EVCO S.p.A.
c-pro 3
nano CHILL
| Application manual ver. 3.0 | Code 144CP3NCE304
page 4 of 96
8.7
Compressor Management ................................................................................................................... 55
8.7.1
Compressor State ................................................................................................................. 55
8.7.2
Compressor Rotation............................................................................................................. 56
8.7.3
Pump-down Switch-off Procedure ........................................................................................... 56
8.7.4
Relative Pump-down Threshold .............................................................................................. 57
8.7.5
Protection Periods ................................................................................................................. 57
8.7.6
Thermal switch Inputs ........................................................................................................... 58
8.8
Management liquid injection to the compressor ..................................................................................... 58
8.9
Condenser Control ............................................................................................................................ 58
8.9.1
Modulating Fan Control ......................................................................................................... 58
8.9.2
Mono phase Fan Control ........................................................................................................ 61
8.9.3
Condenser Valve Control ....................................................................................................... 61
8.9.4
Single Condenser ................................................................................................................. 61
8.10 Fan Management .............................................................................................................................. 62
8.10.1
Fan Mode ............................................................................................................................ 62
8.10.2
Fan Periods .......................................................................................................................... 62
8.10.3
Thermal Switch Inputs .......................................................................................................... 62
8.11 Circulation Pump Management ............................................................................................................ 63
8.11.1
Pump Mode .......................................................................................................................... 63
8.11.2
Flowmeter Management ........................................................................................................ 64
8.12 Circulation Source Pump Management ................................................................................................. 64
8.13 Defrost Management ......................................................................................................................... 64
8.13.1
Defrost Cycle Compensation .................................................................................................. 65
8.14 Anti-Freeze/Auxiliary Heating Heaters Management............................................................................... 65
8.15 Single Evaporation ............................................................................................................................ 66
8.16 Free-cooling Management .................................................................................................................. 66
8.16.1
Free-cooling Enablement ....................................................................................................... 66
8.16.2
Free cooling Regulation ......................................................................................................... 66
8.16.3
Free-cooling Regulation Valve ................................................................................................ 68
8.17 Temperature Alarm Check .................................................................................................................. 69
8.17.1
High and Low Temperature Alarm Management ........................................................................ 69
8.17.2
Management of the primary exchanger efficiency alarm ............................................................ 69
8.18 Pressure Alarm Control ...................................................................................................................... 69
8.18.1
High pressure switch alarm management ................................................................................ 69
8.18.2
High-pressure transducer management ................................................................................... 69
8.18.3
Low pressure switch alarm management (chiller mode) ............................................................. 69
8.18.4
Low pressure transducer alarm management (heat pump mode) ................................................ 70
8.18.5
Low pressure start alarm ....................................................................................................... 70
8.19 Water level alarm .............................................................................................................................. 71
8.20 Phases sequence alarm ...................................................................................................................... 71
8.21 Time Schedule .................................................................................................................................. 72
8.22 Management of Other Parameters ....................................................................................................... 73
8.22.1
Variation of setpoint with timer scheduler ................................................................................ 73
8.22.2
Dynamic setpoint.................................................................................................................. 73
8.22.3
Forced Switch-off ................................................................................................................. 74
8.22.4
High pressure reduction at high temperatures (chiller) .............................................................. 74
8.22.5
Low pressure parcelling at low temperatures (heat pump) ......................................................... 74
8.22.6
Operating limit management (heat pump) ............................................................................... 75
8.22.7
Cooling/Heating Function by Request ...................................................................................... 76
