Viessmann BWT 241.A Series, Installation And Service Instructions Manual

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119
Cylinder module
■ Fitting..............................................26
■ Removing.......................................18
Cylinder temperature sensor..............76
D
Declaration of Conformity................117
DHW circulation pump.................31, 63
Diaphragm grommet..........................29
Dimensions..........................................7
Drain & fill valve.................................75
Draining, secondary heat pump side. 75
Drain valve.........................................31
Drinking water filter............................32
E
Economy tariff meter....................47, 48
Electrical connection
■ Circulation pumps...........................40
Electrical connections
■ Controller and sensor PCB.............42
■ Expansion PCB..............................40
■ Inserting cables..............................33
■ Luster terminals..............................40
■ Main PCB.......................................36
■ Overview.........................................34
Electrical connections, overview........67
Electrical equipment assembly
96
■ Internal unit.....................................82
Electric booster heater
■ Parameter settings.........................65
Electricity meter
■ For economy tariff.....................47, 48
■ For standard tariff.....................47, 48
Enable
■ Electric booster heater....................65
■ Instantaneous heating water heater 65
Enable electric booster heater...........65
Expansion PCB..................................40
Extended menu..................................62
External blocking
■ Parameter settings.........................64
External changeover in operating status
■ Parameter settings.........................64
External demand
■ Parameter settings.........................64
External extension H1........................63
External functions..............................64
External starting of the compressor
■ Parameter settings.........................64
F
Filling
■ Primary side....................................54
■ Secondary side...............................55
■ Solar circuit.....................................56
Fill water.............................................55
Floor load...........................................16
Floor unevenness..............................16
Flow limiter.........................................41
Flow regulating valve.........................31
Flow temperature sensor, cooling cir-
cuit.....................................................76
Flow temperature sensor, secondary cir-
cuit.....................................................76
Function check...................................66
Function components...................37, 40
Fuse
■ For heat pump control unit..............41
H
Handling.............................................17
Heating circuit pump..........................63
Heat pump
■ Closing............................................51
■ Siting...............................................16
Heat pump module
■ Installing.........................................26
■ Removing.......................................24
Heat transfer medium........................56
High limit safety cut-out
■ for solar circuit................................38
High limit safety cut-out reset.............66
Hydraulic connecting chamber...........31
Keyword index
Keyword index
(cont.)
5601 598 GB