Riello RLS 28 Installation, Use And Maintenance Instructions
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Riello RLS 28 Installation, Use And Maintenance Instructions

Riello RLS 28 Installation, Use And Maintenance Instructions

Forced draught gas burner
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See also: Installation, Use and Maintenance Manual
Installation, use and maintenance instructions
Forced draught gas burner
Progressive two-stage or modulating operation
CODE
C9531000 (3483270)
C9532000 (3484170)
C9533000 (3484670)
C9533001 (3484670)
(3484675)
MODEL
RLS 28
RLS 38
RLS 50
RLS 50
C6505058 - 2915759 (5) - 11/2009

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Summary of Contents for Riello RLS 28

  • Page 1 Installation, use and maintenance instructions Forced draught gas burner Progressive two-stage or modulating operation CODE MODEL C9531000 (3483270) RLS 28 C9532000 (3484170) RLS 38 C9533000 (3484670) RLS 50 C9533001 (3484670) (3484675) RLS 50 C6505058 - 2915759 (5) - 11/2009...

  • Page 3: Table Of Contents

    Contents Information and general instructions ..............3 Information about the instruction manual .
  • Page 4 Contents Maintenance ..................22 Notes on safety for the maintenance .

  • Page 5: Information And General Instructions

    Information and general instructions Information and general instructions Information about the instruction manual 1.1.1 Introduction 1.1.4 Danger: live components The instruction manual supplied with the burner: This symbol indicates operations which, if not car- is an integral and essential part of the product and must not be ried out correctly, lead to electric shocks with lethal separated from it;...

  • Page 6: Guarantee And Responsibility

    Information and general instructions Guarantee and responsibility The manufacturer guarantees its new products from the installa- 1.2.1 Owner’s responsibility tion date, in accordance with the regulations in force and/or the Please pay attention to the Safety Warnings contained within sales contract. At the moment of the first start-up, check that the this instruction manual.

  • Page 7: Safety And Prevention

    Safety and prevention Safety and prevention Introduction Personnel training The burners have been designed and built in compliance with The user is the person, body or company that has acquired the current regulations and directives, applying the known technical machine and intends to use it for the specific purpose. He is re- rules 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 RLS 38 RLS 50 RLS 50 Output 2nd stage MBtu/hr 616 - 1232 882 - 1666 1092 - 2198 1092 - 2198 181 - 361...

  • Page 9: Accessories (Optional)

    L = Standard length L1 = Length obtainable with the kit NOTE: COD. 3010264 L = 7 L1 = 12 • RLS 28 2” 32” The installer is responsible for the supply and installation of COD. 3010265 L = 7 L1 = 13 •...

  • Page 10: Packaging - Weight - Approximate Measurements

    The weight of the burner complete with packaging is indicated D7639 in (Tab. C). Fig. 3 inch The maximum dimensions of the burners are given in (Fig. 3). RLS 28 32” 16” 16” Note that if you need to examine the combustion head, the burner RLS 38 must be pulled backward on the slide bars and turned upward.

  • Page 11: Firing Rates

    Firing rates RLS 28 D2537 The RLS 28 - 38 - 50 Model burners can work in two ways: low and high fire. MAXIMUM OUTPUT must be selected in area A. MINIMUM OUTPUT must not be lower than the minimum limit...

  • Page 12: Installation

    Installation Installation Notes on safety for the installation After carefully cleaning all around the area where the burner will The installation of the burner must be carried out by be installed, and arranging the correct lighting of the environ- qualified personnel, as indicated in this manual and ment, proceed with the installation operations.

  • Page 13: Boiler Plate

    Installation Boiler plate Drill the combustion chamber mounting plate as shown in (Fig. 6). The position of the threaded holes can be marked using the head gasket supplied with the burner. inch RLS 28 32“ 16“ RLS 38 32“ 16“...

  • Page 14: Choice Of Nozzles For 1St And 2Nd Stage

    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 Model Boiler output = 921 MBtu/hr @ efficiency 80 % Output required by the burner = 921 / 0.8...

  • Page 15: Nozzle Assembly

    Installation Nozzle assembly Remove screw 1) (Fig. 8, page 12) and extract the internal part 2) The nozzle for low fire operation is the one underneath the firing (Fig. 8, page 12) Install two nozzles with the box wrench 1) (Fig. 9), electrodes (Fig.

  • Page 16: Adjustments Before First Firing (Light-Oil Operation)

    Installation Adjustments before first firing (light-oil operation) • Combustion head setting SETTING THE COMBUSTION HEAD The setting of the combustion head depends exclusively on the delivery of the burner at high fire. Turn screw 5) (Fig. 13) until the notch shown in diagram (Fig. 14) is level with the front sur- face of flange 6) (Fig.

  • Page 17: Pump

    Installation 4.11 Pump Suction 1/4” NPT Return 1/4” NPT Pressure gauge attachmentG 1/8” Vacuum gauge attachmentG 1/8” Pressure regulator Min. delivery rate at 174 PSI pressure Delivery pressure range Max. suction pressure Viscosity range Max fuel oil temperature Max. suction and return pressure Pressure calibration in the factory Filter mesh width PUMP...

  • Page 18: 4.12 Fuel Supply

    Installation 4.12 Fuel supply The tank lower than the burner B Pump suction values higher than 13 “Hg must not be exceeded be- cause at higher levels gas is released from the fuel, the pump starts making noise and its working life-span decreases. It is good practice to ensure that the return and suction lines enter the burner from the same height;...

  • Page 19: 4.14 Pump Priming

    Installation 4.14 Pump priming Before starting the burner, make sure that the tank return line is not clogged. Obstructions in the line could cause the pump seal located on the pump shaft to break. (The pump leaves the factory with the by-pass closed). Also check to make sure that the valves located on the suction line are open and that there is sufficient fuel in the tank.

