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Riello RLS 650/M MX Installation, Use And Maintenance Instructions

Dual fuel light oil/gas burner progressive two-stage or modulating operation
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Installation, use and maintenance instructions
Dual fuel light oil/gas burner
GB
Progressive two-stage or modulating operation
CODE
MODEL
TYPE
20026139
RLS 650/M MX
1310T
20027761 (10) - 01/2017

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Summary of Contents for Riello RLS 650/M MX

  • Page 1 Installation, use and maintenance instructions Dual fuel light oil/gas burner Progressive two-stage or modulating operation CODE MODEL TYPE 20026139 RLS 650/M MX 1310T 20027761 (10) - 01/2017...
  • Page 2 Translation of the original instructions...

  • Page 3: Table Of Contents

    Contents Declarations....................................3 Information and general instructions............................4 Information about the instruction manual ........................4 2.1.1 Introduction.................................. 4 2.1.2 General dangers................................4 2.1.3 Other symbols ................................4 2.1.4 Delivery of the system and the instruction manual...................... 5 Guarantee and responsibility............................5 Safety and prevention................................
  • Page 4 Contents 5.13.3 Gas train installation ..............................26 5.13.4 Gas pressure ................................26 5.13.5 Pilot - gas train connection............................27 5.13.6 Ignition pilot burner ..............................27 5.14 Electrical wiring ................................28 5.14.1 Entry for power cables and external leads .........................28 5.15 Calibration of the thermal relay ..........................29 Start-up, calibration and operation of the burner ........................30 Notes on safety for the first start-up ...........................30 Adjustments before first firing ............................30...

  • Page 5: Declarations

    The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015. Manufacturer's Declaration RIELLO S.p.A. declares that the following products comply with the NOx emission limits specified by German standard “1. BImSchV release 26.01.2010”. Product...

  • Page 6: Information And General Instructions

    Information and general instructions Information and general instructions Information about the instruction manual 2.1.1 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 7: Delivery Of The System And The Instruction Manual

    Information and general instructions  The system supplier must carefully inform the user about: 2.1.4 Delivery of the system and the instruction – 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 8: 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 rules of safety and envisaging all the potential danger situations.

  • Page 9: Technical Description Of The Burner

    BASIC DESIGNATION EXTENDED DESIGNATION Models available Designation Electrical supply Starting Code RLS 650/M MX TC FS1 3/400/50 Star/Delta 20026139 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: Technical Data

    Technical description of the burner Technical data Model RLS 650/M MX Type 1301T Output 1430/3000 - 6550 min - max Delivery kg/h 121/253 - 552 - LIGHT OIL, viscosity at 20 °C: 6 mm /s (1.5 °E - 6 cSt)

  • Page 11: Burner Weight

    Technical description of the burner Burner weight The weight of the burner complete with its packaging is shown in Tab. D. Model RLS 650/M MX Tab. D D10541 Fig. 1 Overall dimensions The maximum dimensions of the burner are given in (Fig. 2).

  • Page 12: Firing Rate

    Technical description of the burner Firing rate MAXIMUM OUTPUT must be selected in the hatched area of the The firing rate area values (Fig. 3) have been ob- diagram (Fig. 3). tained considering a surrounding temperature of MINIMUM OUTPUT must not be lower than the minimum limit 20 °C, and an atmospheric pressure of 1013 mbar shown in the diagram.

  • Page 13: Burner Description

    Technical description of the burner 4.10 Burner description D10551 Fig. 5 Lifting eyebolts 22 Air pressure test point pressure test point “+” 23 Pump Fan motor 24 Pump motor Servomotor 25 Minimum oil pressure switch Gas pressure test point 26 Maximum oil pressure switch Combustion head 27 Pressure gauge for pressure on nozzle return Ignition pilot...

  • Page 14: Description Of Panel Board

    Technical description of the burner 4.11 Description of panel board 10 11 D9144 Fig. 6 Terminal strip for kits 20 Plug-socket valve /pump motor Relay outlet - clean contacts 21 Fan motor thermal cut-out Ignition transformer 22 Pump motor contactor and thermal cut-out Bracket for mounting the power regulator RWF 23 Oil/gas selection relay Stop push-button...

  • Page 15: Control Box (Lfl1.333

    The control box LFL1.333... is a safety device! WARNING Avoid opening or modifying it, or forcing its opera- tion. Riello S.p.A. cannot assume any responsibil- ity for damage resulting from unauthorised interventions!  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel.

  • Page 16: Servomotor (Sqm10.1

    Technical description of the burner 4.14 Servomotor (SQM10.1..) Warnings To avoid accidents, material or environmental damage, observe the following instructions! Avoid opening, modifying or forcing the actua- WARNING tors.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ...

  • Page 17: Installation

    Installation Installation Notes on safety for the installation After carefully cleaning all around the area where the burner will The installation of the burner must be carried out be installed, and arranging the correct lighting of the environ- by qualified personnel, as indicated in this manual ment, proceed with the installation operations.

