Unigas Idea Series Manual
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Unigas Idea Series Manual

Light oil burners
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IDEA RANGE
LIGHT OIL BURNERS
LO280
LO400
Compying with
EMC 79/336/CEE
LV 73/23/CEE
Documentazione Tecnica CIB UNIGAS spa - Campodarsego (Padova - Italy)
M039134CB Rev. 1 12-06

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Summary of Contents for Unigas Idea Series

  • Page 1 ® IDEA RANGE LIGHT OIL BURNERS LO280 LO400 Compying with EMC 79/336/CEE LV 73/23/CEE Documentazione Tecnica CIB UNIGAS spa - Campodarsego (Padova - Italy) M039134CB Rev. 1 12-06...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS WARNINGS ..............................3 PART I: INSTALLATION..........................5 BURNERS CHARACTERISTICS ............................5 Burner model identification..............................5 Technical Specifications ...............................5 Overall dimensions (mm) ..............................6 Performance curves ................................7 How to modify blast tube length (mod. LO400) ........................8 MOUNTING AND CONNECTIONS ............................10 Fitting the burner to the boiler ............................10 LIGHT OIL PIPING INSTALLATION DIAGRAM ........................

  • Page 3: Warnings

    WARNINGS THIS MANUAL IS SUPPLIED AS AN INTEGRAL AND ESSENTIAL PART OF THE PRODUCT AND MUST BE DELIVERED TO THE USER. INFORMATION INCLUDED IN THIS SECTION ARE DEDICATED BOTH TO THE USER AND TO PERSONNEL FOLLOWING PRODUCT INSTALLATION AND MAINTENANCE. THE USER WILL FIND FURTHER INFORMATION ABOUT OPERATING AND USE RESTRICTIONS, IN THE SECOND SEC- TION OF THIS MANUAL.
  • Page 4 3b) FIRING WITH GAS, LIGHT OIL OR OTHER FUELS GENERAL INSTRUCTIONS DEPENDING ON FUEL USED GENERAL The burner shall be installed by qualified personnel and in 3a) ELECTRICAL CONNECTION compliance with regulations and provisions in force; wrong For safety reasons the unit must be efficiently earthed and installation can cause injuries to people and animals, or installed as required by current safety regulations.

  • Page 5: Part I: Installation

    PART I: INSTALLATION BURNERS CHARACTERISTICS Burner model identification Burners are identified by burner type and model. Burner model identification is described as follow. Type LO400 Model BURNER TYPE LO280 - LO400 FUEL Light oil A - Biodiesell OPERATION Available versions TN - Single stage AB - Double stage M - Modular...

  • Page 6: Overall Dimensions (Mm)

    PART I: INSTALLATION...

  • Page 7: Performance Curves

    Performance curves LO280 High-Low flame LO280 Single stage Fig. 6 Fig. 7 LO400 High-Low flame LO400 Single stage Fig. 8 Fig. 9 PART I: INSTALLATION...

  • Page 8: How To Modify Blast Tube Length (Mod. Lo400)

    How to modify blast tube length (mod. LO400) To modify blast tube length please read the following instructions. Remove combustion head (See “Removing the combustion head” - Part III of this user’s manual). Remove the flanged piece T by removing the 4 socket head screws VTF (Fig. 10). Remove the 4 screws which hold the blast tube to the flanged piece (Fig.
  • Page 9 If you modify the blast tube length you have to modify also the combustion head length by reading the following instructions: Loosen the light oil feeding pipes connected to the nozzle-holder by using two spanners size 22 and 10 (Fig. 16). Adjust cables length by pulling them very slightly as shown in Fig.

