Table Of Contents - Viessmann FB2A Installation And Service Instructions For Contractors

Compact energy tower with a gas condensing boiler, 4.8 to 26 kw natural gas and lpg version, g.c. no: 47-819-18/47-819-19 19 kw/26kw

Table of Contents

Index

Product information..............................................................................................

Preparing for installation.......................................................................................

Installing the boiler............................................................................................... 10

Opening the control unit casing............................................................................ 15

Electrical connections........................................................................................... 16

Closing the control unit casing............................................................................. 20

Service instructions

Further details regarding the individual steps....................................................... 24

Code 1

Calling up code 1.................................................................................................. 61

General................................................................................................................. 61

Boiler.................................................................................................................... 63

DHW..................................................................................................................... 66

Solar..................................................................................................................... 66

Heating circuit 1/heating circuit 2......................................................................... 67

Code 2

Calling up coding level 2...................................................................................... 72

General................................................................................................................. 72

Boiler.................................................................................................................... 74

DHW..................................................................................................................... 75

Solar..................................................................................................................... 76

Heating circuit 1/heating circuit 2......................................................................... 78

Diagnosis.............................................................................................................. 81

Checking outputs (relay test)................................................................................ 83

Fault display......................................................................................................... 85

Fault codes........................................................................................................... 86

Repairs................................................................................................................. 93

Chapters

Table of Contents

Vitodens 242-f