2
TABLE OF CONTENTS
WARNINGS ................................................................................................................................................................ 3
PART I: INSTALLATION MANUAL .......................................................................................................................... 5
Burner model identification ............................................................................................................................................................. 5
Specifications .................................................................................................................................................................................. 5
Country and usefulness gas categories .......................................................................................................................................... 6
Overall dimensions ......................................................................................................................................................................... 7
Performance curves ...................................................................................................................................................................... 10
MOUNTINGS AND CONNECTIONS ............................................................................................................................................ 12
Packing ......................................................................................................................................................................................... 12
Fitting the burner to the boiler ....................................................................................................................................................... 12
Matching 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) ......................................................................... 16
Pressure adjusting range .............................................................................................................................................................. 16
Gas Proving System VPS504 ....................................................................................................................................................... 17
Electrical connections ................................................................................................................................................................... 18
Rotation of fan motor .................................................................................................................................................................... 19
ADJUSTMENTS ........................................................................................................................................................................... 20
Combustion head gas pressure curves depending on the flow rate ............................................................................................. 20
Measuring the gas pressure in the combustion head ................................................................................................................... 20
Gas pressure in combustion head vs. gas flow rate curves .......................................................................................................... 21
Adjusting air and gas flow rates .................................................................................................................................................... 22
Startup Output ............................................................................................................................................................................... 22
Adjustments - brief description ...................................................................................................................................................... 22
Adjusting procedure ...................................................................................................................................................................... 22
Progressive burners ...................................................................................................................................................................... 26
Fully modulating burners ............................................................................................................................................................... 27
Calibration of air and gas pressure switches ................................................................................................................................ 27
Calibration of air pressure switch .................................................................................................................................................. 27
Calibration of low gas pressure switch .......................................................................................................................................... 27
Adjusting the high gas pressure switch (when provided) .............................................................................................................. 27
PART II: OPERATION ............................................................................................................................................. 28
OPERATION................................................................................................................................................................................. 29
PART III: MAINTENANCE....................................................................................................................................... 31
ROUTINE MAINTENANCE ........................................................................................................................................................... 31
Removing the filter in theMULTIBLOC DUNGS MB-DLE 415 - 420 ............................................................................................. 31
Inspection and replacement of the MULTIBLOC DUNGS MBC..SE filter (Threaded valves group) ............................................ 32
Gas filter maintenance .................................................................................................................................................................. 32
Removing the combustion head ................................................................................................................................................... 32
Adjusting the electrodes ................................................................................................................................................................ 33
Replacing the electrodes .............................................................................................................................................................. 34
Checking the detection current ..................................................................................................................................................... 34
Seasonal stop ............................................................................................................................................................................... 35
Burner disposal ............................................................................................................................................................................. 35
TROUBLESHOOTING .................................................................................................................................................................. 36
SPARE PARTS............................................................................................................................................................................. 37
BURNER EXPLODED VIEW ......................................................................................................................................................... 38
WIRING DIAGRAMS .................................................................................................................................................................... 42
APPENDIX