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0311704_BFC_28-120_III_ENEN_V2.4, 2022-10-17
7.2.4
Working clearances...........................................................54
7.3
Installation diagram.......................................................... 55
7.4
Water connections............................................................ 56
7.4.1
Unvented water connections.............................................. 56
7.4.2
Vented water connections.................................................. 57
7.5
Gas connection.................................................................58
7.6
Venting system................................................................ 58
7.6.1
C13/C33 concentric systems.............................................. 60
7.6.2
C13/C33 parallel systems.................................................. 62
7.6.3
C43/C53/C63 systems.......................................................64
7.7
Electrical connections........................................................ 65
7.7.1
Preparation......................................................................65
7.7.2
Mains power.................................................................... 66
7.7.3
Optional electrical connections............................................66
7.8
Commissioning.................................................................67
7.8.1
Filling..............................................................................67
7.8.2
Procedure for checking the supply pressure..........................68
7.8.3
Procedure for checking the gas control valve pressure........... 70
7.8.4
adjustment............................................................... 71
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7.8.5
Switching pressure measurement....................................... 73
7.8.6
Turn on the water heater................................................... 74
7.9
Decommisioning............................................................... 74
7.9.1
Turn off the water heater...................................................74
7.9.2
Draining.......................................................................... 74
Conversion of gas type.............................................................. 77
Settings..................................................................................... 79
9.1
Operator interface............................................................ 79
9.2
Service program...............................................................79
9.2.1
Hysteresis....................................................................... 79
9.2.2
Display the error history.................................................... 80
9.2.3
Display the water heater history......................................... 80
9.2.4
Display the selected water heater....................................... 81
9.2.5
Switch the pump on or off................................................. 81
9.2.6
Setting the service interval................................................ 81
9.2.7
Service mode...................................................................82
9.2.8
Setting legionella prevention.............................................. 83
9.2.9
Setting the central heating configuration..............................83
Maintenance.............................................................................. 85
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