Viessmann Vitocal 252-A Series - Page 10

10
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Preparing the hydraulic connections .................................................. 54
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Temperature limiter ............................................................................. 57
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Contact humidistat .............................................................................. 58
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Operation without outdoor unit ........................................................... 58
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Aligning the indoor unit ....................................................................... 60
6. Electrical connections Preparing the electrical connections ...................................................... 61
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Cable lengths in the indoor unit .......................................................... 61
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Recommended power cables ............................................................. 61
Electrical connection of the indoor unit .................................................. 62
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Indoor unit: Removing the front panels ............................................... 62
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Relocating the ON/OFF switch ........................................................... 63
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Overview of electrical terminal areas .................................................. 64
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Opening electrical terminal areas ....................................................... 64
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Indoor unit: Routing cables to the terminal area ................................. 66
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Notes regarding the connection values .............................................. 67
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Extra low voltage (ELV) terminal area < 42 V ..................................... 68
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Terminal area 230 V~/400 V~ ............................................................. 71
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HPMU electronics module: Accessory 230 V~ and BUS connection . 75
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Connecting with other Viessmann appliances via the CAN bus ......... 77
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Connecting the energy meter ............................................................. 78
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Fitting the programming unit ............................................................... 79
Electrical connection of the outdoor unit ................................................ 80
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Cable routing to the terminal area ...................................................... 80
Indoor/outdoor unit CAN bus communication cable (accessories) ........ 82
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Recommended cable .......................................................................... 83
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Terminator ........................................................................................... 83
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Connecting the CAN bus cable .......................................................... 83
Power supply ......................................................................................... 87
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Only types ... SP: Heat pumps with central power supply on the
indoor unit ........................................................................................... 88
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Indoor unit: Heat pump control unit power supply 230 V~ .................. 88
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Indoor unit: Instantaneous heating water heater power supply
230 V~/400 V~ .................................................................................... 89
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Outdoor unit: Compressor power supply 230 V~/400 V~ ................... 92
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Power supply with power-OFF: Without on-site load disconnect ....... 93
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Mains power supply in conjunction with self-consumption ................. 93
Closing the indoor unit ........................................................................... 93
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Indoor unit: Fitting the front panel ....................................................... 93
Closing the outdoor unit ......................................................................... 94
7. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 95
8. System configuration and
diagnostics
Service menu .........................................................................................128
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Calling up the service menu ............................................................... 128
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Service menu overview ...................................................................... 128
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Changing the service password ......................................................... 128
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Resetting all passwords to delivered condition ...................................129
System configuration ............................................................................. 129
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Setting parameters on the HMI programming unit ..............................129
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Parameter ........................................................................................... 130
Diagnostics ............................................................................................ 130
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Checking operating data .....................................................................130
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Refrigerant circuit ............................................................................... 130
Checking subscribers ............................................................................ 132
Switching access point on/off ................................................................ 132
Checking outputs (actuator test) ............................................................132
9. Troubleshooting Message display on the programming unit ............................................ 135
Index
Index
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