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Riello GAS Series Installation, Use And Maintenance Instructions

Riello GAS Series Installation, Use And Maintenance Instructions

Forced draught gas burners

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Installation, use and maintenance instructions
Forced draught gas burners
GB
One stage operation
CODE
3751960
3751961
MODEL
GAS 3
GAS 3
TYPE
519 T55
516 T55
2915858 (4) - 07/2022

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Summary of Contents for Riello GAS Series

  • Page 1 Installation, use and maintenance instructions Forced draught gas burners One stage operation CODE MODEL TYPE 3751960 GAS 3 519 T55 3751961 GAS 3 516 T55 2915858 (4) - 07/2022...
  • Page 2 Translation of the original instructions...
  • Page 3 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 6.6.3 Minimum gas pressure switch............................22 Burner operation ................................23 6.7.1 Burner start-up ................................23 Final checks (with burner operating) ..........................23 Burner start-up cycle diagnostics ..........................24 6.9.1 Resetting of control box and diagnostics use ......................24 6.9.2 Control box reset................................24 6.9.3 Visual diagnostics ..............................24 6.9.4 Software diagnostics ..............................24 Maintenance ....................................25...
  • Page 5 Declarations Declarations Dichiarazione di conformità secondo ISO / IEC 17050-1 Questi prodotti sono conformi alle seguenti Norme Tecniche: • EN 12100 • EN 676 Secondo quanto disposto dalle Direttive Europee: 2006/42/CE Direttiva Macchine 2014/35/EU Direttiva Bassa Tensione EMC 2014/30/EU Compatibilità Elettromagnetica La qualità...
  • Page 6 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 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 Background 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 Models available Designation Voltage Start-up Code GAS 3 1/240/50 Direct 3751960 GAS 3 1/240/50 Direct 3751961 Technical data MODEL GAS 3 Type 519 T55 130 - 350 Output Mcal/h 130 - 300 NATURAL GAS: G20 - G25 - G31 Fuel - Net Calorific Value...
  • Page 10 Technical description of the burner Maximum dimensions The maximum dimensions of the burner are given in Fig. 1. The maximum dimension of the burner when open, without cover, is given by measurement I. Note that to inspect the combustion head the burner must be moved backward and turned upward.
  • Page 11 Technical description of the burner Firing rates The burner output is selected from within the area of the dia- If the burner develops an output of 240 kW at a pressure in com- grams. bustion chamber of 5 mbar, the work point is found on the maxi- mum pressure curve.
  • Page 12 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. 4). If the burner must be combined with a boiler that has not been EC 4.7.1 Commercial boilers...
  • Page 13 Technical description of the burner Burner description S10234 Fig. 5 Air shutter control Air shutter lock-out Control box reset button Fair leads Wiring terminal block Over pressure switch (2) Air pressure switch (1) Gas pressure test-point 2915858...
  • Page 14 The control box RMG88... is a safety device! WARNING Avoid opening or modifying it, or forcing its opera- tion. Riello S.p.A. cannot assume any responsibil- ity for damage resulting from unauthorised interventions!  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel.
  • Page 15 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 16 Installation Operating position  The burner is set up only to operate in posi- tions 1, 2, 3 and 4 (Fig. 8).  Installation 1 is preferable, as it is the only one that allows the maintenance operations WARNING as described in this manual. ...
  • Page 17 Installation 5.5.3 Securing the burner to the boiler S10235 Provide an adequate lifting system.  Separate the combustion head from the burner body by loosening the screws 1) and 2) and withdrawing the group A) from the holding bars 3). ...
  • Page 18 Installation Combustion head adjustment Two separate adjustments have to be made: air and gas. S10236 These adjustments can be carried out when the burner is still open, during the installation (“Securing the burner to the boiler” on page 15). Air setting ...
  • Page 19 Installation Gas feeding 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 that the fuel interception tap 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 20 Installation 5.8.2 Gas train The values shown in Tab. F on page 18 refer to: Natural gas G 20 NCV 10 kWh/Sm (8.6 Mcal/Sm Approved according to standard EN 676 and provided separately Natural gas G 25 NCV 8.6 kWh/Sm (7.4 Mcal/Sm from the burner.
