Riello RS 50/E MZ Installation, Use And Maintenance Instructions
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Riello RS 50/E MZ Installation, Use And Maintenance Instructions

Riello RS 50/E MZ Installation, Use And Maintenance Instructions

Forced draught gas burners, progressive two-stage or modulating operation
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Installation, use and maintenance instructions
Forced draught gas burners
GB
Progressive two-stage or modulating operation
Code
3781632
3781633
Model
RS 50/E MZ
RS 50/E MZ
Type
826 T2
826 T2
20005963 (3) - 06/2010

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Summary of Contents for Riello RS 50/E MZ

  • Page 1 Installation, use and maintenance instructions Forced draught gas burners Progressive two-stage or modulating operation Code Model Type 3781632 RS 50/E MZ 826 T2 3781633 RS 50/E MZ 826 T2 20005963 (3) - 06/2010...
  • Page 2 Declaration of conformity in accordance with ISO / IEC 17050-1 Manufacturer: RIELLO S.p.A. Address: Via Pilade Riello, 7 37045 Legnago (VR) Product: Forced draught gas burner Model: RS 50/E MZ These products are in compliance with the following Technical Standards:...

  • Page 3: Table Of Contents

    Contents Section Page Information and general warnings Information about the instruction manual Guarantee and responsibility Safety and prevention Introduction Personnel training Technical description of the burner Burner designation Models available Burner categories - Countries of destination Technical data Burner weight Overall dimensions Firing rate Burner components...

  • Page 4: Information And General Warnings

    Information and general warnings Information about the instruction manual Introduction DANGER: LIVE COMPONENTS The instruction manual supplied with the burner: This symbol indicates operations which, if not  is an integral and essential part of the product and must not carried out correctly, lead to electric shocks be separated from it;...

  • Page 5: Safety And Prevention

    Safety and prevention Introduction burners have been designed and built in compliance In particular: with current regulations and directives, applying the known tech- it can be applied to boilers operating with water, steam, dia- nical rules of safety and envisaging all the potential danger situ- thermic oil, and to other users expressly named by the man- ations.

  • Page 6: Technical Description Of The Burner

    230/50/60 BASIC DESIGNATION EXTENDED DESIGNATION Models available Designation Voltage Code RS 50/E MZ 3 ~ 400 / 230V - 50Hz 3781632 RS 50/E MZ 3 ~ 400 / 230V - 50Hz 3781633 Burner categories - Countries of destination Country of destination...

  • Page 7: Technical Data

    Technical description of the burner Technical data Model RS 50/E MZ Type 826 T2 Output maximum 285 - 630 Mcal/h 245 - 542 minimum Mcal/h Fuel Natural gas: G20 - G23 - G25 Gas pressure at max. output - Gas: G20/G25 mbar 8.5 - 11.3...

  • Page 8: Firing Rate

    Technical description of the burner Firing rate D9090 The maximum output is chosen within area A. The minimum output must not be lower than the minimum limit of the diagram. Important The firing rate was obtained considering an ambient temperature of 20°C and an atmospheric pressure of 1013 mbar (approx.

  • Page 9: Burner Components

    Technical description of the burner Burner components seen from A Fig. 5 D8741 1 Combustion head 13 Filter to protect against radio distur- 21 Air pressure socket 2 Ignition electrode bance 22 Flame sensor probe 3 Screw for combustion head adjustment 14 Flame inspection window 23 Air damper 4 Pipe coupling...

  • Page 10: Control Box For The Air/Fuel Ratio

    Technical description of the burner 3.10 Control box for the air/fuel ratio D8266 Fig. 6 Introduction Technical data The control box for the air/fuel ratio (hereafter referred to simply Electrical supply AC 230V - 15% / as the control box), that equips the burners of the RS range, car- +10% ries out a series of integrated functions in order to optimise Frequency...

  • Page 11: Servomotors

    Technical description of the burner 3.11 Servomotors Introduction The servomotors that equip the burners of the RS range work directly on the air damper and the gas butterfly valve, without mechanical lever- ages but via the interposition of a coupling. They are commanded by the control box, which constantly checks their position by means of a return signal from the optic sensor inside the ser- vomotor.

