4
6
Commissioning and startup..................................................................................................31
6.1
Conditions...........................................................................................................................31
6.1.1 Connecting measuring device........................................................................................ 32
6.1.2 Air pressure switch presetting..................... ...................................................................33
6.1.3 Gas pressure regulator presetting.................................................................................33
6.1.4 Setting values..................................................................................................................... 34
6.2
Burner setting.....................................................................................................................35
6.3
Setting air pressure switch..............................................................................................42
6.4
Concluding works............................................................................................................. 42
6.5
Combustion analysis.........................................................................................................43
6.6
Calculating gas throughput............................................................................................. 44
6.7
Subsequent optimization of the operating points....................................................... 45
7
Shutdown....................................................................................................................................... 46
8
Maintenance and service........................................................................................................47
8.1
Notes on maintenance and service................................................................................47
8.2
Service plan........................................................................................................................ 48
8.3
Removing and re-installing the mixing head.................................................................49
8.4
Setting the mixing head....................................................................................................50
8.5
Setting the ionization and ignition electrodes..............................................................51
8.6
Service position................................................................................................................. 52
8.7
Removing and re-installing the blower wheel.............................................................. 53
8.8
Removing the burner motor.............................................................................................54
8.9
Removing and re-installing the air damper stepping motor...................................... 55
8.10 Removing and re-installing the angle drive...................................................................56
8.11 Removing and re-installing the gas butterfly stepping motor................................... 57
8.12 Removing and re-installing the gas butterfly valve...................................................... 58
8.13 Removing and re-installing the air regulator................................................................. 59
8.14 Replacing the combustion manager..............................................................................58
8.15 Replacing the combustion manager’s fuse..................................................................62
9
Faults rectification......................................................................................................................63
9.1
Procedures during fault condition..................................................................................63
9.1.1 Display off............................................................................................................................63
9.1.2 Display showing OFF........................................................................................................63
9.1.3 Display flashing.................................................................................................................. 64
9.1.4 Detailed fault codes.......................................................................................................... 65
9.2
Faults codes, causes and rectification..........................................................................66
9.3
Operating problems.......................................................................................................... 71
Installation and Operating Instructions
Gas burner WG20.../1-C ZM-LN (W-FM 25)
83055116 • 1/2016-05
