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Installation, use and maintenance instructions
Dual fuel light oil/ gas burners
GB
Progressive two stage or modulating operation
20124918 - 20124919 - 20124927
20124937 - 20124938 - 20124940
20124941 - 20124942 - 20124943
20124954 - 20124956 - 20124959
CODE
MODEL
RLS 280/EV
RLS 310/EV
RLS 410/EV
RLS 510/EV
20120900 (5) - 07/2021
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Table of Contents
Related Manuals for Riello RLS 280/EV
Summary of Contents for Riello RLS 280/EV
- Page 1 Dual fuel light oil/ gas burners Progressive two stage or modulating operation CODE MODEL 20124918 - 20124919 - 20124927 RLS 280/EV 20124937 - 20124938 - 20124940 RLS 310/EV 20124941 - 20124942 - 20124943 RLS 410/EV 20124954 - 20124956 - 20124959...
- Page 2 Original instructions...
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Page 3: Table Of Contents
Electrode and ignition pilot adjustment (RLS 280/EV model) ....... . . - Page 4 Contents 4.15.1 Supply cables and external connections passage........... . 33 4.15.2 Cable shielding .
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Page 5: Information And General Instructions
Information and general instructions Information and general instructions Information about the instruction manual 1.1.1 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 be away from moving mechanical parts;... -
Page 6: Delivery Of The System And The Instruction Manual
Information and general instructions 1.1.4 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 7: Safety And Prevention
Safety and prevention Safety and prevention Introduction The burners have been designed and built in compliance with cur- the type and pressure of the fuel, the voltage and frequency of the rent regulations and directives, applying the known technical rules electrical power supply, the minimum and maximum deliveries for of safety and envisaging all the potential danger situations. -
Page 8: Technical Description Of The Burner
Technical description of the burner Technical description of the burner Burner models designation Model Code RBNA Code Voltage Fan motor starting Flame safeguard 20124918 230/3/60 20116071 RLS 280/EV 20124919 460/3/60 Inverter Burner mounted 20124927 20122419 575/3/60 20124937 230/3/60 20114123 RLS 310/EV... - Page 9 Technical description of the burner Model RLS 410/EV RLS 510/EV 1.172 4.719 4.247* 1.465 5.627 5.064* High Mbtu/hr 4.000 16.100 14.490* 5.000 19.200 17.280* 28,6 103.5* 35,7 137,1 123,4* Output delivery Mbtu/hr 1.635 2.000 11,7 14,3 Oil n°2 Fuel Natural gas Gas max.
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Page 10: Electrical Data
Technical description of the burner Electrical data Fan motor and pump motor IE3/NEMA PREMIUM EFFICIENCY Model RLS 280/EV RLS 310/EV Control circuit power supply V/Ph/Hz 120/1/60 Main power supply (+/- 10%) V/Ph/Hz 230-460/3/60 575/3/60 230-460/3/60 575/3/60 Fan motor 3510 3510... -
Page 11: Packaging - Weight - Approximate Measurements
The overall dimensions of the packaging are shown in the Tab. E. The weight of the burner complete with its packaging is shown in Tab. E. inch RLS 280/EV 41” 32“ 4“ RLS 310/EV 2“... -
Page 12: Burner Dimensions
Bear in mind that inspection of the combustion head requires the burner to be opened by rotating the rear part on the hinge. 20123199 Fig. 2 inch RLS 280/EV 49 " " 6 " 10 " " ANSI 3" 19 "... -
Page 13: Burner Description
Technical description of the burner Burner description 11 24 30 17 20125119 Fig. 3 Lifting eyebolts 24 Pump 25 Pump motor Fan motor 26 Valve group (see Fig. 4 on page 12) Air gate valve servomotor 27 Minimum oil pressure switch Gas pressure test point 28 Nozzle delivery pressure gauge Combustion head... -
Page 14: Panel Board Description
Technical description of the burner 3.7.1 Panel board description 10 11 Fig. 4 20123200 Electronic cam 31 KO1 oil timer module and relay ON/OFF selector 32 KG1 gas timer module and relay OIL/OFF/GAS selector 33 KP oil pump timer module and relay LOCAL/REMOTE selector 34 KG2 auxiliary gas relay ALARM SILENCE push-button... -
Page 15: Firing Rates
Technical description of the burner Firing rates Maximum output must be selected in the hatched area of the dia- Model MBtu/hr gram (Fig. 5). RLS 280/EV 2.600 Minimum output must not be lower than the minimum limit shown RLS 310/EV 3.500 in the diagram. -
