Riello RLS 70 Installation, Use And Maintenance Instructions
Dual fuel light oil/ gas burners. two stage operation
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Table of Contents
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Summary of Contents for Riello RLS 70
- Page 1 Installation, use and maintenance instructions Dual fuel light oil/ gas burners Two stage operation CODE MODEL TYPE 3485001 RLS 70 687 T1 20052635 RLS 70 687 T1 3485201 RLS 100 688 T1 20052636 RLS 100 688 T1 3485401 RLS 130...
- 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 5.13.1 Supply cables and external connections passage .....................27 5.14 Calibration of the thermal relay ..........................28 Start-up, calibration and operation of the burner ........................29 Notes on safety for the first start-up ...........................29 Adjustments prior to ignition (light oil) ........................29 6.2.1 1st and 2nd stage nozzles ............................29 6.2.2 Combustion head ...............................29...
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Page 5: Declarations
The quality is guaranteed by a quality and management system certified in accordance with ISO 9001:2015. Legnago, 21.04.2018 General Manager Research and Development Director RIELLO S.p.A. - Burners Department RIELLO S.p.A. - Burners Department Eng. U. Ferretti Eng. F. Comencini... -
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 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
Voltage of auxiliaries: 230/50/60 230V / 50-60Hz 110/50/60 110V / 50-60Hz 3/230/50 230/50/60 BASIC DESIGNATION EXTENDED DESIGNATION Models available Designation Voltage Start-up Code RLS 70 3/230-400/50 Direct 3485001 RLS 70 3/230-400/50 Direct 20052635 RLS 100 3/230-400/50 Direct 3485201 RLS 100 3/230-400/50... -
Page 10: Burner Categories - Countries Of Destination
SE - FI - AT - GR - DK - ES - GB - IT - IE - PT - IS - CH - NO 2ELL (43.46 ÷ 45.3 MJ/m (0°C)) 2L - 2E - 2E(R)B LU - PL Technical data Model RLS 70 RLS 100 RLS 130 Type 684 T1 685 T1 686 T1 Power 232/465 ÷ 814 349/698 ÷ 1163 465/930 ÷... -
Page 11: Electrical Data
Technical description of the burner Electrical data Model RLS 70 RLS 100 RLS 130 Main electrical supply 3 ~ 230/400V +/-10% 50Hz Auxiliary circuit electrical supply 1N ~ 230V 50Hz Fan motor IE3 2860 2860 2860 230/400 230/400 230/400 1100... -
Page 12: Maximum Dimensions
I. Note that to inspect the combustion head the burner must be moved backward and turned upward. The maximum dimension D1176 Fig. 1 RLS 70 250-385 1161 2” RLS 100 250-385 1161 2”... -
Page 13: Firing Rates
Technical description of the burner Firing rates The burners RLS 70 - 100 - 130 can work in two ways: one-stage The firing rate value (Fig. 2) has been obtained or two-stage. considering an ambient temperature of 20 °C, an The MAXIMUM OUTPUT is chosen within area A (and B for RLS atmospheric pressure of 1013 mbar (approx. -
Page 14: Test Boiler
Technical description of the burner Test boiler The burner/boiler combination does not pose any problems if the In Fig. 3 you can see the diameter and length of the test boiler is EC approved and its combustion chamber dimensions combustion chamber. are similar to those indicated in the diagram (Fig. -
Page 15: Burner Description
Technical description of the burner 4.10 Burner description 20140177 Fig. 4 Combustion head 22 Air damper Ignition electrodes 23 Air inlet to fan Screw for combustion head adjustment 24 Pump Pipe coupling 25 Gas input pipe Relay 26 Boiler fixing flange Fan motor 27 Flame stability disc Motor contact maker and thermal relay with reset button... -
Page 16: Control Box (Lfl1.333
To avoid accidents, material or environmental damage, observe the following instructions! The control box LFL1.333... is a safety device! ATTENTION Avoid opening or modifying it, or forcing its operation. Riello S.p.A. cannot assume any responsibility damage resulting from unauthorised interventions! ... -
Page 17: Servomotor (Lks 210
Technical description of the burner 4.12 Servomotor (LKS 210 ...) Important notes S9697 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 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
Provide an adequate lifting system. The position of the threaded holes can be marked using the thermal insulation screen supplied with the burner. Separate the combustion head from the rest of the burner RLS 70 275 - 325 M 12 (Fig. 10):... -
Page 20: Access To Head Internal Part
Installation Access to head internal part In order to reach inside the combustion head (Fig. 11) proceed as D1122 follows: remove the screw 1) and the internal part 2). Be careful as some drops of fuel may leak out during this phase. -
Page 21: Nozzle Installation
The burner complies with the emission requirements of the EN D1122 267 standard. In order to guarantee that emissions do not vary, recommended and/or alternative nozzles specified by Riello in the Instruction and warning booklet should be used. It is advisable to replace the nozzle once a year during periodical maintenance. -
Page 22: Combustion Head Adjustment
