Riello RS 28/M Installation, Use And Maintenance Instructions
Forced draught gas burners
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Summary of Contents for Riello RS 28/M
- Page 1 Installation, use and maintenance instructions Forced draught gas burners Low-High-Low or Modulating Operation CODE MODEL 20165993 RS 28/M 20166042 RS 38/M 20166043 RS 50/M 20154169 (2) - 11/2020...
- Page 2 Original instructions...
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Page 3: Table Of Contents
Contents Information and general instructions ..............3 Information about the instruction manual . - Page 4 Contents 5.2.1 Servomotor ................. 26 Burner start-up.
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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 RS 28/M RS 38/M RS 50/M RS 50/M Output MBtu/hr 617 - 1232 880 - 1665 1099 - 2201 1099 - 2201 High 181 - 361 258 - 488... -
Page 9: Burner Models Designation
Technical description of the burner Burner models designation Model RIELLO code RBNA code Voltage Flame safeguard RS 28/M TC FS1 20154108 20165993 120/1/60 Burner mounted RS 38/M TC FS1 20154129 20166042 120/1/60 RS 38/M TC FS1 20154134 Burner mounted RS 38/M TC FS1... -
Page 10: Firing Rate
The maximum output is chosen within area of the Fig. 2. The minimum output must not be lower than the minimum limit of the diagrams. D2259 RS 28/M = 198 MBtu/hr 58 kW RS 38/M = 266 MBtu/hr 78 kW RS 50/M = 321 MBtu/hr 94 kW NOTE:... -
Page 11: 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 3.6.1 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. press. °C ft a.s.l. -
Page 12: Burner Description
Technical description of the burner Burner description 20183685 20183686 20183588 Fig. 4 Combustion head Two types of burner failure may occur: Ignition electrode • FLAME SAFEGUARD LOCK-OUT: if the flame relay Screw for combustion head adjustment 20)(Fig. 4) push-button lights up, it indicates that the burner is Sleeve in lock-out. -
Page 13: Electrical Panel Description
Technical description of the burner Electrical panel description 20183684 Fig. 5 Switch for: automatic-manual-OFF operation Button for: increase - decrease output Motor contactor Thermal relay with reset button Bracket for the application of RWF kit Control box base Ignition transformer Relay Terminal board for electrical connection 3 poles plug and socket... -
Page 14: Rfgo-A13 Control Box
The control box is a safety device! Avoid opening or WARNING modifying it, or forcing its operation. Riello S.p.A. cannot assume any responsibility for damage re- sulting from unauthorised interventions! All interventions (assembly and installation operations, assis- tance, etc.) must be carried out by qualified personnel. -
Page 15: Sqn70 Servomotor
Technical description of the burner 3.11 SQN70 Servomotor Important notes To avoid accidents, material or environmental damage, observe the following instructions! Avoid opening, modifying forcing WARNING servomotor. All interventions (assembly and installation operations, assistance, etc.) must be carried out by qualified personnel. ... -
Page 16: 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 17: Boiler Plate
Drill the combustion chamber mounting plate as shown in Fig. 8. The position of the threaded holes can be marked using the burner head gasket supplied with the burner. inch RS 28/M 6 9 / 32 “ 8 13 / 16 “ 3 / 8 W RS 38/M 6 9 / 32 “... -
Page 18: Ignition Pilot Adjustment
Installation Ignition pilot adjustment Place the pilot and electrode as shown in Fig. 11. Ignition pilot The pilot works correctly at pressures ranging from 5 - 12” WC. Probe IMPORTANT To set pilot without main burner operation, use the function “Check mode”... - Page 19 Modulation minimum output: when the MIN output is within the value range given Tab. J, the gas ring 2)(Fig. 12 - B) is adjusted to zero. Model MBtu/hr RS 28/M 198 - 280 RS 38/M 266 - 375 RS 50/M...
