Riello RLS 68/M MX FS1 Installation, Use And Maintenance Instructions
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Riello RLS 68/M MX FS1 Installation, Use And Maintenance Instructions

Riello RLS 68/M MX FS1 Installation, Use And Maintenance Instructions

Dual fuel light oil/ gas burners
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Installation, use and maintenance instructions
Dual fuel light oil/ gas burners
GB
Progressive two-stage or modulating operation gas side/
two-stage light oil side
CODE
20147784
20147785
20147786
20147788
MODEL
RLS 68/M MX FS1
RLS 68/M MX FS1
RLS 120/M MX FS1
RLS 120/M MX FS1
TYPE
779T
779T
780T
780T
20148266 (4) - 01/2022

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Summary of Contents for Riello RLS 68/M MX FS1

  • Page 1 Installation, use and maintenance instructions Dual fuel light oil/ gas burners Progressive two-stage or modulating operation gas side/ two-stage light oil side CODE MODEL TYPE 20147784 RLS 68/M MX FS1 779T 20147785 RLS 68/M MX FS1 779T 20147786 RLS 120/M MX FS1 780T...
  • Page 2 Translation of the original instructions...

  • Page 3: Table Of Contents

    Contents Declarations....................................3 Information and general warnings............................5 Information about the instruction manual ........................5 Guarantee and responsibility............................6 Safety and prevention................................7 Introduction.................................. 7 Personnel training ............................... 7 Technical description of the burner ............................8 Burner designation ..............................8 Models available................................
  • Page 4 Contents Burner ignition (gas)..............................33 6.10 Burner adjustment (gas) ............................34 6.11 Change of fuel................................35 6.12 Pressure switch adjustment ............................36 6.13 Operation sequence of the burner (gas) ........................37 6.14 Final checks (with burner operating) ..........................38 Maintenance ....................................39 Notes on safety for the maintenance .........................39 Maintenance programme ............................39 Opening the burner ..............................42 Closing the burner..............................42...

  • 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 revision 26.01.2010”. Product...
  • Page 6 Declarations Declaration of Conformity A.R. 8/1/2004 & 17/7/2009 – Belgium Manufacturer: RIELLO S.p.A. 37045 Legnago (VR) Italy Tel. ++39.0442630111 www.riello.com Distributed by: RIELLO NV VAN MARCKE HQ LAR Blok Z 5, B-8511 Kortrijk (Aalbeke) Belgio Tel. +32 56 23 7511 e-mail: riello@vanmarcke.be...

  • Page 7: Information And General Warnings

    Information and general warnings Information and general warnings Information about the instruction manual 2.1.1 Introduction DANGER: EXPLOSION The instruction manual supplied with the burner: This symbol signals places where an explosive  is an integral and essential part of the product and must not atmosphere may be present.

  • Page 8: 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 9: 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 10: Technical Description Of The Burner

    Technical description of the burner Technical description of the burner Burner designation Series: Fuel: Natural gas Light oil Light oil / Methane Heavy oil Size Adjustment: Two stage (light oil) / Proportional valve (gas) Electronic cam Electronic cam and variable speed (with Inverter) Proportional air/gas valve Mechanical cam Class 1 EN267 - EN676...

  • Page 11: Burner Categories - Countries Of Destination

    Technical description of the burner 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 12: Packaging - Weight

    Technical description of the burner Packaging - Weight Package dimensions and weight are indicated in Tab. E. Model RLS 68/M MX 1400 RLS 120/M MX 1400 Tab. E Fig. 1 Maximum dimensions The dimensions of the burner are given in Fig. 2. The maximum dimensions of the open burner are indicated by the L and R positions.

  • Page 13: Firing Rate

    Technical description of the burner Firing rate During operation, burner output varies between: The firing rate value (Fig. 3) has been obtained  Maximum output considering an ambient temperature of 20 °C, an  The minimum output must not be lower than the minimum atmospheric pressure of 1013 mbar (approx.

