Bypass Deaeration - Rinnai I Series Installation And Operation Manual

Deaeration is an effective method of purging air from the boiler after the system has been filled or
serviced. While the boiler is running the deaeration process, the Maintenance Required icon
(see right image) appears on the controller display.
Do not bypass deaeration during commissioning or if the system pressure has dropped
below 13 PSI (90 kPa). If there is any chance that air has entered the system, deaeration is critical
to prevent damage to the boiler.
WARNING
DO NOT bypass the deaeration program during commissioning or if any part of the system has
been opened or disconnected. Failure to properly deaerate the boiler and system may result in
damage to the boiler, which is not covered by the boiler warranty.
To initiate or end the deaeration process, press and hold the top, left black button on the PC Board
(shown below).
PC Board
Rinnai I-Series Condensing Boiler Combi Manual
DIP Switches
67