Auto-Zone Plus Section 4
Start-Up and Troubleshooting 4-25
the user requires the system to re-calibrate the Pressure Sensor, check the Auto-Zone Plus
manual for keypad operations to perform this calibration.
The bypass damper always drives to its OPEN position first and then to its CLOSED
position. If your damper appears to be operating in reverse you may need to select
Reverse Acting damper operation from the Configuration menu. (See Section 3)
2.1.3 Operating Summary
There is a standard set of operating instructions that are continuously performed over and
over during normal Zone Manager operations. They are listed below.
a. Update Time & Date on LC Display (Basic systems)
b. Read analog inputs for temperatures, pressures and binary contact closures
c. Poll all the configured zones and save all the temperatures and setpoints
d. Broadcast the operating commands and temperatures to the zones
e. Calculate Occupied/Unoccupied mode of operation
f. Calculate HVAC mode of operation
g. Set all outputs to match calculations for heating, cooling, or vent mode
h. Keep alarms and mode of operation updated on LC Display
i. Store data in internal trend log if ready for another log
j. Repeat steps a - i continuously
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