Forced Hi/Low Fire Modes - Rinnai I Series Installation And Operation Manual

This section should be performed by a licensed professional. Consumers
WARNING
should never attempt any action that they are not qualified to perform.
1. Remove the boiler's front panel by removing the four screws that secure the panel.
2. Locate the PC Board (lower left side of unit).
3. Press and hold the right-side, black button.
PC Board
4. The controller displays FL (the boiler is now
in forced low fire condition).
5. Press the right-side, black button again. The
controller now displays FH (the boiler is now
in forced high condition).
6. To enter back into normal operation, press the right-side, black button. The controller now
displays normal operation mode.
Rinnai I-Series Condensing Boiler Combi Manual
DIP Switches
fL
fH
Button
105