Riello RS 25/M BLU Installation, Use And Maintenance Instructions
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Riello RS 25/M BLU Installation, Use And Maintenance Instructions

Forced draught gas burner
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Installation, use and maintenance instructions
Forced draught gas burners
GB
Progressive two-stage or modulating operation
CODE
20169244
20169245
20169247
20168390
MODEL
RS 25/M BLU
RS 25/M BLU
RS 35/M BLU
RS 35/M BLU
TYPE
876 T
876 T
877 T
877 T
20168415 (3) - 12/2021

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Summary of Contents for Riello RS 25/M BLU

  • Page 1 Installation, use and maintenance instructions Forced draught gas burners Progressive two-stage or modulating operation CODE MODEL TYPE 20169244 RS 25/M BLU 876 T 20169245 RS 25/M BLU 876 T 20169247 RS 35/M BLU 877 T 20168390 RS 35/M BLU 877 T...
  • 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 2.1.1 Introduction.................................. 5 2.1.2 General dangers................................5 2.1.3 Other symbols ................................5 2.1.4 Delivery of the system and the instruction manual...................... 6 Guarantee and responsibility............................6 Safety and prevention................................
  • Page 4 Contents 6.6.1 Air pressure switch..............................29 6.6.2 Minimum gas pressure switch............................29 6.6.3 Flame presence check ...............................29 Burner operation ................................30 6.7.1 Burner start-up ................................30 6.7.2 Steady state operation ...............................30 6.7.3 Ignition failure................................30 Final checks (with burner operating) ..........................31 Maintenance ....................................32 Notes on safety for the maintenance .........................32 Maintenance programme ............................32 7.2.1 Maintenance frequency..............................32...

  • Page 5: Declarations

    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 Declaration of Conformity A.R. 8/1/2004 & 17/7/2009 – Belgium RIELLO S.p.A.
  • Page 6 Declarations 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 Type Model Output 876 T RS 25/M BLU 45 - 370 kW Forced draught gas burners...

  • 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: 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 9: Safety And Prevention

    Safety and prevention Safety and prevention Introduction The burners have been designed and built in compliance with frequency of the electrical power supply, the minimum and current regulations and directives, applying the known technical maximum deliveries for which the burner has been regulated, the safety rules and envisaging all the potential danger situations.

  • Page 10: Technical Description Of The Burner

    1/230/50/60 230/50/60 BASIC DESIGNATION EXTENDED DESIGNATION Models available Designation Power supply voltage Start-up Code RS 25/M BLU 1N ~ 230V - 50/60Hz Direct 20169244 RS 25/M BLU 1N ~ 230V - 50/60Hz Direct 20169245 RS 35/M BLU 1N ~ 230V - 50/60Hz...

  • Page 11: Burner Categories

    AT, CH, CZ, DK, EE, FI, GR, HU, IS, IT, LT, NO, RO, SE, SI, SK, TR II2H3B/P ES, GB, IE, PT II2H3P II2EK3B/P Tab. B Technical data Model RS 25/M BLU RS 35/M BLU Output Max. 125 ÷ 370 202 ÷ 480 Mcal/h 108 ÷ 320 174 ÷...

  • Page 12: Maximum Dimensions

    Bear in mind that inspection of the combustion head requires the burner to be opened and the rear part drawn back on the slide bars. The dimensions of the open burner are indicated by dimension O. D3831 Fig. 1 RS 25/M BLU 230-365 1”1/2 RS 35/M BLU 230-365 1”1/2 Tab.

  • Page 13: Firing Rates

    20 °C, an of the diagram: atmospheric pressure of 1013 mbar (approx. 0 m a.s.l.), and with the combustion head adjusted as RS 25/M BLU = 42 kW ATTENTION shown on page 20. RS 35/M BLU = 70 kW...

  • Page 14: 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 15: Burner Description

    Technical description of the burner 4.10 Burner description 20169174 20169175 20052390 20169176 Fig. 4 Combustion head 14 Gas butterfly valve Ignition electrode 15 Boiler fixing flange Screw for combustion head adjustment 16 Flame stability disc Air pressure switch (differential type) 17 Flame inspection window Flame sensor probe 18 Extensions for slide bars (only for TL versions)

  • Page 16: Electrical Panel Description

    Technical description of the burner 4.11 Electrical panel description 4 2 1 20194863 Fig. 5 Power switch for: automatic - manual - off operation A button for: output increase - decrease Ionisation probe connector Areas for passage of electric cables Light reset button Control box base Filter to protect against radio disturbance...

  • Page 17: 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 18: Servomotor (Sqn90

    Technical description of the burner 4.13 Servomotor (SQN90...) Important notes To avoid accidents, material or environmental damage, observe the following instructions! Avoid opening, modifying forcing ATTENTION servomotor.  All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ...

  • Page 19: 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 20: 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 21: Access To Head Internal Part

    Installation Access to head internal part In order to reach inside the combustion head (Fig. 12) proceed as The burner-boiler seal must be hermetic; after follows: burner start-up check there is no leakage of flue  remove the screw 1) and the internal part 2). gases into the external environment.

