Riello GAS 8 P/M Installation, Use And Maintenance Instructions
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Riello GAS 8 P/M Installation, Use And Maintenance Instructions

Forced draught gas burners
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Installation, use and maintenance instructions
Forced draught gas burners
GB
Two stage progressive or modulating operation
CODE
20147902
20147903
20147904
20147794
20147795
20147906
20147907
20147908
20148024
20148960
20147796
20147797
MODEL
GAS 8 P/M
GAS 8 P/M
GAS 9 P/M
GAS 9 P/M
GAS 9 P/M
GAS 9 P/M
GAS 9 P/M
GAS 9 P/M
GAS 10 P/M
GAS 10 P/M
GAS 10 P/M
GAS 10 P/M
TYPE
538 T1
538 T1
540 T1
540 T1
540 T1
540 T1
540 T1
540 T1
541 T1
541 T1
541 T1
541 T1
20148758 (3) - 10/2021

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Summary of Contents for Riello GAS 8 P/M

  • Page 1 Installation, use and maintenance instructions Forced draught gas burners Two stage progressive or modulating operation CODE MODEL TYPE 20147902 GAS 8 P/M 538 T1 20147903 GAS 8 P/M 538 T1 20147904 GAS 9 P/M 540 T1 20147794 GAS 9 P/M...
  • 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 Burner adjustment..............................27 6.5.1 Combustion head ...............................27 Servomotor adjustment ..............................29 6.6.1 Output upon ignition ..............................29 6.6.2 Preliminary calibrations, if necessary.........................30 6.6.3 Maximum output ................................31 6.6.4 Minimum output .................................31 6.6.5 Intermediate outputs ..............................32 Pressure switch adjustment ............................33 6.7.1 Air pressure switch..............................33 6.7.2 Maximum gas pressure switch...........................33 6.7.3...

  • Page 5: Declarations

    GAS 8 P/M CE-0085AP0942 GAS 9 P/M CE-0085AP0943 GAS 10 P/M 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 20148758...

  • 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 safety electrical power supply, the minimum and maximum deliveries for technical rules and envisaging all the potential danger situations.

  • Page 9: Technical Description Of The Burner

    110/50/60 110V / 50-60Hz 3/230-400/50 230/50 BASIC DESIGNATION EXTENDED DESIGNATION Models available Designation Blast tube length (mm) Voltage Start-up Code GAS 8 P/M 3/230-400/50 Direct 20147902 GAS 8 P/M 3/230-400/50 Direct 20147903 GAS 9 P/M 3/400/50 Direct 20147904 - 20147794...

  • Page 10: Technical Data

    Technical description of the burner Technical data MODEL GAS 8 P/M GAS 9 P/M GAS 10 P/M Type 538 T1 540 T1 541 T1 1163 - 2210 1744 - 3488 2441 - 4885 2nd stage Mcal/h 1000 - 1900 1500 - 3000...

  • Page 11: Maximum Dimensions

    Note that to inspect the combustion head the burner must be moved backward and turned upward. T-T(1) U-U(1) 20178663 Fig. 1 T-T (1) U-U (1) GAS 8 P/M DN 80 1090 391 - 501 1541 - 1644 GAS 9 P/M DN 80 1200...

  • Page 12: Firing Rates

    Technical description of the burner Firing rates The burner output is to be chosen from within the diagram area. GAS 8 P/M This area is known as FIRING RATE and provides the burner out- S9734 put according to the pressure in the combustion chamber.

  • Page 13: Test Boiler

    Technical description of the burner Test boiler The burner/boiler combination does not pose any problems if the Example: boiler is EC approved and its combustion chamber dimensions Output 1500 Mcal/h: diameter 80 cm - length 2.5 m. are similar to those indicated in the diagram (Fig. 5). If the burner must be combined with a boiler that has not been EC 4.8.1 Commercial boilers...

  • Page 14: Burner Description

    Technical description of the burner Burner description 20194412 15 14 Fig. 6 Flame inspection window Lifting rings Slide bars for opening the burner and inspecting the com- bustion head (see note) Combustion head (two lengths) Closed air damper in stand-by to reduce heat losses Air pressure switch Gas butterfly valve control rod Control box with lockout pilot light and reset button...

  • Page 15: Electrical Panel Description

    Technical description of the burner 4.10 Electrical panel description 20159977 Fig. 7 Motor contactor and thermal relay (GAS 8-9 direct start-up) Terminal board Cable grommets supplied as standard (for electrical wirings to be carried out by the installer) Plug-socket on ionisation probe cable Plug-socket on servomotor cable Control box base Ignition transformer...