  • Page 14: Commercial Boilers

    Technical description of the burner 4.10 Commercial boilers Burners are suitable for operating on both flame inversion boilers (*) as well as on boilers with a combustion chamber with run-off from the bottom (three flue passes) on which the best results for 250 mm MAX low NO emissions are obtained.

  • Page 15: Burner Description

    Technical description of the burner 4.12 Burner description 20159599 Fig. 6 Flame stability disc 18 Servomotor controlling the gas butterfly valve and the air Ignition electrodes damper, by means of a variable profile cam mechanism. Combustion head When the burner is not operating the air damper is fully Gas pressure test point and head fixing screw closed in order to reduce heat dispersion from the boiler due Screws to secure fan to pipe coupling...

  • Page 16: Electrical Panel Description

    Technical description of the burner 4.13 Electrical panel description 20159603 Fig. 7 Ignition transformer NOTE A switch for: Burner lockout may occur: automatic-manual-off operation control box lockout: if the control box 9)(Fig. 6) push-button A button for: lights up, it indicates that the burner is in lockout. output increase - decrease Press the push button to reset.

  • Page 17: 4.14 Control Box Rfgo-A22

    Technical description of the burner 4.14 Control box RFGO-A22 Important notes To avoid accidents, material or environmental damage, observe the following instructions! The control box is a safety device! Avoid opening ATTENTION or modifying it, or forcing its operation. The Manufacturer cannot assume any responsibility for damage resulting from unauthorised work! ...

  • Page 18: Servomotor (Sqn31

    Technical description of the burner 4.15 Servomotor (SQN31...) Important notes To avoid accidents, material or environmental damage, observe the following instructions! Avoid opening, modifying forcing ATTENTION actuators.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ...

  • Page 19: Calibration Of The Thermal Relay

    Technical description of the burner 4.16 Calibration of the thermal relay The thermal relay (Fig. 10) serves to avoid damage to the motor due to an excessive absorption increase or if a phase is missing. For calibration 2), refer to the table indicated in the electrical layout (electrical wiring by the installer).

  • Page 20: 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 21: Operating Position

    Installation Operating position  The burner is designed to operate only in positions 1, 2, 3 and 4 (Fig. 13).  Installation 1 is preferable, as it is the only one that allows the maintenance operations ATTENTION as described in this manual. ...

  • Page 22: Securing The Burner To The Boiler

    Installation Securing the burner to the boiler Provide an adequate lifting system.  Disconnect the electrode cables, then completely unthread Separate the combustion head from the rest of the burner, the burner from the slide bars. Fix the pipe coupling with the Fig.

  • Page 23: Choice Of Nozzles For The 1St And 2Nd Stage

    Installation Choice of nozzles for the 1st and 2nd stage Both nozzles must be chosen from among those listed in Tab. I. kg/h The first nozzle determines the delivery of the burner at the 1st 12 bar 10 bar 12 bar 14 bar stage.

  • Page 24: Nozzle Installation

     Do not use any sealing products such as: 267 standard. In order to guarantee that emissions do not vary, gaskets, tape or sealants. recommended and/or alternative nozzles specified by Riello in  Be careful to avoid damaging the nozzle the Instruction and warning booklet should be used.

  • Page 25: Combustion Head Adjustment

    Installation 5.10 Combustion head adjustment The adjustment of the combustion head depends only on the maximum output of the burner. Turn the screw 5)(Fig. 21) until the notch indicated in diagram (Fig. 22) corresponds with the front part of the flange 6)(Fig. 21). To facilitate the adjustment, loosen the screw 1)(Fig.