  • Page 21 Installation 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 22 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 23 Start-up, calibration and operation of the burner Burner adjustment 6.5.2 Maximum burner output The optimum adjustment of the burner requires an analysis of flue gases at the boiler outlet. MAX gas adjustment Adjust in sequence: Ignition output Measure the gas flow rate. Maximum burner output If you need to reduce it, close the 2nd stage gas valve a little.
  • Page 24 Start-up, calibration and operation of the burner Pressure switch adjustment 6.6.1 Air pressure switch “1” 6.6.2 Over pressure switch “2” The air pressure switch is set after adjustment have been made. The over pressure switch must be set after all other adjustments Begin with the switch at the lowest setting.
  • Page 25 Start-up, calibration and operation of the burner Burner operation 6.7.1 Burner start-up NORMAL LOCK-OUT BECAUSE NO IGNITION D1799 Thermostat Motor Ignition transformer Ignition valve Ignition flame Safety + adjust. valve Operation flame Lock-out 40 s 10 s 40 s 3 s max. Fig.
  • Page 26 Start-up, calibration and operation of the burner Burner start-up cycle diagnostics 6.9.1 Resetting of control box and diagnostics use During start-up, indication is according to the colour code table (Tab. I). The control box features a diagnostics function through which any causes of malfunctioning are easily identified (indicator: RED Sequences Colour code...
  • Page 27 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 28 Maintenance Combustion 7.2.6 Safety components The optimum calibration of the burner requires an analysis of the The safety components should be replaced at the end of their life flue gases. cycle indicated in the following table. Significant differences with respect to the previous measure- The specified life cycles do not refer to the warranty terms indi- ments indicate the points where more care should be exercised cated in the delivery or payment conditions.
  • Page 29 Maintenance Opening the burner S10235 Disconnect the electrical supply from the burner by means of the main system switch. DANGER Close the fuel interception tap. DANGER Wait for the components in contact with heat sources to cool down completely.  Remove the screws 1) fixing the fan A) to the pipe coupling B);...
  • Page 30 Faults - Possible causes - Solutions Faults - Possible causes - Solutions In the event the burner stops, in order to prevent In the event there are further lockouts or faults any damage to the installation, do not unblock the with the burner, the maintenance interventions burner more than twice in a row.
  • Page 31 Faults - Possible causes - Solutions Signal Problem Possible cause Recommended remedy 10 blinks The burner does not Incorrect electrical wiring Check switch on, and the lock- out appears The burner goes into Defective control box Replace lockout Presence of electromagnetic disturbances in the Filter or eliminate thermostat lines Presence of electromagnetic disturbance...
  • Page 32 Appendix - Accessories Appendix - Accessories Extended head kit L = standard head L1 = extended head obtainable with the kit MODEL CODE GAS 3 185 mm 320 mm 3000605 Spacer kit for shortening the combustion head L = Spacer thickness L1 = Length of the resulting blast tube MODEL CODE...
  • Page 33 Appendix - Accessories Radio disturbance protection kit If the burner is installed in places particularly subject to radio dis- MODEL CODE turbance (emission of signals exceeding 10 V/m) owing to the GAS 3 3010386 presence of an INVERTER, or in applications where the length of the thermostat connections exceeds 20 metres, a protection kit is available as an interface between the control box and the burner.
  • Page 34 Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references Burner electrical wiring - to be carried out in the factory (DIAGRAM A) Electrical connections to the wiring terminal strip - to be carried out by the installer (DIAGRAM B) Indication of references / 1 .
  • Page 35 Appendix - Electrical panel layout DIAGRAM A D2565 DIAGRAM B D2566 2915858...
  • Page 36 Appendix - Electrical panel layout WIRING DIAGRAM KEY DIAGRAM (A) DIAGRAM (B) Air pressure switch Terminal strip Over pressure switch Valve position switch Capacitor Remote lock out signal RFI Suppressor Burner earth Relay Limit load control system Burner terminal strip Safety load control system Fan motor Ignition valve...
  • Page 40 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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