Navien NFB Series Installation & Operation Manual page 82

PCB DIP switch setting (DIP SW 2, set of 8)
Gas type: Is switch #1 set correctly for LP (ON) or NG (OFF)?
If continuous boiler operation is required, is switch #7 in the up (ON) position?
If high temperature venting has been installed (CPVC or polypropylene), is switch #8 in the up (ON) position?
Operating the boiler
Have you given the Installation & Operation Manual and User's Information Manual to the owner for future reference?
Have you shown the owner how to shut off the gas in case of an emergency?
82 Installation Checklist
Yes No
Yes No