Riello RLS 310/E O2 MX Installation, Use And Maintenance Instructions

Dual fuel gas oil/ gas burners
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Installation, use and maintenance instructions
Dual fuel gas oil/ gas burners
GB
Modulating operation
CODE
20182632
20182634
20182635
20182636
MODEL
RLS 310/E O2 MX
RLS 410/E O2 MX
RLS 510/E O2 MX
RLS 610/E O2 MX
TYPE
1161T1
1162T1
1163T1
1164T1
20182649 (2) - 11/2021

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Summary of Contents for Riello RLS 310/E O2 MX

  • Page 1 Installation, use and maintenance instructions Dual fuel gas oil/ gas burners Modulating operation CODE MODEL TYPE 20182632 RLS 310/E O2 MX 1161T1 20182634 RLS 410/E O2 MX 1162T1 20182635 RLS 510/E O2 MX 1163T1 20182636 RLS 610/E O2 MX 1164T1...
  • Page 2 Translation of the original instructions...
  • Page 3: Table Of Contents

    Contents Declarations....................................3 Information and general warnings............................4 Information about the instruction manual ........................4 Guarantee and responsibility............................5 Safety and prevention................................6 Introduction.................................. 6 Personnel training ............................... 6 Technical description of the burner ............................7 Burner designation ..............................7 Models available................................
  • Page 4 Contents Air / fuel adjustment ..............................37 Final adjustment of the pressure switches .........................38 6.10 Pressure switch adjustment ............................39 6.11 Operation ...................................40 6.12 Ignition failure................................40 6.13 Burner flame goes out during operation........................40 6.14 Stopping of the burner ...............................40 6.15 Final checks ................................41 6.16 Pump motor lock-out ..............................41 6.17...
  • Page 5: Declarations

    Legnago, 03.05.2021 Research & Development Director RIELLO S.p.A. - Burner Department Mr. F. Maltempi Manufacturer's Declaration RIELLO S.p.A. declares that the following products comply with the NOx emission limits specified by German standard “1. BIm- SchV revision 26.01.2010”. Product Type Model...
  • Page 6: Information And General Warnings

    Information and general warnings Information and general warnings 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: Guarantee And Responsibility

    Information and general warnings 2.1.4 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 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

    Technical description of the burner Technical description of the burner Burner designation Range: Fuel: Natural gas Light oil Gas oil / Methane Heavy oil Size Adjustment : E Electronic cam Electronic cam and variable speed (with Inverter) Mechanical cam Proportional air/gas valve Electronic cam and suitable for Oxygen Control (O EV O Electronic cam and variable speed (with Inverter) and suitable for Oxygen Control O...
  • Page 10: Models Available

    RO, SE, SI, SK, TR 2ELL 2E(R) LU - PL Tab. B Technical data Model RLS 310/E O2 MX RLS 410/E O2 MX RLS 510/E O2 MX RLS 610/E O2 MX Type 1161T1 1162T1 1163T1 1164T1 Power 600/1200 - 3600...
  • Page 11: Electrical Data

    Technical description of the burner Electrical data DIRECT START UP Model RLS 310/E O2 MX RLS 410/E O2 MX Main electrical supply 3 ~ 400V+/-10% 50 Hz Fan motor IE3 2920 2930 220-240/380-415 230/400 25.2 - 14.5 28.6 - 16.5 Absorbed electrical power 10.9...
  • Page 12: Burner Weight

    Technical description of the burner Burner weight The weight of the burner complete with its packaging is shown in Tab. F. Model RLS 310/E O2 MX RLS 410/E O2 MX RLS 510/E O2 MX 20086678 RLS 610/E O2 MX Tab. F Fig.
  • Page 13: Firing Rates

    25. Model RLS 310/E O2 MX Pre-calibration of the combustion head only for the burner model RLS 310/E O2 MX: RLS 410/E O2 MX RLS 510/E O2 MX If the maximum burner output of the burner falls...
  • Page 14: Test Boiler

    Technical description of the burner Test boiler The burner/boiler combination does not pose any problems if the The firing rates were set in relation to special test boilers, accord- boiler is EC approved and its combustion chamber dimensions ing to EN 676 regulations. are similar to those indicated in the diagram (Fig.
  • Page 15: Burner Description

    Technical description of the burner 4.11 Burner description ASSEMBLY VIEW 20185169 Fig. 5 Lifting rings 30 Transparent protection 31 Pump Fan motor 32 Pump motor Air damper servomotor 33 Minimum oil pressure switch Combustion head gas pressure test point 34 Maximum oil pressure switch Combustion head 35 Nozzle return pressure gauge Ignition electrodes...
  • Page 16: Electrical Panel Description

    Technical description of the burner 4.12 Electrical panel description 20185178 Fig. 6 Electrical control box 29 Flame sensor “0 - AUTO” selector 30 Fuel servomotor Emergency button 31 Maximum gas pressure switch sheath Earth terminal 32 Air servomotor Supply cables and external connections passage 33 Safety valve sheath (VS1) See section “Electrical wiring”...
  • Page 17: Control Box For The Air/Fuel Ratio (Lmv52

