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 Notes on safety for the first start-up ...........................24 Adjustments prior to ignition............................24 8.2.1 Burner ignition ................................24 8.2.2 Adjusting the burner ..............................24 Servomotor ................................26 Pressure switch adjustment ............................26 8.4.1 Oil pressure switch..............................26 Burner operation ................................27 8.5.1 Burner start-up ................................27 8.5.2 Steady state operation ...............................27 8.5.3 Ignition failure................................27...
Machine Directive 2014/35/EU Low Voltage Directive 2014/30/EU Electromagnetic Compatibility 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 20167399...
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;...
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;...
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.
Technical description of the burner Maximum dimensions The dimensions of the burner are given in Fig. 1. The maximum dimension of the open burner, without cover, is given by measurement H. 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.
Technical description of the burner Firing rate During operation, burner output varies between: D853 a MINIMUM OUTPUT: area A a MAXIMUM OUTPUT: area B Diagrams: Horizontal axis: burner output Vertical axis: pressure in combustion chamber The work point is found by drawing a vertical line from the required output and an horizontal line from the corresponding pressure in the combustion chamber.
Technical description of the burner 4.10 Burner description 20169199 20171021 Fig. 5 Ignition electrodes Two types of burner lockout may occur: Combustion head Screw for combustion head adjustment Control box lockout: Fan motor if the control box 20) push-button lights up, it indicates that the Screw for fixing fan to flange burner is in lockout.
Technical description of the burner 4.11 Electrical panel description 20156917 Fig. 6 Power switch for: automatic - manual - off operation Button for: power increase - power reduction Motor contactor and thermal relay with reset button (RL 38- 50/M) Motor capacitor (RL 28/M) Terminal board for electric connection Bracket for application of RWF kit Control box base...
CAUTION The packaging elements (wooden cage or cardboard box, nails, clips, plastic bags, etc.) RIELLO S.p.A. must not be abandoned as they are potential I−37045 Legnago (VR) sources of danger and pollution; they should be S8232 Fig.
Installation Control box RFGO-A23 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! ...
Installation Servomotor (SQN90...) Important notes 20162744 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. Falls and collisions can negatively affect the safety functions.
Installation Operating position The burner is set up to operate only in positions 1, 2, 3 and 4. Any other position could compromise the correct Installation 1 is preferable, as it is the only one that allows the operation of the appliance. maintenance operations as described in this manual.
Installation 5.10 Nozzle installation 5.10.1 Nozzle selection 20119564 The burner complies with the emission requirements of the EN 267 standard. In order to guarantee that emissions do not vary, recommended and/or alternative nozzles specified by the Manufacturer in the instruction and warning booklet should be used. It is advisable to replace nozzles once a year during periodical maintenance.
Installation 5.11 Combustion head adjustment The adjustment of the combustion head depends only on the maximum output at which the burner has to operate. Turn the screw 4)(Fig. 17) until the notch indicated by the diagram (Fig. 18) corresponds with the front part of the flange 5)(Fig.
Hydraulic system Hydraulic system Light oil supply Explosion danger due to fuel leaks in the 20170883 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.
Hydraulic system Hydraulic connections Make sure that the hoses to the pump supply 20170884 and return line are installed correctly. CAUTION The pumps are equipped with a by-pass that connects return line with suction line. They are installed on the burner with the by- pass closed by screw 6)(Fig.
Hydraulic system Pump 6.3.2 Priming pump D1239 Before starting the burner, make sure that the tank return line is not clogged. Obstructions in the line could cause the ATTENTION sealing organ located on the pump shaft to break. (The pump leaves the factory with the by-pass closed).
Electric system Electric system 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.
Electric system 7.1.1 Supply cables and external connections 20170885 passage All the cables to be connected to the terminal board 5)(Fig. 24) of the burner are passed through cable grommets supplied with the unit to be inserted in the holes of the plate, preferably on the left, after having unscrewed the screws 6), opened the plate at parts 7) and 8) and removed the thin diaphragm that closes the holes.
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 27
Start-up, calibration and operation of the burner 2 - MINIMUM OUTPUT D869 MIN output must be selected within the firing rate range indicated on page 10. Press button 2)(Fig. 27) “-” and keep it pressed until the servomotor reaches 15° (factory adjustment). Nozzle output adjustment The nozzle flow output is given in the diagram (Fig.
Start-up, calibration and operation of the burner Servomotor The servomotor simultaneously adjusts the air damper 11)(Fig. 29 on page 25) and the pressure variator 9) by means of a double variable profile cam, 4) and 7). The servomotor's rotation angle is 90° in 24 s. Do not alter the factory setting for the 4 cams;...
Start-up, calibration and operation of the burner Burner operation 8.5.1 Burner start-up 20171022 0 s: TL remote control closing, motor starting. The pump 3) sucks the fuel from the tank through the piping 1) and the filter 2) and pumps it under pressure to delivery.
Start-up, calibration and operation of the burner Final checks – Block the flame sensor and turn off the remote controls: the burner must start and then stop in lockout after approximately Make sure that the mechanical locking systems 5 s after ignition. on the adjustment devices are fully tightened.
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.
Maintenance Flame sensor Combustion Carry out an analysis of the combustion flue gases. Significant Clean the glass cover from any dust that may have accumulated. differences with respect to the previous measurements indicate To remove the sensor 1)(Fig. 37) pull it outwards with force; it is the points where more care should be exercised during inserted only by pressure.
Maintenance Opening the burner Disconnect the electrical supply from the burner by means of the system main switch. DANGER Close the fuel shut-off valve. D875 DANGER Wait for the components in contact with heat sources to cool down completely. Fig. 40 –...
LED indicator and special function 10.1 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 position-reached feedback sent by the servomotor is received, then it stays steadily on for the open...
10.4 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 Not ready/ Green Diagnostics...
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. by trained personnel.
Page 37
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 38
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 39
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 40
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 scanner FR: false flame during operation False flame detected before ignition Check the wiring Check the scanner Make sure that earthing is appropriate...
Appendix - Accessories Appendix - Accessories Extended head Kit (for short head versions only) L (mm) L (mm) Burner Code Standard head Head obtainable with the kit RL 28/M 3010120 RL 38/M 3010121 RL 50/M 3010122 Soundproofing box kit Burner Type dB(A) Code...
Page 52
Appendix - Electrical panel layout WIRING DIAGRAM KEY Control box Filter to protect against radio disturbance RWF Output power regulator Probe with output under current Device with output under current to modify remote setpoint Pressure probe Pressure probe Remote setpoint potentiometer Thermocouple probe Probe Pt100, 2 wires Probe Pt100, 3 wires...