  • Page 10: Mounting And Connections

    MOUNTING AND CONNECTIONS Packing The burners are despatched in packages of dimensions 795 x 550 x 490 mm (W x H x D). Packing cases of this kind are affected by humidity; the maximum number of cases to be stacked is indicated outside the packing .
  • Page 11 ELECTRICAL WIRING ATTENTION: PLEASE READ CAREFULLY THE “WARNINGS” CHAPTER, AT THE BEGINNIG OF THIS MANUAL. Identification of linking connectors HIGH/LOW flame connector (CONN-TAB, ) - mod. LO400 Fig. 23 Burner power supply connector (CONN-LINEA, Fig. 24, ) Fig. 24 IMPORTANT: before operating the burner, be sure all connectors are linked as indicated in the diagrams. Make the electric connections following the diagrams below.

  • Page 12: Light Oil Piping Installation Diagram

    LIGHT OIL PIPING INSTALLATION DIAGRAM PLEASE READ CAREFULLY THE “WARNINGS” CHAPTER AT THE BEGINNIGN OF THIS MANUAL From tank To tank Fig. 27 (*) Only for installations with gravity, siphon or for- ced circulation feed systems. If the device installed Burner is a solenoid valve, a timer must be installed to Flexible hoses (fitted)

  • Page 13: Pump Operating Principle

    Pump operating principle In the burners, the mixture bertween oil and air, to perform a clean and efficient combustion, is activated by atomization of oil into very small particles. This process is achieved making oil passing through the nozzle at a determined pressure The pump’s main function is to transfer oil from the tank to the nozzle in the desired quantity and pressure.

  • Page 14: About The Use Of Fuel Pumps

    about the use of fuel pumps Make sure that the by-pass plug is not used in a single pipe installation, because the fuel unit will not function properly and damage to the pump and burner motor could result. Do not use fuel with additives to avoid the possible formation over time of compounds which may deposit between the gear teeth, thus obstructing them.

  • Page 15: Setting Lo280

    SETTINGS LO280 Oil rate adjustment - Single stage burners Priming the pump Before carrying out the adjustment it is necessary to start up the fuel pump, proceeding as follows: Prior to start up the burner, make sure that the return pipe to the tank is not obstructed. Any obstruction would cause the pump seal to break.

  • Page 16: Oil Rate Adjustment - High-Low Flame Burners

    Oil rate adjustment - High-low flame burners Priming the pump Before carrying out the adjustment it is necessary to start up the fuel pump, proceeding as follows: Prior to start up the burner, make sure that the return pipe to the tank is not obstructed. Any obstruction would cause the pump seal to break.

  • Page 17: Mod. Lo280 Air Rate Setting

    mod. LO280 Air rate setting Single stage burners loosen VR screw. move the ID index along the graduated slot towards + or -, in order to increase or decrease the air flow-rate, according to the required combustion values. asten the VR screw again. Fig.

  • Page 18: Mod. Lo400 Settings

    MOD. LO400 SETTINGS Priming the pump Before carrying out the adjustment it is necessary to start up the fuel pump, proceeding as follows: Prior to start up the burner, make sure that the return pipe to the tank is not obstructed. Any obstruction would cause the pump seal to break.
  • Page 19 Tab. 3b - Double-stage LO400 RATE OUTPUT PUMP PRESSURE kcal/h 10bar 12bar 14bar 306.300 3.50+4.50 3.00+4.00 3.00+3.50 357.350 4.00+5.00 3.50+5.00 3.50+4.00 408.400 4.50+6.00 4.00+5.50 4.00+5.00 459.450 5.00+6.50 4.50+6.00 4.00+6.00 510.500 5.50+7.50 5.00+7.00 4.50+6.50 PART I: INSTALLATION...

  • Page 20: First Start And Air Rate Setting (Mod. Lo400)

    (MOD. LO400) irst start and air rate setting Single stage burners Set the air rate working on the screw VBS (Fig. 39); screw to decrease the air rate or unscrew to increase it. Two-stage burners The air flow can be adjusted using the air damper servo-con- trol cams as follows.

