19 FREE COOLING CONTROL................................................................................................................................................................ 35
19.2 FREE COOLING ACTIVATION CONDITION ............................................................................................................................................... 35
19.3 FREE COOLING THERMOSTAT............................................................................................................................................................... 36
19.4 FREE COOLING DISABLING CONDITIONS................................................................................................................................................ 37
19.5 FREE COOLING ON/OFF VALVE .......................................................................................................................................................... 37
19.6 FREE COOLING ON/OFF VALVE WITH STEPPED CONDENSATION ........................................................................................................... 38
19.7 FREE COOLING ON/OFF VALVE WITH INVERTER CONTROLLED CONDENSATION ................................................................................... 39
19.8 0-10 VOLT FREE COOLING ON/OFF VALVE ........................................................................................................................................ 40
19.9 0-10 VOLT FREE COOLING ON/OFF VALVE WITH STEPPED CONDENSATION ......................................................................................... 40
19.10 0-10 VOLT FREE COOLING VALVE WITH INVERTER CONTROLLED CONDENSATION................................................................................. 41
20 ALARMS .................................................................................................................................................................................................. 43
20.1 SERIOUS ALARMS................................................................................................................................................................................. 43
20.2 CIRCUIT ALARMS ................................................................................................................................................................................. 43
20.3 WARNING ONLY ALARMS ..................................................................................................................................................................... 43
20.4 PRESSURE DIFFERENTIAL ALARM MANAGEMENT................................................................................................................................... 43
20.5 ANTIFREEZE CONTROL ......................................................................................................................................................................... 44
20.6 PCO ALARMS TABLE............................................................................................................................................................................ 45
20.7 DRIVER CARD ALARMS......................................................................................................................................................................... 45
21 ALARM LOG........................................................................................................................................................................................... 46
21.1 STANDARD LOG ................................................................................................................................................................................... 46
21.2 ADVANCED LOG................................................................................................................................................................................... 46
21.3 LIST OF ALARM LOG CODES .................................................................................................................................................................. 47
21.4 SHORT SUMMARY OF ALARMS COMING FROM DRIVER ........................................................................................................................... 48
22 SUPERVISOR.......................................................................................................................................................................................... 49
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