  • Page 16: 4.11 Control Box Rfgo-A22

    Technical description of the burner 4.11 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 WARNING or modifying it, or forcing its operation. The Manufacturer cannot assume any responsibility for damage resulting from unauthorised work! ...

  • Page 17: 4.12 Servomotor Sqm40

    Technical description of the burner 4.12 Servomotor SQM40 ... Important notes To avoid accidents, material or environmental damage, observe the following instructions! Avoid opening, modifying forcing WARNING servomotor.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ...

  • Page 18: 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 19: Operating Position

    The range of lengths available, L (mm), is as Ø follows: GAS 8 P/M Blast tube L mm GAS 8 GAS 9 GAS 10...

  • Page 20: Securing The Burner To The Boiler

    Installation 5.5.3 Securing the burner to the boiler Do not rotate the probe but leave it as in Fig. 14; if it is too close to the ignition electrode, it could damage the control box amplifier. Provide an adequate lifting system. CAUTION ...

  • Page 21: Positioning The Probe - Electrode

    Installation Positioning the probe - electrode Before securing the burner to the boiler, check Do not rotate the probe but leave it as in Fig. 14; if (through the opening of the blast tube) that the it is too close to the ignition electrode, it could probe and electrode are correctly positioned, as in damage the control box amplifier.

  • Page 22: Combustion Head Adjustment

     Lock the screw 1) The notch must be chosen from the diagram (Fig. 15) according to the MAX output required for the burner operation. Example: GAS 8 P/M MAX thermal power 1,500 Mcal/h. D759 NOTCH: 4 Notches on the ring nut 2)(Fig. 16) When fitting the burner on the two slide bars, it is Fig.

  • Page 23: Gas Supply

    Installation Gas supply 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 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 24: Gas Train

    Installation 5.8.2 Gas train 5.8.4 Gas pressure Type-approved in accordance with EN 676 and supplied sepa- Tab. H indicates the pressure drops of the combustion head and rately from the burner. gas butterfly valve, on the basis of the burner operating output. 1 p (mbar) Model 5.8.3...
  • Page 25 Installation This value serves as a rough guide; the effective output must be measured at the gas meter. To calculate the required gas pressure at test point 12) (Fig. 6 on page 12), set the output required from the burner operation: find the nearest output value in Tab.

  • Page 26: Electrical Connections

    Installation 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 27: Calibration Of The Thermal Relay

    Installation 5.10 Calibration of the thermal relay The thermal relay (Fig. 22) 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 lay- out (electrical wiring by the installer).

  • Page 28: 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 by qualified personnel, as indicated in this manual Before starting up the burner, refer to section and in compliance with the standards and regula- “Safety test - with no gas supply”...

  • Page 29: Burner Adjustment

    (Fig. 25). For example: with GAS 8 P/M for an output variation between 750 (MIN) and 1,500 (MAX) Mcal/h, the cylinder 2) must move from the notch 1.5 (MIN) to the notch 7.2 (MAX) with a stroke of 5.7 notches.
  • Page 30 Start-up, calibration and operation of the burner S10019 Fig. 26 Proceed as follows (with burner off):  use the diagram to calculate the notches relating to the required MIN and MAX outputs (Fig. 25), as well as the stroke of the cylinder 2)(Fig. 26): ...

  • Page 31: Servomotor Adjustment

    Start-up, calibration and operation of the burner Servomotor adjustment The servomotor adjusts simultaneously, through driving gears, the output and pressure of the air and the delivery of the fuel in use. It performs a 135° rotation in 45s. After the adjustment made in the factory to its 6 cams to allow an initial ignition.

  • Page 32: Preliminary Calibrations, If Necessary

    Start-up, calibration and operation of the burner 6.6.2 Preliminary calibrations, if necessary 7)(Fig. 6 on page 12) Fig. 28 Fig. 29 Fig. 30 S9526 They concern the disc (Fig. 29) of the gas butterfly valve, the tie- When the MIN-MAX ratio is approximately 1:2, the articulated rod (Fig.

  • Page 33: Maximum Output

    Start-up, calibration and operation of the burner • If the 1-2 ratio falls within the highest output range (e.g. 40- MAX air adjustment 80% of the MAX burner output), it is necessary, apart from Adjust the end profile of cam 2)(Fig. 30 on page 30) by turning moving the articulated couplings from 90°...

