Viessmann Vitocal 242-S Installation And Service Instructions Manual page 131

Keyword index
(cont.)
Flanged adaptors....................................................... 25
Flared connections.....................................................56
Floor load................................................................... 14
Floorstanding installation, external unit......................13
Flow regulating valve................................................. 30
Flow switch.................................................................36
Flow temperature sensor, cooling circuit..............37, 72
Flow temperature sensor, secondary circuit.........67, 72
Flow temperature sensor, solar circuit
– Curve.......................................................................72
Flow temperature sensor, system........................ 37, 72
Free running of fan, checking.....................................55
Freestanding siting.....................................................10
Frost stat connection..................................................37
Function test...............................................................64
Fuse
– AVI PCB............................................................ 33, 39
– Components, 230 V~.............................................. 33
– F1............................................................................ 75
– F101........................................................................ 75
– F3............................................................................ 75
– Heat pump control unit............................................ 33
– Max. power loss...................................................... 75
Fuse, checking........................................................... 75
Fuse protection
– Power supply, external unit............................... 42, 43
Fuse rating
– Power supply for instantaneous heating water
heater...................................................................... 43
G
Gravel bed
– As condensate drain............................................... 13
H
Heat exchanger cleaning........................................... 56
Heating circuit pump.................................................. 60
– Connection.............................................................. 34
Heating output, compressor....................................... 59
Heating water flow........................7, 8, 28, 29, 122, 125
Heating water return.....................7, 8, 28, 29, 122, 125
Heat pump, checking for noise...................................63
Heat pump, closing.............................................. 47, 56
Heat pump, opening...................................................49
Heat pump, starting....................................................57
Heat pump control unit power cable.............................9
Heat pump type, ticking..............................................63
Heat transfer medium.................................................53
Height differential
– Internal unit-external unit.........................................22
High limit safety cut-out
– Connection.............................................................. 35
– Solar circuit............................................................. 35
High limit safety cut-out reset.....................................64
High pressure fault..................................................... 11
High pressure switch............................................69, 70
Hose entries............................................................... 29
Hose outlets............................................................... 21
Hot gas line............................ 7, 8, 24, 26, 50, 122, 125
– Internal unit............................................................. 27
– Torque..................................................................... 25
Hydraulic connections.................................................. 8
Hydraulic parameters............................................... 112
Hydraulic terminal area.............................................. 30
I
Impressed current anode........................................... 55
Inspection...................................................................49
Installation.................................................................. 12
– External unit............................................................ 10
– Internal unit....................................................... 13, 14
Installation, external unit
– Bracket set for wall mounting.................................. 10
– Supports for floorstanding installation..................... 10
Installation information............................................... 10
Installation location requirements
– Internal unit............................................................. 14
Installation site, external unit...................................... 11
Instantaneous heating water heater.........44, 45, 62, 67
– High limit safety cut-out reset..................................64
– Power cable.............................................................. 9
– Power supply...........................................................43
– Specification..................................................120, 124
Instructing the system user........................................ 64
Integral loading cylinder................................... 121, 125
Intended use................................................................ 5
Interface internal unit – external unit.......................... 39
Internal/external unit connecting cable.......................40
Internal components.............................................67, 68
Internal unit
– Cable lengths............................................................ 8
– Dimensions............................................... 7, 121, 125
– Electrical connection............................................... 33
– Electrical values............................................ 120, 124
– Internal components................................................67
– Refrigerant lines...................................................... 25
– Service valve...........................................................68
– Transport................................................................. 13
– Weight........................................................... 121, 125
Internal unit, opening..................................................16
Internal unit, purging.................................................. 49
Internal unit, separating..............................................16
Internal unit installation........................................ 13, 14
Isolators......................................................................41
K
KM BUS distributor.....................................................38
L
Leak detection spray.................................................. 50
Lightning protection....................................................10
Line entry................................................................... 23
Line length
– Refrigerant lines................................................ 22, 51
Liquid gas temperature sensor.............................68, 72
Liquid line............................... 7, 8, 24, 26, 51, 122, 125
– Internal unit............................................................. 27
– Torque..................................................................... 25
Keyword index
131