Riello RLS 68/E MX Installation, Use And Maintenance Instructions
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Riello RLS 68/E MX Installation, Use And Maintenance Instructions

Riello RLS 68/E MX 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
CODE
20073915
20073918
MODEL
RLS 68/E MX
RLS 120/E MX
TYPE
779T1
780T1
20121288 (5) - 07/2021

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Summary of Contents for Riello RLS 68/E MX

  • Page 1 Installation, use and maintenance instructions Dual fuel light oil / gas burners Progressive two-stage or modulating operation CODE MODEL TYPE 20073915 RLS 68/E MX 779T1 20073918 RLS 120/E MX 780T1 20121288 (5) - 07/2021...
  • 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 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 Start-up, calibration and operation of the burner ........................32 Notes on safety for the first start-up ...........................32 Adjustments prior to ignition (light oil) ........................32 6.2.1 Nozzle ..................................32 6.2.2 Combustion head ...............................32 6.2.3 Pump pressure................................32 6.2.4 Fan damper................................32 Operations before start-up (gas) ..........................32 Burner start-up ................................33 Change of fuel................................33 Burner adjustment..............................34...

  • Page 5: Declarations

    Such products are marked as follows: CE - 0085CS0238 The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015. Legnago, 03.05.2021 Research & Development Director RIELLO S.p.A. - Burner Department Mr. F. Maltempi 20121288...

  • 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: Delivery Of The System And The Instruction Manual

    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

    Voltage of auxiliaries: 230V / 50-60Hz 230/50/60 110V / 50-60Hz 110/50/60 3/400/50 230/50/60 BASIC DESIGNATION EXTENDED DESIGNATION Models available Designation Voltage Start-up Code RLS 68/E MX FS1 3/230-400/50 Diretto 20073915 RLS 120/E MX FS1 3/230-400/50 Diretto 20073918 Tab. A 20121288...

  • Page 10: Burner Categories - Countries Of Destination

    SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO 2ELL (43,46 ÷ 45,3 MJ/m (0°C)) 2E(R)B LU - PL Tab. B Technical data Model RLS 68/E MX FS1 RLS 120/E MX FS1 Power 195/350 - 871 290/595 - 1224 min - max Delivery kg/h 16/29 - 73...

  • Page 11: Electrical Data

    Technical description of the burner Electrical data Model RLS 68/E MX FS1 RLS 120/E MX FS1 Main electrical supply 3~ 230/400V +/-10% 50Hz Auxiliary circuit electrical supply 1N~ 230V 50Hz Fan motor IE3 2890 2860 380/415 380/415 1500 2200 Pump motor...

  • Page 12: Firing Rates

    Technical description of the burner Firing rates The maximum output should be chosen within area A)(Fig. 2) of The firing rate was obtained with an ambient tem- the diagram. perature of 20°C and a barometric pressure of The minimum output must not be lower than the minimum limit 1013 mbar (approx.

  • Page 13: Commercial Boilers

    Technical description of the burner Commercial boilers The burner is suitable for operating on both flame inversion boil- ers (*), as well as on boilers with a combustion chamber with run- off from the bottom (three flue passes) on which the best results 200 mm MAX for low NO emissions are obtained.

  • Page 14: Burner Description

    Technical description of the burner 4.11 Burner description 42-43 Seen from “A” 20128072 51 52 Fig. 5 Combustion head 34 Pump Ignition electrodes 35 Safety valve Screw for combustion head adjustment 36 Working valve Maximum gas pressure switch 37 Fan motor Pipe coupling 38 Contactor Fuel servomotor...

