Related Manuals for Riello DB 12 LSE FGR
Summary of Contents for Riello DB 12 LSE FGR
- Page 1 Installation, use and maintenance instructions Dual fuel light oil/gas burner Two stage progressive or modulating operation CODE MODEL 20173707 DB 12 LSE FGR 20174375 (1) - 11/2019...
- Page 2 Original instructions...
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Page 3: Table Of Contents
Contents Information and general warnings............................3 Information about the instruction manual ........................3 1.1.1 Introduction.................................. 3 1.1.2 General dangers................................3 1.1.3 Other symbols ................................3 1.1.4 Delivery of the system and the instruction manual...................... 4 Guarantee and responsibility............................4 Safety and prevention................................5 Introduction.................................. - Page 4 Contents Start-up, calibration and operation of the burner ........................26 Notes on safety for the first start-up ...........................26 Combustion head adjustment ............................26 Adjustments prior to ignition (light oil) ........................26 5.3.1 Nozzle ..................................26 Burner ignition (light oil) .............................27 Adjustments prior to ignition (gas) ..........................27 Ignition pilot ................................28 Burner start-up (gas) ..............................28 Burner ignition ................................28...
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Page 5: Information And General Warnings
Information and general warnings Information and general warnings Information about the instruction manual 1.1.1 Introduction WARNING: MOVING PARTS The instruction manual supplied with the burner: This symbol indicates that you must keep limbs is an integral and essential part of the product and must not away from moving mechanical parts;... -
Page 6: Delivery Of The System And The Instruction Manual
Information and general warnings 1.1.4 Delivery of the system and the instruction The system supplier must carefully inform the user about: – the use of the system; manual – any further tests that may be required before activating the When the system is delivered, it is important that: system;... -
Page 7: Safety And Prevention
Safety and prevention Safety and prevention Introduction The burners have been designed and built in compliance with the type and pressure of the fuel, the voltage and frequency of the current regulations and directives, applying the known technical electrical power supply, the minimum and maximum deliveries for safety rules and envisaging all the potential danger situations. -
Page 8: Technical Description Of The Burner
Technical description of the burner Technical description of the burner Burner designation Series: DB Size : 4 - 6 - 9 - 12 - 16 - 20 Fuel: Light oil Heavy oil Heavy oil with assisted atomisation Natural gas Light oil/ LPG Light oil / Natural gas Heavy oil / Natural gas Heavy oil / LPG... -
Page 9: Models Available
Technical description of the burner Models available Designation Voltage Code DB 12 LSE FGR TC FS1 A0 FB T150 230 V / 50 Hz 20173707 Tab. A Burner categories - Countries of destination Country of destination Gas category SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO 2ELL (43.46 ÷... -
Page 10: Maximum Dimensions
Technical description of the burner Maximum dimensions The dimensions of the burner are given in Fig. 1. 20175328 Fig. 1 Model DB 12 LSE FGR DN80 1443 Tab. E Flange dimensions Air duct connection Boiler fixing Gas supply 4 7 0... -
Page 11: Firing Rate
Technical description of the burner Firing rate The MAXIMUM OUTPUT is chosen from within the continuous The firing rate value (Fig. 3) has been obtained diagram area (Fig. 3). considering an ambient temperature of 20 °C, an The MINIMUM OUTPUT must not be lower than 1700 kW as atmospheric pressure of 1013 mbar (approx. -
Page 12: Air Side Pressure Drop (Measured Upstream Of The Damper With Complete Opening)
Technical description of the burner 3.10 Air side pressure drop (measured upstream of the damper with complete opening) The pressure curves refer to the combustion head adjustment From the diagram, for an output of 9000 kW, the total pressure drop obtained at the head is equal to: p conditions. -
Page 13: Gas Side Pressure Drop
Technical description of the burner 3.11 Gas side pressure drop Gas pressure on the basis of the maximum output developed by the burner is given by the curves in Fig. 6. Add the pressure of the combustion chamber in It represents the pressure drop in the combustion head. mbar to the value of the combustion head drop. -