  • Page 26: Light Oil Supply

    Installation 5.11 Light oil supply 5.11.2 Loop circuit Explosion danger due to fuel leaks in the The loop circuit is composed of a duct starting from the tank and presence of a flammable source. going back to it, in which an auxiliary pump makes the Precautions: avoid knocking, attrition, sparks and pressurised fuel flow.
  • Page 27 Installation 5.11.3 Hydraulic connections The pumps are equipped with a by-pass that connects return line Connect, finally, the other end of the flexible hoses to the suction with suction line. and return lines using nipples supplied with the equipment. They are installed on the burner with the by-pass closed by screw 6)(Fig.
  • Page 28 Installation 5.11.6 Pump 5.11.8 Priming pump Before starting the burner, make sure that the tank Technical data return line is not clogged. PUMP AJ6 CC Obstructions in the line could cause the sealing ATTENTION Min. delivery rate at 12 bar pressure 220 kg/h organ located on the pump shaft to break.

  • Page 29: Gas Supply

    Installation 5.12 Gas supply Explosion danger due to fuel leaks in the MBC “threaded” presence of a flammable source. Precautions: avoid knocking, attrition, sparks and DANGER 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 30 Installation 5.12.2 Gas train 5.12.4 Gas pressure Type-approved in accordance with EN 676 and supplied Tab. L indicates the pressure drops of the combustion head and separately from the burner. gas butterfly valve depending on the burner operating output. (mbar) 5.12.3 Gas train installation G 20 G 25...
  • Page 31 Installation To calculate the required gas pressure at test point 1) (Fig. 33), set the maximum output required from the burner operation: Find in Tab. L the output value closest to the desired value. Read, on the right, the pressure at test point 1)(Fig. 33). Add this value to the estimated pressure in combustion chamber.

  • Page 32: Electrical Connections

    Installation 5.13 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 33: 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 34: Burner Start-Up (Light Oil)

    Start-up, calibration and operation of the burner Burner start-up (light oil) Feed electricity to the burner via the disconnecting switch on the boiler panel. Close the thermostats/pressure switches and turn the switch in Fig. 36 to position “MAN”. As soon as burner starts, check the fan rotation direction through the flame inspection window.

  • Page 35: Adjustments Prior To Ignition (Gas)

    Start-up, calibration and operation of the burner Adjustments prior to ignition (gas) Combustion head adjustment is already described on page 23. The manometer readings are used to calculate MAX burner output using the Tab. L. In addition, the following adjustments must also be made: –...

  • Page 36: Burner Adjustment (Gas)

    Start-up, calibration and operation of the burner 6.10 Burner adjustment (gas) The optimum adjustment of the burner requires an analysis of Adjustment of gas delivery flue gases at the boiler outlet. Measure the gas delivery on the meter. Adjust in sequence: A rough indication can be obtained from Tab.

  • Page 37: Change Of Fuel

    Start-up, calibration and operation of the burner 6.10.4 Intermediate outputs Adjustment of gas delivery No adjustment is required Air adjustment After adjusting the maximum and minimum output of the burner, carry out air adjustment on higher intermediate positions of the servomotor.

  • Page 38: Pressure Switch Adjustment

    Start-up, calibration and operation of the burner 6.12 Pressure switch adjustment 6.12.1 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. 40). With the burner operating at MIN output, increase adjustment pressure by slowly turning the relevant knob clockwise until the burner locks out.

  • Page 39: Operation Sequence Of The Burner (Gas)

    Start-up, calibration and operation of the burner 6.13 Operation sequence of the burner (gas) 6.13.1 Burner start-up 6.13.2 Steady state operation • Control remote control TL closes. Burner without output regulator RWF Fan motor start-up. At the end of the start-up cycle, the servomotor control switches •...

  • Page 40: Final Checks (With Burner Operating)

    Start-up, calibration and operation of the burner 6.14 Final checks (with burner operating)   Open the thermostat/pressure switch TL The burner must stop  Open the thermostat/pressure switch TS  Turn the knob of the gas maximum pressure switch to the ...

  • Page 41: 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 42 Maintenance 7.2.5 Safety components Check to make sure that no dust has accumulated inside the fan The safety components must be replaced at the end of their life or on its impellers, as this condition will cause a reduction in the cycle indicated in Tab.
  • Page 43 Maintenance LIGHT OIL OPERATION GAS OPERATION Filters (Fig. 46) 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 pipe between the the system. gas meter and the burner. Clean or replace if necessary.