  • Page 34: Intermediate Outputs

    Start-up, calibration and operation of the burner 6.6.5 Intermediate outputs (especially necessary for modulating operation) No adjustment of gas delivery is required. The adjustment is carried out by working on the profile cam ad- justment intermediate screws 1)(Fig. 30 on page 30), paying at- tention not to move those related to the minimum and maximum delivery.

  • Page 35: Pressure Switch Adjustment

    Start-up, calibration and operation of the burner Pressure switch adjustment 6.7.1 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. 33). With the burner operating at MIN output, increase adjustment pressure by slowly turning the relevant knob clockwise until the burner locks out.

  • Page 36: Flame Presence Check

    Start-up, calibration and operation of the burner 6.7.4 Flame presence check The burner is fitted with an ionisation system to check that a flame is present. The minimum current for control box operation is 6 µA. The burner provides a much higher current, so that no check is usually needed.

  • Page 37: Burner Operation

    Start-up, calibration and operation of the burner Burner operation 6.8.1 Burner start-up Burner flame goes out during operation If the flame should accidentally go out during operation, the burn- (gas trains in compliance with EN 676) er will lock out within 1s. •...

  • Page 38: 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 39: Combustion Control (Gas)

    Maintenance Combustion 7.2.5 Safety components Carry out an analysis of the combustion flue gases. The safety components should be replaced at the end of their life Significant differences with respect to the previous measure- cycle indicated in the following table. ments indicate the points where most care should be exercised during maintenance.

  • Page 40: Opening The Burner

    Maintenance Opening the burner Disconnect the electrical supply from the burner Wait for the components in contact with heat by means of the system main switch. sources to cool down completely. DANGER  Remove the screws 7)(Fig. 39) retaining the fan 3) to the coupling 4).

  • Page 41: 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 posi- Damper...

  • Page 42: 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 43: 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 indi- Thermal unit’s operation, maintenance and trou- cate the cause of the stop. bleshooting interventions must be carried out by The terminal T3 is not powered.
  • Page 44 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 45 Problems - Causes - Remedies signalled by LED indicators Faults LED 1 LED 2 LED 3 LED 4 LED 5 LED 6 LED 7 Off-specification mains voltage ● ● ● ● ● UV: Internal fault ● ● Supervisor processor fault ●...
  • Page 46 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 47 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution Internal processor fault Internal fault Replace the control device 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...

  • Page 48: A Appendix - Accessories

    Appendix - Accessories Spacer kit to shorten the combustion head L = Spacer thickness L1 = Resulting blast tube length Burner Code GAS 8 P/M L = 110 L1 = 281 3000722 GAS 9 P/M L = 130 L1 = 314...
  • Page 49 GAS 9 P/M 3010298 GAS 10 P/M 3010300 Soundproofing box kit Burner Code GAS 8 P/M 3010404 GAS 9-10 P/M 3010376 Gas trains in compliance with EN 676 Please refer to manual. The installer is responsible for the addition of any safety device not foreseen in this manual.
  • Page 50 Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references RFGO-A22 functional diagram (Direct/Star-Triangle start-up) RFGO-A22 functional diagram (Direct/Star-Triangle start-up) Electrical connections to be carried out by the installer (Direct/Star-Triangle start-up) RWF functional diagram (Direct/Star-Triangle start-up) RWF functional diagram (Direct/Star-Triangle start-up) Indication of references / 1 .

  • Page 51: Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout 20148758...
  • Page 52 Appendix - Electrical panel layout 20148758...
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  • Page 57 Appendix - Electrical panel layout 20148758...
  • Page 58 Appendix - Electrical panel layout 20148758...
  • Page 59 Appendix - Electrical panel layout 20148758...
  • Page 60 Appendix - Electrical panel layout 20148758...
  • Page 61 Appendix - Electrical panel layout 20148758...
  • Page 62 Appendix - Electrical panel layout 20148758...
  • Page 63 Appendix - Electrical panel layout 20148758...
  • Page 64 Appendix - Electrical panel layout WIRING DIAGRAM 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 modifi- cation Pressure probe Pressure probe Remote setpoint potentiometer Thermocouple probe Probe Pt100, 2 wires Probe Pt100, 3 wires...
  • Page 68 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:

Gas 9 p/mGas 10 p/m20147902201479032014790420147794 ... Show all

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