Riello RS 68/M BLU Installation, Use And Maintenance Instructions
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Riello RS 68/M BLU Installation, Use And Maintenance Instructions

Forced draught gas burners progressive two-stage or modulating operation
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Installation, use and maintenance instructions
Forced draught gas burners
GB
Progressive two-stage or modulating operation
CODE
20169249
20169248
20169243
20168391
MODEL
RS 68/M BLU
RS 68/M BLU
RS 120/M BLU
RS 120/M BLU
TYPE
846 T
846 T
847 T
847 T
20168422 (3) - 10/2020

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Summary of Contents for Riello RS 68/M BLU

  • Page 1 Installation, use and maintenance instructions Forced draught gas burners Progressive two-stage or modulating operation CODE MODEL TYPE 20169249 RS 68/M BLU 846 T 20169248 RS 68/M BLU 846 T 20169243 RS 120/M BLU 847 T 20168391 RS 120/M BLU 847 T...
  • 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 6.5.4 Minimum output .................................27 6.5.5 Intermediate outputs ..............................28 Final adjustment of the pressure switches .........................28 6.6.1 Air pressure switch..............................28 6.6.2 Maximum gas pressure switch...........................29 6.6.3 Minimum gas pressure switch............................29 6.6.4 Flame presence check ...............................29 Burner operation ................................30 6.7.1 Burner start-up ................................30 6.7.2 Steady state operation ...............................30 6.7.3...

  • Page 5: Declarations

    The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015. Legnago, 21.04.2018 General Manager Research and Development Director RIELLO S.p.A. - Burners Department RIELLO S.p.A. - Burners Department Eng. U. Ferretti Eng. F. Comencini...

  • Page 6: 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 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 safety rules 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 Series: Fuel: Natural gas Light oil Light oil / Methane Heavy oil Size Adjustment: Electronic cam Electronic cam and variable speed (with Inverter) Mechanical cam Proportional air/gas valve Emission: C01 or ...

  • Page 10: Models Available

    Technical description of the burner Models available Designation Power supply voltage Start-up Code RS 68/M BLU 3 ~ 230/400V - 50Hz Direct 20169249 RS 68/M BLU 3 ~ 230/400V - 50Hz Direct 20169248 RS 120/M BLU 3 ~ 230/400V - 50Hz...

  • Page 11: Maximum Dimensions

    The minimum output must not be lower than the minimum limit of the diagram. The firing rate value (Fig. 2) has been obtained RS 68/M BLU = 150 kW considering an ambient temperature of 20 °C, an RS 120/M BLU = 300 kW atmospheric pressure of 1013 mbar (approx.

  • Page 12: Test Boiler

    Technical description of the burner Test boiler The firing rates were obtained in special test boilers, according to Although combination is guaranteed when boiler has a CE type- EN 676 regulations. approval, preliminary tests are recommended for boilers or furnaces having a combustion chamber size much different than In Fig.

  • Page 13: Burner Description

    Technical description of the burner 4.10 Burner description 20169170 20169170 12 13 Fig. 4 Combustion head 14 Air inlet to fan Ignition electrode 15 Slide bars for opening the burner and inspecting the Screw for combustion head adjustment combustion head Maximum gas pressure switch 16 Gas pressure test point and head fixing screw Pipe coupling...

  • Page 14: Electrical Panel Description

    Technical description of the burner 4.11 Electrical panel description 20175249 Fig. 5 Plug-socket on ionisation probe cable Motor contactor and thermal relay with reset button Power switch for: automatic-manual-off operation A button for: output increase - decrease Terminal board for electric connection Cable grommets for electrical wiring (to be carried out by the installer) Air pressure switch (differential type)

  • Page 15: 4.12 Control Box Rfgo-A22

    Technical description of the burner 4.12 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 16: Servomotor (Sqn31

    Technical description of the burner 4.13 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 17: 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 18: Operating Position

    Installation Operating position  The burner is designed to operate only in  Any other position could compromise the positions 1, 2, 3 and 4 (Fig. 9). correct operation of the appliance.  Installation 1 is preferable, as it is the only ...

  • Page 19: Positioning The Probe - Electrode

    Installation Positioning the probe - electrode Before securing the burner to the boiler, check (through the opening of the blast tube) that the probe and electrode are correctly positioned, as in Fig. 13. ATTENTION If the probe or electrode is not correctly positioned, you must: ...

  • Page 20: Securing The Burner To The Boiler

    Installation Securing the burner to the boiler Divide the combustion head from the rest of the burner, as shown in Fig. 14; you have to:  loosen the 4 screws 3) and remove the hood 1). Provide an adequate lifting system of the burner. ...

  • Page 21: Combustion Head Adjustment

    Installation Combustion head adjustment At this point of the installation, the combustion head is fixed to the In the diagram of (Fig. 16), find the notch at which both air and boiler as shown in Fig. 12. It is therefore especially easy to adjust, central gas/air should be adjusted.

