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CIB UNIGAS RX2050 Manual

Gas burners
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RX2050
Gas burners
Microprocessor controlled
LMV 5x
Including FGR version
ИНСТРУКЦИЯ ПО МОНТАЖУ - ЭКСПЛУАТАЦИИ - ОБСЛУЖИВАНИЮ
BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ
M039676CA 0.1 06/2023

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Summary of Contents for CIB UNIGAS RX2050

  • Page 1 RX2050 Gas burners Microprocessor controlled LMV 5x Including FGR version ИНСТРУКЦИЯ ПО МОНТАЖУ - ЭКСПЛУАТАЦИИ - ОБСЛУЖИВАНИЮ BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039676CA 0.1 06/2023...

  • Page 2: Risk Analysis

    DANGERS, WARNINGS AND NOTES OF CAUTION - Faults in the fuel supply system; - Use of the burner even after an error and/or fault has occurred; - Repairs and/or overhauls incorrectly carried out; This manual is supplied as an integral and essential part of - Modification of the combustion chamber with inserts that prevent the the product and must be delivered to the user.
  • Page 3 GENERAL INSTRUCTIONS DEPENDING ON FUEL USED those parts likely to constitute sources of danger shall be made harm- less. ELECTRICAL CONNECTION In case the equipment is to be sold or transferred to another user, or in  For safety reasons the unit must be efficiently earthed and installed as ...

  • Page 4: Symbols Used

    BURER DATA PLATE .Do not touch any mechanical moving parts with your hands Consump or any other part of your body. Injury hazard Do not touch any parts containing fuel (i.e. tank and pipes). Type For the following information, please refer to Scalding hazard Model the data plate:...
  • Page 5 PART I: SPECIFICATIONS PART I: SPECIFICATIONS Note: the figure is indicative only Speed Sensor Control panel with startup switch Electrical panel Combustion head adjusting screw Cover Blast tube + Combustion head Flange FGR, flue gas recirculation (only for FGR type burners) Ignitor gas train 10 Actuator 11 Air pressure switch...

  • Page 6: Burner Model Identification

    ATTENTION! The corrective factors in the above table depend on the gas composition, so on the calorifc value and the density of the gas. The above value can be taken only as reference. Technical Specifications BURNER TYPE RX2050 M-.. RX2050 (.FGR) M-.. Output min.- max kW 2500 - 15200 2500 - 12160...
  • Page 7 PART I: SPECIFICATIONS Note2: Maximum gas pressure = 360 mbar (with Dungs MBDLE) = 500 mbar (with Siemens VGD or Dungs MultiBloc MBE) Minimum gas pressure = see gas curves. Note3: Burners are suitable only for indoor operation with a maximum relative humidity of 80 % Note4: with electrode: for safety reasons the burner must stop automatically every 24 hours Gas categories and countries of application...
  • Page 8 Overall dimensions (mm) RX2050 M-.MD.S.RU.A.8.80.EG 1064 1693 1192 2032 2195 45° 30 335 335 30 N°8 FGR flange burner flange boiler recommended drilling template...
  • Page 9 Overall dimensions (mm) RX2050 M-.MD.S.RU.A.8.80.EI Ø 1476 1064 1603 1698 2401 2298 burner flange boiler recommended drilling template...
  • Page 10 PART I: SPECIFICATIONS GAS TRAIN CONNECTION ATTENTION: Before executing the connections to the gas pipe network, be sure that the manual cutoff valves are closed. The following diagrams show some examples of possible gas trains with the components supplied with the burner and those fitted by the installer.