  • Page 15: Control Box For The Air/Fuel Ratio (Lmv 26

    The control box is a safety device! Avoid opening WARNING WARNING or modifying it, or forcing its operation. Riello S.p.A. cannot assume any responsibility for dam- age resulting from unauthorised interventions! Risk of explosion! An incorrect configuration can provoke fuel over-...
  • Page 16 Technical description of the burner Technical data Control box Mains voltage AC 230 V -15% / +10% Mains frequency 50 / 60 Hz ±6% Power absorption < 30 W Safety class I, with components in compliance with II and III, ac- cording to DIN EN 60730-1 Load on Fuse on the control box (can be inspected)

  • Page 17: Operation Sequence Of The Burner (Gas Operation)

    Technical description of the burner 4.12.1 Operation sequence of the burner (gas operation) Operation Checking of Start-up Switching off seal TSA1 Phase number Timer - Resolution - Ratio 0.6s Timer 1 (parameters) Timer 2 (parameters) Timer 3 = max. phase time RAST plug Input signals PIN number...

  • Page 18: Operation Sequence Of The Burner (Light Oil Operation)

    Technical description of the burner 4.12.2 Operation sequence of the burner (light oil operation) Operation Start-up Switching off Phase number Timer - Resolution - Ratio 30 s Timer 1 (parameters) Timer 2 (parameters) Timer 3 = max. phase time RAST plug Input signals PIN number X3-04 Pin 1/2...

  • Page 19: List Of The Phases (Gas Operation)

    Technical description of the burner 4.12.3 List of the phases (gas operation) 4.12.4 List of the phases (light oil operation) Phase Description Phase Description Ph00 Lockout phase Ph00 Lockout phase Ph02 Safety phase Ph02 Safety phase Ph10 Closing paused Ph10 Closing paused Ph12 Standby...

  • Page 20: Description Of The Symbols On The Display

    Technical description of the burner 4.13.1 Description of the symbols on the display Ignition transformer Valve powered powered Flame presence Fan motor powered Pre-heater active Lockout only for light oil burners Heat request Lock-out lamp Parameter mode active Info mode active Service mode active V h min s D9000...

  • Page 21: Servomotors

    Technical description of the burner 4.14 Servomotors Introduction The servomotors are commanded by the control box, which con- stantly checks their position by means of a return signal from the optic sensor inside the servomotor. For this reason it is absolutely forbidden to re- move the cover of the servomotors.

  • Page 22: 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 23: Operating Position

    D455 Fig. 14 plete with its fettling. The available lengths L are those indicated in the table below. RLS 68/E MX 275-325 Blast tube (mm) Short Long...

  • Page 24: Securing The Burner To The Boiler

    Installation Securing the burner to the boiler Before fixing the burner to the boiler, check from the opening of the blast tube if the electrodes are positioned correctly as in Fig. 25. If in the previous check the position was not correct, remove the screw 1)(Fig.

  • Page 25: Nozzle

    267 standard. In order to guarantee that emissions do not vary,  Remove the screw 1)(Fig. 18) and the internal part 2); recommended and/or alternative nozzles specified by Riello in  remove the nozzle 1)(Fig. 19) using a wheel spanner;...

  • Page 26: Removing The Nozzles

    Installation 5.7.3 Removing the nozzles Necessary for the operation within area B) of the “Firing rates”  unscrew screws 1) and nuts 2); on page 10.  extract the restrictor 3);  extract the internal part of the combustion head as described ...

  • Page 27: Combustion Head Adjustment

    Installation Combustion head adjustment The adjustment of the combustion head depends only on the 20121526 maximum output of the burner. Turn the screw 5)(Fig. 23) until the notch indicated by the dia- gram (Fig. 24) corresponds with the front part of the flange 6). To facilitate the adjustment, loosen the screw 1)(Fig.

  • Page 28: Light Oil Supply

    Installation 5.12 Light oil supply Explosion danger due to fuel leaks in the pres- 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 29: Hydraulic Connections

    Installation 5.12.3 Hydraulic connections The pumps are equipped with a by-pass that connects return line with suction line. They are installed on the burner with the by-pass closed by screw 6)(Fig. 29). It is necessary to connect both flexible hoses to the pump (Fig.

  • Page 30: Pump

    Installation 5.13.1 Pump Technical data After 5 or 6 starting operations allow 2 or 3 minutes for the trans- Pump former to cool. Min. delivery rate at 12 bar pressure 230 kg/h Do not illuminate the flame sensor or the burner will lock out; the Delivery pressure range 10 - 21 bar burner should lock out anyway about 10 seconds after it starts.

