Operation of the heating system is automatic. Operational function settings are stored in a microprocessor on the processor control board. These settings are modified, If necessary, through the Configuration Menu. In most applications, the system is configured upon installation and no further changes are required.
Four-Digit Lighted Display
The four-digit LED displays specific operating information. During the configuration process, the configuration number and the values set in these configurations are displayed for viewing and adjusting purposes.
AM and PM Indicator Lights
The AM and PM indicator lights are only utilized if the time clock module is being installed and using 12 hour time display. With this module installed, the system displays time on AM/PM intervals. The light flashes next to the active designator/symbol. The system can be configured to display military time, in which case both the AM and PM lights illuminate.
Mode (EDIT) Button
Used to access menus on the system (i.e. Help menu or Configuration Menu) and to allow modifying of configuration settings.
Up 
and 
Down Arrow Buttons
Used to scroll up or down when viewing or modifying the heater's operating functions.
Interface Port
Allows technician external access for advanced operating modes, updating software, and/or troubleshooting.
IMPORTANT: Editing configuration information may alter the performance and operation of the heater.