Navien Boiler: Change gas type with DIP switch 2
Change gas type with DIP switch 2 on a Navien boiler: DIP switch 2 #1 sets natural gas or propane and must match the rating plate and the Start-up Wizard.
Applies to: Navien NHB-H condensing boilers: NHB-150H, NHB-110H, NHB-080H, NHB-055H
How to fix change gas type with dip switch 2: step by step
- Turn power off before removing the front cover.
- DIP switch 2, #1: OFF = natural gas, ON = propane.
- SW2 #1 must match the gas on the rating plate (E788 if wrong).
If the unit shows an error code, look it up: Navien Boiler codes
Models
NHB-055HNHB-080HNHB-110HNHB-150H
Source: Navien NHB-H Installation and Operation Manual, 6.2 DIP Switch 2, p.68-69; 3.5 Air Handler Interface p.28; 10 Installation Checklist p.96. 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.