  • Page 20: 4.16 Gas Pressure

    2007 5.00 2198 5.51 A high fire ouput of 796 MBtu/hr shown in table RLS 28 corre- sponds to 2.87” WC pressure, natural gas. Tab. J This value serves as a rough guide, the effective delivery must be measured at the gas meter.

  • Page 21: Gas Train

    Installation 4.18 Gas train It must be type-approved according to UL Standards and is sup- plied separately from the burner. TYPICAL SCHEMATIC GAS PIPING NOTE: See the accompanying instructions for the adjustment of the gas train. Key to layout Gas input pipe Manual valve Pressure regulator Low gas pressure switch...

  • Page 22: 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 23: Air Pressure Switch - Co Check

    Start-up, calibration and operation of the burner 5.4.3 Air pressure switch - CO check 5.4.4 Low gas pressure switch Adjust the air pressure switch after having performed all other burn- Adjust the low gas pressure switch after having performed all the er adjustments with the air pressure switch set to the start of the other burner adjustments with the pressure switch set at the start scale (Fig.

  • Page 24: Maintenance

    Maintenance Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, Combustion head safety, yield and duration of the burner. Open the burner and make sure that all components of the com- It allows you to reduce consumption and polluting emissions and bustion head are in good condition, not deformed by the high tem- to keep the product in a reliable state over time.

  • Page 25: Opening The Burner

    Maintenance Opening the burner Hydraulic system layout Pump suction 6.2.1 To open the burner: Filter Pump – switch off the electrical power. Pressure regulator – Remove screws 1) and withdraw cover 2). Return pipe – Disconnect the light-oil pipes 7). By-pass screw –...

  • Page 26: Electrical System

    Electrical system Electrical system 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 27: Field Wiring Connections

    Fig. 33 D8348 depending on the burner model (see page 6). The RLS 28-38-50 burners have been type-approved for intermit- The RLS 50 single-phase burner leaves the factory preset for tent operation. This means they should compulsorily be stopped at...
  • Page 28 Electrical system C6505058 - 2915759...
  • Page 29 Electrical system C6505058 - 2915759...
  • Page 30 Electrical system C6505058 - 2915759...
  • Page 31 Electrical system C6505058 - 2915759...
  • Page 32 Electrical system C6505058 - 2915759...
  • Page 33 Electrical system C6505058 - 2915759...
  • Page 34 Electrical system C6505058 - 2915759...
  • Page 35 Electrical system Key to Layouts Pressure probe Tree-wire probe Pt100 Temperature probe with two-wire circuit + BB Components on board burners + BQ Components on board main panel + BC Components on board boller Relay Pump motor capacitor DISC1 Disconnect switch motor DISC2 Disconnect switch auxiliary Motor fuse...

  • Page 36: Burner Firing Rates According To Air Density

    Electrical system Burner firing rates according to air density CORRECTION FACTOR F average barom. above sea level Air temperature pressure °F (°C) “ W.C. mbar 0 (0°C) 41 (5°C) 50 (10°C) 59 (15°C) 68 (20°C) 77 (25°C) 86 (30°C) 104 (40°C) 1013 1,087 1,068...

  • Page 37: Flame Signal

    Electrical system Flame signal Min value for a good signal: 70 µA. If the value is lower, it can be due to: • Worn scanner; D1143 • Low current; • Bad set up of the burner. Fig. 35 In order to measure the current, use a microammeter of 100 mA c.c., connected to the scanner, with a capacitor of 100 mF - 1V c.c.
  • Page 38 Electrical system Control program under fault In case of any disturbance, the sequence mechanism stops and with it the lock-out indicator. The symbol above the reading mark of the indicator gives the type of disturbance: conditions and lock-out indication No start, e.g. because one contact is not closed. Lock-out during or after control program sequence due to extraneous light (e.g.
  • Page 39 Electrical system 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 High Fire Burner Firing Rate: : Low Fire...

  • Page 40: Spare Parts

    Spare parts Spare parts Exploded spare parts list C6505058 - 2915759...

  • Page 41: Spare Parts List

    Spare parts Spare parts list COD. DESCRIPTION • • • • • 3012508 AIR DAMPER ASSEMBLY • • • • • 3013013 ANCHOR PLATE • • • • • 3013014 CONDENSER • 3012988 CONDENSER • • • • • 3012992 OVERLOAD •...
  • Page 42 Spare parts COD. DESCRIPTION • • 3012989 CONTACTOR • • 3012990 CONTACTOR • 20006633 CONTACTOR • • • • 3013019 SUPPORT • 3013878 SUPPORT • • • • • 3003830 SOUND DAMPING • • • • • 3012316 HALF-SHELL • • • • • 3003780 FAIRLEAD •...
  • Page 43 Spare parts COD. DESCRIPTION • 3003805 SHUTTER • 3012312 SHUTTER • • • 3003806 SHUTTER • 3012313 END CONE • 3012314 END CONE • • • 3003811 END CONE • 3013874 PROTECTION • • • • • 3003322 CONNECTOR • • • • • 3012384 OIL PRESSURE SWITCH •...
  • Page 44 RIELLO S.p.A. I - 37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.rielloburners.com RIELLO BURNERS NORTH AMERICA 1-800-4-RIELLO 35 Pond Park Road 2165 Meadowpine Blvd. Hingham, Massachusetts, 1-800-474-3556 Mississauga, Ontario, U.S.A. 02043 Canada L5N 6H6 http://www.riello-burners.com Subject to modifications...

This manual is also suitable for:

Rls 50Rls 38

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