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Summary of Contents for Riello RLS 28/M
- Page 1 Installation, use and maintenance instructions Dual fuel light oil/gas burners Progressive two stage oil or modulating gas operation CODE MODEL C9331500 RLS 28/M C9332500 - C9332550 RLS 38/M C9332501 - C9332551 C9333553 - C9333503 C9333500 - C9333510 RLS 50/M C9333501...
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Page 3: Table Of Contents
Contents Information and general instructions ..............3 Information about the instruction manual . - Page 4 Contents Servomotor ................. 26 5.4.1 Cams and trim potentiometers functions .
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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 Technical data Model RLS 28/M RLS 38/M RLS 50/M Output MBtu/hr 616 - 1232 882 - 1666 1092 - 2198 stage 181 - 361 258 - 488 320 - 644 Delivery 4.4 - 8.8... -
Page 9: Three Phase Burner
850 + 750 860 + 750 850 + 750 860 + 750 Electrical protection NEMA 1 Burner models designation Model Code Code RBNA Voltage Flame safeguard RLS 28/M 20019604 C9331500 120/1/60 Burner mounted 20019614 C9332500 120/1/60 C9332550 208/3/60 RLS 38/M Burner mounted... -
Page 10: Packaging - Weight - Approximate Measurements
Packaging - weight - Approximate measurements The burners are skid mounted. Outer dimensions of packaging are indicated in Tab. C. The weight of the burner complete with packaging is indicated in Tab. C. inch RLS 28/M 4“ 8“ 32“ RLS 38/M 4“... -
Page 11: Firing Rates
Technical description of the burner Firing rates The burners can work in two ways: low and high fire. MAXIMUM OUTPUT must be selected in area A. RLS 28/M D2537 MINIMUM OUTPUT must not be lower than the minimum limit shown in the diagram:... - Page 12 Technical description of the burner CORRECTED BURNER CAPACITY ACCORDING TO ALTITUDE Altitude m a.s.l. 1220 1525 1830 2135 2440 Rated Capacity ft a.s.l 1000 2000 3000 4000 5000 6000 7000 8000 1000 1000 1023 1061 1101 1142 1186 1232 1282 1337 1500 1481...
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Page 13: Minimum Furnace Dimensions
Technical description of the burner Minimum furnace dimensions The firing rates were set in relation to certified test boilers. Diameter (inches) Fig. 4 indicates the diameter and length of the test combustion chamber. Example Output 1388 MBtu/hr: diameter 20 inch - length 4.9 ft. Fig. -
Page 14: Burner Description
Technical description of the burner Burner description Combustion head Ignition electrodes Screw for combustion head adjustment Sleeve Low air pressure switch Air head test point Gas pressure test point and head fixing screw Screw securing fan to sleeve Slide bars for opening the burner and inspecting the combustion head 10 Pump 11 Safety solenoid valve... -
Page 15: Honeywell Control Box
Technical description of the burner 3.10 Honeywell control box Wiring subbase Run/test switch Relay module Configuration jumpers Purge timer Sequence status led panel Reset button Captive mounting screw Keyboard display module Flame amplifier S8158 Fig. 6 APPLICATION SPECIFICATIONS The Honeywell RM7840 ... Relay Modules are microprocessor- Electrical ratings based integrated burner controls for automatically fired gas, oil, or Voltage and Frequency:... -
Page 16: Rm7840
Technical description of the burner 3.10.1 RM7840 ... sequence diagram S8160 Fig. 7 The installation of the device must be carried out by For further and specific information (setting and service work, etc.), qualified personnel, as indicated in this manual and please refer to the specific instruction of the control box. -
Page 17: Installation
Boiler plate Drill the combustion chamber mounting plate as shown in Fig. 8. The position of the threaded holes can be marked using the head gasket supplied with the burner. inch RLS 28/M 32“ 16“ RLS 38/M - 12 16“... -
Page 18: Blast Tube Length
The range of lengths available, L (inch), is as follows: Model RLS 28/M “ RLS 38/M “ RLS 50/M “... -
Page 19: Nozzle Assembly
Use nozzles with a 60° spray angle at the recommended pressure of 174 PSI.The two nozzles usually have equal deliveries. Example with the RLS 28/M model Boiler output = 921 MBtu/hr - efficiency 80 % Output required by the burner = 921 / 0.8... -
Page 20: Light Oil Supply
Installation Light oil 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 interception tap 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 21: Hydraulic System Layout
Installation 4.8.2 Hydraulic system layout 4.8.3 Hydraulic connections The pumps are equipped with a by-pass that connects return line and suction line. The pumps are installed on the burner with the by-pass closed by screw 6), see diagram Fig. 14. It is therefore necessary to connect both hoses to the pump. -
Page 22: Pump
Installation 4.8.4 Pump If the pump fails to prime at the first starting of the burner and the burner locks out, reset the burner, and then repeat the starting op- Pump model AL 65 eration. Min. delivery rate at 174 PSI pressure 21.5 Do not illuminate the UV scanner cell or the burner will lock out. -
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 that the fuel interception tap 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 Pressure
= 0.79” WC 1.92 - 0.79 = 1.13” WC A high fire ouput of 796 MBtu/hr shown in table RLS 28/M corre- sponds to 1.13” WC pressure, natural gas. This value serves as a rough guide, the effective delivery must be measured at the gas meter. -
Page 25: Electrical Wiring
Installation 4.10 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 26: Thermal Relay Calibration
Installation 4.11 Thermal relay calibration Depending on the burner type, there are two different thermal re- 4.11.2 Electronic thermal relay lays: ➤ To reset, in the case of an intervention of the thermal relay, – Electro-mechanical termal relay (used for single phase motors) press the button “RESET”... -