  • Page 18: Operating Position

    For boilers with front flue passes 1)(Fig. 13) or flame inversion RLS 650/M MX M 18 chambers, protective fettling in refractory material 5) must be in- serted between the boiler fettling 2) and the blast tube 4).

  • Page 19: Securing The Burner To The Boiler

    Installation Securing the burner to the boiler Prepare an adequate system of hoisting by hooking onto the rings 3)(Fig. 13).  Slip the thermal protection (standard equipment) onto the blast tube 4)(Fig. 13).  Place entire burner on the boiler hole arranged previously, see (Fig.

  • Page 20: Nozzle Installation

    5.10.1 Recommended nozzle 267 standard. In order to guarantee that emissions do not vary, • Fluidics type N2 50° recommended and/or alternative nozzles specified by Riello in Alternatively: the Instruction and warning booklet should be used. • Bergonzo type B5 60° SA It is advisable to replace the nozzle once a year during periodical maintenance.

  • Page 21: Combustion Head Setting

    Installation 5.11 Combustion head setting In addition to varying air flow depending on the output requested, the air gate valve servomotor 4) (Fig. 5) by means of a lifting as- sembly - varies the setting of the combustion head. This system allows an optimal setting even at a minimum firing rate.

  • Page 22: Adjustment At The Maximum Output (For Gas)

    Installation 5.11.1 Adjustment at the maximum output (for GAS)  unscrew the screws and remove the 8 tangential tubes 1); The adjustment at the maximum output requires the disassembly  unscrew the 4 screws and disassemble the diffuser disc 2); of the 6 nozzles as indicated in Fig.

  • Page 23: Light Oil Supply

    Installation 5.12 Light oil supply 5.12.2 The loop circuit Explosion danger due to fuel leaks in the pres- A loop circuit consists of a loop of piping departing from and re- ence of a flammable source. turning to the tank with an auxiliary pump that circulates the fuel Precautions: avoid knocking, attrition, sparks and under pressure.

  • Page 24: Hydraulic Connections

    Installation 5.12.3 Hydraulic connections Insert the hose connections with the supplied seals into the con- nections and screw them down. The pumps are equipped with a by-pass that connects return line Take care that the hoses are not stretched or twisted during in- with suction line.

  • Page 25: Pump Priming

    Installation 5.12.5 Pump priming The a.m. operation is possible because the pump is already full of fuel when it leaves the factory. If Before starting the burner, make sure that the tank the pump has been drained, fill it with fuel through return line is not clogged.

  • Page 26: Burner Calibration

    Installation Calibration pressure on delivery line 5.12.7 Burner calibration To adjust the delivery pressure, operate on the pump as de- Note scribed on pag. 23. It is advisable to first set the burner for operating on oil and then Example: for gas.

  • Page 27: Gas Feeding

    Installation 5.13 Gas feeding Explosion danger due to fuel leaks in the pres- MBC “threaded” ence of a flammable source. Precautions: avoid knocking, attrition, sparks and DANGER heat. Make sure the fuel interception tap is closed be- fore performing any operation on the burner. The fuel supply line must be installed by qualified personnel, in compliance with current standards and laws.

  • Page 28: Gas Train

    Installation 5.13.2 Gas train 5.13.4 Gas pressure Approved according to standard EN 676 and provided separately Tab. K indicates the pressure drop of the combustion head and from the burner. the gas butterfly valve depending on the operating output of the burner.

  • Page 29: Pilot - Gas Train Connection

    Installation Example with natural gas G20: 5.13.5 Pilot - gas train connection Operation at maximum modulating output The burner is fitted with a dedicated gas train that is fixed to the Gas pressure at an output of 6000 kW = 27.8 mbar pipe coupling.

  • Page 30: Electrical Wiring

    Installation 5.14 Electrical wiring 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 31: Calibration Of The Thermal Relay

    Installation 5.15 Calibration of the thermal relay The thermal relay (Fig. 34) is used to avoid damage to the motor owing to a strong increase in absorption or the lack of a phase. For the calibration 2), refer to the table given in electrical layout (Electrical connections set by installer).

  • Page 32: 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, com- by qualified personnel, as indicated in this manual mand and safety devices.

  • Page 33: Burner Firing

    Start-up, calibration and operation of the burner Burner firing Having completed the checks indicated in the previous heading, In this case increase gas firing delivery. the burner should fire. The arrival of gas at the sleeve is indicated by the U-type manom- If the motor starts but the flame does not appear and the control eter (Fig.

  • Page 34: Intermediate Outputs

    Start-up, calibration and operation of the burner 6.6.3 Intermediate outputs Once you have adjusted the burner’s maximum and minimum output, the next step is to adjust air and gas at the various inter- mediate servomotor positions. You can switch from one position to the next by holding selector 2) (Fig.

  • Page 35: Procedures For Setting The Burner

    Start-up, calibration and operation of the burner 6.7.1 Procedures for setting the burner automatic return selection switch on the control panel. Stop when the servomotor has turned by 15° and then effect a  Fit the suitable nozzle to obtain the maximum required deliv- new adjustment using the variable profile air cam.