  • Page 11: Performance Curves

    Performance curve minimum Pressure in the Network / gas flow rate curves (natural gas) RX2050 M-.. RX2050-FGR M-.. Caution: the gas rate value is quoted on the x-axis, the related network pressure is quoted on the y-axis (pressure value in the combustion chamber is not included).
  • Page 12 PART I: SPECIFICATIONS Gas pressure burner head vs natural gas flow rate Curves are referred to pressure = 0 mbar in the combustion chamber! RX2050 M-.. RX2050-FGR M-..
  • Page 13 PART I: SPECIFICATIONS How to read the burner “Performance curve” To check if the burner is suitable for the boiler to which it must be install- Campo di lavoro bruciatori led, the following parameters are needed: Tipo P60 Mod. M-xx.x.IT.A.0.50 - M-.xx.x.IT.A.0.65 furnace input, in kW or kcal/h (kW = kcal/h/860);...
  • Page 14 PART II: INSTALLATION PART II: INSTALLATION MOUNTING AND CONNECTING THE BURNER Transport and storage If the product must be stored, avoid humid and corrosive places. Observe the temperatures stated in the burner data table at the begin- ning of this manual. The packages containing the burners must be locked inside the means of transport in such a way as to guarantee the absence of dangerous movements and avoid any possible damage.
  • Page 15 PART II: INSTALLATION Fitting the burner to the boiler To perform the installation, proceed as follows: drill the furnace plateas decribed in paragraph (“Overall dimensions”); place the burner towards the furnace plate: lift and move the burner by means of its eyebolts placed on the top side (see”Lifting and moving the burner”);...
  • Page 16 PART II: INSTALLATION Sizing of the FGR pipe (FGR burners only) ATTENTION! Performance curve is obtained in a plant designed according to the following guidelines, size the FGR pipe as per the example below. 1111 Keys 4 Bellow unit (a counter-flange supplied 7 Stack 1 Stainless steel FGR pipe, insulated loose is to be welded to the FGR duct)
  • Page 17 PART II: INSTALLATION GAS TRAIN CONNECTIONS WARNING: before executing the connections to the gas pipe network, be sure that the manual cutoff valves are closed. ATTENTION: it is recommended to mount filter and gas valves to avoid that extraneous material drops inside the valves, during maintenance and cleaning operation of the filters (both the filters outside the valves group and the ones built-in the gas valves).

  • Page 18: Mounting Positions

    PART II: INSTALLATION MultiBloc MB-DLE - Assembling the gas train Mounting Mount flange onto tube lines: use appropriate sealing agent Insert MB-DLE: note position of O rings Remove MultiBloc between the threaded flanges After installation, perform leakage and functional test Disassembly in reverse order MB-DLE 405..
  • Page 19 PART II: INSTALLATION DUNGS MBE Components and position of pressure switches PGMIN minimum gas pressure switch VD-V VD-R PGMIN minimum gas pressure switch (alternative VD-V VD-R to 1) PGCP leakage control gas pressure switch PGMAX maximum gas pressure switch Actuator with integrated pressure stabiliser On-Off actuator Valve body (Threaded) Valve body (Flange)
  • Page 20 PART II: INSTALLATION Siemens VGD20.. e VGD40.. Components and position of pressure switches PGMIN minimum gas pressure switch SKP25 SKP25 PGMIN minimum gas pressure switch (alternative SKP15 SKP15 to 1) PGCP leakage control gas pressure switch PGMAX maximum gas pressure switch Actuator with integrated pressure stabiliser On-Off actuator Valve body (Threaded)
  • Page 21 PART II: INSTALLATION Siemens VGD Pressure taps Strainer (G 1/4") (G 1/8") (G 1/4") (G 1/8") (G 1/4") (G 3/4") (G 1/8") Legend pi Inlet pressure pm Pressure between valves po Outlet pressure The pilot gas train is already installed to the burner, the following connections must be executed: connection from the stabiliser with filter to the gas supply network ...
  • Page 22 PART II: INSTALLATION Gas Filter (if provided) The gas filters remove the dust particles that are present in the gas, and prevent the elements at risk (e.g.: burner valves, counters and regulators) from becoming rapidly blocked. The filter is normally installed upstream from all the control and on-off devices. ATTENTION: it is reccomended to install the filter with gas flow parallel to the floor in order to prevent dust fall on the safety valve during maintenance operation.
  • Page 23 PART II: INSTALLATION BURNERS WITH INVERTER VARIANT (if provided) DANFOSS FC101 INVEOR M DANFOSS FC102 The manufacturer provides: KOSTAL: on-board or wall-mounted (in the latter case the kit is required) DANFOSS: wall-mounted Both can be equipped with a braking resistor. The burner terminal box is prepared to receive certain signals (for connection to the inverter, see the dedicated connection diagram).