Page 14: Description Of Burner Components
Technical description of the burner 3.12 Description of burner components 20175329 Fig. 8 Box with terminal board for electrical wiring 14 Boiler connection flange Air box 15 Air damper position indicator Cover 16 Oil delivery pressure gauge Maximum gas pressure switch 17 Minimum pressure switch on oil delivery line Gas output regulator 18 Oil delivery safety valves... -
Page 15: Servomotor (Sqm48.4
Technical description of the burner 3.14 Servomotor (SQM48.4..) Important notes avoid accidents, material environmental damage, observe following instructions! ATTENTION Avoid opening, modifying or forcing the actuators. All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ... -
Page 16: Installation
Installation Installation Notes on safety for the installation After carefully cleaning all around the area where the burner is to The installation of the burner must be carried out be installed, and arranging for the environment to be illuminated by qualified personnel, as indicated in this manual correctly, proceed with the installation operations. -
Page 17: Operating Position
Installation Operating position The burner is designed to work only in positions Any other position could compromise the 1 and 4 (Fig. 11). correct operation of the appliance. Installation 1 is preferable, as it is the only ... -
Page 18: Preparing The Boiler
The seal between burner and boiler must be However, the refractory wall must not extend beyond the end of airtight. the combustion head of the burner. ATTENTION Min. Max. DB 12 LSE FGR Tab. H REFRACTORY 20175332 M A X . 5 0 0 Fig. 15 20174375... -
Page 19: Fgr Duct System
Installation FGR duct system – Normally the duct would connect to the stack as shown in be required on the bottom of the duct 8)(Fig. 16), to remove Fig. 16, with a 45° cut facing the flue gas flow and with the condensate. -
Page 20: Nozzle Lance
Installation 4.10 Nozzle lance To replace the seals 1)-2)-3)-4)(Fig. 17), the purchase of O-Ring kit code 20019166 is recommended. Return from modulator ARIA/AIR D9926 Fig. 17 4.10.1 Nozzles (mechanical atomization) APPROXIMATE NOZZLE DELIVERY - 30 bar (5 cSt) Nozzle type: (Bergonzo CT3AA) Complete range of nozzles: Bergonzo C-3-5 45°... -
Page 21: Light Oil Supply
Installation 4.12 Light oil supply Explosion danger due to fuel leaks in the The fuel supply line must be installed by qualified presence of a flammable source. personnel, in compliance with current standards Precautions: avoid knocking, attrition, sparks and and laws. ATTENTION heat. -
Page 22: Adjustment And Calibration Of The Oil Circuit And Of The Air Output
Installation 4.12.2 Adjustment and calibration of the oil circuit VIEW FROM MOTOR SIDE and of the air output Rotation direction to the right The oil supply system requires that suction of the fuel occurs from a degassing tank, using a self-priming pump, and that the fuel is sent to the burner at the correct pressure. -
Page 23: Priming Pump (Example)
Installation 4.12.3 Priming pump (example) Before starting the burner, make sure that the tank return line is not clogged. Obstructions in the line could cause the sealing ATTENTION organ located on the pump shaft to break. In order for the pump (Fig. 24) to be able to self-prime, the screw 4) must be loosened to purge the air in the suction line. -
Page 24: Gas Supply
Installation 4.13 Gas supply Explosion danger due to fuel leaks in the presence of a flammable source. Precautions: avoid knocking, attrition, sparks and heat. Make sure the fuel shut-off valve is closed before performing any operation on the burner. The fuel supply line must be installed by qualified personnel, in compliance with current standards and laws. -
Page 25: Gas Train
Installation 4.13.3 Gas train 4.13.5 Gas pressure Type-approved in accordance with EN 676 and supplied Tab. I indicates the pressure drops of the combustion head and separately from the burner. gas butterfly valve depending on the burner operating output. 1 p (mbar) 2 p (mbar) 4.13.4 Gas train installation G 20... -
Page 26: Pilot - Gas Train Connection
Installation To calculate the required gas pressure at test point 1)(Fig. 27 on page 23), set the maximum modulating output required from the burner operation: – find the nearest output value in Table I on page 23 for the burner in question. –... -
Page 27: Electrical Connections
