Evco EPN2LXP - Measurements; 4.1 Controller and user interface measurements; 4.1.1 c-pro 3 nano CHILL control module measurements

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