In the 01CB30 control board (double stacked boards) there are multiple settings and wiring configurations, which can change priority and staging of the hot water heating function for combination units. Many contractors have different applications for the units, so there are many ways to setup these units. All of the possible combinations of hot water heating in the combination units will be explained in more detail throughout this tech bulletin.
Attachments
TB08.002 HW Stages REV2 - 338 kB