  • Page 21: Servocontrol Cams Setting - Adjustment Of Cams Microswitches

    SERVOCONTROL CAMS SETTING - Adjustment of cams microswitches Refer to Tab. 4 for cams functions. Fig. 42 - Berger STA4.5B037/4 Air damper position is set by means of the servocontrol cams. As for the setting, refer to the next table. The STA4.5B0.37 is not provided with the manual control for the air damper.

  • Page 22: Light Oil Pumps

    LIGHT OIL PUMPS mod. LO280 Pumps Pump Suntec AS47 A Viscosity 2 - 12 mm²/s (cSt) Fuel temperature 0 - 60 °C into the pump Maximum inlet pressure 14 bar max. - 0,45 barto avoid the separation between air and oil Return pressure 2 bar max.

  • Page 23: Pumps For Mod. Lo400

    Pumps for mod. LO400 Pump Suntec AL65 Viscosity range 2 ÷ 12 (cSt) mm Oil temperature 0 - 60 °C in the pump Inlet pressure 2 bar max. - 0,45 barto avoid the separation Minimum inlet pressure between air and oil Return pressure 2 bar max.

  • Page 24: Part Ii: Operation

    PART II: OPERATION MANUAL LIMITATIONS OF USE THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNECTED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDERED IMPROPER AND THEREFORE DANGEROUS. THE USER MUST GUARANTEE THE CORRECT FITTING OF THE APPLIANCE, ENTRUSTING THE INSTALLATION OF IT TO QUALIFIED PERSONNEL AND HAVING THE FIRST COMMISSIONING OF IT CARRIED OUT BY A SERVICE CENTRE AUTHORISED BY THE COMPANY MANUFACTURING THE BURNER.

  • Page 25: Operation

    FUNCIONAMIENTOOPERATION Single-stage burners Turn on the burner using the switch A on the control panel (Fig. 48: the control panel of the single stage burner is only pro- vided with the power switch and the fuse). Make sure that the apparatus is not in shutdown condition and if so, release by using the release button S on the burner cover (see Fig.

  • Page 26: Part Iii: Maintenance

    PART III: MAINTENANCE MANUAL At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is recommended to carry out the maintenance at the end of each heating season; in the case of continuous operation the maintenance is carried out every 6 months.
  • Page 27 Fig. 52 Fig. 51 Fig. 53 Fig. 54 Fig. 55 PART III: MAINTENANCE MANUAL...

  • Page 28: Removing Burner Components Plate

    Removing burner components plate Remove the combustion head (see “Removing the combustion head” a pagina 26). Remove the 7 screws V5 - V11 which fasten the components plate (Fig. 56). Remove the rod T from its housing as shown in Fig. 57. Hook the burner components plate as shown in Fig.

  • Page 29: Removing The Electrodes

    Removing the electrodes Remove the combustion head (see “Removing the combustion head” on page 26). Withdraw the screw VE and remove the electrodes from the support (Fig. 59 - Fig. 60). Fig. 59 Fig. 60 mod. LO280 DISASSEMBLY OF THE NOZZLE Before disassembly the nozzle, measure the real position “A”...

  • Page 30: Removing The Nozzles Lo400

    Fig. 62 Fig. 63 Removing the nozzles LO400 Unscrew the Allen screw VT and remove the combustion head TC. Unscrew the nozzles using two wrenches (16 and 24 mm), as shown in Fig. 66. Double stage burners Single stage burners Fig.

  • Page 31: Correct Position Of Electrodes And Combustion Head

    Correct position of electrodes and combustion head To ensure a good ignition, respect the measures in Fig. 67 - Fig. 68. Single stage burners (mod. LO280-LO400) and Double stage burners (mod. LO280) 8 ÷ 10 mm 4,5 ÷ 6 mm 10 mm 6.5 mm Fig.

