4
Installation instructions
Installing the boiler............................................................................................... 11
Opening the control unit casing............................................................................ 14
Electrical connections........................................................................................... 15
Closing the control unit casing............................................................................. 19
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 21
Further details regarding the individual steps....................................................... 23
Calling up coding level 1...................................................................................... 61
General/Group "1"................................................................................................ 62
Boiler/Group "2".................................................................................................... 64
DHW/Group "3".................................................................................................... 65
Heating circuit 1, heating circuit 2, heating circuit 3/Group "5"............................. 65
Calling up coding level 2...................................................................................... 72
General/Group "1"................................................................................................ 73
Boiler/Group "2".................................................................................................... 81
DHW/Group "3".................................................................................................... 82
Heating circuit 1, heating circuit 2, heating circuit 3/Group "5"............................. 84
Calling up the service menu................................................................................. 94
Diagnosis.............................................................................................................. 94
Checking outputs (relay test)................................................................................ 99
Fault display......................................................................................................... 102
Fault codes........................................................................................................... 104
Repairs................................................................................................................. 115
Index
Index
5457 552 GB