  • Page 22: Gas Supply

    Installation 5.10 Gas supply Explosion danger due to fuel leaks in the MBC “threaded” 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 23: 5.10.2 Gas Train

    Installation 5.10.2 Gas train Type-approved in accordance with EN 676 and supplied separately from the burner. To select the correct gas train model, refer to the manual "Burner- gas train combination" supplied with the unit. 5.10.3 Gas train installation Disconnect the power supply using the system main switch.
  • Page 24 Installation To calculate the approximate output at which the burner operates: – subtract the combustion chamber pressure from the gas pressure measured at test point 1)(Fig. 23). – Find in Tab. K related to the burner concerned, the pressure value closest to the result of the subtraction. –...

  • Page 25: Electrical Connections

    Installation 5.11 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 26: Calibration Of The Thermal Relay

    Installation 5.12 Calibration of the thermal relay The thermal relay (Fig. 25) 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 27: 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 28: Servomotor Adjustment

    Start-up, calibration and operation of the burner Servomotor adjustment The servomotor provides simultaneous adjustment of the air damper, by means of the variable profile cam and the gas butterfly valve. The servomotor rotates by 130° in 42 s. Do not alter the factory setting for the 5 cams; just check that they are as specified below: ATTENTION 130°.

  • Page 29: Maximum Output

    Start-up, calibration and operation of the burner In order to measure the ignition output: Key (Fig. 30) disconnect the plug-socket 1)(Fig. 5 on page 12) on the Servomotor  Servomotor 1) - cam 4): fastened ionisation probe cable (the burner will ignite and then go Servomotor 1) - cam 4): unfastened into lockout after the safety time has elapsed);...

  • Page 30: Intermediate Outputs

    Start-up, calibration and operation of the burner 6.5.5 Intermediate outputs Switch off the burner using switch 1)(Fig. 29), OFF position, release the mechanical cam 4)(Fig. 30) to separate the gears of Adjustment of gas delivery the servomotor, pressing and moving downwards button 3)(Fig.

  • Page 31: Maximum Gas Pressure Switch

    Start-up, calibration and operation of the burner 6.6.2 Maximum gas pressure switch 6.6.3 Minimum gas pressure switch Adjust the maximum gas pressure switch (Fig. 33) after making Adjust the minimum gas pressure switch (Fig. 34) after all other burner adjustments with the maximum gas pressure performing all the other burner adjustments with the pressure switch set to the end of the scale.

  • Page 32: Burner Operation

    Start-up, calibration and operation of the burner Burner operation 6.7.1 Burner start-up • The burner locks out when the heat request is less than the heat supplied by the burner at MIN output, (section G-H). • Control remote control TL closes. The TL remote control opens, and the servomotor returns to Fan motor start-up.

  • Page 33: 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 34: Safety Components

    Maintenance Flame inspection window Combustion Clean the glass of the flame inspection window (Fig. 38). Carry out an analysis of the combustion flue gases. Significant differences with respect previous measurements indicate the points where most care should be exercised during maintenance. If the combustion values measured before starting maintenance do not comply with applicable Standards or do not indicate efficient combustion, consult the table below or contact our...

  • Page 35: Opening The Burner

    Maintenance Opening the burner  Loosen the 4 screws 1)(Fig. 39) and remove the cover 2)(Fig. 39). Disconnect the electrical supply from the burner  Disengage the articulated coupling 7) from the graduated by means of the system main switch. sector 6)(Fig.

  • Page 36: 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 37: 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 38: 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 39 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 40 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 41 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution UV: no flame at the end of the Inspect the system, check the gas pressure, check the flame sensor, check the wiring, No flame at the end of the 2 safety time safety time (MTFI) etc.
  • Page 42 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution UV: false flame during operation False flame detected before ignition Check the flame sensor FR: false flame during operation Check the wiring False flame detected before ignition Check the flame sensor Make sure that earthing is appropriate T8 inlet fault The system detected the presence of...

  • Page 43: A Appendix - Accessories

    3010416 Differential circuit breaker kit LPG Kit Burner Code Burner Code RS 68-120/M BLU 3010329 RS 68/M BLU 3010433 Tubes kit Gas trains in compliance with EN 676 Please refer to manual. Burner Code RS 68/M BLU 3010247 The installer is responsible for the addition of any...

  • Page 44: B Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references RS 68/M BLU Functional layout RFGO-A22 RS 120/M BLU Functional layout RFGO-A22 RS 68/M BLU Electrical wiring that is the responsibility of the installer...
  • Page 45 Appendix - Electrical panel layout 20168422...
  • Page 46 Appendix - Electrical panel layout 20168422...
  • Page 47 Appendix - Electrical panel layout 20168422...
  • Page 48 Appendix - Electrical panel layout 20168422...
  • Page 49 Appendix - Electrical panel layout 20168422...
  • Page 50 Appendix - Electrical panel layout 20168422...
  • Page 51 Appendix - Electrical panel layout Wiring layout key Electrical control box Filter to protect against radio disturbance RWF50 output power regulator Current input DC 4...20mA Current input DC 4...20mA for remote setpoint change Pressure probe Pressure probe Remote setpoint potentiometer Thermocouple probe Probe Pt100.
  • Page 52 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:

Rs 120/m blu20169249201692482016924320168391

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