Page 16: Procedure To Refer Burner Operating Condition At An Altitude And/Or At A Combustion Supporter Air Temperature Different To The Standard Values (328 Ft Above Sea Level, 68 °F)
Technical description of the burner 3.8.1 Procedure to refer burner operating condition at an altitude and/or at a combustion supporter air temperature different to the standard values (328 ft above sea level, 68 °F). AIR TEMPERATURE Altitude Altitude bar. press. bar. -
Page 17: Control Box For The Air/Fuel Ratio (Lmv36
Technical description of the burner 3.10 Control box for the air/fuel ratio (LMV36...) Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! WARNING The LMV36... is a safety device! Do not open, interfere with or modify the unit. - Page 18 Technical description of the burner Technical data LMV36... basic unit Mains voltage AC 120 V -15 % / +10 % Mains frequency 50 / 60 Hz ±6 % Power consumption < 30 W (typically) Safety class I, with parts according to II and III to DIN EN 60730-1 Terminal loading Unit fuse F1 (internally) 6.3 AT...
- Page 19 Technical description of the burner Operation sequence of the burner Operation Startup Shutdown Valve proving TSA2 TSA1 Phase number Safety limit thermostat (STB) Control thermostat or pressurestat (R) Flame signal (FS) Air pressure switch (LP) Pressure switch-min (Pmin) Pressure switch-max (Pmax) Valve proving / leakage test (P LT) POC (alternative to Pmax) Motor (M)
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Page 20: Actuators (Sqm33.5
Technical description of the burner 3.11 Actuators (SQM33.5...) Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes should be observed! WARNING Do not open, interfere with or modify the actua- tors! All activities (mounting, installation and service work, etc.) must be performed by qualified staff. -
Page 21: Installation
Installation Installation Notes on safety for the installation After carefully cleaning all around the area where the burner will be The installation of the burner must be carried out by installed, and arranging the correct lighting of the environment, pro- qualified personnel, as indicated in this manual and ceed with the installation operations. -
Page 22: Preparing The Boiler
For boilers with front flue passes 1)(Fig. 18 on page 23) or flame in- version chamber, a protection in refractory material 5) must be in- serted between the boiler fettling 2) and the blast tube 4). inch The refractory can have a conical shape (minimum 60°). RLS 280/EV coarse 4” 16” 4”... -
Page 23: Accessibility To The Interior Of The Combustion Head
C). 20115885 Fig. 13 Electrode and ignition pilot adjustment (RLS 280/EV model) Place the pilot and electrodes as shown in Fig. 15. 1 7 / 1 6 " 20115902 Fig. 14... -
Page 24: Electrode And Ignition Pilot Adjustment (Rls 310 - 410 - 510/Ev Model)
Installation Electrode and ignition pilot adjustment ( RLS 310 - 410 - 510/EV model) Place the electrode and the ignition pilot observing the dimensions in Fig. 15. 1 3 7 / 6 4 " Fig. 15 20123208 Gas butterfly valve If necessary, replace the gas butterfly valve. -
Page 25: Combustion Head Setting
Installation 4.10 Combustion head setting Rotate the screw 1) until the notch you have found corresponds with the front surface of the screw itself. The combustion head is opened by turning the screw 1) anticlock- wise. The combustion head is closed by turning the screw 1) clockwise (Fig. -
Page 26: Nozzle
Installation 4.11 Nozzle In order to guarantee that emissions do not vary, recommended and/or alternative nozzles specified by the Manufacturer in the In- struction and warning booklet should be used. It is advisable to replace nozzles every year during regular maintenance operations. WARNING The use of nozzles other than those specified by the Manufacturer and inadequate regular maintenance... -
Page 27: Recommended Nozzles
Installation 4.11.2 Recommended nozzles Intermediate flow rates may be obtained by choosing the nozzle with a nominal flow rate slightly higher than that actually required. Supply Nozzle High Fire Low Fire Pressure MBtu/hr ( GCV ) Type kg/h By-pass Flow rate By-pass Flow rate Pressure... - Page 28 Installation Supply Nozzle High Fire Low Fire Pressure MBtu/hr ( GCV ) Type kg/h By-pass Flow rate By-pass Flow rate Pressure Pressure 5.000 35,7 6.500 46,4 13,4 7.500 53,6 14,7 8.500 60,7 14,7 9.500 67,9 15,0 10.500 75,0 18,6 11.500 82,1 20,8 12.500...
