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Summary of Contents for Riello 866T80
- Page 1 Installation, use and maintenance instructions Forced draught gas burners Progressive two-stage or modulating operation CODE MODEL TYPE 20145591 RS 250/M MZ 866T 20145630 RS 250/M MZ 866T80 20154244 (5) - 12/2021...
- Page 2 Translation of the original instructions...
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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 start-up ................................26 Burner ignition ................................26 6.5.1 Burner adjustment..............................26 6.5.2 Ignition output ................................26 6.5.3 Maximum output ................................26 6.5.4 Minimum output .................................27 6.5.5 Intermediate outputs ..............................27 Pressure switch adjustment ............................28 6.6.1 Air pressure switch..............................28 6.6.2 Maximum gas pressure switch...........................28 6.6.3 Minimum gas pressure switch............................28 Burner operation ................................29 6.7.1...
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Page 5: Declarations
Legnago, 03.05.2021 Research & Development Director RIELLO S.p.A. - Burner Department Mr. F. Maltempi 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 Model Type... -
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: Two stage (light oil) / Proportional valve (gas) Electronic cam Electronic cam and variable speed (with Inverter) Proportional air/gas valve Mechanical cam Emission:... -
Page 10: Burner Categories
Technical description of the burner Burner categories Country of destination Gas category AT, BG, CH, CZ, DK, EE, FI, GR, HU, IS, IT, LT, NO, RO, SE, SK, II2H3B/P SI, TR ES, GB, IE, PT II2H3P LU, PL II2E3B/P I2E(R) I3P II2ELL3B/P CY, MT I3B/P... -
Page 11: Maximum Dimensions
Technical description of the burner Maximum dimensions The dimensions of the burner are given in Fig. 1. The maximum dimensions of the open burner are indicated by values I. Bear in mind that inspection of the combustion head requires the burner to be opened and the rear part turned on the hinge. -
Page 12: Firing Rates
Technical description of the burner Firing rates The MAXIMUM OUTPUT must be selected within area A.(Fig. 2). The firing rate value (Fig. 2) has been obtained The MINIMUM OUTPUT must not be lower than the minimum considering an ambient temperature of 20 °C, an limit of the diagram: 600 kW atmospheric pressure of 1013 mbar (approx. -
Page 13: Burner Description
Technical description of the burner 4.10 Burner description 20156575 Fig. 4 Combustion head 13 Flame sensor probe Ignition electrode 14 Air damper Screw for combustion head adjustment 15 Air inlet to fan Maximum gas pressure switch 16 Screws to secure fan to pipe coupling Pipe coupling 17 Gas input pipe Servomotor controlling the gas butterfly valve and the air... -
Page 14: Electrical Panel Description
Technical description of the burner 4.11 Electrical panel description 20158344 Fig. 5 Plug-socket on ionisation probe cable Motor contactor and thermal relay with reset button Switch for automatic-manual-off operation; a button for output increase-decrease Main terminal supply board Cable grommets for electrical wiring (to be carried out by the installer) Minimum air pressure switch (differential type) Ignition transformer... -
Page 15: 4.12 Control Box Rfgo-A22
Technical description of the burner 4.12 Control box RFGO-A22 Important notes S9739 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 positions 1, 2, 3 and 4 (Fig. 9). Installation 1 is preferable, as it is the only one that allows the maintenance operations ATTENTION as described in this manual. ... -
Page 19: Securing The Burner To The Boiler
Installation Securing the burner to the boiler The burner-boiler seal must be hermetic; after Provide an adequate lifting system of the burner. burner start-up check there is no leakage of flue gases into the external environment. ATTENTION 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. -
Page 20: Positioning The Probe - Electrode
Installation 5.10 Positioning the probe - electrode Check that the probe and the electrode are placed as in Fig. 16, according to the dimensions indicated. ATTENTION If the probe or electrode is not correctly positioned, you must: remove the screw 1)(Fig. 15) ... -
Page 21: Combustion Head Adjustment
Installation 5.11 Combustion head adjustment At this stage of installation the blast tube and the pipe coupling Gas adjustment Fig. 17 are secured to the boiler as shown in Fig. 17. When the burner is installed for maximum output 1300 Mcal/h Therefore the adjustment of the combustion head is particularly (about 1500 kW), fit discs 1) and 2)(Fig. -
Page 22: Closing The Burner
Installation 5.12 Closing the burner Once the combustion head adjustment is completed: reassemble the burner on slide bars 3)(Fig. 19), about 100 mm from the pipe coupling 4)(Fig. 19); insert the probe cable and the electrode cable, then slide the burner as far as the pipe coupling. -
Page 23: Gas Supply
Installation 5.13 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: 5.13.2 Gas Train
Installation 5.13.2 Gas train Type-approved in accordance with EN 676 and supplied separately from the burner. 5.13.3 Gas train installation Disconnect the power supply using the system main switch. DANGER D722 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. 25), with: • combustion chamber at 0 mbar • burner working at maximum output Column 2 Pressure drop at gas butterfly valve 2)(Fig. 25) with maximum opening: 90°.