  • Page 31: Gas Feeding

    Installation 5.14 Gas feeding Explosion danger due to fuel leaks in the pres- 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 32: Gas Pressure

    Installation 5.14.2 Gas pressure 1 p (mbar) 2 p (mbar) Tab. O indicates the pressure drop of the combustion head and the gas butterfly valve depending on the operating output of the burner. The values shown the table refer to: –...

  • Page 33: Electrical Wiring

    Installation 5.15 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 34: 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 35: Burner Start-Up

    WARNING WARNING This modification must be made by qualified Riello personnel. There are two change of fuel options: with the “OIL-EXT-GAS” selector (Fig. 39); with a remote selector connected to the main terminal Fig.

  • Page 36: Burner Adjustment

    Start-up, calibration and operation of the burner Burner adjustment 6.6.1 Gas/air delivery adjustment 6.6.2 Light oil/air delivery adjustment  Slightly move towards the maximum flow rate (butterfly valve  Position the selector for selecting the light oil fuel. fully open); ...

  • Page 37: Maximum Gas Pressure Switch

    Start-up, calibration and operation of the burner 6.7.2 Maximum gas pressure switch Adjust the maximum gas pressure switch (Fig. 45) 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 38: Minimum Oil Pressure Switch

    Start-up, calibration and operation of the burner 6.7.5 Minimum oil pressure switch The minimum oil pressure switch (Fig. 48) is calibrated in the fac- tory at 18 bar. If the oil pressure falls below this value in the de- livery line, the pressure switch stops the burner. The burner restarts automatically if the pressure goes above 18 bar after the burner starts.

  • Page 39: Visualisation And Programming Mode

    Start-up, calibration and operation of the burner Visualisation and programming mode 6.8.1 Normal mode 6.8.1.4 Error state message, display of the errors and information The Normal mode is the standard operation mode visualised on the operator panel display. It is the main level of the menu. The display visualises alternately the error code (in the example ...

  • Page 40: Info Mode

    Start-up, calibration and operation of the burner 6.8.1.5 Reset procedure Releasing the “F” key, the standard visualisation appears, with the current load percentage flashing: this means that the burner The burner is in lockout when the red indicator light on the oper- is working in Manual mode (any outside adjustment is excluded ator panel is lit up, and the display visualises the lockout code (in and only the safety devices are active).

  • Page 41: Service Mode

    Start-up, calibration and operation of the burner The list of parameters (in the sequence in which they are dis- 6.8.3.1 Operating mode on Info Mode and Service Mode played) is shown in Tab. P. After access to these levels, the display visualises the number of the parameter (flashing) on the left, and the corresponding value Parameter on the right.
  • Page 42 Start-up, calibration and operation of the burner Once you have confirmed, the sign “–” will appear. 6.8.4.2 Assigning parameter levels Continue in the same way for the other characters. The parameters level is subdivided into groups as shown in Tab. After inserting the last character of the password, confirm by pressing the key “i/reset”: if the password inserted is correct you Parameter...

  • Page 43: Parameter Modification Procedure

    Start-up, calibration and operation of the burner Parameter modification procedure After accessing the level and group of parameters, the display visualises the number of the parameter (flashing) on the left, and The set value does not require confirmation. the corresponding value on the right. WARNING WARNING If the value is not visualised, press the key “i/reset for 1 - 3 sec-...
  • Page 44 Start-up, calibration and operation of the burner 6.9.0.2 CALC function The diagram (Fig. 49) shows how the fuel modulation curve is modified if the values of point “P5” are changed. By keeping the “+” key pressed for more than 3 s, the points from “P6”...

