Unigas IDEA LG550 Manual Of Installation - Use - Maintenance Download

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III: MAINT

NANCE

BURNER EXPLODED VIEW

POSITION

DESCRIPTION

POSITION

DESCRIPTION

EXTENDED BLAST TUBE

CONTROL BOX

GENERATOR GASKET

IGNITION TRANSFORMER

THREADED GAS PIPE

ACTUATOR

FLANGE

AIR PRESSURE SWITCH

FLANGE

OUTPUT CONTROLLER

GAS PROVING SYSTEM

PRINTED CIRCUIT BOARD

COVER FIXING SCREW

FRONT CONTROL PANEL

AIR INTAKE

FRONT CONTROL PANEL

AIR INTAKE

LIGHT

PRESSURE PLUG

LIGHT

BRACKET

CONTACTOR

COVER

LOCK-OUT RESET BUTTON

FAIRLEAD

PROTECTION

FAIRLEAD

SWITCH

FAIRLEAD

FUSE

FLANGED PIPE

GAS MANIFOLD

BURNER HOUSING

EXTENDED COMBUSTION HEAD (ASSY)

MOTOR SUPPORT PLATE

IGNITION CABLE

FAN WHEEL

DETECTION CABLE

MOTOR

CONNECTOR

TRANSMISSION

CONNECTOR

GAS MANIFOLD

GAS VALVES GROUP WITH GOVERNOR

Summary of Contents for IDEA LG550

Page 1: ...IDEA Series Gas burners MANUAL OF INSTALLATION USE MAINTENANCE BURNERS BRUCIATORI BRULERS BRENNER QUEMADORES M039119CE Rev 5 3 11 2021 LG550 NG550 NGX550 LGX550...

Page 2: ...e employed exclusively for the use for which it was designed Before connecting the burner make sure that the unit rating is the same as delivery mains electricity gas oil or other fuel Observe caution...

Page 3: ...ixtures DIRECTIVES AND STANDARDS Gas burners European directives Regulation 2016 426 UE appliances burning gaseous fuels 2014 35 UE Low Tension Directive 2014 30 UE Electromagnetic compatibility Direc...

Page 4: ...quipment of machi nes EN 60335 2 Electrical equipment of non electric appliances for house hold and similar purposes Safety requirements Burner data plate For the following information please refer to...

Page 5: ...dulating burners the electric actuator 7 that moves proportionally the air damper and the gas butterfly valve uses an adjusting cam with variable shape This one allows the optimisation of the gas flue...

Page 6: ...ers with flame reversal in this case the blast tube must penetrate at least 50 100 mm into combustion chamber in respect to the tube bundle plate The length of the blast tubes does not always allow th...

Page 7: ...vice Internittent BURNERS NG550 M xx 0 25 NG550 M xx 0 32 NG550 M xx 0 40 NG550 M xx 0 50 LG550 L xx 0 25 LG550 L xx 0 32 LG550 L xx 0 40 LG550 L xx 0 50 Output min max kW 160 570 Fuel Natural gas L P...

Page 8: ...alid for G20 gas net calorific value Hi 34 02 MJ Stm3 for L P G net calorific value Hi 93 5 MJ Stm3 Note2 Maximum gas pressure 360mbar with Dungs MBDLE MBC valves Minimum gas pressure see gas curves f...

Page 9: ...s Draw a vertical line matching the furnace input value 600kW in the example quoted on the x axis as far as intercepitng the network pressure curve according to the installed gas train DN65 in the exa...

Page 10: ...head is set in order to find a compromise between the burner output and the generator specifications that is why the minimum output may be different from the Performance curve minimum Pressure in the...

Page 11: ...in the diagrams refer to GPL with a calorific value of 22300 kcal Stm3 15 C 1013 mbar and a density of 2 14 kg Stm3 When the calorific value and the density change the pressure values should be adjust...

Page 12: ...jig and burner flange DN A S A L B S B L C D 5mm E 5mm F G H J K L M N Omin Oma x P Q R S T W X Y NG LG550 25 32 843 943 253 353 590 671 245 426 165 178 384 241 384 M10 247 157 192 174 552 377 175 69...

Page 13: ...flange DN A S A L B S B L C D 5mm E 5mm F G H J K L M N Omin Oma x P Q R S T W X Y NGX550 LGX550 25 32 874 974 253 353 590 671 245 426 176 198 384 241 384 M10 247 157 192 174 552 377 175 69 543 533 16...

Page 14: ...stion chamber as described on paragraph Overall dimensions 2 place the burner to the boiler lift it up and handle it according to the procedure described on paragraph Handling the burner 3 place the s...

Page 15: ...item NOTE the bellow joint the manual valve and the gaskets are not part of the standard supply The procedures of installation fo the gas valves are showed in the next paragraph DANGER Incorrect moto...

Page 16: ...fter mounting perform leakage and functional tests Once the train is installed connect the gas valves group plug Fig 3 Fig 4 Fig 5 Fig 6 Fig 7 Fig 8 Fig 9 Fig 10 DANGER Incorrect motor rotation can se...

Page 17: ...on reassembly modification repair 6 On completion of work perform a leak and functional test When wishing to monitor the test install a pressure gauge ranged to that of the pressure supply point PA F...

Page 18: ...combustion head together 9 Fig 18 Rotate the disc D following the instructions below 10 Take off the screw VF Fig 18 11 Rotate the disc D for 180 and then fit the screw VF Fig 19 12 Reconnect CR and...

Page 19: ...ion to the mains ATTENTION before executing the electrical connections pay attention to turn the plant s switch to OFF and be sure that the burner s main switch is in 0 position OFF too Read carefully...