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Page 29: Hydraulic System
Installation 4.12 Hydraulic system 4.12.1 Double-pipe circuit It is good practice to ensure that the return and suction lines enter the burner from the same height; in this way it will be more improb- The burner is equipped with a self-priming pump which is capable able that the suction line fails to prime or stops priming. -
Page 30: Hydraulic Connections
Installation 4.13 Hydraulic connections The pumps are equipped with a by-pass that connects return Remove the plugs from the suction and return connections of line and suction line. the pump. Insert the hose connections with the supplied seals into the The pumps are installed on the burner with the by-pass closed connections and screw them down. -
Page 31: Pressure Variator
Installation 4.13.2 Pressure variator The pressure variator (Fig. 22), allows the pressure on the return line of the nozzle to be varied according to the required output. The pressure on the return line is adjusted by varying a section by means of the rotation of the servomotor, which also controls the gas butterfly valve at the same time. -
Page 32: Gas Feeding
Installation 4.14 Gas feeding Explosion danger due to fuel leaks in the presence The fuel supply line must be installed by qualified of a flammable source. personnel, in compliance with current standards Precautions: avoid knocking, attrition, sparks and and laws. WARNING heat. -
Page 33: Gas Pressure
Installation 4.14.2 Gas pressure MBtu/hr ( GCV ) 1 Δp ("WC) 2 Δp ("WC) The Tab. N shows minimum pressure losses along the gas supply 2.600 0,01 line depending on the maximum burner output operation. 3.500 0,02 The values shown in the Tab. N refer to natural gas (GCV). 4.500 0,03 Column 1... -
Page 34: Electrical Wiring
Installation 4.15 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 carried out by qualified personnel and in compliance with the regulations currently in force in the country of destination. -
Page 35: Supply Cables And External Connections Passage
Installation 4.15.1 Supply cables and external connections 4.15.2 Cable shielding passage It is very important to shield the motor cable 1) as All the cables to be connected to the burner are fed through the shown in Fig. 26. grommets. See Fig. 25. It is very important to fix the cable shielding as WARNING The use of the cable grommets can take various forms. -
Page 36: Installation Of Shielded Cables
Installation 4.15.3 Installation of shielded cables In the case of clamp type A: unscrew the screw until space is created for inserting the shielding of the shielded cable A1)(Fig. 27); insert the shielded cable with the shielding inside the clamp A2);... -
Page 37: Inverter Connection
Installation 4.15.4 Inverter connection Treatment of cables Countermeasures against cable noise Following, it is reported an example how to con- nect the Inverter. The treatment of cables is the most important countermeasure. For further information, please refer to the relevant The machinery manufacturers are requested WARNING Inverter instruction manual. -
Page 38: Thermal Relay Calibration
Installation 4.16 Thermal relay calibration 4.16.1 Electronic thermal relay Contact test NC (95-96) and NO (97-98)(Fig. 33) Insert in the window a little screwdriver and move it in the To reset, in the case of an intervention of the thermal relay, sense of the arrow. -
Page 39: Motor Connection At 208-230 Or 460V
Installation 4.17 Motor connection at 208-230 or 460V Please, pay attention to the indications in case of modification of the motors, manufactured for 208-230/460 IE3 voltage, maintenance, or substitution. NEMA Premium Efficiency voltage, have the same connection than IE2/Epact motors, but differ- ent connection than IE1 motors no more star/delta WARNING but star/double star. -
Page 40: 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 Check the correct working of the adjustment, com- by qualified personnel, as indicated in this manual mand and safety devices. -
