Viessmann VITOCAL 242-S Installation And Service Instructions Manual page 159

Keyword index
Flow temperature sensor, system48, 96
Free running of the fan, check for......75
Freestanding siting.............................10
Frost stat connection..........................48
Function check...................................87
Function components 230 V~............41
Function components 230 V~......43, 46
Fuse
– AVI PCB...................................43, 51
– F1...................................................99
– F101...............................................99
– F3...................................................99
– Function components 230 V~.........43
– Heat pump control unit...................43
– Max. power loss..............................99
Fuse, checking...................................99
Fuse protection
– Power supply, external unit......56, 57
Fuse rating
– Power supply for instantaneous heat-
ing water heater..............................58
G
Gravel bed
– As condensate drain.......................15
H
Handling.......................................13, 16
Heat exchanger cleaning...................75
Heating circuit pump..........................82
– Connection.....................................44
Heating output, compressor...............80
Heating water flow. . .8, 34, 35, 149, 153
Heating water return 8, 34, 35, 149, 153
Heat pump, starting............................77
Heat pump control unit power cable....9
Heat transfer medium........................73
Height differential
– Internal unit-external unit................25
High limit safety cut-out
– Connection.....................................45
– Solar circuit.....................................45
High limit safety cut-out, resetting......87
(cont.)
High pressure fault.............................11
High pressure switch....................93, 94
Hot gas line........8, 28, 30, 67, 149, 153
– Internal unit.....................................33
– Torque............................................29
Hydraulic assembly
– Internal unit...................................108
Hydraulic connecting chamber...........37
Hydraulic connections..........................8
Hydraulic parameters.......................135
Hydraulic parts
– Internal unit...................................108
I
Impressed current anode...................75
Insolation............................................11
Inspection...........................................65
Installation
– External unit....................................10
– Internal unit.....................................15
Installation, external unit
– Bracket set for wall mounting.........10
– Supports for floorstanding installa-
tion..................................................10
Installation information.......................10
Installation location requirements
– Internal unit.....................................15
Installation site, external unit..............11
Instantaneous heating water
heater.....................................59, 60, 91
– High limit safety cut-out, resetting. .87
– Parameters.....................................85
– Power cable......................................9
– Power supply..................................58
– Specification.........................147, 151
Instructing the system user................87
Integral loading cylinder...........148, 152
Interface internal unit – external unit..51
Internal/external unit connecting
cable..............................................9, 52
Internal components....................90, 92
Keyword index
159