  • Page 22: Combustion Head Adjustment

    Installation Combustion head adjustment At this point of the installation, the combustion head is fixed to the NOTE: boiler as shown in Fig. 16. The adjustments indicated can be modified during the initial start-up. It is therefore especially easy to adjust, and this adjustment depends only on the maximum output of the burner.

  • Page 23: Gas Supply

    Installation Gas supply Explosion danger due to fuel leaks in the 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 24: Gas Train

    Installation 5.9.2 Gas train Type-approved in accordance with EN 676 and supplied separately from the burner. 5.9.3 Gas train installation Disconnect the power supply using the system main switch. DANGER D3839 Check that there are no gas leaks. Pay attention when handling the train: danger of crushing of limbs.
  • Page 25 Installation Column 1 Combustion head pressure drop. Gas pressure measured at test point 1)(Fig. 23), with: • combustion chamber at 0 mbar • burner working at maximum output Column 2 Pressure drop at gas butterfly valve 2)(Fig. 23) with maximum opening: 90°.

  • Page 26: Electrical Connections

    Installation 5.10 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: Supply Cables And External Connections Passage

    Installation 5.10.1 Supply cables and external connections passage All cables to connect to the burner are connected to the appropriate sockets on the side of the burner (Fig. 24), (use the supplied plugs for the connections). Cable grommets can be used in different manners; for example: 20169182 RS 25-35/M BLU single phase 7-pole socket for single phase power supply, TL...

  • 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 Before starting up the burner, refer to section by qualified personnel, as indicated in this manual "Safety test - with no gas supply”...

  • Page 29: Burner Start-Up

    Start-up, calibration and operation of the burner Burner start-up Feed electricity to the burner via the disconnecting switch on the boiler panel. Close the thermostats/pressure switches and turn the switch of Fig. 28 to position “1”. Check that the lamps or testers connected to the solenoid valves, or the pilot lights on the solenoid valves, indicate that no voltage is present.

  • Page 30: Maximum Output

    Start-up, calibration and operation of the burner Adjustment of air delivery Air adjustment Progressively adjust the beginning profile of cam 4)(Fig. 29) by Progressively adjust the end profile of cam 4)(Fig. 29) by turning turning the screws of the cam that appear inside the opening the screws of the cam that appear inside the opening 6)(Fig.

  • Page 31: Final Adjustment Of The Pressure Switches

    Start-up, calibration and operation of the burner Final adjustment of the pressure switches 6.6.1 Air pressure switch Adjust the air pressure switch (Fig. 32) after performing all other burner adjustments with the air pressure switch set to the start of the scale.

  • Page 32: Burner Operation

    Start-up, calibration and operation of the burner Burner operation 6.7.1 Burner start-up STANDARD IGNITION (no. = seconds from instant 0) Control remote control TL closes. Fan motor start-up. Servomotor start-up: turn to the right by 90°, i.e. until the contact intervenes on cam I (Fig. 27). The air damper is positioned to MAX output.

  • Page 33: Final Checks (With Burner Operating)

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

  • Page 34: 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 35: Safety Components

    Maintenance Boiler 7.2.4 Safety components Clean the boiler as indicated in its accompanying instructions in The safety components must be replaced at the end of their life order to maintain all the original combustion characteristics cycle indicated in Tab. K. intact, especially: the flue gas temperature and combustion The specified life cycles do not refer to the warranty terms chamber pressure.

  • Page 36: Opening The Burner

    Maintenance Opening the burner  Remove the screws 2)(Fig. 11) and tighten the two extensions 18)(Fig. 4) supplied with the burner. Disconnect the electrical supply from the burner  Re-tighten the two screws 2)(Fig. 11) on the terminal of the by means of the system main switch.

  • Page 37: 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 38: 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 39: 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 40 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 41 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 42 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, No flame at the end of the 2 safety time check the UV scanner, check the wiring, safety time (MTFI) etc.
  • Page 43 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution UV: false flame during operation False flame detected before ignition Check the scanner FR: false flame during operation False flame detected before ignition Check the wiring Check the scanner Make sure that earthing is appropriate T8 inlet fault The system detected the presence of...

  • Page 44: A Appendix - Accessories

    0 ÷ 16 bar 4 - 20 mA 3010214 Kit for LPG operation Burner Output kW Blast tube length (mm) Code RS 25/M BLU 120/200 - 470 230 - 365 3010423 RS 35/M BLU 120/200 - 470 230 - 365 3010424...

  • Page 45: B Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references RS 25/M BLU Functional layout RFGO-A22 RS 35/M BLU RS 25/M BLU Functional layout RFGO-A22 RS 35/M BLU RS 25/M BLU Electrical wiring that is the responsibility of the installer...
  • Page 46 Appendix - Electrical panel layout 20168415...
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  • Page 53 Appendix - Electrical panel layout 20168415...
  • Page 54 Appendix - Electrical panel layout Wiring layout key Electrical control box Shelf earth Filter to protect against radio disturbance Fan unit earth Burner components Servomotor unit earth Boiler components Gas adjustment valve + gas safety valve RWF Output power regulator YVPS Gas valve leak detection device Input in current DC 4...20 mA...
  • Page 56 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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