Daikin UATYA-B, Руководство по эксплуатации

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Service manual Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
3.10 Power supply control 47
3.10.1 Phase sequence
47
3.10.2 Min. / Max. voltage
47
3.10.3 Fast Restart
47
3.11 Circuits and compressors 49
3.11.1 Starting and stopping of the compressors 49
3.11.2 Management of compressor with inverter 50
3.11.3 Capacity reduction override 52
3.12 Circuits and compressors - Functions 55
3.12.1 Oil return for compressors managed with inverter
55
3.13 Damper management 56
3.13.1 Damper control 58
3.13.2 Damper management 58
3.13.3 Unit start-up 58
3.13.4 Washing 58
3.13.5 Recirculation 59
3.13.6 Free cooling 59
3.13.7 Free heating 61
3.13.8 Enthalpy-based free cooling and free heating 63
3.13.9 Air change in the room 64
3.13.10 Co
2
control 64
3.13.11 VOC control 65
3.14 Limitation of damper operation 66
3.14.1 Limitation based on condensing pressure in heating mode
66
3.14.2 Limitation based on evaporating pressure in cooling mode
68
3.14.3 Limitation based on evaporating pressure in heating mode
68
3.14.4 Limitation based on condensing pressure in heating mode
69
3.14.5 Min. opening in relation to external air temperature
70
3.14.6 Min. opening in connection with dehumidification
70
3.14.7 Management of external air damper during defrosting
70
3.15 Source-side ventilation 71
3.15.1 Condensation control 71
3.15.2 Night Shift System function 73
3.15.3 Evaporation control 74
3.16 Auxiliary heating 76
3.16.1 Controlled devices
77
3.16.2 Post heating
78
3.16.3 Single source for winter heating
78
3.16.4 Auxiliary heating and heating by refrigerant circuit
76
3.16.5 Auxiliary heating in both winter and summer operation
78
3.17 Defrosting 79
3.17.1 Simultaneous or separate defrost 80
3.17.2 Check of conditions for the defrost cycle at fixed evaporating temperature 80
3.17.3 Preparation for cycle reversal 80
3.17.4 Refrigeration cycle reversal and defrost 81
3.17.5 Forcing of a defrost cycle 81
3.17.6 Management of auxiliary heating during defrost cycle 82
3.17.7 Special management logics during defrosting 82
3.18 Other functions 83
Contents