Unigas PN91 Manual Of Installation - Use - Maintenance Download Page 46

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Summary of Contents for PN91

Page 1: ...MANUAL OF INSTALLATION USE MAINTENANCE PN91 PN92 PN93 PN510 PN515 PN520 PN525 M039196CC Rel 2 2 05 2010 BURNERS BRUCIATORI BRULERS BRENNER QUEMADORES Progressive Fully modulating Heavy oil Burners...

Page 2: ...g oil ring 14 Burner adjustments 14 HYDRAULIC DIAGRAMS 18 Adjusting light oil flow rate 21 Oil thermostat adjustment 22 Thermostat adjustment for petroleum burners 22 ADJUSTING AIR AND FUEL RATE 23 Ad...

Page 3: ...ins electricity gas oil or other fuel z Observe caution with hot burner components These are usually near to the flame and the fuel pre heating system they become hot during the unit operation and wil...

Page 4: ...of toxic or explosive mixtures DIRECTIVES AND STANDARDS Gas burners European directives Directive 2009 142 EC Gas Appliances Directive 2006 95 EC on low voltage Directive 2004 108 EC on electromagneti...

Page 5: ...eavy oil viscosity 110cSt 15 E 50 C D Heavy oil viscosity 400cSt 50 E 50 C P Petroleum viscosity 89cSt 12 E 50 C 3 OPERATION Available versions PR Progressive MD Fully modulating 4 BLAST TUBE S Standa...

Page 6: ...326 6977 2000 8000 Fuel Heavy oil Oil viscosity See Burner model identification table Heavy oil rate min max kg h 117 352 145 435 207 622 178 713 Power supply 230 400V 3N a c 50Hz 400V 3N a c 50Hz Tot...

Page 7: ...sition During the first ignition the combustion 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 fro...

Page 8: ...inserted into the A anb B ways Remove the stirrup only once the burner is installed to the boiler Type A B BL C CL D E F G K H M P Y PN91 1017 298 488 1315 1505 532 520 1052 262 464 292 M12 295 228 PN...

Page 9: ...n the 4 stud bolts 5 place the gasket on the burner flange 6 install the burner into the boiler 7 fix the burner to the stud bolts by means of the fixing nuts according to the next picture 8 After fit...

Page 10: ...s main switch is in 0 position OFF too Read carefully the chapter WARNINGS and the Electrical connections section WARNING The burner is provided with an electrical bridge between terminals 6 and 7 wh...

Page 11: ...used besides another pipe that connects the pum s return port to the tank as well The excess of oil goes back to the tank this installation can be considered self ble eding If provided the inside by p...

Page 12: ...on line to bleed To avoid damages inject some lubrication oil into the vacuum inlet z Care must be taken when installing the pump not to force the pump shaft along its axis or laterally to avoid exces...

Page 13: ...pressurised The pressurisation is also necessary to feed the burner pump avoiding its cavitation because of the high suction at the inlet The supplying system scope is to pump and heat oil The oil vis...

Page 14: ...the supplying oil ring According to the heavy oil viscosity used in the table below indicative temperature and pressure values to be set are shown Note the temperature and pressure range allowed by t...

Page 15: ...1 4 48 150 19 3 128 14 48 43 2 5 92 200 23 5 170 18 9 54 7 35 250 28 212 23 45 65 8 79 300 32 5 254 28 87 6 11 7 400 41 9 338 37 1 110 14 6 500 51 6 423 46 2 132 17 5 600 61 4 508 55 4 154 20 45 700 7...

Page 16: ...30 40 50 60 70 80 90 100 110 120 130 140 150 160 TEMPERATURE C VISCOSITY E LIGHT OIL 1 3 E AT 20 C HEAVY OIL 2 4 E AT 50 C HEAVY OIL 4 E AT 50 C HEAVY OIL 7 5 E AT 50 C HEAVY OIL 10 E AT 50 C HEAVY O...

Page 17: ...tomising temperature should be between 145 C and 160 C see diagram OIL TEMPERATURE FOR PUMP FEEDING 1 10 100 0 10 20 30 40 50 60 70 80 90 TEMPERATURE C VISCOSITY E a 50 C Fig 10 PUMP FEEDING PRESSURE...

Page 18: ...C I B UNIGAS M039196CC 18 HYDRAULIC DIAGRAMS Fig 13 Hydraulic diagram 3ID0023 Single burner configuration...

Page 19: ...C I B UNIGAS M039196CC 19 Fig 14 Hydraulic diagram 3ID0014 Two or more burners configuration...

Page 20: ...for main tank pre heating 19 48 Water pre heating balance setting valve 50 Oil circulation pump 52 Oil ring max pressure switch Hydraulic Diagram 3ID0023 1 Main tank 2 Bottom valve 3 Main tank pre hea...

Page 21: ...NOZZLE DELIVERY PRESSURE bar RETURN PRESSURE MAX bar RETURN PRESSURE MIN bar FLUIDICS WR2 25 19 20 7 9 recommended Tab 4 Fig 15 Atomisation angle according to the return pressure _________ Flow rate...

Page 22: ...C This thermostat trips when the operating temperature exceeds the set limit Ascertain the cause of the malfunction and reset the ther mostat by means of the PR button see picture CAUTION even if the...