  • Page 24: Electrical Connections

    PART II: INSTALLATION ELECTRICAL CONNECTIONS WARNING! Respect the basic safety rules. make sure of the connection to the earthing system. do not reverse the phase and neutral connections. fit a differential thermal magnet switch adequate for connection to the mains. WARNING! before executing the electrical connections, pay attention to turn the plant’s switch to OFF and be sure that the burner’s main switch is in 0 position (OFF) too.
  • Page 25 PART III: OPERATION PART III: OPERATION IN THE EVENT OF A BLOCKAGE, THE CAUSE MUST BE ASSESSED. IF THE FLAME BACKFIRE WARNING LIGHT IS ON, IT IS IMPERATIVE TO CHECK THE INTEGRITY AND GOOD CONDITION OF THE COMBUSTION HEAD AS DESCRIBED IN THE MAINTENANCE SECTION BEFORE UNLOCKING THE APPLIANCE.

  • Page 26: Gas Operation

    PART III: OPERATION Fig. 4 - Burner control panel B2 B3 G2 G4 KeysS1Main switch (0=Off, 1=GAS, 2=OIL) Reset pushbutton for control box CMF switch (0=stop, 1=low flame, 2=high flame, 3=automatic) - fully modulating burners only Gas proving system reset pushbutton (only for burners with Siemens LDU11 provided) Lock-out LED Hi-flame operation LED Lo-flame operation LED...
  • Page 27 PART III: OPERATION Integrated proving system (burners equipped with LME7x, LMV, LDU) This paragraph describes the integrated proving system operation sequence: At the beginning both the valves (EV1 and EV2) must be closed.  Test space evacuating: EV2 valve (burner side) opens and keep this position for a preset time ...

  • Page 28: Adjusting Procedure

    PART III: OPERATION Check the flow rate measuring it on the counter or, if it was not possible, verifying the combustion head pressure by means of a dif-  ferential pressure gauge, as described on par. “Measuring the gas pressure in the combustion head”. Then, adjust the combustion values by setting the “gas/air”...

  • Page 29: Fault History

    PART III: OPERATION NOTE: the C and A, on the . Once the ignition cycle ends, the main page is shown: Setpoint 80°C Act.value 78°C Load Flame Main page Set point: temperature set-point Act value: actual temperature value Load: load percentage (burner output) Flame: percentage of flame detection current.
  • Page 30 PART III: OPERATION 1 Class: 05Gas code Phase: Diag.: Lod: Start No. alternating by an error message as: O2 control and limiter automat deactivated To see the other Fault History pages, press the arrow keys. To exit the Fault History pages, press ESC. Lockout History To visualise the Lockout History, choose the related item and press ENTER.
  • Page 31 PART III: OPERATION BurnerControl RatioControl O2Contr./Guard. LoadController Choose “LoadController” and press ENTER: the following menu is shown: ControllerParam Configuration Adaption SW Version Choose “ControllerParam” and press ENTER: the following menu is shown: ContrlParamList MinActuatorStep SW_FilterTmeCon SetPointW1 Choose “SetPointW1” and press ENTER: SetpointW1 Curr: 90°...
  • Page 32 PART III: OPERATION if needed, by means of the arrow keys; press ENTER to confirm and the press ESC to exit. Press only ESC to exit without changing. Now choose SD_ModOff always scrolling down theLoad Controller menu, by menas of the arrow keys, and press ENTER. SetpointW1 SetpointW2 SD_ModOn...

