Viessmann VITOCAL 242-S Installation And Service Instructions Manual page 157

Keyword index
Compensating vibrations...................27
Compressor...........................93, 94, 95
Compressor max. tilting angle...........13
Concrete foundations.........................15
Condensate drain.........................10, 15
Condensate pan.................................10
Connecting a cooling circuit...............38
Connecting cable, internal/external
unit...................................39, 41, 51, 53
Connecting cables...............................9
– Function components 230 V~.........41
– Low voltage....................................41
Connecting the DHW side..................37
Connecting the secondary circuit.......36
Connection
– BUS cable.......................................51
– Cooling circuit.................................38
– DHW...............................................37
– Electrical components....................38
– Overview...........................................7
– Preparing..........................................8
– Refrigerant lines.............................24
– Secondary circuit......................34, 36
– Solar circuit.....................................38
Connection, internal/external unit......51
Connection conditions........................54
– Power supply utility.........................59
Connection values
– 230 V~ function components..........43
– Circulation pumps.....................43, 46
– DHW circulation pump....................45
– Function components 230 V~.........46
– Heating circuit pump.......................44
– Solar circuit pump...........................45
Contact humidistat.......................38, 48
Contact humidistat connection...........48
Controller and sensor PCB..........43, 48
Control parameters reports..............135
Cooling...............................................44
Cooling control...................................44
Cooling water flow..............................38
Copper seal ring.................................33
Corrosion damage.......................74, 75
(cont.)
Cover of external unit, mounting........62
Curve
– Temperature sensor, type Pt500A..98
– Temperature sensor type NTC 10
kΩ.............................................97, 99
– Temperature sensor type NTC 20
kΩ...................................................98
– Temperature sensor type NTC 50
kΩ...................................................99
Curves of the sensors........................96
Cylinder
– Drain & fill valve..............................92
Cylinder, cleaning..............................73
Cylinder module, fitting......................23
Cylinder module removal...................17
Cylinder temperature sensor......91, 106
D
Data.........................................145, 149
Declaration of conformity.................155
Defrosting...........................................11
DHW circulation connection.8, 149, 153
DHW circulation pump.................37, 82
– Connection.....................................45
DHW connection..............7, 8, 149, 153
DHW cylinder/heating water flow.......34
DHW cylinder assembly
– Internal unit...................................111
Diaphragm grommet....................23, 36
Dimensions..........................................7
– External unit..........................148, 153
– Internal unit...........................148, 153
Directives for work on the refrigerant cir-
cuit.....................................................71
Diverter valve.........................93, 94, 95
Door, opening....................................34
Drain & fill valve.................................92
Drain & fill valve, DHW cylinder.........91
Drain & fill valve, secondary circuit....91
Draining secondary circuit..................96
Drain valve.........................................37
Drinking water filter............................37
Keyword index
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