  • Page 45: Start-Up Procedure

    Start-up, calibration and operation of the burner 6.10 Start-up procedure Check that the Operator panel display shows the heat request Phase 36: and “OFF UP0” for fuel “0” or “OFF UPr1” for fuel 1: this means The burner goes to its switch-on position, point “P0”, defined in it is necessary to set the modulation curve of the burner.
  • Page 46 Start-up, calibration and operation of the burner Solve the problem, referring to the paragraph Ignition failure. During the adjustment of each point, work on the air and gas ser- vomotors, without modifying the position of the gas valve stabilis- To unlock, see Reset procedure. The display shows “OFF UP0” or “OFF UPr1”...

  • Page 47: Backup / Restore Procedure

    Start-up, calibration and operation of the burner 6.11 Backup / Restore procedure At the end of the Start-up procedure it is wise to carry out a The parameter bAC_UP appears on the display screen: backup, creating a copy of the data memorised on the LMV 26..., in the RDI 21 display panel.

  • Page 48: Restore

    Start-up, calibration and operation of the burner NOTE: The parameter bAC_UP appears on the display screen: If an error occurs during the backup process, the display screen shows a negative value. Refer to diagnostic code 137 to determine the cause of the error (see section List of parameters).

  • Page 49: List Of Parameters

    Start-up, calibration and operation of the burner After approx 8 seconds (it depends on the duration of the pro- NOTE: gramme), the 0 value appears on the display screen, this is to in- When the restore process is successfully completed, the 0 dicate that the restore process has been completed correctly.
  • Page 50 Start-up, calibration and operation of the burner Parameter Unit of Values interval No. of Modifica- Degree of Predefined measure- Access mode elements tion precision setting Description Min. Max. ment Standby time before a new attempt in event of com- munication fault Set values: Modification 7200s...
  • Page 51 Start-up, calibration and operation of the burner Parameter Unit of Values interval No. of Modifica- Degree of Predefined measure- Access mode elements tion precision setting Description Min. Max. ment Uphill train fan motor Modification 0.2s Service Mode Maximum time to reach low flame Modification 0.2s 10 min...
  • Page 52 Start-up, calibration and operation of the burner Parameter Unit of Values interval No. of Modifica- Degree of Predefined measure- Access mode elements tion precision setting Description Min. Max. ment Burner operation mode (fuel supply line, modulating/ stage, servomotors, etc.) -- = not defined (eliminate curves) 1 = Gmod 2 = Gp1 mod 3 = Gp2 mod...
  • Page 53 Start-up, calibration and operation of the burner Parameter Unit of Values interval No. of Modifica- Degree of Predefined measure- Access mode elements tion precision setting Description Min. Max. ment (Fuel 1) Oil: Post-purging time (no extraneous light Modification 0.2s 108 min 0.2s 0.2s Service Mode...

  • Page 54: Operation

    Start-up, calibration and operation of the burner Parameter Unit of Values interval No. of Modifica- Degree of Predefined measure- Access mode elements tion precision setting Description Min. Max. ment Result of the sampling of the contact (codified in bits) Bit 0.0 = 1: Minimum pressure switch Bit 0.1 = 2: Maximum pressure switch Bit 0.2 = 4: Pressure switch control valves Bit 0.3 = 8: Air pressure switch...

  • Page 55: Burner Flame Goes Out During Operation

    Start-up, calibration and operation of the burner 6.15 Burner flame goes out during operation If the flame accidentally goes out during operation, the control If the flame is still absent, the control box goes into lockout. box carries out a recycle (i.e. it repeats the start-up phase once, and makes a further ignition attempt).

  • Page 56: 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 Turn off the burner's electrical supply using the to keep the product in a reliable state over time.
  • Page 57 Maintenance Electrical current to flame sensor Combustion Clean the glass cover from any dust that may have accumulated. In case the combustion values found at the beginning of the inter- To remove the sensor, pull out outwards; it is only pressed in. vention do not respect the standards in force or, in any case, do Min value for a good work: 70 µA.

  • Page 58: Checking The Air And Gas Pressure On The Combustion Head

    Maintenance 7.2.4 Checking the air and gas pressure on the combustion head To carry out this operation it is necessary to use a pressure gauge to measure the air and gas pressure at the combustion head, as shown in Fig. 53. pressure control pressure...

