Stulz C2020 - Page 4

EN/07.2013/58/4
4.5. Emergency ventilation management .........................................................................................................49
4.6. Manual control ........................................................................................................................................... 49
4.7. Automatic lead lag management (master-slave) ....................................................................................... 51
4.8. Sequencing ...............................................................................................................................................53
4.8.1.General description ............................................................................................................................53
4.8.2.System installing instruction ...............................................................................................................54
4.8.3.Sequencing with stand-by management mode ..................................................................................54
4.8.4.Lead lag management........................................................................................................................55
4.8.5.Cooling without freecooling conditions ...............................................................................................55
4.8.6.Cooling with freecooling conditions ....................................................................................................56
4.8.7.Heating ............................................................................................................................................... 57
4.8.8.Dehumidification with humidity switch ................................................................................................58
4.8.9.Dehumidification with humidity probe .................................................................................................58
4.8.10.Humidification ...................................................................................................................................58
4.8.11.Visualization .....................................................................................................................................59
4.9. Condenser fan speed management ..........................................................................................................60
4.9.1.Night mode ......................................................................................................................................... 61
4.9.2.Bypass of Condenser Fan Speed limitation .......................................................................................61
4.9.3.Triac Control .......................................................................................................................................61
4.9.4.Maximum EER function ......................................................................................................................61
4.10. Evaporator fan speed management ........................................................................................................62
4.11. Control under high external/internal temperature .................................................................................... 63
4.12. Hot start function .....................................................................................................................................63
4.13. Control under high tc (or pc) (adaptive control) ....................................................................................... 63
4.14. Soft control ..............................................................................................................................................64
4.15. Split air unit ..............................................................................................................................................64
4.16. Offset correction ......................................................................................................................................65
4.17. Locked keypad ........................................................................................................................................65
5. Alarms .............................................................................................................................................................66
6. Supervision by .................................................................................................................................................70
6.1. PEMS Protocol (PE) .................................................................................................................................. 70
6.2. Stulz Protocol ............................................................................................................................................70
6.3. Modbus Stulz protocol ............................................................................................................................... 71
6.4. Modbus standard protocol ......................................................................................................................... 71
6.5. SAIA-BUS Protocol ...................................................................................................................................83
6.6. SNMP Communication ..............................................................................................................................83
6.7. WEB Monitoring ........................................................................................................................................88