Viessmann Vitocal 242-S Installation And Service Instructions Manual page 133

Keyword index
(cont.)
Power cable....................................................... 8, 9, 42
– External unit.............................................................. 9
– Heat pump control unit............................................ 32
– Instantaneous heating water heater........................43
– Internal unit............................................................... 9
– Switching module, instantaneous heating water
heater...................................................................... 32
Power circuits.............................................................41
Power generated on site............................................ 63
Power-OFF.................................................9, 42, 43, 44
– Floating contact connection.................................... 36
– Power supply with load disconnect......................... 44
– Power supply without load disconnect.................... 44
Power-OFF signal................................................ 44, 47
Power supply
– Compressor.............................................................40
– External unit............................................................ 42
– General information.................................................41
– Heating water heat pump control unit..................... 37
– Heat pump control unit................................ 42, 44, 45
– Instantaneous heating water heater..................33, 43
– With load disconnect............................................... 44
Pre-charge pressure checking expansion vessel.......53
Premium tariff meter.............................................44, 45
Pressure, checking.....................................................54
Pressure check.......................................................... 49
Pressure gauge..........................................................29
Pressure gauge connection....................................... 30
Pressure gauge set.................................................... 51
Pressure reducer........................................................30
Pressure sensor......................................................... 68
Product information...................................................... 6
Protective gloves........................................................52
Pumps.................................................................. 67, 68
Q
Quick-action air vent valve................................... 29, 53
R
Radio clock receiver...................................................37
RCD........................................................................... 44
Recommended power cables.......................................9
Reducer, connecting.................................................. 27
Refrigerant..................................................... 22, 51, 52
– Properties................................................................52
– Safety instructions...................................................52
– Skin contact.............................................................51
Refrigerant charge..................................................... 52
Refrigerant circuit............................................. 121, 124
– Charging..................................................................51
– Evacuating.............................................................. 50
– Tightness test.......................................................... 52
Refrigerant lines
– Connecting.............................................................. 22
– Connection........................................................ 24, 25
– Fitting oil lift bends.................................................. 22
– Line lengths.......................................................22, 51
– Nuts, removing........................................................ 26
– Nuts, sliding on..................................................24, 27
– Purging....................................................................49
– Securing.................................................................. 26
– Undoing nuts........................................................... 24
Refrigerant properties................................................ 52
Remote control.....................................................38, 60
Removing programmining unit cover......................... 66
Repair work................................................................ 49
Replacing magnesium anode.....................................55
Reports............................................................. 112, 113
Reports, compiling..................................................... 49
Request for commissioning......................................127
Reset button...............................................................64
Residual current device..............................................41
Return temperature sensor, secondary circuit..... 67, 72
Return temperature sensor, solar circuit........ 38, 67, 81
Ribbon heater.............................................................10
Ripple control receiver......................................... 44, 45
Room height...............................................................14
Room temperature sensor......................................... 72
Room temperature sensor, cooling circuit..................38
Room volume............................................................. 14
Routing cables........................................................... 32
Rubber mounts.....................................................10, 13
S
Safety assembly.........................................................29
Safety chain............................................................... 37
Safety connections.....................................................36
Safety goggles........................................................... 52
Safety instructions, refrigerant................................... 52
Safety valve..........................................................29, 30
Sealing faces..............................................................21
Sealing surfaces.........................................................21
Sealing tape............................................................... 21
Seal rings, replacing.............................................29, 53
Secondary circuit
– Filling and venting................................................... 52
Secondary circuit, connecting.................................... 28
Secondary circuit, filling and venting..........................53
Secondary circuit connection..................................... 29
Secondary circuit connection set............................... 28
Secondary pump........................................................ 67
Sensors................................................................ 67, 68
Sensors, checking......................................................72
Service menu
– Activating.................................................................58
– Calling up................................................................ 58
– Deactivating............................................................ 58
Service termination.................................................... 58
Service valve
– External unit................................................ 50, 51, 52
– Internal unit............................................................. 68
Keyword index
133