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

Page: 118 / 124

118
A
Adjustable feet...................................16
Aligning the appliance........................16
Ambient temperatures........................16
Appliance fuse...................................76
Appliance too noisy............................77
Assembly...............................26, 78, 92
B
Brine pressure switch.........................50
Buffer temperature sensor.................76
C
Casing assembly..........................80, 94
Checking
■ Fuse................................................76
■ Sensors..........................................75
Checking sensors..............................75
Checking the expansion vessel.........57
Checking the fuses............................76
Checking the pressure.......................57
Checking the refrigerant circuit for
leaks...................................................54
Checking the system pressure...........57
Check valve.......................................31
Cleaning the cylinder.........................57
Coding level 1....................................59
Collector area.....................................56
Commissioning............................53, 60
Commissioning assistant...................59
Compressor
■ Power supply 230 V~.....................45
■ Power supply 400 V~.....................45
Conditions of site...............................16
Connecting the DHW circulation
pump..................................................38
Connecting the heating circuit pump..38
Connecting the high limit safety cut-
out......................................................38
Connecting the solar circuit pump......38
Connection
■ At control unit..................................34
■ Cooling circuit.................................32
■ DHW...............................................31
■ Electrical.........................................33
■ Hydraulic.........................................29
■ Overview...........................................7
■ Primary circuit.................................29
■ Secondary circuit......................29, 30
■ Solar circuit.....................................32
Connection conditions
■ Power supply utility.........................47
Connections
■ Preparing..........................................8
■ Primary circuit.................................30
Connection set...................................29
Connections on the DHW side...........31
Connection values
■ Circulation pumps...........................40
■ DHW circulation pump....................38
■ Function components...............37, 40
■ Heating circuit pump.......................38
■ Solar circuit pump...........................38
Contact humidistat.............................32
Controller PCB...................................42
Control parameter reports................106
Control unit
■ Connections....................................34
■ Controller and sensor PCB.............42
■ Expansion PCB..............................40
■ Luster terminals..............................40
■ Main PCB.......................................36
■ Removing.......................................18
Cooling circuit....................................32
Corrosion damage.......................58, 59
Curve
■ Temperature sensor type Ni 500....76
■ Temperature sensor type Pt 500....76
Cylinder
■ Cleaning.........................................57
■ Drain & fill valve..............................75
■ Specification.........................112, 115
Cylinder assembly......................90, 102
Keyword index
Keyword index
5601 598 GB