– 18 –
The start-up condition for the diȺerent modes is shown in the following two ¿gures. This function allows for
the random restart of Zonelines in a building in the event of a power outage. The restart delay will reduce
the initial inrush current from the building to help prevent a second power outage of inde¿nite length. The
controls will revert to settings established prior to the outage.
The Random Restart function is eȺective in the Class 2 mode.
Random Restart for AZ4500 Series
Random Restart
Cool Mode
Heat Mode
Stop Mode
Compressor
Run
Power
Down
Power
Down
3 mins.
Power
Recovered
Range
Stop
Fan
Operation
Electric Heat
Operation
Power Recovered
Compressor
Run
Fan
Operation
Electric Heat
Operation
Range
Power
Recovered
Stop
StopStop
(Continued next page)