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 Check the correct working of the adjustment, com- by qualified personnel, as indicated in this manual mand and safety devices. -
Page 28: Servomotor
Start-up, calibration and operation of the burner Servomotor The servomotor gives simultaneous regulation of the air damper through the variable cam profile 4)(Fig. 29) and the gas butterfly Black wire valve. It rotates by 90° in approx. 24 s. The factory settings must not be changed for the first firing, just Blue wire check that they comply with the details below. -
Page 29: Cams And Trim Potentiometers Functions
Ignition pilot adjustment Place the pilot and electrode as shown in Fig. 36. The pilot works correctly at pressures ranging from 3 - 4” WC. Model 11 / 64” RLS 28/M 43 / RLS 38/M 64” 55 / 64” RLS 50/M D10875 Fig. -
Page 30: 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 NOTE: boiler panel. for further information, please refer to the specific instruction of the control box. Close the thermostats/pressure switches, set the parameters on the RWF 40 regulator (if is installed). -
Page 31: High Fire Fan Air Damper
Start-up, calibration and operation of the burner 5.7.7 High fire fan air damper Turn "MANUAL" switch (Fig. 37) to “+”, increase output until the high fire position is acheived. The fan damper position is set by ad- justing the cam 4 position (Fig. 33, page 27) of the servomotor. 5.7.8 Low oil pressure switch The low oil pressure switch (Fig. -
Page 32: Minimum Burner Output
Start-up, calibration and operation of the burner 5.8.5 Minimum burner output 5.8.6 Intermediate outputs Minimum output must be selected within the “Firing rates” range Adjustment of gas delivery shown at page 9. No adjustment of gas delivery is required. ➤ Move the selector 21)(Fig. 5, page 12) to “MAN” position. ➤... -
Page 33: Pressure Switch Adjustment
Start-up, calibration and operation of the burner Pressure switch adjustment 5.9.1 Air pressure switch Adjust the air pressure switch (Fig. 40) after having performed all other burner adjustments with the air pressure switch set to the start of the scale. With the burner operating at min. -
Page 34: Flame Signal Measurement
Start-up, calibration and operation of the burner 5.10 Flame signal measurement 5.10.1 Preliminary inspection ➤ For all optical detectors, clean the detector viewing window, lens, and inside of the sight pipe as applicable. Make certain that: ➤ With the burner running, check the temperature at the detec- –... -
Page 35: Final Checks (With The Burner Working)
Start-up, calibration and operation of the burner ➤ If you still cannot obtain a proper flame signal, replace flame detector or UV radiation sensing tube. Positive (+) meter lead One megohm/voltmeter Negative (-) meter lead Flame simulator test jack S8157 Fig. -
Page 36: Maintenance
Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, safe- ty, yield and duration of the burner. Disconnect the electrical supply from the burner by It allows you to reduce consumption and polluting emissions and to means of the main system switch. - Page 37 Maintenance UV scanner ➤ Be extremely careful while troubleshooting the detector; line voltage is present on some of the terminals when power is on. WARNING ➤ Open the master switch to disconnect power before removing or installing the detector. Periodic maintenance and cleaning ➤...
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Page 38: Opening The Burner
Maintenance Opening the burner Disconnect the electrical supply from the burner by 4" means of the main system switch. DANGER Turn off the fuel interception tap. DANGER Wait for the components in contact with heat sourc- es to cool down completely. To open the burner proceed sa follows: ➤... -
Page 39: Closing The Burner
Maintenance Closing the burner To close the burner proceed sa follows: ➤ push the burner 16)(Fig. 47) at approximately 4” from the elec- trical board 17); ➤ insert the ignition electrode cables and then slide the burner up to the sleeve. ➤... -
Page 40: A Appendix - Spare Parts
Appendix - Spare parts Appendix - Spare parts 20019893... - Page 41 Appendix - Spare parts CODE DESCRIPTION • • • 3012085 AIR DAMPER ASSEMBLY • • • 3013014 CONDENSER • • • 20030705 CONTACTOR • • • 3013015 JACK • • • 3013016 COIL • • • 3013017 PUMP • • • 3006717 JOINT •...
- Page 42 Appendix - Spare parts CODE DESCRIPTION • 3005483 SEAL • • 3005482 SEAL • • • 3012956 TRANSFORMER • • • 3012938 TRANSFORMER • 20031229 ELECTRODE • • 3013041 ELECTRODE • 20031231 ELECTRODE • • 3013040 ELECTRODE • 20031244 ELECTRODE •...
- Page 43 Appendix - Spare parts CODE DESCRIPTION • 3012438 SQUARE • 3003805 SHUTTER • 3003806 SHUTTER • 3003983 SHUTTER • 3012313 END CONE • 20031837 END CONE • 3012444 END CONE • • • 3003322 CONNECTOR • • • 3012384 OIL PRESSURE SWITCH •...
- Page 44 Appendix - Spare parts CODE DESCRIPTION • • • 20031273 SPACER • • • 20031274 CAM-HOLDER SHAFT • • • 20031277 • • • 20031281 INDEX • • • 20031282 • • • 3003764 • • • 20026790 C5360002 CONTROL BOX BASE •...
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Page 45: B Appendix - Accessories
Appendix - Accessories Appendix - Accessories • Gas train according to UL Standards The installer is responsible for the supply and installation of any required safety device(s) not indicated in this manual. WARNING 20019893... -
Page 46: Appendix - Burner Start Up Report
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 Gas Supply Pressure: : Low Fire High Fire Main Power Supply: : Low Fire High Fire Control Power Supply: CO: Low Fire... - Page 48 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...
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