5
Indoor unit: Opening the programming unit ........................................... 79
Indoor unit: Placing the control unit panel in its service position ........... 80
Overview of internal components: Indoor unit ....................................... 81
Overview of internal components: Outdoor unit ..................................... 82
Outdoor units, types 221.A04 to A08 .................................................. 83
Outdoor units, types 221.A10 to A16 .................................................. 84
Connection to the indoor unit .............................................................. 85
Connection to the outdoor unit ........................................................... 86
Indoor unit: Viessmann NTC 10 k
(blue marking) ............................ 87
Indoor unit: Viessmann NTC 20 k
(orange marking) ........................ 88
Indoor unit: Viessmann Pt500A (green marking) ................................ 89
Outdoor unit: Viessmann NTC 10 k
(no marking) ............................ 90
Overview of indoor unit assemblies ....................................................... 93
Indoor unit casing .................................................................................. 94
Indoor unit electrical equipment ............................................................. 96
Hydraulics, indoor unit ........................................................................... 98
Indoor unit DHW cylinder .......................................................................100
Miscellaneous ........................................................................................ 102
Overview of assemblies, outdoor unit 230 V~ ....................................... 105
Outdoor unit casing 230 V~ ................................................................... 106
Outdoor unit refrigerant circuit 230 V~ ...................................................108
Outdoor unit electrical equipment 230 V~ ............................................. 110
Overview of assemblies, outdoor unit 230 V~ ....................................... 113
Outdoor unit casing 230 V~ ................................................................... 114
Outdoor unit refrigerant circuit 230 V~ ................................................... 116
Outdoor unit electrical equipment 230 V~ ............................................. 118
Overview of assemblies, outdoor unit 400 V~ ....................................... 121
Outdoor unit casing 400 V~ ................................................................... 122
Outdoor unit refrigerant circuit 400 V~ ...................................................124
Outdoor unit electrical equipment 400 V~ ............................................. 126
Index
Index
(cont.)
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