High Temperature Vent Setting Instructions - Rinnai I Series Installation And Operation Manual

WARNING
installations using CPVC, listed Polypropylene, or stainless steel venting. If these instructions are
not followed exactly, a fire or carbon monoxide leak may result causing property damage,
personal injury, or death.
DO NOT adjust boiler settings to allow higher exhaust temperatures when venting with PVC.
This product is equipped with safety devices to control the exhaust temperature which allows for a
variety of venting materials to be used in its final installation. The boiler is set up from the factory to
be installed with a PVC venting system and a built-in control to limit the exhaust temperature to be
below 149°F (65°C). In high temperature applications where the exhaust temperature can exceed
149°F (65°C), CPVC, listed Polypropylene (PP), or stainless steel venting must be used. The choice of
venting 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 settings.
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). Locate the DIP switches on the PC Board (see below).
3. Adjust DIP switch 8 to the ON position.
PC Board
4. On the PC Board, press and hold the red button for five seconds
Rinnai I-Series Condensing Boiler Combi Manual
The instructions in this section explain how to adjust boiler settings to
allow for higher exhaust temperatures. These instructions apply only for
DIP Switches
Press and Hold
Red Button
for Five Seconds
ON
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