    Technical description of the burner 4.13 Control box for the air/fuel ratio (LMV52...) Warnings To avoid accidents, material or environmental damage, observe the following instructions! The LMV52 control box... is a safety device! Avoid WARNING opening or modifying it, or forcing its operation. Ri- ello S.p.A.
  • Page 18 Technical description of the burner Electrical connection of flame sensor It is important for signal transmission to be almost totally free – Line capacitance reduces the magnitude of the flame signal. of any disturbances or loss: – Use a separate cable. •...
  • Page 19: 4.14 Servomotor

    Technical description of the burner 4.14 Servomotor Warnings To avoid accidents, material or environmen- tal damage, observe the following instruc- tions! WARNING Avoid opening, modifying or forcing the ac- tuators.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ...
  • Page 20: Pll52

    Technical description of the burner 4.15 PLL52... module (optional) Warnings To avoid accidents, material or environmen- tal damage, observe the following instruc- tions! WARNING Avoid opening, modifying or forcing the de- vice.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ...
  • Page 21: Oxygen Sensor Qgo20

    Technical description of the burner 4.16 Oxygen sensor QGO20 ... (optional) Warnings To avoid accidents, material or environmen- S9895 tal damage, observe the following instruc- tions! WARNING Avoid opening, modifying or forcing the oxy- gen sensor.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel.
  • Page 22 Technical description of the burner 4.16.1 Technical data QGO20 Operating voltage of measuring cell’s: – QGO20.000D27 AC 230 V ±15 % – QGO20.000D17 AC 120 V °15 % (only with LMV52 ... with PLL52...) Mains frequency: 50...60 Hz ±6 % Power consumption: Max.
  • Page 23: 4.17 Calibration Of The Thermal Relay

    Technical description of the burner 4.17 Calibration of the thermal relay The thermal relay serves to avoid damage to the motor due to an excessive absorption increase or if a phase is missing. For calibration 2)(Fig. 11), see the table in the wiring diagram. To reset, in case of an intervention of the thermal relay, press the “RESET”...
  • Page 24: 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 25: Operating Position

    Ø chamber, a protection in refractory material 5) must be inserted between the boiler fettling 2) and the blast tube 4). RLS 310/E O2 MX The refractory can have a conical shape (minimum 60°). RLS 410/E O2 MX This protective fettling must not compromise the extraction of the RLS 510/E O2 MX blast tube.
  • Page 26: Access To Head Internal Part

    Installation Access to head internal part The burner leaves the factory set for opening to the right, there- fore maintaining the pin 1)(Fig. 16) in its housing. To open the burner towards the right, proceed as follows: A Remove the screws 2); B Open the burner to a maximum of 100-150 mm by rotating around the hinge and release the cables of the electrodes 5);...
  • Page 27: Gas Butterfly Valve

    Maximum burner output (kW) Fig. 18 The combustion head can be adjusted within the following fields: RLS 310/E O2 MX: 0 - 11; WARNING RLS 410/E O2 MX: 5 - 16; RLS 510/E O2 MX: 2 - 16; RLS 610/E O2 MX: 0 - 6.
  • Page 28: Nozzle Installation

    Installation 5.11 Nozzle installation 5.11.1 Recommended nozzle The burner complies with the emission requirements of the EN 267 standard. • Fluidics type N2 45° In order to guarantee that emissions do not vary, recommended Alternatively: and/or alternative nozzles specified by the Manufacturer in the In- •...
  • Page 29: Light Oil Supply

    Installation 5.12 Light oil supply 5.12.1 Double-pipe circuit 5.12.2 The loop circuit The burner is equipped with a self-priming pump which is capable A loop circuit consists of a loop of piping departing from and re- of feeding itself within the limits listed in the table at the side. turning to the tank with an auxiliary pump that circulates the fuel under pressure.
  • Page 30 Installation 5.12.4 Priming pump 5.12.5 Pressure variator The pressure variator (Fig. 24), allows the pressure on the return Before starting the burner, make sure that the tank line of the nozzle to be varied according to the required output. return line is not clogged. The pressure on the return line is adjusted by varying a section Obstructions in the line could cause the sealing WARNING...
  • Page 31 Installation 5.12.6 Hydraulic circuit diagram 20086806 Fig. 25 Key (Fig. 25) OPERATION Pump suction Pre-purging phase: Pump return line and nozzle return line valves 5), 6), 13) and 14) closed. Pump by-pass screw Ignition and operation phase: Pump pressure regulator valves 5), 6), 13) and 14) open.
  • Page 32: Gas Pressures

