Evco c-pro nano CHIL Bedienungsanleitung PDF herunterladen (Seite 4)

C-PRO NANO CHIL AND C-PRO MICRO CHIL – APPLICATION MANUAL

Pag. 4

6.2.5 Single-circuit motocondensing water-based units................................................................................87

6.2.6 Twin-circuit air-to-air units.................................................................................................................. 88

6.2.7 Twin-circuit air-to-water units ............................................................................................................. 90

6.2.8 Twin-circuit water-to-water units......................................................................................................... 92

6.2.9 Twin-circuit motocondensing air-based units ...................................................................................... 94

6.2.10 Twin-circuit motocondensing water-based units.................................................................................. 96

6.3 Configuration of Circuits............................................................................................................................... 98

6.4 Operating Mode Control................................................................................................................................ 99

6.4.1 Heat-pump-only mode .......................................................................................................................100

6.4.2 Geothermal heat pumps......................................................................................................................100

6.5 Compressor Regulation ...............................................................................................................................101

6.5.1 Lateral-band (LB) regulation ............................................................................................................101

6.5.2 Neutral-zone (NZ) regulation.............................................................................................................102

6.5.3 Compressor activation from digital input........................................................................................... 103

6.6 Compressor Management ............................................................................................................................104

6.6.1 Compressor statuses........................................................................................................................... 104

6.6.2 Rotation of compressors..................................................................................................................... 104

6.6.3 Pump-down switch-OFF procedure ................................................................................................... 105

6.6.4 Relative-threshold pump-down.......................................................................................................... 105

6.6.5 Protection timings ..............................................................................................................................106

6.6.6 Thermal protection inputs ..................................................................................................................107

6.7 Condensation Regulation............................................................................................................................. 108

6.7.1 Fan linear regulation ..........................................................................................................................108

6.7.2 Condensing valve regulation.............................................................................................................. 110

6.7.3 Condensing fan pre-start at high external temperatures ..................................................................... 110

6.7.4 Single condensation ...........................................................................................................................110

6.8 Fan Management .........................................................................................................................................111

6.8.1 Fan status ...........................................................................................................................................111

6.8.2 Fan timings.........................................................................................................................................111

6.8.3 Thermal Protection Inputs.................................................................................................................. 111

6.9 Circulating Pump Management ...................................................................................................................112

6.9.1 Pump Status........................................................................................................................................113

6.10 Internal Fan Management............................................................................................................................113

6.10.1 Hot-start function ............................................................................................................................... 113

6.10.2 Recirculating fan status...................................................................................................................... 114

6.11 Flow Meter Management............................................................................................................................. 114

6.12 Defrosting Management ..............................................................................................................................116

6.12.1 Defrosting management via external contact ..................................................................................... 117

6.12.2 Defrosting cycle compensation.......................................................................................................... 117

6.12.3 Defrosting heating coil....................................................................................................................... 118

6.13 Anti-frost management / Chilling-support heating coils..............................................................................118

6.14 Free-Cooling Management ..........................................................................................................................119

6.14.1 Free-Cooling Enable .......................................................................................................................... 119

6.14.2 Free-cooling regulation ...................................................................................................................... 119

6.14.3 Free-cooling control valves................................................................................................................ 121

6.15 Temperature Alarm Control ........................................................................................................................122

6.15.1 Low and high temperature alarm management .................................................................................. 122

6.15.2 Management of primary exchanger efficiency alarm.........................................................................122

6.16 Pressure Alarm Control ...............................................................................................................................123

6.16.1 Management of high-pressure pressure-switch alarm........................................................................ 123

6.16.2 Management of high-pressure transducer alarm ................................................................................ 123

6.16.3 Management of low-pressure pressure-switch alarm (chiller mode) ................................................. 123

6.16.4 Management of low-pressure transducer alarm (heat pump mode) ................................................... 123

6.16.5 Low start-up pressure alarm............................................................................................................... 124

6.17 Miscellaneous Management ........................................................................................................................125

6.17.1 Set point variation .............................................................................................................................. 125

6.17.2 External probe configuration (AI04 / AI05).......................................................................................125

6.17.3 Evaporation-probe configuration ....................................................................................................... 126

6.17.4 Dynamic set point .............................................................................................................................. 126

6.17.5 Forced shutdown................................................................................................................................ 127

6.17.6 Power limiting.................................................................................................................................... 128

6.17.7 High-pressure partialisation at high temperatures (chiller) ................................................................ 128

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