  • Page 32: Troubleshooting

    TROUBLESHOOTING ● MAINS SWITCH OPEN ● FUSES INTERVENTION ● ● MAXIMUM PRESSURE SWITCH FAULT ● INTERVENTION OF THE FAN MOTOR THERMAL CUTOUT ● AUXILIARIES RELAY FUSES INTERVEN- TION ● ● ● ● ● FLAME CONTROL DEVICE FAULT ● SERVOCONTROL FAULT ●...

  • Page 33: Wiring Diagrams

    WIRING DIAGRAMS Wiring diagram 04-743 - LO280 Single stage burners PART III: MAINTENANCE MANUAL...
  • Page 34 PART III: MAINTENANCE MANUAL...
  • Page 35 Wiring diagram 18-116 - LO280 Double stage burners PART III: MAINTENANCE MANUAL...
  • Page 36 PART III: MAINTENANCE MANUAL...
  • Page 37 WIRING DIAGRAMS - Complete key - mod. LO400 LOW FLAME TIME METER HIGH FLAME TIME METER LIGHT OIL ELECTRO-VALVE PHOTORESISTOR FLAME DETECTOR FAN MOTOR LINE FUSE LINE FUSE BURNER LINE FUSE BURNER LINE SWITCH FAN MOTOR LINE SWITCH KA2.3 AUXILIARY RELAY KA2.4 AUXILIARY RELAY KM1.1...
  • Page 38 Wiring diagram 18-049 - LO400 Single stage burners PART III: MAINTENANCE MANUAL...
  • Page 39 Single stage burners 18-049 - LO400 Double-stage burners PART III: MAINTENANCE MANUAL...
  • Page 40 Connectors layout on printed board PART III: MAINTENANCE MANUAL...

  • Page 41: Spare Parts

    SPARE PARTS DESCRIPTION CODE LO280 Single stage LO280 Doulbe stage LO400 Single stage LO400 Doulbe stage LOA24 CONTROL BOX 2020445 2020445 2020445 2020445 ELECTRIC MOTOR 2180717 2180717 2180714 2180714 IGNITION TRANSFORMER 2170231 2170231 2170231 2170231 PUMP 2590130 2590152 2590170 2590170 IGNITION CABLES 6050153 6050153...
  • Page 42 PART III: MAINTENANCE MANUAL...

  • Page 43: Appendix

    APPENDIX - COMPONENTS SPECIFICATIONS LANDIS OIL BURNERS AUTOMATIC CONTROLLER LOA24 Wiring diagram of the programme To ensure correct wiring it is essential to observe local standards and follow the instructions of the burner manufacturer with regard to LOA... safety devices are intended for use solely with QRB... photore- assembly and start-up.
  • Page 44 Technical characteristics Commands in the event of operational interference Voltage 220V -15%..240V+10% or Stray light/premature ignition 100V -15%...110V+10% During pre-purge and/or pre-ignition there should be no flamesignal. If Frequency 50...60Hz +/- 6% there is a flame signal, eg from premature ignition due to a faulty sole- External fuse max.10A slow action noid, external light, short circuit in the photoresisto or wiring, malfunc-...
  • Page 45 LANDIS OIL BURNERS AUTOMATIC CONTROLLER LOA44 OPERATION Burners without fuel pre-heater Start-up, thermostat and pressure switches R, burner motor G and ignition transformer Z are all controlled at the same time. After about 25 seconds the solenoid is energised (in this period the flame amplifier is at maximum sensitivity).
  • Page 46 Technical characteristics Voltage 220V-15%..240V+10% or 100V-15%..110V+10% Frequency 50...60Hz _6% External fuse max.10 A, slow action Contact flow: terminal 1 max. 5A terminal 3 5A (incl. consumed cap. of motor and pre-heater) terminals 4,5& 6 max.2A terminal 8 max. 5A terminal 10 max.1A Permitted temperature operation...
  • Page 47 APPENDIX - COMPONENTS SPECIFICATIONS...

This manual is also suitable for:

Lo280Lo400

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