  • Page 12: Installation

     the model (see A in Fig. 8) and type of burner (B); GAZ-AEPIO  the year of manufacture, in cryptographic form (C); RIELLO S.p.A. I-37045 Legnago (VR)  the serial number (D);  the data for electrical supply and the protection level (E);...

  • Page 13: Operating Position

    The position of the threaded holes can be marked using the thermal insulation screen supplied with the burner. Fig. 10 D455 RS 50/E MZ Fig. 11 D8743 Length of the blast tube The length of the blast tube must be selected according to the...
  • Page 14 Installation Securing the burner to the boiler Probe Electrode Before fixing the burner to the boiler, check from the opening of the blast tube that the probe and the elec- trode are correctly positioned, as in Fig. 12 If, in the previous check, the position of the probe or electrode was not correct, remove the screw 1)(Fig.

  • Page 15: Combustion Head Adjustment

    Installation Combustion head adjustment At this stage of installation, the blast tube and the pipe coupling are secured to the boiler as shown in Fig. 14 Therefore it is particulary easy to carry out the combustion head adjustments: air and gas. MINIMUM OUTPUT MODULATIONS: when the MIN output is between 80 ÷...
  • Page 16 Installation Once the combustion head adjustment is completed: reassemble the burner on the guides 3) at about 100 mm from the pipe coupling 4) - burner in the position shown in Fig. 11;   insert the probe and electrode cables, then slide the burner as far as the pipe coupling - burner in the position shown in Fig. 16; ...

  • Page 17: Assembly Of The Gas Train

    Installation Assembly of the gas train  The gas train is type-approved according to standard EN 676 and is sup- plied separately from the burner, with the code indicated in Appendix B.  The gas train can enter the burner from the right or left side, depending on which is the most convenient, see Fig.

  • Page 18: Electrical Wiring

     The RS 50/E MZ burner has been approved for internal use. This means that it should compulsorily be stopped at least once every 24 hours to enable the control box to per- form checks of its own start-up efficiency. Normally, burner stopping is guaranteed by the boiler's thermostat/ pressure switch.

  • Page 19: Calibration Of The Thermal Relay

    Installation Calibration of the thermal relay The thermal relay serves to avoid damage to the motor due to an excessive absorption increase or if a phase is missing. Refer to the table in wiring diagram 6 od Appendix A for the calibration. •...

  • Page 20: 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 21: 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 and turn the switch of Fig. 26 to position “1”. Make sure that the lights or testers connected to the solenoids, or the pilot lights on the solenoids them- selves, indicate that no voltage is present.
  • Page 22 Start-up, calibration and operation of the burner Maximum gas pressure switch Adjust the maximum gas pressure switch after having performed all other burner adjustments with the maximum gas pressure switch set to the end of the scale (Fig. 28). With the burner operating at maximum output, lower adjustment pressure by slowly turning the relative knob anticlockwise until the burner locks out.

  • Page 23: Operator Panel With Lcd Display

    Start-up, calibration and operation of the burner Operator panel with LCD display Description of the symbols Lock-out lamp Lockout Flame presence Valve powered Ignition transformer powered Fan motor powered Pre-heater active only for burners of fuel oil Fig. 31 Request for heat D8268 Parameters mode active Key to units of measurement...