Page 41: 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, set the parameters on the RWF55 regulator. Please refer to the specific manual for this operation. Turn the switch to position “ON”... -
Page 42: Final Calibration Of The Pressure Switches
Start-up, calibration and operation of the burner Final calibration of the pressure switches 5.8.1 Air pressure switch For the RLS 280 model, the air pressure switch is connected in dif- ferential mode and is activated by both the negative pressure of the air intake and the positive pressure from the fan. -
Page 43: Minimum Gas Pressure Switch
Start-up, calibration and operation of the burner 5.8.3 Minimum gas pressure switch Adjust the minimum gas pressure switch (Fig. 41) after having ad- justed the burner, the gas valves and the gas train stabiliser. With the burner operating at maximum output: –... -
Page 44: Burner Starting
Start-up, calibration and operation of the burner Burner starting Operating control closes, the ignition pilot starts and the Solenoid valves 5) - 6) -13) -14) open; the fuel passes through P.O.C. solenoid valves 16)-17) open (available as accessory), the piping 19), and enters the nozzle. -
Page 45: Steady State Operation
Start-up, calibration and operation of the burner 5.9.1 Steady state operation At the end of the starting cycle, the servomotor control then passes The burner shuts off when demand for heat is less than the to load control for boiler pressure or temperature. heat supplied by the burner in the MIN output. -
Page 46: Maintenance
Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, safe- Before carrying out any maintenance, cleaning or checking opera- ty, yield and duration of the burner. tions: It allows you to reduce consumption and polluting emissions and to keep the product in a reliable state over time. -
Page 47: Safety Components
Maintenance Flame inspection window Nozzles It is advisable to replace nozzles every year during regular main- Clean the flame inspection window 1)(Fig. 45). tenance operations. Do not clean the nozzle openings; do not even open them. Combustion must be checked after the nozzles have been changed. -
Page 48: Checking The Position Of The Speed Sensor
Maintenance Checking the position of the speed sensor The measurement of speed sensor 1)(Fig. 47) must be respected! WARNING To calibrate the speed sensor, proceed as follows: loosen the screws 3) rest the sensor on the disc extension 2); ... - Page 49 Appendix - Spare parts Appendix - Spare parts 20120900...
- Page 50 Appendix - Spare parts CODE DESCRIPTION 20075046 • TUBE 20109355 • • • TUBE 20118164 • ELECTRODE 20032433 • • • ELECTRODE 3012282 • ELECTRODE CONNECTION 3012722 • • • ELECTRODE CONNECTION 3012258 • INSULATOR 20123895 • IGNITION PILOT TUBE 20123901 •...
- Page 51 Appendix - Spare parts CODE DESCRIPTION 20014103 • • • • PRESSURE SWITCH 3006140 • • • • PRESSURE GAUGE 3003592 • • • • BAR 3012123 • • • • CONNECTOR 3012909 • • • • CONNECTOR 3013998 • •...
- Page 52 Appendix - Spare parts CODE DESCRIPTION 20086561 • • • • COVER 3013926 • • • • DISPLAY 20010969 • • • • RELAY 20125063 STARTER 20014366 • • • • FUSE HOLDER 20096592 • • • • POWER REGULATOR 3012841 •...
- Page 53 Appendix - Accessories Appendix - Accessories Gas train according to UL Standards The installer is responsible for the supply and instal- lation of any required safety device(s) not indicated in this manual. WARNING 20120900...
- Page 54 Appendix - Burner start up report Appendix - Burner start up report Model number: Serial number: Project name: Start-up date: Installing contractor: Phone number: GAS OPERATION : Low Fire Gas Supply Pressure: High Fire : Low Fire Main Power Supply: High Fire Control Power Supply: CO: Low Fire...
- Page 56 RIELLO S.p.A. I-37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.com RIELLO BURNERS NORTH AMERICA http://www.riello.ca 35 Pond Park Road 2165 Meadowpine Blvd Hingham, Massachusetts, Mississauga, Ontario U.S.A. 02043 1-800-4-RIELLO Canada L5N 6H6 Subject to modifications...