Viessmann Vitocal 222-A - Index

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1. Information Disposal of packaging ............................................................................ 6
Symbols ................................................................................................. 6
Intended use .......................................................................................... 6
Product information ................................................................................ 7
2. Preparing for installation Requirements for on-site connections ................................................... 9
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Indoor unit ........................................................................................... 9
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Outdoor unit ........................................................................................ 10
3. Installation sequence Installing the outdoor unit ....................................................................... 12
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Installation information ........................................................................ 12
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Installation location ............................................................................. 13
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Outdoor unit minimum clearances ...................................................... 14
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Transport and siting ............................................................................ 15
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Floorstanding installation .................................................................... 15
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Wall mounting ..................................................................................... 19
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Opening the wiring chamber ............................................................... 21
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Removing the transport brackets ........................................................ 22
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Connecting the supplied hoses .......................................................... 23
Installing the indoor unit ......................................................................... 23
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Transport ............................................................................................ 23
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Requirements for the installation room ............................................... 24
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Minimum clearances ........................................................................... 24
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Minimum room height ......................................................................... 25
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Pressure points ................................................................................... 25
Connecting the secondary circuit ........................................................... 26
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Preparing connections on the heating water side ............................... 26
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Preparing the connections on the DHW side ...................................... 26
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Connecting the secondary side .......................................................... 27
Aligning the indoor unit .......................................................................... 29
Type AWOT(-M)-E-AC only: Connecting the cooling circuit .................. 29
Removing the front panels ..................................................................... 30
Electrical connection .............................................................................. 31
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Preparing the electrical connections ................................................... 31
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Indoor unit: Routing cables to the wiring chamber ............................. 32
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Connecting the Vitoconnect (accessories) ......................................... 33
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Indoor unit: Overview of connections ................................................. 35
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Indoor unit: Main PCB (230 V~ components) ..................................... 36
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Indoor unit: Expansion PCB on main PCB (230 V~ components) ...... 38
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Indoor unit: Luster terminals (signal and safety connections) ............ 40
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Indoor unit: Controller and sensor PCB (LV connections) .................. 41
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Outdoor unit: Routing cables to the wiring chamber ........................... 43
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Outdoor unit: Overview of electrical connections ............................... 44
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Connecting Modbus cable between indoor unit and outdoor unit ....... 45
Power supply ......................................................................................... 46
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Heat pump control unit power supply 230 V~ ..................................... 47
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Outdoor unit power supply .................................................................. 47
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Instantaneous heating water heater power supply ............................. 50
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Power supply with power-OFF: Without on-site load disconnection ... 51
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Power supply with power-OFF: With on-site load disconnection ........ 52
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Mains power supply in conjunction with on-site power consumption . 54
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Smart Grid .......................................................................................... 54
Closing the heat pump ........................................................................... 56
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Fitting the front panels of the indoor unit ............................................ 56
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Fitting the side cover for the outdoor unit ........................................... 57
4. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 58
5. Maintenance Overview of electrical components ........................................................ 79
Index
Index
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