  • Page 24: Visualisation And Programming Modes

    Start-up, calibration and operation of the burner Visualisation and programming modes The operator panel, and especially the display visualisation, has 4 working modes:  Normal mode  Info mode (InFo)  Service mode (Ser)  Parameters mode (PArA) The information for accessing and operating at the various levels is given below. Normal mode Visualises the operation conditions and allows you to modify the operation point of the burner manually.
  • Page 25 Start-up, calibration and operation of the burner m³ m³/h The display visualises alternately an error code and a diagnostic, which does not take the sys- tem into safety mode. m³ m³/h Reset procedure The burner is in lockout when the red indicator light on the operator panel is m³...
  • Page 26 Start-up, calibration and operation of the burner From Normal mode, using the keys of the operator panel, it is possible to activate one of the three visualisation/programming modes: Info mode (InFo) Visualisation modes Service mode (Ser) Service mode (Ser) Programming modes Info mode Service mode Visualises the general system information.
  • Page 27 Start-up, calibration and operation of the burner Parameters mode Displays and allows you to modify/program the complete list of To access this level, refer to “Access procedure with password”. parameters, see Chap. 5.18. Once the access procedure has been carried out, the display will The factory-set parameters are not visible.
  • Page 28 Start-up, calibration and operation of the burner Parameter modification procedure Procedure for inserting and adjusting points on the modulation curve Nine adjustment/calibration points (P1 ÷ P9) can be inserted in After accessing the level the control box for each servomotor, varying their position by de- and group of parameters, grees and, consequently, the quantity of air and fuel introduced.

  • Page 29: Operation Sequence Of The Burner

    Start-up, calibration and operation of the burner Operation sequence of the burner Signal ON Operation Signal OFF Start-up Switching off Checking of Any signal is allowed seal TSA1 Number of the phase Thermostat/pressure switch safety TS Thermostat/pressure switch indicator TL Ionisation probe ION Air pressure switch PA Minimum gas pressure switch PGmin...

  • Page 30: Start-Up Procedure

    Start-up, calibration and operation of the burner Start-up procedure Check that the display of the Operator Panel shows request for heat and “OFF Upr”: this means it is necessary to set the modulation curve of the burner. m³ m³/h Access the Parameters level referring to “Access procedure with password”. The display visualises the parameters group 400;...
  • Page 31 “546” and “545” according to “Parameter modification procedure”. Press simultaneously the keys “+” and “-” (esc) twice: the display will visualise the current load position. Factory settings Burner Point of the curve RS 50/E MZ 21° 30° 90° 90° 20005963...

  • Page 32: Calc Function

    Start-up, calibration and operation of the burner CALC function D7908 D7909 Original curve CALC+ CALC- Recalculation Point of the curve Fig. 33 Point of the curve Fig. 34 The diagram of Fig. 33 shows how the fuel modulation curve is The diagram of Fig.

  • Page 33: Steady State Operation

    Start-up, calibration and operation of the burner 5.11 Steady state operation Carefully check the polarities! Burner without modulating operation kit Once the start-up cycle is completed, the servomotor command moves on to the thermostat/pressure switch TR that controls the pressure or the temperature in the boiler. ...

  • Page 34: List Of Parameters

    Start-up, calibration and operation of the burner 5.18 List of parameters Parameter Values interval Number of Unit of Degree of Predefined Access Modification elements measurement precision setting mode Description Min. Max. par. General parameters Control box identification date Reading only Info mode Control box identification number Reading only...
  • Page 35 Start-up, calibration and operation of the burner Parameter Values interval Number of Unit of Degree of Predefined Access Modification elements measurement precision setting mode Description Min. Max. par. Service Total number of errors Reading only 65535 Mode Hours of operation (that can be reset) Reset 999999h Info mode...
  • Page 36 Start-up, calibration and operation of the burner Gas: filling time (valve leak detection) Modification 0.2s 0.2s Parameter Mode Parameter Values interval Number of Unit of Degree of Predefined Access Modification elements measurement precision setting mode Description Min. Max. par. Gas: pressure test time (valve leak detection) Modification 0.2s 0.2s...
  • Page 37 Start-up, calibration and operation of the burner Error chronology: 701-725.06.Load Reading only 100% 0.1% Service Mode Parameter Values interval Number of Unit of Degree of Predefined Access Modification elements measurement precision setting mode Description Min. Max. par. Process information Current output Reading only 100% 0.1%...