Installation Combustion head adjustment 5.9.1 Adjustments prior to ignition (with light oil) The adjustment of the combustion head depends only on the maximum output of the burner in the 2nd stage. Turn the screw 5)(Fig. 17) until the notch indicated by the diagram (Fig. -
Page 23: Light Oil Supply
Installation 5.10 Light oil supply Explosion danger due to fuel leaks in the L [m] +/- H presence of a flammable source. Ø [mm] Precautions: avoid knocking, attrition, sparks and heat. Make sure the fuel shut-off valve is closed before performing any operation on the burner. -
Page 24: Hydraulic Connections
Installation 5.10.2 Hydraulic connections 5.10.3 Hydraulic circuit diagram Make sure that the hoses to the pump supply 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. -
Page 25: Pump
Installation 5.11 Pump 5.11.1 Technical data Pump SUNTEC AJ 6 CC Min. delivery rate at 12 bar pressure 220 kg/h Delivery pressure range 10 - 20 bar Max. suction depression 0.45 bar Viscosity range 2.8 - 75 cSt. Max. light oil temperature 60°C Max. -
Page 26: Gas Supply
Installation 5.12 Gas supply Explosion danger due to fuel leaks in the MBC “threaded” 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 27: Gas Train
Installation 5.12.2 Gas train 5.12.4 Gas pressure Type-approved in accordance with EN 676 and supplied Tab. K indicates the pressure drops of the combustion head and separately from the burner. gas butterfly valve, on the basis of the burner operating output. To select the correct gas train model, refer to the manual "Burner- 1 p (mbar) gas train combination"... - Page 28 Installation Example RLS 100 with natural gas G20: 2nd stage operation Gas pressure at test point 1)(Fig. 28) = 11.2 mbar S9690 Pressure in combustion chamber 2 mbar 11.2 - 2 9.2 mbar A pressure of 9.2 mbar, column 1, corresponds in Tab. K to an output of 955 kW.
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Page 29: Electrical Connections
Installation 5.13 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 30: Calibration Of The Thermal Relay
Even if the scale of the thermal relay does not include rated motor absorption at 400 V, protection is still ensured in any case. Fig. 30 The automatic reset can be dangerous. This operation is not foreseen in the burner operation. ATTENTION RLS 70 RLS 100 RLS 130 230V 400V 230V 400V... -
Page 31: 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 32: Adjustments Prior To Ignition (Gas)
Start-up, calibration and operation of the burner Adjustments prior to ignition (gas) Combustion head adjustment is already described on page 20. Before starting up the burner, it is good practice to In addition, the following adjustments must also be made: adjust the gas train so that ignition takes place in ... -
Page 33: Burner Adjustment (Gas)
6.7.4 Operation with LPG - Propane - Butane indicated in page 11. The RLS 70 - 100 - 130 burners can operate also with LPG - Turn switch 2)(Fig. 32) to the 1st stage position: the servomotor Propane-Butane. will close the air damper on the value previously set for the light oil and will control the opening of the 1st stage VR1 gas valve. -
Page 34: Servomotor Adjustment
Start-up, calibration and operation of the burner Servomotor adjustment The servomotor (Fig. 37) adjusts the air damper. Summarising, the lever must intervene according to the following sequence: Do not alter (for the moment) the factory setting for the 4 levers. A graduated label with 4 coloured sectors shows the intervention 1°... -
Page 35: Pressure Switch Adjustment
Start-up, calibration and operation of the burner Pressure switch adjustment 6.9.1 Air pressure switch - check CO Adjust the air pressure switch after performing all other burner adjustments with the air pressure switch set to the start of the scale (Fig. 38). With the burner operating in 1st stage, increase adjustment pressure by slowly turning the relevant knob clockwise until the burner locks out. -
Page 36: Operation Sequence Of The Burner
Start-up, calibration and operation of the burner 6.10 Operation sequence of the burner 6.10.1 Burner start-up Burner start-up 20141124 TL closes, fan motor starts, (in case of oil operation, pump motor starts) servomotor starts, maximum opening. 11 s air damper is at its maximum opening 42 s servomotor closing phase starts at the minimum output. -
Page 37: Final Checks (With Burner Operating)
Start-up, calibration and operation of the burner 6.11 Final checks (with burner operating) Open the thermostat/pressure switch TL The burner must stop Open the thermostat/pressure switch TS Turn the knob of the gas maximum pressure switch to the ... -
Page 38: Maintenance
Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, safety, yield and duration of the burner. Disconnect the electrical supply from the burner It allows you to reduce consumption and polluting emissions and by means of the main system switch. - Page 39 Maintenance Electrical current to UV sensor (Fig. 44) LIGHT OIL OPERATION Clean the glass cover from any dust that may have accumulated. To remove the sensor pull it outwards with force; it is inserted Pump only by pressure. The delivery pressure must comply with the table on page 23. Min.
