Viessmann Vitocal 242-S Installation And Service Instructions Manual page 147

Keyword index
Installation scheme......................12, 14
Instantaneous heating water
heater...............................13, 65, 66, 97
■ High limit safety cut-out reset.........92
■ Parameter settings.........................90
■ Power cable......................................9
■ Power supply..................................64
■ Specification.................................138
Instructing the system user................93
Internal/external unit connecting
cable........................................9, 58, 59
Internal/external unit interface............58
Internal components....................96, 98
Internal unit
■ Cable lengths....................................9
■ Dimensions...............................7, 139
■ Electrical values............................138
■ Internal components.......................96
■ Refrigerant lines.............................36
■ Service valve..................................97
■ Weight..........................................139
Internal unit, isolating.........................25
Internal unit, opening.........................25
Internal unit installation......................23
Isolators.............................................61
K
Key to system examples....................11
KM BUS distributor......................13, 56
L
Leak detection spray..........................72
Lightning protection............................19
Line length
■ For refrigerant lines........................75
■ Refrigerant lines.....................33, 140
Liquid line.......8, 13, 33, 35, 37, 73, 140
■ Torque......................................36, 40
Liquid separator.................99, 100, 101
Luster terminals...........................50, 53
LV leads.......................................46, 48
(cont.)
M
Magnesium anode.......................80, 81
Magnesium anode, replacing.............81
Main PCB...........................................50
Mains isolator.....................................67
Maintenance......................................71
Maximum temperature limiter............52
Measuring magnesium anode resist-
ance.............................................80, 81
Message connections........................53
Minimum clearances
■ External unit....................................21
■ Internal unit.....................................24
Minimum flow rate..............................43
Minimum room volume.......................24
Minimum system pressure.................78
Mixer extension kit.............................53
Multi connect system...........................8
N
Non-return valve....................44, 77, 97
NTC curve........................................105
O
Oil lift bend.........................................33
Oil lift bends.......................................34
ON/OFF switch..................................84
On-site connections.............................7
Opening for 230 V cables....................8
Opening for LV leads...........................7
Opening programming unit................94
Opening the heat pump.....................71
Opening the internal unit....................25
Operating pressure............................78
Operator's log....................................76
Output compressor stage...................86
Output data, heating........................136
Outside temperature sensor......13, 102
Keyword index
147