Installation 4.14 Electrical connections Notes on safety for the electrical wiring The electrical wiring must be carried out with the electrical supply disconnected. Electrical wiring must be made in accordance with the regulations currently in force in the country of destination and by qualified personnel. -
Page 28: Start-Up, Calibration And Operation Of The Burner
Start-up, calibration and operation of the burner Start-up, calibration and operation of the burner Notes on safety for the first start-up The first start-up of the burner must be carried out Check the correct working of the adjustment, by qualified personnel, as indicated in this manual command and safety devices. -
Page 29: Burner Ignition (Light Oil)
Start-up, calibration and operation of the burner Burner ignition (light oil) Set the selector on the main panel to “ON”. Once the following adjustments have been made, the ignition of the burner must generate a noise similar to the noise generated Set the fuel selector to “OIL”... -
Page 30: Ignition Pilot
Start-up, calibration and operation of the burner Ignition pilot For correct functioning, adjust the gas pressure (measured on the socket located on the valve) to between 30 ÷ 50 mbar. mbar 12.3 Tab. K Check pilot flame stability before starting up the main burner. -
Page 31: Combustion Air Adjustment
Start-up, calibration and operation of the burner Combustion air adjustment 5.9.2 Pressure switch adjustment Fuel/combustion air synchronisation is done with the relevant servomotors (air and gas) by logging a calibration curve by Being that the values of the reference pressures cannot be means of the electronic cam. -
Page 32: Final Adjustment Of The Pressure Switches
Start-up, calibration and operation of the burner 5.10 Final adjustment of the pressure switches 5.10.1 Air pressure switch Adjust the air pressure switch after performing all other burner adjustments with the air pressure switch set to the start of the scale (Fig. -
Page 33: Final Checks (With Burner Operating)
Start-up, calibration and operation of the burner 5.11 Final checks (with burner operating) Open the thermostat/pressure switch TL The burner must stop Open the thermostat/pressure switch TS Turn the gas maximum pressure switch knob to the ... -
Page 34: Maintenance
Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, Before carrying out any maintenance, cleaning or checking safety, yield and duration of the burner. operations: It allows you to reduce consumption and polluting emissions and to keep the product in a reliable state over time. -
Page 35: Flame Sensor Removal
Maintenance Boiler 6.2.4 Flame sensor removal Clean the boiler as indicated in its accompanying instructions, To remove the flame sensor 1)(Fig. 37) it is necessary to: especially to maintain all the original combustion characteristics. disconnect it from the power supply; ... -
Page 36: Opening The Burner
Maintenance Opening the burner 6.3.1 Access to head internal part Disconnect the electrical supply from the burner In order to reach inside the combustion head proceed as follows: by means of the system main switch. disconnect the oil tubes 1)-2)(Fig. 38) and the air tube 3); DANGER ... -
Page 37: Faults - Possible Causes - Solutions
Faults - Possible causes - Solutions Faults - Possible causes - Solutions If faults arise in ignition or operations, the burner performs a In the event the burner stops, in order to prevent "safety stop", which is signalled by the red burner lockout LED. any damage to the installation, do not unblock the The display visualises alternately the lockout code and the burner more than twice in a row. - Page 38 Faults - Possible causes - Solutions GAS OPERATION Problem Probable cause Suggested remedy The burner does not start • No power supply ......Turn off switches - Check wiring •...
- Page 39 Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references Operational layout Operational layout Operational layout Indication of references / 1 . A 1 Sheet no. Coordinates 20174375...
- Page 40 Appendix - Electrical panel layout 20174375...
- Page 41 Appendix - Electrical panel layout 20174375...
- Page 42 Appendix - Electrical panel layout 20174375...
- Page 43 Appendix - Electrical panel layout Wiring layout key Air pressure switch Maximum gas pressure switch Minimum oil pressure switch Maximum oil pressure switch Oil lance proximity switch Flame sensor SM... Servomotors Ignition transformer Pilot valve 1 Pilot valve 2 Safety valve on oil return 1 Safety valve on oil return 2 Safety valve on oil delivery 1 Safety valve on oil delivery 2...
- Page 44 RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.it http:// www.riello.com Subject to modifications...