  • Page 59: Opening The Burner

    Maintenance Opening the burner  Loosen the 4 screws 1)(Fig. 54) and remove the hood 2). Turn off the burner's electrical supply using the  Disconnect the light oil pipes using the fittings 3). main system switch.  Disconnect the tie-rod 4) from the sector 5). Make sure that both electrical supplies have been ...

  • Page 60: Faults - Probable Causes - Solutions

    Faults - Probable causes - Solutions Faults - Probable 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 61 Faults - Probable causes - Solutions Error Diagnostic code Meaning of the LMV 26... system Recommended measures code Leak test Check if the valve on the side of the burner has any leaks. V2 leaks Check if the pressure switch for the leak test (PGVP) is closed when gas pressure is not present.
  • Page 62 Faults - Probable causes - Solutions Error Diagnostic code Meaning of the LMV 26... system Recommended measures code Safety circuit open /Burner flange, air pressure, fuel pressure, POC - Alarm lockout at start Safety circuit open /Burner flange, extraneous light, air pressure, fuel pressure, POC - Alarm lockout at start Carry out a reset;...
  • Page 63 Faults - Probable causes - Solutions Error Diagnostic code Meaning of the LMV 26... system Recommended measures code Bit 3 The slope of the curve can correspond to a maximum position Curve too steep in terms of train ratio Valence 8 modification of 31°...
  • Page 64 Faults - Probable causes - Solutions Error Diagnostic code Meaning of the LMV 26... system Recommended measures code Carry out a reset; if the error arises repeatedly, replace the Voltage monitoring test internal error control box Insufficient mains voltage. Low level of power supply Conversion of the diagnostic code Voltage value (230 V AC: 1.683) Error code for the carrying out of a reset in the event of power...
  • Page 65 Faults - Probable causes - Solutions Error Diagnostic code Meaning of the LMV 26... system Recommended measures code 252 (-4) After restoration, the pages are still in INTERRUPTION Repeat the reset and backup 253 (-3) The restoration cannot currently be carried out Repeat the reset and backup 254 (-2) Interruption owing to transmission error...
  • Page 66 Faults - Probable causes - Solutions Error Diagnostic code Meaning of the LMV 26... system Recommended measures code Carry out a reset; if the error arises repeatedly, replace the Internal error control box Carry out a reset; if the error arises repeatedly, replace the Internal error control box Carry out a reset;...

  • Page 67: A Appendix - Accessories

    3010094 Soundproofing box kit Burner Code RLS 68-120/E MX 3010404 Tubes kit Burner Code RLS 68/E MX 20006401 RLS 120/E MX 20006402 Software interface kit (ACS410 + OCI410.30) - Service Level Burner Code RLS 68-120/E MX 3010436 Modbus interface kit...

  • Page 68: Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references Layout of unifilar output LMV26..operational layout LMV26..operational layout LMV26..operational layout LMV26..operational layout LMV26..operational layout Electrical connections set by installer Electrical connections set by installer RWF50..
  • Page 69 Appendix - Electrical panel layout 20121288...
  • Page 70 Appendix - Electrical panel layout 20121288...
  • Page 71 Appendix - Electrical panel layout 20121288...
  • Page 72 Appendix - Electrical panel layout 20121288...
  • Page 73 Appendix - Electrical panel layout 20121288...
  • Page 74 Appendix - Electrical panel layout 20121288...
  • Page 75 Appendix - Electrical panel layout 20121288...
  • Page 76 Appendix - Electrical panel layout 20121288...
  • Page 77 Appendix - Electrical panel layout 20121288...
  • Page 78 Appendix - Electrical panel layout 20121288...
  • Page 79 Appendix - Electrical panel layout Wiring layout key Burner components Ignition transformer Boiler components Limit thermostat/pressure switch Adjustment thermostat/pressure switch Control box for the air/fuel ratio Operator panel Safety thermostat/pressure switch Filter to protect against radio disturbance VFOil Light oil working valve Output regulator RWF50 VROil Light oil adjustment valve...
  • Page 80 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/e mx779t1780t1

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