Navien Combi Boiler: Set the altitude with DIP switch 2
Set the altitude with DIP switch 2 on a Navien combi boiler: DIP switch 2 #2 and #3 select the altitude band.
Applies to: NCB-250/150H, NCB-240/130H, NCB-240/110H, NCB-190/080H, NCB-190/060H
How to fix set the altitude with dip switch 2: step by step
- 0-1,999 ft: 2 OFF, 3 OFF.
- 2,000-5,399 ft: 2 ON, 3 OFF.
- 5,400-7,699 ft: 2 OFF, 3 ON.
- 7,700-10,100 ft: 2 ON, 3 ON.
If the unit shows an error code, look it up: Navien Combi Boiler codes
Models
NCB-190/060HNCB-190/080HNCB-240/110HNCB-240/130HNCB-250/150H
Source: Navien NCB-H Installation & Operation Manual, 6.2 DIP Switch 2, p.76-77. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.