  • Page 44: Opening The Burner

    Maintenance Opening the burner  Loosen the screws 1) and remove the hood 2)(Fig. 47).  Disconnect the light oil pipes 7)(Fig. 47). Disconnect the electrical supply from the burner  Disengage the articulated coupling 8) from the graduated by means of the system main switch. sector 9).

  • Page 45: Led Indicator And Special Function

    LED indicator and special function LED indicator and special function Description of LED lamps It turns on when the fan motor is powered (T6) and blinks when RUN/CHECK switch is set to “CHECK” during damper movement phases, PTFI AND MTFI. S9740 It blinks when the air damper is moving towards the maximum opening position until the Damper...

  • Page 46: Led Lamps: Burner Operating Status

    LED indicator and special function LED lamps: burner operating status OPERATING STATUSES INDICATED BY LEDS DURING NORMAL OPERATION AND CHECK MODE Operation Damper Damper Modulation Ignition Flame Status LED ● = ON open closed Icon S9740 S9741 S9742 S9743 S9744 S9745 S9746 Power OFF/ON...

  • Page 47: Problems - Causes - Remedies Signalled By Led Indicators

    Problems - Causes - Remedies signalled by LED indicators Problems - Causes - Remedies signalled by LED indicators When an emergency stop occurs, the control device LEDs Thermal unit’s operation, maintenance and indicate the cause of the stop. troubleshooting interventions must be carried out The terminal T3 is not powered.
  • Page 48 Problems - Causes - Remedies signalled by LED indicators Error / RFGO LED lock-out codes Faults LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 LED 7 Operation Open Closed Auto Ignition Flame Status LED ● = ON damper damper Icon...
  • Page 49 Problems - Causes - Remedies signalled by LED indicators Faults LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 LED 7 UV: Internal fault ● ● Supervisor processor fault ● ● ● Main processor fault ● ● ●...
  • Page 50 Problems - Causes - Remedies signalled by LED indicators Fault explanation Faults Cause Solution Post-diagnostics fault Initial power diagnostics fault Make sure that the status of inlets and Check T12, T13 and T14 outlets is correct upon ignition Local reset The user started the manual reset or the Check T21 inlet or reset for normal reset switch is faulty...
  • Page 51 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution Internal processor timeout Internal fault Replace the control device Internal processor timeout Internal fault Replace the control device Combustion air check timeout The system could not perform verification tests of the combustion air during the burner Check the wiring or the air pressure switch sequence...

  • Page 52: Appendix - Accessories

    Appendix - Accessories Appendix - Accessories Output regulator kit for modulating gas/two-stage oil operation With modulating operation, the burner continuously adjusts its The parts to be ordered are two: output to the heat request, thereby ensuring a great stability of •...

  • Page 53: Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references Functional layout Functional layout RFGO-A22 Functional layout RFGO-A22 Functional layout RFGO-A22 Functional layout Electrical wiring that is the responsibility of the installer Functional diagram RWF55.5... Indication of references / 1 .
  • Page 54 Appendix - Electrical panel layout 20148266...
  • Page 55 Appendix - Electrical panel layout 20148266...
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  • Page 57 Appendix - Electrical panel layout 20148266...
  • Page 58 Appendix - Electrical panel layout 20148266...
  • Page 59 Appendix - Electrical panel layout 20148266...
  • Page 60 Appendix - Electrical panel layout 20148266...
  • Page 61 Appendix - Electrical panel layout 20148266...
  • Page 62 Appendix - Electrical panel layout 20148266...
  • Page 63 Appendix - Electrical panel layout Wiring layout key Electrical control box Filter to protect against radio disturbance Pressure probe Temperature probe Thermal relay Three-phase power supply fuses RWF55.5 output power regulator Remote lockout signal Fan motor contactor Relay Relay Relay Relay Fan motor Pump motor...
  • Page 64 RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.it http:// www.riello.com Subject to modifications...

This manual is also suitable for:

Rls 120/m mx fs1779t780t

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