  • Page 38: Faults - Probable Causes - Solutions

    Faults - Probable causes - Solutions If faults arise in ignition or operations, the burner performs a "safety stop", which is signalled by the red burner lockout LED. The display visualises alternately the lockout code and the relative diagnostic. To reset the start-up conditions, refer to “Reset procedure”. When the burner starts up again, the red LED goes out. List of error codes Error Diagnostics...
  • Page 39 Faults - Probable causes - Solutions Error Diagnostics Meaning of the system REC27.100A2 Recommended measures code code Reference error of a servomotor The reference of the fuel servomotor was not successful. Bit 0 It was not possible to reach the reference point. Reference error of the fuel servomotor Valence 1 1.
  • Page 40 Faults - Probable causes - Solutions Error Diagnostics Meaning of the system REC27.100A2 Recommended measures code code Relay supervision error 2 – Safety valve 3 Ignition transformer The relay does not start up Carry out a reset; if the error arises repeatedly, replace the unit 4 Fuel valve 1 5 Fuel valve 2 6 Fuel valve 3...
  • Page 41 Faults - Probable causes - Solutions Error Diagnostics Meaning of the system REC27.100A2 Recommended measures code code Internal error – backup / restoration Restoration – OK, but backup < compared with set data of Restoration successful, but the backup data installed are fewer than those currently present in current system the system.

  • Page 42: Maintenance

    Maintenance Notes on safety for the maintenance The periodic maintenance is essential for the good operation, Before carrying out any maintenance, cleaning or checking oper- safety, yield and duration of the burner. ations: It allows you to reduce consumption and polluting emissions and disconnect the electricity supply from the burner by to keep the product in a reliable state over time.

  • Page 43: Opening The Burner

    Maintenance Opening the burner Closing the burner  Disconnect the electrical supply from the burner.  Remove the split pin 9)(Fig. 38) and push the burner until it is  Loosen the screw 1) and remove the hood 2). approx. 100 mm from the pipe coupling. ...

  • Page 44: A Appendix - Electrical Panel Layout

    Appendix - Electrical panel layout Index of layouts Indication of references Functional layout REC27... Functional layout REC27... Functional layout REC27... Electrical wiring that the installer is responsible for Electrical wiring kit Electrical wiring Kit RWF40... external Indication of references /1.A1 Sheet no.
  • Page 45 Appendix - Electrical panel layout 20005963...
  • Page 46 Appendix - Electrical panel layout 20005963...
  • Page 47 Appendix - Electrical panel layout 20005963...
  • Page 48 Appendix - Electrical panel layout 20005963...
  • Page 49 Appendix - Electrical panel layout 20005963...
  • Page 50 Appendix - Electrical panel layout 20005963...

  • Page 51: B Appendix - Accessories (On Request)

    125/285 ÷ 630 kW Long head kit Head length Standard head Burner Kit code obtained with the length RS 50/E MZ 20008182 216 mm 351 mm Software interface kit (ACS410 + OCI410.30) - Service Level Burner Kit Code RS 50/E MZ...
  • Page 52 Appendix - Accessories (on request) Continuous purging kit Burner Kit Code RS 50/E MZ 3010094 Differential switch kit Burner Kit Code RS 50/E MZ 3010465 Maximum gas pressure switch kit Burner Kit Code RS 50/E MZ 3010466 Post-purging function Note A specific kit does not exist, because the post-purging function is obtained by modifying parameter 234;...

  • Page 53: C Appendix - Gas Supply Pressure

    Appendix - Gas supply pressure The table show minimum load losses along the gas supply line depending on the maximum burner output operation. p (mbar) p (mbar) p (mbar) MB-DLE 410 MB-DLE 412 MB-DLE 415 MB-DLE 420 MBC-1200-SE (Rp 1” 1/4) (Rp 1”...

  • Page 54: D Appendix - Firing Rate On Basis Of Air Density

    Appendix - Firing rate on basis of air density The firing rate of the burner shown in the manual is valid for an If H3 is greater than H1, as in Fig. 40, the burner can produce ambient temperature of 20°C and an altitude of 0 m above sea the delivery requested.
  • Page 55 NOTE ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
  • Page 56 RIELLO S.p.A. I - 37045 Legnago (VR) Tel.: +39.0442.630111 http:// www.riello.it http:// www.rielloburners.com Subject to modifications...

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