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Page 20: Gas Supply
Installation Gas supply 4.9.1 Gas train 4.9.2 Gas feeding line Explosion danger due to fuel leaks in the presence of a flammable source. Check that there are no gas leaks. Precautions: avoid knocking, attrition, sparks and heat. Make sure the fuel interception tap is closed before Pay attention when handling the train: danger of performing any operation on the burner. -
Page 21: Gas Pressure
3.11 • Pressure in combustion chamber = 0.79” WC 2.36 - 0.79 = 1.57” WC 1552 2.36 3.54 An output of 795 MBtu/hr shown in - RS 28/M corresponds to 1665 4.21 1.57” WC pressure, column 1. 1090 0.87 0.87 This value serves as a rough guide, the exact flow rate must be measured at the gas meter. -
Page 22: 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 made in accordance with the regulations currently in force in the country of destination and by qualified personnel. -
Page 23: Supply Cables And External Connections Passage
Installation 4.10.2 Supply cables and external connections passage The control panel is in compliance with UL508A. All the cables to be connected to the burner are fed through the holes of the right and left plates after unscrewing the screws 8) and WARNING opening the pre-trimmed hole (Fig. -
Page 24: Motor Connection At 208-230 Or 460V
Installation 4.12 Motor connection at 208-230 or 460V WARNING: the motors, manufactured for 208-230/460 IE3 NEMA Premium Efficiency voltage, have the same connection than IE2/Epact motors, but different connection than IE1 motors no more star/delta but star/double star. Please, pay attention to the indications in case of modification of voltage, maintenance, or substitution. IE2/Epact - IE3 NEMA Premium Efficiency S8380 S8379... -
Page 25: Motor Rotation
Installation 4.14 Motor rotation As soon as the burner starts up, go in front of the cooling fan of the fan motor and check it is rotating anticlockwise (Fig. 23). If this is not the case: set the burner switch to “0” (OFF) and wait for the control box to carry out the switch-off phase. -
Page 26: Burner Operation
Installation 4.15 Burner operation 4.15.1 Burner starting FULL MODULATION • Operating closes. 20159662 Fan motor starts. • Servomotor starts: 90° rotation to right, until contact is made on red cam. The air damper is positioned to MAX. output. • Pre-purge stage with air delivery at MAX. output. •... -
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 5.2.1 Servomotor The servomotor provides simultaneous adjustment of the air damp- RED CAM er, by means of the variable profile cam, and the gas butterfly valve. BLUE CAM The angle of rotation of the servomotor is equal to the angle on the graduated sector controlling the gas butterfly valve. -
Page 29: Burner Calibration
Start-up, calibration and operation of the burner Burner calibration The optimum calibration of the burner requires an analysis of the 5.5.3 Minimum output flue gases at the boiler outlet. Minimum output must be selected within the firing rate range Adjust successively: shown on page 8. -
Page 30: Final Calibration Of The Pressure Switches
Start-up, calibration and operation of the burner Final calibration of the pressure switches 5.6.1 Air pressure switch - CO check Adjust the air pressure switch after having performed all other burn- er adjustments with the air pressure switch set to the start of the scale (Fig. -
Page 31: 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 32: Flame Presence Check
Maintenance D484 Check to make sure that no dust has accumulated inside the fan or on its blades, as this condition will cause a reduction in the air flow rate and provoke polluting combustion. Burner Check that the graduated sector that controls the air damper is se- cured by the nut 2)(Fig. -
Page 33: Opening The Burner
Maintenance Opening the burner Switch off the electrical power; remove screw 1)(Fig. 36) and withdraw cover 2); Disconnect the electrical supply from the burner by disengage the swivel coupling 3) from the graduated sector 4). means of the main system switch. ... -
Page 34: Led Indicator And Special Function
LED indicator and special function LED indicator and special function 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 position- Open... -
Page 35: Led Lamps: Burner Operating Status
LED indicator and special function LED lamps: burner operating status OPERATING STATUSES INDICATED BY LEDS DURING NORMAL OPERATION AND CHECK MODE Operation Open Closed Modulation Ignition Flame Status LED ● = ON damper damper Icon S9740 S9741 S9742 S9743 S9744 S9745 S9746 Power OFF/ON... -
Page 36: Problems - Causes - Remedies Signalled By Led Indicators
Problems - Causes - Remedies signalled by LED indicators Problems - Causes - Remedies signalled by LED indicators When an emergency stop occurs, the control device LEDs indicate Thermal unit’s operation, maintenance the cause of the stop. troubleshooting interventions must be carried out The terminal T3 is not powered. - 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 Supervisor processor timeout ● ● ● ● Off-specification mains voltage ● ● ● ● Off-specification mains voltage ●...
- Page 39 Problems - Causes - Remedies signalled by LED indicators Fault explanation Faults Cause Solution Post-diagnostics fault Initial power diagnostics fault Make sure that the status of inlets and outlets Check T12, T13 and T14 is correct upon ignition Local reset The user started the manual reset or the reset Check T21 inlet or reset for normal operation switch is faulty...
- Page 40 Problems - Causes - Remedies signalled by LED indicators Faults Cause Solution False flame in stand-by mode Unexpected flame (false or parasitic flame) Check flame sensor or interference detected during the Stand-by status Not used Internal processor timeout Internal fault Replace the control device Internal processor timeout Internal fault...
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Page 41: A Appendix - Spare Parts
Appendix - Spare parts Appendix - Spare parts 20154169... - Page 42 Appendix - Spare parts CODE DESCRIPTION 3012985 • 3012986 • • • 3003760 • • • 3012063 • • • • • • • GRADUATE SECTOR 3003830 • • • • • • • SOUND DAMPING 3003890 • • • •...
- Page 43 Appendix - Spare parts CODE DESCRIPTION 3012995 • • • • • • • H.T.LEAD 3003844 • FERRULE 3003845 • • • FERRULE 3003846 • • • FERRULE 3003854 • • • • • • • ELBOW 3013129 • • •...
- Page 44 Appendix - Spare parts CODE DESCRIPTION 3003811 • • • END CONE 20144947 • • • • • • • CONTROL BOX BASE 3003893 • • • • • • • CONNECTOR 3003875 • • • • • • • GRADUATE SECTOR 3013003 •...
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Page 45: Appendix - Accessories
Standard head length (inch) Code (inch) 8 1 / 2 ” 13 13 / 16 3010256 RS 28/M 8 1 / 2 ” 13 13 / 16 ” 3010257 RS 38/M 8 1 / 2 ” 13 13 / 16 ”... -
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: Model number: Serial number: Project name: Start-up date: Installing contractor: Phone number: GAS OPERATION : Low Fire Gas Supply Pressure: High Fire : 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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