2
PART I: INSTALLATION MANUAL .......................................................................................................................... 6
Technical specifications .................................................................................................................................................................. 6
Country and usefulness gas categories........................................................................................................................................... 8
Fuel .................................................................................................................................................................................................. 8
Matching the burner to the boiler ..................................................................................................................................................... 8
Performance curves....................................................................................................................................................................... 10
Pressure in the network curves/gas rate ....................................................................................................................................... 11
MOUNTINGS AND CONNECTIONS............................................................................................................................................. 12
Packing .......................................................................................................................................................................................... 12
Fitting the burner to the boiler ........................................................................................................................................................ 12
GAS TRAIN CONNECTIONS ........................................................................................................................................................ 13
Assembling the gas grain............................................................................................................................................................... 14
Siemens VGD20.. and VGD40.. gas valves - with SKP2.. (pressure governor) .......................................................................... 14
Pressure adjusting range ............................................................................................................................................................... 16
Hidraulic system............................................................................................................................................................................. 16
About the use of fuel pumps .......................................................................................................................................................... 17
Oil pumps....................................................................................................................................................................................... 18
Assembling the light oil flexible hoses ........................................................................................................................................... 19
Hydraulic diagrams for light oil supplying circuits .......................................................................................................................... 20
Light oil piping installation diagram ................................................................................................................................................ 21
Electrical connections .................................................................................................................................................................... 22
Electrical wiring diagram for burners with no printed circuit board provided provided .................................................................. 23
Rotation of fan motor and pump motor .......................................................................................................................................... 23
ADJUSTEMENTS .......................................................................................................................................................................... 24
Combustion head gas pressure curves depending on the flow rate .............................................................................................. 24
Measuring the gas pressure in the combustion head .................................................................................................................... 24
Pressure in combustion head- gas rate curves ........................................................................................................................... 25
Oil nozzles ..................................................................................................................................................................................... 26
Adjustments - brief description....................................................................................................................................................... 29
Adjustment procedure for light oil operation .................................................................................................................................. 29
Adjustment procedure for gas operation........................................................................................................................................ 31
Calibration of air and gas pressure switches ................................................................................................................................. 33
Calibration of air pressure switch................................................................................................................................................... 33
Calibration of low gas pressure switch........................................................................................................................................... 33
Adjusting the maximum gas pressure switch (when provided) ...................................................................................................... 33
PART II: OPERATION ............................................................................................................................................. 35
OPERATION.................................................................................................................................................................................. 36
PART III: MAINTENANCE ....................................................................................................................................... 37
ROUTINE MAINTENANCE............................................................................................................................................................ 37
Removing the filter in theMULTIBLOC DUNGS MB-DLE 415 - 420 B01 1” 1/2 - 2”...................................................................... 37
Gas filter maintenance ................................................................................................................................................................... 38
Removing the combustion head .................................................................................................................................................... 38
Cleaning/replacing the electrodes.................................................................................................................................................. 39
Check the detection current ........................................................................................................................................................... 39
Seasonal stop ................................................................................................................................................................................ 40
Burner disposal .............................................................................................................................................................................. 40
TROUBLESHOOTING................................................................................................................................................................... 40
WIRING DIAGRAMS
APPENDIX
