When BI1 and BI2 are configured for an alarm condition, an alarm condition is displayed locally when the input is closed. An alarm message is included on the scrolling Status Display Menu and when the message is displayed, the backlight momentarily lights up.
The UI3 input provides changeover of hot/cold water switching or supply air temperature monitoring at the thermostat controller.
Each input can be configured to the selection options included in Table 1.