    Installation 5.13 Gas pressures Explosion danger due to fuel leaks in the pres- MBC “threaded” ence of a flammable source. Precautions: avoid knocking, attrition, sparks and 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 33 Installation 5.13.2 Gas train Approved according to standard EN 676 and provided separately Make sure that the gas train is properly installed from the burner. by checking for any fuel leaks. 5.13.3 Gas train installation The operator must use the required equipment during installation.
  • Page 34 Installation 5.13.4 Gas pressure 1 p (mbar) 2 p (mbar) Tab. Q indicates the minimum pressure drops along the gas sup- G 20 G 25 G 20 G 25 ply line, depending on the maximum burner output. 1200 The values shown in Tab. Q refer to: 1467 –...
  • Page 35: 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 36 Installation 5.14.1 Supply cables and external connections passage All the cables to be connected to the burner must be threaded through cable grommets. The use of the cable grommets can take various forms; by way of example see Fig. 31. 20185186 Key (Fig.
  • Page 37: 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 38: Adjustments Prior To Ignition (Gas)

    Start-up, calibration and operation of the burner Adjustments prior to ignition (gas) Combustion head adjustment has already been already de- Before starting up the burner, it is good practice to scribed in the section “Combustion head adjustment” on page 25. adjust the gas train so that ignition takes place in In addition, the following adjustments must also be made: conditions of maximum safety, i.e.
  • Page 39: Air / Fuel Adjustment

    Start-up, calibration and operation of the burner Air / fuel adjustment 6.8.4 Output upon ignition Air/fuel synchronisation is carried out with the relevant air, gas and light oil servomotors by logging a calibration curve using the Ignition must occur at a lower output than the max. operation out- electronic cam.
  • Page 40: Final Adjustment Of The Pressure Switches

    Start-up, calibration and operation of the burner Final adjustment of the pressure switches 6.9.1 Air pressure switch on the graduated scale corresponds with the arrow pointing downwards, and so recovering the hysteresis of the pressure Adjust the air pressure switch (Fig. 34) after performing all other switch (shown by the white mark on a blue background, between burner adjustments with the air pressure switch set to the start of the two arrows).
  • Page 41: Pressure Switch Adjustment

    Start-up, calibration and operation of the burner 6.10 Pressure switch adjustment 6.10.1 Maximum gas pressure switch Adjust the maximum gas pressure switch (Fig. 35) after making all other burner adjustments with the maximum gas pressure switch set to the end of the scale. To calibrate the maximum gas pressure switch, open the tap and then connect a pressure gauge to its pressure test point.
  • Page 42: Operation

    Start-up, calibration and operation of the burner 6.10.4 Minimum oil pressure switch The minimum oil pressure switch (Fig. 38) is calibrated in the fac- tory at 18 bar. If during the start-up phase the oil pressure drop or does not reach 18 bar, the burner goes to the ignition phase and the dis- charge of the transformer remains for 30s without opening the oil valve, after which there is a lockout and the display shows “Loc c...
  • Page 43: Final Checks

    Start-up, calibration and operation of the burner 6.15 Final checks With the burner running   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 mini- ...
  • Page 44: Description Of O2 Trim Control (Optional)

    Start-up, calibration and operation of the burner 6.17 Description of O trim control (optional) A special feature of the LMV52… is control of the residual O content to increase the boiler’s efficiency. The LMV52… uses a QGO20…, an external PLL52…, and the standard components of the LMV51…...
  • Page 45: 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 oper- safety, yield and duration of the burner. ations: It allows you to reduce consumption and polluting emissions and to keep the product in a reliable state over time.
  • Page 46 Maintenance Voltage on the sensor flame LIGHT OIL OPERATION Minimum value for correct operation: 3.5V DC (value on AZL dis- play at about 50%). Pump The delivery pressure must comply with the table on page 32. If the value is lower, it could be due to: The depression must be less than 0.45 bar.
  • Page 47: Opening The Burner

    Maintenance 7.2.5 Checking the air and gas pressure on the GAS OPERATION combustion head Gas leaks To carry out this operation it is necessary to use a pressure gauge Make sure that there are no gas leaks on the pipe between the to measure the air and gas pressure at the combustion head, as gas meter and the burner.
  • Page 48: 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 of the operator panel visualises alternately the lock- burner more than twice in a row.
  • Page 49: A Appendix - Accessories

    Appendix - Accessories Appendix - Accessories Kit for modulating operation Burner Probe Adjustment field Code All models PT 100 temperature - 100...+ 500°C 3010110 All models 4 - 20 mA pressure 0...2.5 bar 3010213 All models 4 - 20 mA pressure 0...16 bar 3010214 Soundproofing box kit...
  • Page 50: Appendix - Electrical Panel Layout

    Index of layouts Indication of references Single line output diagram (RLS 310/E O2 MX 400 V - Direct Start Up) Single line output diagram (RLS 410/E O2 MX 400 V - Direct Start Up) Single line output diagram (RLS 510/E O2 MX 400 V - Star/Triangle Start Up)
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  • Page 71 Appendix - Electrical panel layout Wiring layout key Burner components Safety pressure switch/thermostat Boiler components Light oil operation valve Electronic cam Light oil return valve Module O2 - type PLL Light oil safety valve Display and operating unit Light oil safety valve on return Output power regulator RWF...
  • Page 72 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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