propane Gas
1-OFF
1-ON
OFF
ON
System Details 23