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Page 26: Electrical Wiring
Installation 5.14 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 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 Before starting up the burner, refer to section by qualified personnel, as indicated in this manual “Safety test - with no gas supply”... -
Page 28: 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 in Fig. 29 to position “MAN”. As soon as burner starts, check the fan rotation direction through the flame inspection window. -
Page 29: Minimum Output
Start-up, calibration and operation of the burner Air adjustment the air damper (see “Air adjustment” page 27). The air is adjusted by varying the angle of cam I) (Fig. 28 on Bring the output to 800 kW using the screws 5) of the mechanical page 25) and by using the selector 2)(Fig. -
Page 30: Pressure Switch Adjustment
Start-up, calibration and operation of the burner Pressure switch adjustment 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. With the burner operating at MIN output, increase adjustment pressure by slowly turning the relevant knob clockwise until the burner locks out. -
Page 31: Burner Operation
Start-up, calibration and operation of the burner Burner operation 6.7.1 Burner start-up limited by the contact of cam II (E) page 25. The air damper closes completely to reduce heat losses to a minimum. • Control remote control TL closes. With each change of output, the servomotor automatically Fan motor start-up. -
Page 32: 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 33: Flame Presence Check
Maintenance Combustion head Open the burner and make sure that all components of the combustion head are in good condition, not deformed by the high temperatures, free of impurities from the surroundings and correctly positioned. If in doubt, disassemble the elbow 5)(Fig. -
Page 34: Safety Components
Maintenance 7.2.5 Safety components The safety components should be replaced at the end of their life cycle indicated in the following table. The specified life cycles do not refer to the warranty terms indicated in the delivery or payment conditions. ATTENTION Safety component Life cycle... -
Page 35: 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 36: 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 37: 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 The regulation prohibits the system from allowing indicate the cause of the stop. more than 5 remote reset attempts within a 15 The terminal T3 is not powered. - Page 38 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 39 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 40 Problems - Causes - Remedies signalled by LED indicators Fault explanation Faults Cause Solution Post-diagnostics fault Initial power diagnostics fault Make sure that the status of inlets and Check T12, T13 and T14 outlets is correct upon ignition Local reset The user started the manual reset or the Check T21 inlet or reset for normal reset switch is faulty...
- Page 41 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution Internal processor timeout Internal fault Replace the control device Internal processor timeout Internal fault Replace the control device Combustion air check timeout The system could not perform verification tests of the combustion air during the burner Check the wiring or the air pressure switch sequence...
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Page 42: A Appendix - Accessories
Appendix - Accessories Appendix - Accessories LPG kit Flame sensor kit Burner Code Burner Code RS 250/M MZ 3010411 RS 250/M MZ 20144943 Town gas kit Differential circuit breaker kit Burner Code Burner Code RS 250/M MZ 3010472 RS 250/M MZ 3010329 Continuous purging kit Gas flange kit DN80... - Page 43 Appendix - Accessories Output regulator kit for modulating operation With modulating operation, the burner continuously adjusts its The parts to be ordered are two: output to the heat request, thereby ensuring a great stability of – output regulator to be installed to the burner; the controlled parameter: temperature or pressure.
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Page 44: B Appendix - Electrical Panel Layout
Appendix - Electrical panel layout Appendix - Electrical panel layout Contents Indication of references Functional layout RFGO-A22 Functional layout RFGO-A22 Electrical wiring that is the responsibility of the installer Functional layout RWF50 Indication of references / 1 . A 1 Sheet no. - Page 45 Appendix - Electrical panel layout 20154244...
- Page 46 Appendix - Electrical panel layout 20154244...
- Page 47 Appendix - Electrical panel layout 20154244...
- Page 48 Appendix - Electrical panel layout 20154244...
- Page 49 Appendix - Electrical panel layout 20154244...
- Page 50 Appendix - Electrical panel layout Wiring layout key Electrical control box Filter against radio disturbance RWF50 output regulator Current input DC 4...20 mA Current input DC 4...20 mA for remote setpoint modification Pressure probe Pressure probe Remote setpoint potentiometer Thermocouple probe Probe Pt100, 2 wires Probe Pt100, 3 wires Probe Pt100, 3 wires...
- 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...
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