Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 145

Keyword index
H
Heat exchanger cleaning...................82
Heating circuit pump..............13, 14, 88
Heating circuit with mixer...................13
Heating circuit with mixer M2.............13
Heating circuit without mixer A1.........14
Heating output, compressor...............87
Heating water buffer cylinder.............13
Heating water flow...........8, 41, 42, 139
Heating water return........8, 41, 42, 139
Heat pump, starting............................84
Heat pump control unit.......................13
■ Power cable......................................9
Height differential
■ Internal unit-external unit................33
High limit safety cut-out reset.............93
High pressure fault.............................18
High tariff meter...........................65, 66
Hot gas line....8, 13, 33, 35, 37, 73, 139
■ Torque......................................36, 40
Hydraulic assembly
■ External unit, type AWT-AC 221.A10
and A13........................................126
■ Internal unit...................................113
Hydraulic connecting chamber...........44
Hydraulic connections..........................8
Hydraulic installation scheme............12
Hydraulic parameters.......................128
I
Immersion thermostat........................13
Impressed current anode...................82
Inspection...........................................71
Installation
■ External unit....................................18
■ Internal unit.....................................23
Installation, external unit
■ Bracket set for wall mounting.........19
■ Supports for floorstanding installa-
tion..................................................19
Installation location requirements
■ External unit....................................18
■ Internal unit.....................................23
(cont.)
Installation room.................................23
Installation scheme......................12, 14
Instantaneous heating water
heater...............................13, 65, 66, 98
■ High limit safety cut-out reset.........93
■ Parameter settings.........................91
■ Power cable......................................9
■ Power supply..................................64
■ Specification.................................137
Instructing the system user................94
Internal/external unit connecting
cable........................................9, 58, 59
Internal/external unit interface............58
Internal components....................97, 99
Internal unit
■ Cable lengths....................................9
■ Dimensions...............................7, 138
■ Electrical values............................137
■ Internal components.......................97
■ Refrigerant lines.............................36
■ Service valve..................................98
■ Weight..........................................138
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, 139
Liquid line.......8, 13, 33, 35, 37, 73, 139
■ Torque......................................36, 40
Liquid separator...............100, 101, 102
Luster terminals...........................50, 53
LV leads.......................................46, 48
Keyword index
145