1 Service
General Operation
How the appliance operates
The
Access modes
User
The user can adjust space heating set point using the UP and DOWN buttons at any time during normal operation. By entering the USER code (0704), the user can also change temperature units, time and date, and night setback settings. In user mode, the following parameters can be viewed but not changed: Heater outlet water temperature in DHW mode; heater model number; software version; total operating hours, and total cycles.
Installer
How the control module operates
The
Sequence of operation
Table 1A shows control module normal sequences of operation for space heating and DHW operation. The combined operation sequence is for a typical application, programmed to provide DHW priority.
Most parameters are available only to the installer, accessible only by entering the installer access code (5309).
Saving parameters
To save parameters and exit programming:
Press the ENTER/RESET button, then the MENU/EXIT button 3 times.
To keep parameter settings only for a current operating cycle:
Press the MENU/EXIT button 3 times after making all desired parameter changes.
To enter a parameter and continue programming:
Press the MENU/EXIT button 1 time to return to the parameter listings; press again to return to the menu listings. Remember to press the ENTER/RESET button when finished programming in order to save the changes made.
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