Installation Guide

66 Rinnai I-Series Condensing Boiler Combi Manual
You Will Need:
• Philips head screwdriver
1. Remove the boiler’s front panel by removing the four screws that secure the panel.
3. Conrm whether all heat emiers and pumps are
connected to the piping system.
4. Fill the boiler to a minimum of 20 PSI (138 kPa) water
pressure and a maximum of 30 PSI (207 kPa).
5. The deaeraon process takes approximately 15 minutes
for compleon.
Aer 15 minutes, the display will show “End” (see right
image). The commissioning process is complete.
6. On the PC Board, press the black buon again to resume
normal operaon mode.
7. Operate the domesc hot water or central heang to
ensure the boiler operates properly.
8. Close the air vent on the pump. Aer approximately one
week, all air in the system should be eliminated via the air
separator in the piping system.
DIP Switches
PC Board
Note: Alternately, on inial installaon, you may press and hold the
DHW buon then simultaneously press the CH buon on the control
panel instead of removing the boiler’s front panel.
2. On the PC Board, press and hold the top, le black buon shown below. The Maintenance
Required icon (see right image) on the controller display will appear.