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Page 40: Combustion Control (Gas)
Maintenance 7.2.5 Safety components GAS OPERATION The safety components should be replaced at the end of their life cycle indicated in the following table. Gas leaks Make sure that there are no gas leaks on the pipe between the The specified life cycles do not refer to the warranty terms gas meter and the burner. -
Page 41: Opening The Burner
Maintenance Opening the burner Disconnect the electrical supply from the burner by means of the main system switch. DANGER D1183 Close the fuel shut-off valve. DANGER Wait for the components in contact with heat sources to cool down completely. Loosen the screws 1) and remove the cover 2) ... -
Page 42: Faults - Possible Causes - Solutions
Faults - Possible causes - Solutions Faults - Possible causes - Solutions The LFL1.333... control box is equipped with a lockout indicator Lockout indicator (Fig. 46) that turns during the start-up programme, and is visible Start-up sequence from the small lockout window. b(b’) Idle stages... -
Page 43: Light Oil Operation
Faults - Possible causes - Solutions Light oil operation Symbol Problem Probable cause Suggested remedy Limiter or safety control device open Adjust or replace Control box lockout Release Fan motor lockout Release the thermal relay No electrical power supply Close all switches - check connections No light oil Check the light oil supply circuit The burner does not start... - Page 44 Faults - Possible causes - Solutions Symbol Problem Probable cause Suggested remedy Little air Adjust the fan head and damper Incorrect pump pressure Adjust Nozzle filter clogged Clean or replace Smoke in flame (dark Bacharach) Boiler room air vents insufficient Increase Dirty or worn nozzle Replace...
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Page 45: Gas Operation
Faults - Possible causes - Solutions Gas operation Symbol Problem Probable cause Suggested remedy No electrical power supply Close all switches and check connections A limit or safety thermostat/pressure switch Adjust or replace open Control box lockout Release the control box Replace it Control box fuse interrupted Incorrect electrical wiring... - Page 46 Faults - Possible causes - Solutions Symbol Problem Probable cause Suggested remedy The GAS solenoid valve lets too little gas Increase through The GAS solenoid valve does not open Replace the coil or the rectifier panel Gas pressure too low Increase pressure at governor Ignition electrode incorrectly adjusted Adjust it...
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Page 47: A Appendix - Accessories
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 RLS 70 3010345 RLS 100 3010346 RLS 130 3010347 Soundproofing box kit Burner Type... -
Page 48: B Appendix - Electrical Panel Layout
Appendix - Electrical panel layout Appendix - Electrical panel layout Index of layouts Indication of references Factory made electrical system (DIAGRAM A) Electrical system external connections without valve leak detection control (DIAGRAM B) Electrical system external connections without valve leak detection control (DIAGRAM C) Indication of references / 1 . - Page 49 Appendix - Electrical panel layout D3493 20139915...
- Page 50 Appendix - Electrical panel layout 20141802 20139915...
- Page 51 Appendix - Electrical panel layout 20141803 20139915...
- Page 52 - 1st stage adjustment valve - 2nd stage adjustment valve - Safety valve The RLS 70-100-130 models leave the fac- The leak detection control takes place immediate- tory pre-set for 400 V power supply. ly before each burner start-up.
- 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...