Page 23: ...asing too much or the flues temperature getting too low to cause condensation in the chimney Now adjust the burner according to the actuator model provided ATTENTION before starting the burner up be s...

Page 24: ...he RESET button C on the control panel see chapter OPERATION 5 Start the burner up by means of the thermostat series and wait unitl the pre purge phase comes to end and that burner starts up 6 drive t...

Page 25: ...he adjustment is accomplished Attention if it is necessary to change the head position repeat the air and gas adjustments described above 11 as for the point to point regulation in order to set the ca...

Page 26: ...ol panel press the RESET button C see chapter OPERATION 5 Start the burner up by means of the thermostat series and wait until the pre purge phase comes to end and that burner starts up 6 the burner s...

Page 27: ...B screw and move pro gressively back the combustion head towards the MIN position by turning clockwise the VRT ring nut Fasten VB screw when the adjustment is accomplished Attention if it is necessary...

Page 28: ...p the burner z During the pre purge phase o the operation turn slowly the adjusting ring nut VR in the clockwise direction until the burner lockout then read the value on the pressure switch scale and...

Page 29: ...ack nozzle is feeded at constant pressure while the return line pressure is adjusted by means of the pressure governor controlled by an actuator coupled to an adjusting cam The fuel amount to be burnt...

Page 30: ...T FURTHER WARNING DURING NORMAL OPERATION THE PARTS OF THE BURNER NEAREST TO THE GENERATOR COUPLING FLANGE CAN BECOME VERY HOT AVOID TOUCHING THEM SO AS NOT TO GET BURNT OPERATION N B be sure the cuto...

Page 31: ...High flame 2 Low flame 3 Automatic D Fan motor thermal cutout intervention E Burner lockout F Burner in stand by IRA Auxiliary resistors wsitch L Heavy oil solenoid lamp operation N Contrlol box reset...

Page 32: ...ssary see page 34 z Examine the detection current see page 34 z Remove and clean page 34 the heavy oil nozzle Important use solvents for cleaning not metallic tools and at the end of the maintenance p...

Page 33: ...emove them place the new electrodes being careful to observe the measures shown on next paragraph reassemlbe following the reversed procedure Caution adjust the nozzle position by means of the VU scre...

Page 34: ...photoresistor if necessary PN91 PN92 PN93 LMO44 PN510 PN515 PN520 PN525 LAL2 Cleaning and replacing the detection photoresistor When cleaning the photoresistive detector always use a clean cloth If ne...

Page 35: ...XIMUM THERMOSTAT MALFUNCTION z FAN THERMAL CUTOUT TRIPPED z AUXILIARY FUSE BLOWN z OIL RESISTOR FAULTY z z OIL ENABLING THERMOSTAT TRIPPED z z CONTROL UNIT MALFUNCTION z z z z z z AIR SERVOCONTROL MAL...

Page 36: ...1 1 LONG IGNITION ELECTRODE 6 7 CONNECTOR 9 1 FAIRLEAD 3 1 2 LONG IGNITION ELECTRODE 7 1 UNION ELBOW 9 2 FAIRLEAD 3 1 3 COMBUSTION HEAD 7 2 STRAIGHT UNION 10 AIR INLET CONE 3 1 4 IGNITION CABLE 7 3 U...

Page 37: ...C I B UNIGAS M039196CC 37...

Page 38: ...SQM40 24800A5 24800A5 24800A5 PHOTORESISTOR SIEMENS 2510003 2510003 2510003 COUPLING 2540121 2540121 2540134 RESISTOR THERMOSTATTR TCN TCI 2560026 2560026 2560026 THERMOSTAT TRS 2560028 2560028 25600...

Page 39: ...88 2340088 2340088 OIL GUN HOSES 2340089 2340089 2340089 2340089 ADJUSTING CAM FOIL 2440013 2440013 2440013 2440013 ACTUATOR mod SIEMENS SQL 2480007 2480007 2480007 2480007 ACTUATOR mod BERGER STM30 2...

Page 40: ...d for activating deactivating the diagnostic functions The multicolour LED is the key indicating element for both visual diagnosis and interface diagnosis s Red l Yellow o Green Key m Off l Yellow o G...

Page 41: ...black R Control thermostat or pressurestat SB Safety limit thermostat Si External primary fuse W Limit thermostat or pressure switch Z Ignition transformer t4 Interval from flame signal to release BV2...

Page 42: ...for the oil preheater s temperature z Normally closed contact of the air pressure switch must be closed Startup sequence Start command by R R closes the start control loop between terminals 4 and 5 z...

Page 43: ...damper to the nominal load or low fire position depending on heat demand the release of the nominal load takes place via auxiliary switch v in the actuator and in the event of loss of flame during op...

Page 44: ...terminal 7 start delay time for M2 t8 Duration of startup sequence excluding t11 and t12 t10 Interval from startup to the beginning of the air pressure check t11 Air damper running time to the OPEN p...

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Page 48: ...subject to change without notice Errors and omissions excepted C I B UNIGAS S p A Via L Galvani 9 35011 Campodarsego PD ITALY Tel 39 049 9200944 Fax 39 049 9200945 9201269 web site www cibunigas it e...

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Unigas PN91, Manual Of Installation - Use - Maintenance

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