  • Page 33: System Lockout

    PART III: OPERATION choose the desired language and cofirm by pressing ENTER; press ESC to exit. DateFormat: it allows setting the date format as DD-MM-YY (day-month-year) or MM-DD-YY (month-day-year) DateFormat Curr:: DD-MM-YY New: MM-DD-YY choose the desired format and cofirm by pressing ENTER; press ESC to exit. PhysicalUnits: it allows setting the measuring units for temperature and pressure UnitTemperature UnitPressure...
  • Page 34 PART III: OPERATION SetLoad Autom/Manual/Off SetLoad: to set the required load percentage SetLoad Curr:: 0.0% New: 20.0% set the required percentage and confirm by pressing ENTER; press ESC to exit. choose “Autom/Manual/Off SetLoad Autom/Manual/Off Autom/Manual/Off Curr:: Automatic New: Burner On three modes are provided: Automatic: automatic operation Burner on: manual operation...
  • Page 35 PART III: OPERATION ADJUSTING THE GAS VALVES GROUP Multibloc MB-DLE The multibloc unit is a compact unit consisting of two valves, gas pressure switch, pressure stabilizer and gas filter. C VS The valve is adjusted by means of the RP regulator after slackening the locking screw VB by a number of turns.
  • Page 36 PART III: OPERATION Calibration air and gas pressure switches The air pressure switch locks the control box if the air pressure is not the one requested. If it happens, unlock the burner by means of the control box unlock pushbutton, placed on the bur- ner control panel.
  • Page 37 PART III: OPERATION Adjusting the combustion head Attention! if it is necessary to change the head position, repeat the air and fuel adjustments described above. Adjustment procedure for light oil operation The light oil flow rate can be adjusted choosing a nozzle that suits the boiler/utilisation output and setting the delivery and return pres- sure values according to the ones quoted on the following charts.жидкого...

  • Page 38: Routine Maintenance

    PART IV: MAINTENANCE PART IV: MAINTENANCE At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is recommended to carry out the maintenance at the end of each heating season; in the case of continuous operation the maintenance is carried out every 6 months.
  • Page 39 PART IV: MAINTENANCE Gas filter maintenance WARNING: Before opening the filter, close the manual cutoff valve downstream the filter and bleed the gas; check that inside the filter there is no pressurised gas. Per pulire o sostituire il filtro gas procedere nel modo seguente: MB-DLE MB-DLE 415 - 420 B01...
  • Page 40 PART IV: MAINTENANCE MultiBloc VD-V VD-R Mounting to push position 1. Position VD on VB, fig. 2+3. 2. Slide VD forward up to the stop, fig. 4. 3. Screw VD on with 2 M5 screws for each, max. 5 Nm/44 in.-lb., fig. 5/6. 4.
  • Page 41 PART IV: MAINTENANCE Removing the combustion head Attention: before adjusting the combustion head, turn the burner off and wait until it gets cold. Remove the cover C.  remove the electrodes cables;  unscrew the 3 screws V which hold in position the gas manifold G and pull out the complete group as shown in the picture below. ...

  • Page 42: Seasonal Stop

    PART IV: MAINTENANCE Replacing the ignition electrode To replace the ignition electrode, proceed as follows: Remove the burner cover Disconnect the electrode (E) cable (CE) Remove the combustion head (see par. “Removing the combustion head”) Loose screw (B) that fasten the ignition electrode (E) to the burner pilot (P) Remove the electrode and replace it, referring to the values quoted on figure ATTENTION: avoid the electrode to get in touch with metallic parts (blast tube, head, etc.), otherwise the boiler operation would be compromised.
  • Page 43 PART IV: MAINTENANCE TROUBLESHOOTING GUIDE Gas operation * No electric power supply * Restore power supply * Main switch open * Close switch * Thermostats open * Check set points and thermostat connections * Bad thermostat set point or broken thermostat * Reset or replace the thermostat * No gas pressure * Restore gas pressure...
  • Page 44 C.I.B.UNIGAS S.p.A. Via L.Galvani ,9 - 35011Campodarsego (PD) - ITALY Tel. +39 049 9200944 - Fax +39 049 9200945 website:www.cibunigas.it-e-mail:cibunigas@cibunigas.it Note: specifications and data subject to change. Errors and omissions excepted.
  • Page 45 Siemens LMV5x Service Manual M12920CC rev 2.1 08/2017...
  • Page 46 Warnings: To avoid injury to persons, damage to property or the environment, the following warning notes must be observed Qualified personal In the sense of this documentation, qualified personal are those who are knowledgeable and qualified to install, mount, commission, operate and service / maintain LMV5 system together with burner &...
  • Page 47     WIRING RECOMMENDATIONS ....................................... 4     Earthing ......................................4     1.1.1 TN earthing system ................................4     1.1.2 Protective Earth (PE) and Functional Earth (FE) ........................4     .Frequency inverter / Variable Speed Drive (VSD) ......................... 5  ...