  • Page 36: Adjustment Pressure Switches

    Start-up, calibration and operation of the burner Adjustment pressure switches 6.9.1 Air pressure switch - CO check Adjust the air pressure switch after having performed all other burner adjustments with the air pressure switch set to the start of the scale (Fig. 41). With the burner operating at minimum output, increase adjust- ment pressure by slowly turning the relative knob clockwise until the burner locks out.

  • Page 37: Operation Sequence Of The Burner

    Start-up, calibration and operation of the burner 6.10 Operation sequence of the burner 6.10.1 Burner starting 6.10.2 Steady state operation  Burner without output regulator • 0s : Thermostat/pressure switch TL closes. At the end of the starting cycle, the servomotor control then pass- Fan motor starts.

  • Page 38: Final Checks (With The Burner Working)

    Start-up, calibration and operation of the burner 6.11 Final checks (with the burner working)  Open the thermostat/pressure switch TL:  Open the thermostat/pressure switch TS: the burner must stop.  Rotate the maximum gas pressure switch knob to the mini- mum end-of-scale position.

  • Page 39: Maintenance

    Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, safety, yield and duration of the burner. Disconnect the electrical supply from the burner It allows you to reduce consumption and polluting emissions and by means of the main system switch.
  • Page 40 Maintenance LIGHT OIL OPERATION GAS OPERATION Filters (Fig. 47) Gas leaks Check the filtering baskets on line 1) and at nozzle 2) present in Make sure that there are no gas leaks on the pipework between the system. the gas meter and the burner. Clean or replace if necessary.

  • Page 41: Opening The Burner

    Maintenance Opening the burner  Remove the tie rods 1) and 6)(Fig. 48) of the head move- ment and damper opening lever by loosening nuts 2). Disconnect the electrical supply from the burner  Disconnect servomotor socket 3). by means of the main system switch. ...

  • Page 42: Faults - Probable Causes - Solutions

    Faults - Probable causes - Solutions Faults - Probable causes - Solutions The LFL1.333... control box is equipped with a lockout indicator Lockout indicator (Fig. 49) that turns during the start-up programme, and is visible Start-up sequence from the small lockout window. b-b’...

  • Page 43: Light Oil Operation

    Faults - Probable causes - Solutions Light oil operation Symbol Problem Possible cause Recommended remedy Limiter or safety control device open Adjust or replace Control box lockout Release Fan motor lockout Release the thermal relay Adjust the pressure switch or eliminate Intervention of maximum oil pressure switch overpressure No electrical power supply...
  • Page 44 Faults - Probable causes - Solutions Symbol Problem Possible cause Recommended remedy Little air Adjust the fan head and damper Incorrect pump pressure Adjust Nozzle filter clogged Clean or replace Smoke in flame (dark Bacharach) Insufficient boiler room ventilation openings Increase Dirty or worn nozzle Replace...

  • Page 45: Gas Operation

    Faults - Probable causes - Solutions Gas operation Symbol Problem Possible cause Recommended remedy No electrical power supply Close all switches and check connections A limit or safety thermostat/pressure switch Adjust or replace open Control box lockout Release the control box Control box fuse interrupted Replace it Incorrect electrical wiring...
  • Page 46 Faults - Probable causes - Solutions Symbol Problem Possible cause Recommended remedy The VP1 solenoid lets too little gas through Increase The solenoid VP1 or VP2 does not open Replace the coil or the rectifier panel Gas pressure too low Increase pressure at governor Ignition electrode incorrectly adjusted Adjust it...

  • Page 47: Appendix - Accessories

    Analogic signal converter; • the Potentiometer Burner Potentiometer Analogic signal converter Type Code Type Code RLS 650/M MX ASZ... 3010402 E5202 3010390 Potentiometer kit for the indication of load position Burner Code RLS 650/M MX 3010402 Soundproofing box kit...

  • Page 48: B Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts References layout Layout of unifilar output Operational layout star-powered starter/delta-powered starter Operational layout LFL 1... Operational layout LFL 1... Operational layout LFL 1... Operational layout LFL 1... Operational layout RWF50...
  • Page 49 Appendix - Electrical panel layout 20027761...
  • Page 50 Appendix - Electrical panel layout 20027761...
  • Page 51 Appendix - Electrical panel layout 20027761...
  • Page 52 Appendix - Electrical panel layout 20027761...
  • Page 53 Appendix - Electrical panel layout 20027761...
  • Page 54 Appendix - Electrical panel layout 20027761...
  • Page 55 Appendix - Electrical panel layout 20027761...
  • Page 56 Appendix - Electrical panel layout 20027761...
  • Page 57 Appendix - Electrical panel layout 20027761...
  • Page 58 Appendix - Electrical panel layout 20027761...
  • Page 59 Appendix - Electrical panel layout Wiring layout key Control box Safety pressure switch/thermostat Internal output power regulator RWF Flame sensor External output power regulator RWF Light oil operation valve Probe with current output Pilot valve 1 Device with current output for editing remote setpoint Pilot valve 2 Pressure probe Light oil return valve...
  • Page 60 RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.it http:// www.riello.com Subject to modifications...

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