Random Restart
The start-up condition for the di erent 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 e ective in the Class 2 mode.
Random Restart for AZ4500 Series
Cool Mode
Heat Mode
Stop Mode
Compressor
Run
Power
Down
Fan
Stop
Operation
Electric Heat
Operation
Stop
Stop
Power
Down
– 18 –
Compressor
Run
3 mins.
Power
Recovered
Range
Fan
Operation
Electric Heat
Operation
Range
Power
Recovered
Stop
Power Recovered
(Continued next page)
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