Viessmann Vitocal 252-A Series - Page 205

205
A
Access point...............................................................97
– Switching on/off.....................................................132
Accumulator..................................................... 175, 176
Actuator test............................................................. 132
Air discharge.............................................................. 32
Air intake.................................................................... 32
Air intake temperature sensor.......................... 175, 176
Air short circuit........................................................... 29
Alignment................................................................... 60
Ambient temperatures................................................46
Angle of penetration................................................... 47
Anode earth current..................................................114
Anode tester............................................................. 114
Anti-vibration base............................................... 27, 35
Anti-vibration mounts................................................. 29
Appliance, draining on DHW side.............................114
Appliance fuse, checking................................. 153, 184
Appliance starting.......................................................97
Area cooling system...................................................58
Automatic thermostatic mixing valve..........................54
B
Ball valve with filter...................................................182
Bracket for wall mounting...........................................42
Bracket set........................................................... 27, 41
Brazing/soldering work.............................................166
Buffer cylinder.................................................. 140, 141
Buffer temperature sensor................................. 70, 151
BUS connection................................................... 77, 82
C
Cable length............................................................... 61
Cable routing..............................................................66
CAN bus communication cable................ 20, 21, 22, 82
CAN bus system........................................................ 77
Capacitor discharging.............................................. 167
Cellar shaft................................................................. 30
Certificate of competence........................................ 165
Checking
– Fuse.............................................................. 153, 184
– Pressure sensors.......................................... 153, 184
– Sensors......................................................... 151, 182
Checking functions...................................................132
Checklist, maintenance............................................ 165
Chilled ceiling............................................................. 58
Circulation pump head............................................. 150
Cleaning cylinder......................................................122
Cleaning the DHW cylinder...................................... 122
Coastal siting..............................................................28
Cold water............................................................ 55, 56
Commissioning...................................97, 112, 125, 201
Commissioning order............................................... 201
Commissioning report................................................ 96
Communication cable...........................................77, 82
Compressor..........................................23, 26, 175, 176
Condensate................................................................28
Condensate drain.............................20, 21, 22, 42, 121
– In seepage layer......................................................33
– Via drain pipe.......................................................... 32
– Via waste water system.......................................... 33
– Without drain pipe................................................... 32
Condenser........................................................175, 176
Condensing pressure............................................... 131
Connecting cables....................................38, 39, 40, 41
Connection
– Electric.................................................................... 61
– Electrical components............................................. 62
– Heating water side............................................ 53, 54
– Overview................................................................. 18
Connection, establishing
– Vitotrol................................................................... 106
Connection, indoor/outdoor unit................................. 82
Connection cables......................................................61
Connection conditions................................................87
Connection error...................................................... 135
Contact details of contractor.................................... 127
Contact humidistat............................................... 58, 70
Contractor................................................................ 127
Cooling water flow......................................................58
Corrosion..................................................................167
Crane......................................................................... 26
Credentials........................................................... 97, 99
Current sensor
– Connecting.............................................................. 78
Cylinder cleaning......................................................122
Cylinder temperature sensor....................................151
D
Decommissioning.....................................................201
Defrosting...................................................................29
Design casing.............................................................40
DHCP......................................................................... 47
DHW circulation pump............................................... 72
Digital input................................................................ 71
Digital inputs...............................................................71
Dimensions
– Indoor unit................................. 18, 19, 190, 195, 200
– Outdoor unit.......................................... 190, 194, 199
Disposal facility........................................................ 177
Diverter valve........................... 171, 172, 173, 175, 176
Domestic hot water.............................................. 55, 56
Drain for condensate..................................................42
Draining....................................................................179
Draining secondary circuit........................................141
Drain valve................................................................. 54
Drinking water filter.................................................... 54
Dynamic IP addressing.............................................. 47
E
Earth connection...................................................... 167
Economy tariff meter.................................................. 93
EHCU......................................................................... 66
EHCU electronics module.......................................... 66
– Removing.............................................................. 138
Electrical connection
– Routing cables........................................................ 66
Keyword index
Keyword index
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