Rinnai I-Series Condensing Boiler Combi Manual 23
4. On the PC Board, press and hold the red buon for ve seconds
1. Remove the boiler’s front panel by removing the four screws that secure the panel.
2. Locate the PC Board (lower le side of unit). Locate the DIP switches on the PC Board (see below).
3. Adjust DIP switch 8 to the ON posion.
DIP Switches
PC Board
ON
The instrucons in this secon explain how to adjust boiler sengs to
allow for higher exhaust temperatures. These instrucons apply only for
installaons using CPVC, listed Polypropylene, or stainless steel venng. If these instrucons are
not followed exactly, a re or carbon monoxide leak may result causing property damage,
personal injury, or death.
DO NOT adjust boiler sengs to allow higher exhaust temperatures when venng with PVC.
Press and Hold
Red Buon
for Five Seconds
This product is equipped with safety devices to control the exhaust temperature which allows for a
variety of venng materials to be used in its nal installaon. The boiler is set up from the factory to
be installed with a PVC venng system and a built-in control to limit the exhaust temperature to be
below 149°F (65°C). In high temperature applicaons where the exhaust temperature can exceed
149°F (65°C), CPVC, listed Polypropylene (PP), or stainless steel venng must be used. The choice of
venng materials may have an impact on overall performance. Also, If the vent material is other than
PVC (CPVC, listed PP or stainless steel) follow the procedure below to adjust the internal sengs.
WARNING