Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 103

Keyword index
(cont.)
Electricity meter..........................................................28
– Economy tariff................................................... 32, 33
– Premium tariff....................................................32, 33
Energy meters............................................................50
Entry grommets..............................................18, 19, 20
Expansion PCB.................................. 26, 52, 53, 65, 77
Expansion vessel....................................................... 40
– Checking................................................................. 41
Extended menu.......................................................... 45
Extension kit, mixer.............................................. 28, 47
External extension......................................................47
External functions.......................................................48
F
Feed........................................................................... 30
Filling
– Primary side............................................................ 40
– Secondary side....................................................... 40
– Solar circuit............................................................. 41
Fill water.....................................................................40
Floor load................................................................... 10
Flow regulating valve................................................. 21
Flow switch.................................................................26
Flow temperature sensor, cooling circuit..............28, 56
Flow temperature sensor, primary circuit................... 55
Flow temperature sensor, secondary circuit...............55
Flow temperature sensor, system........................ 27, 56
Frost stat.................................................................... 37
full wave soft starter................................................... 52
Function test...............................................................51
Fuse F1...................................................................... 58
Fuse F3...................................................................... 58
Fuses, checking......................................................... 58
H
Heating circuit pump.................................................. 47
– Connection.............................................................. 24
Heat pump
– Closing.............................................................. 37, 43
– Opening.............................................................11, 39
– Siting....................................................................... 11
Heat pump control unit
– Connections............................................................ 23
– Controller and sensor PCB..................................... 27
– Expansion PCB....................................................... 26
– Luster terminals.......................................................26
– Main PCB................................................................ 24
Heat pump module...............................................67, 81
– Installing.................................................................. 18
– Removing................................................................ 16
Heat transfer medium.....................................20, 40, 41
High limit safety cut-out..............................................55
– Connection.............................................................. 25
– Reset.......................................................................51
– Solar circuit............................................................. 25
Hose outlets............................................................... 18
Hydraulic connections................................................ 19
Hydraulic parameters................................................. 88
Hydraulic terminal area.............................................. 21
I
Ice store system......................................................... 51
Impressed current anode........................................... 42
Inspection...................................................................39
Installation room...........................................................9
Installation room requirements...................................10
Instantaneous heating water
heater........................................... 32, 33, 49, 55, 95, 97
– Power supply...........................................................31
– Resetting high limit safety cut-out........................... 51
Instructing system user.............................................. 51
Intended use................................................................ 6
Internal components...................................................55
Isolators......................................................................29
K
Klixon hot gas.............................................................55
KM BUS distributor.....................................................28
L
Leak test.....................................................................37
Low pressure switch.......................................55, 67, 81
Luster terminals..........................................................26
M
Magnesium anode................................................42, 43
– Replacing................................................................ 42
Magnesium anode removal........................................42
Magnesium anode resistance measurement....... 42, 43
Main MCB/fuse...........................................................43
Main PCB........................................... 24, 52, 53, 65, 77
Mains isolator....................................................... 33, 39
Maintenance...............................................................39
Maximum temperature limiter.....................................25
MCB/fuse protection
– Compressor.............................................................31
– Instantaneous heating water heater........................31
Minimum clearance.................................................... 10
Minimum flow rate...................................................... 21
Minimum room height.................................................10
Minimum room volume...............................................10
Minimum system pressure......................................... 41
Mixer extension kit..................................................... 26
Modbus distributor......................................................28
Motor overload relay............................................ 52, 53
N
Noise.............................................................. 18, 37, 59
Non-return valve...................................................21, 55
O
Off signal.................................................................... 32
ON/OFF switch...........................................................44
On-site connections..................................................... 8
On-site power consumption................................. 30, 34
Opening programming unit.........................................54
Operator's log.............................................................39
Output data.......................................................... 95, 97
Outside temperature sensor.................................27, 56
Overflow valve............................................................21
Keyword index
103