Page 20: ...FU3 LINE FUSE IL BURNER LINE SWITCH IM FAN MOTOR LINE SWITCH KM1 FAN MOTOR CONTACTOR LAF BURNER IN HIGH FLAME INDICATOR LIGHT LB INDICATOR LIGHT FOR BURNER LOCK OUT LBF BURNER IN LOW FLAME SIGNALLING...

Page 21: ...FAN MOTOR FU3 LINE FUSE FU4 AUXILIARY FUSE IL BURNER LINE SWITCH IM FAN MOTOR LINE SWITCH KM1 FAN MOTOR REMOTE CONTACTOR SIEMENS RWF40 MODULATION REGULATOR LB BURNER LOCKOUT SIGNALLING LAMP LBF BURNE...

Page 22: ...nical specifications Fig 29 Key 1 Pressure outlet on the combustion chamber 2 Gas pressure outlet on the butterfly valve 3 Differential pressure gauge 4 Fan air pressure plug Measuring the gas pressur...

Page 23: ...ly until the normal combustion values are achieved WARNING NEVER LOOSE THE SEALED SCREWS OTHERWISE THE DEVICE WARRANTY WILL BE INVALIDATE The values in the diagrams refer to natural gas with a calorif...

Page 24: ...PART I INSTALLATION 24 To perform the adjustments unscrew the fixing screws and remove the burner cover Keys 1 Valve group 2 Cover 3 Gas proving system 4 Control panel 5 Blast tube 3 4 1 5 2...

Page 25: ...ge the burner setting during the testing in the plant follows the next procedure according to the burner operation Before starting the burner up adjust the valves group slow opening to set the slow op...

Page 26: ...ove along the foil and related to the actuator position 12 unscrew the V srew to increase the air folw rate unscrew to decrease it 13 once the maximum flow rate is fixed shortcircuit for a while the t...

Page 27: ...g ring nut VR until the burner locks read the pressure value on the scale of the pressure switch and set it again to a value reduced by the 15 Repeat the start up cycle and check the burner runs prope...

Page 28: ...the transparent plastic cover on the pressure switch Adjusting the maximum gas pressure switch when provided To calibrate the maximum pressure switch proceed as follows according to its mounting posi...

Page 29: ...E ANY OPERATION OF THE APPLIANCE MUST BE PREVENTED WHICH DEPARTS FROM THE INSTALLATION OPERATIONS OR WHICH HAPPENS AFTER TOTAL OR PARTIAL TAMPERING WITH THESE E G DISCONNECTION EVEN PARTIAL OF THE ELE...

Page 30: ...signalling lamp or air damper opening during pre purge stage G Low flame operation signalling lamp H Ignition transformer in operation signalling light I EV2 opening signalling lamp L EV1 opening sign...

Page 31: ...t the end of the pre purge phase the air damper goes to the ignition position the ignition transformer comes on signalled by the LED H and few seconds later the solenoid valves EV1 and EV2 are energiz...

Page 32: ...er if the pressure difference between pressure connection 1 and 3 Fig 38 Fig 39 is twice as high compared to the last check You can change the filter without removing the fitting 1 Interrupt the gas s...

Page 33: ...screw V1 is longer than the other and must be replaced in its seat 2 Slacken the butterfly valve adjusting rod Fig 45 and take it out pulling outside 3 Remove the connector CR of the ionization electr...

Page 34: ...33 1 disconnect the cables from the electrodes ER detection electrode EA ignition electrode 2 loosen the fixing screw V 3 remove the electrodes and replace them observing the measures quoted on next...

Page 35: ...less than the value shown check the position of the detection electrode the electrical contacts and if necessary replace the detection electrode see Electrodes position setting on page 35 Fig 51 Seas...

Page 36: ...COVER FIXING SCREW 29 FRONT CONTROL PANEL 8 AIR INTAKE 30 FRONT CONTROL PANEL 9 AIR INTAKE 31 LIGHT 10 PRESSURE PLUG 32 LIGHT 11 BRACKET 33 CONTACTOR 12 COVER 34 LOCK OUT RESET BUTTON 13 FAIRLEAD 35 P...

Page 37: ...PART III MAINTENANCE 37...

Page 38: ...G MINIMUM GAS PRESSURE SWITCH PS LOCK OUT RESET BUTTON PT100 TEMPERATURE PROBE PT1000 TEMPERATURE PROBE RC RC CIRCUIT SATRONIC DLG976 CONTROL BOX SATRONIC DMG972 CONTROL BOX SD 0 10V VOLTAGE SIGNAL SD...

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Page 46: ...ing time air pressure monitor LP and flame relay FR are tested for correct contact positions t11 Programmed opening time for actuator SA Only with LME22 The air damper opens until the nominal load pos...

Page 47: ...d time for air pressure signal t11 Programmed opening time for actuator SA t12 Programmed closing time for actuator SA SB R W GP AL M LP BV1 Z FS tw t1 t3n TSA t4 7 t10 EK2 12 10 3 7 4 6 1 8 t3 A B B...

Page 48: ...W Limit thermostat pressure switch Z Ignition transformer LME22 connection diagram NT PC control RESET EK FSV ION 1 2 3 M 4 BV1 5 7 Z 10 AL T 12 R W GP STB 9 7101 24 0606 pa 6 LP 8 EK 11 K1 K2 1 K3 K...

Page 49: ...lt status is showed by the red LED inside the LME s lockout reset buttonaccording to the Error code table RESETTING THE BURNER CONTROL When lockout occurs the burner control can immediately be reset b...

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Page 52: ...ia L Galvani 9 35011 Campodarsego PD ITALY Tel 39 049 9200944 Fax 39 049 9200945 9201269 web site www cibunigas it e mail cibunigas cibunigas it Note specifications and data subject to change Errors a...

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