  • Page 48: Wiring Recommendations

    1 WIRING RECOMMENDATIONS Earthing 1.1.1 TN earthing system For the LMV5x-System it is preconditioned that a TN earthing system is used. In a TN earthing system, one of the points in the generator or transformer is connected with earth, usually the star point in a three-phase system. TN−S: PE and N are separate conductors that are connected together only near the power source.
  • Page 49 .Frequency inverter / Variable Speed Drive (VSD) A VSD is one of the strongest EMC sources in a boiler house, so the following is recommended: LMV5 hi ld Earth Note: If the LMV5 is mounted in a cabinet, alternative to (X73.6 / FE), also a connection with the PE- rail in the cabinet is possible Use only VSD with EMC- filter!
  • Page 50 1.3.1 Recommendations It is recommended to use a metal "mounting plate" for the LMV5 Base Unit and the Transformer AGG5.220. Use this plate to provide the Functional Earth (FE), see also /EARTH connection example The connection of the FE to the LMV5 has to be made by connecting the X52.4 terminal with FE! Follow exactly the shield and earth connection in the wiring diagram In some cases connecting the terminal X52.2 with FE results in an improved EMC- immunity of the LMV5.
  • Page 51 Wireway and electrical conduit The following cables are recommended for separate wiring; Complete separate from all other cables: • Cable for "VSD to Fan motor" Line voltage, see also "1. Frequency inverter / Variable Speed Drive (VSD)" • Cable for ignition high voltage, see also "2. Ignition" •...
  • Page 53 1.4.1 Servomotor wiring example 1.4.2 Bus cable wiring on LMV5x and AZL doors. 1.4.3 EARTH connection example...
  • Page 54 2 AZL display/programming unit Users can set only the LMV parameters that can be accessed without password: (see “Adjusting the temperature set-point”). The Siemens AZL User Interface allows programming the Siemens LMV control box and monitoring the system data. The user interface is made of: display: it shows menus and parameters key (previous level): it goes back to the previous level menu or exits the programming mode without changing...
  • Page 55 LMV5x program operating phases Phase number Description Sequence Home run Stand by 20,21 Waiting to start realase Startup Start fan on Startup Driving to pre-purge Startup 30..34 Pre purging Startup Driving to ignition pos Startup Ingnition pos Startup 40,42,44 Fuel release 1 Startup 50,52 Fuel release 2...
  • Page 56 LMV5x program structure...
  • Page 57 NOTE: (1) only for LMV52.400, LMV51.300 without temperature compensation (2) only for LMV5.200 (controlling the oxygen level in the exhaust gas flue) and LMV52.400 (monitoring the oxygen level in the exhaust gas flue, a lock out occur if a limit value is overcoming) (3) Only for LMV51.300 (in this case VSD cannot be used), LMV52.xxx ATTENTION: LMV51.300: HAS ONE AUX.

  • Page 58: Changing Password

    Password 2.4.1 Access to service levels by password Depending on password (service or OEM), different parameters are visible. "Service" parameters, as per the actuator curves and the set-point values, are password protected. The operator must logon using the "9876" password. "User"...
  • Page 59 3 Thermostatic series and safety loop The burner shuts down properly when the thermostatic series (X5-03.1 and X5-03.4 - terminals 3 and 4 of the burner terminal block) opens. In this way, before shut-down, the burner drives to the minimum load, then the fuel valve will close. The post-purging phase will be performed if set. By re-closing the thermostatic series, the burner will start-up again.
  • Page 60 4 Actuators Addressing the actuators The addressing assigns to each actuator its proper function. The addressing is factory set by the burner manufacturer. If an actuator must be replaced, it is necessary to address it, otherwise the system will not work. The parameter that sets the actuator function is protected by the Service level password.
  • Page 61 Actuator doors configuration After the adressing of the actuators, it is necessary to activate and to configure the operation way for each servomotor. ATTENTION: Activate only the actuators that are really present, otherwise an error will occur. 1st level 2nd level 3rd level 4th level Possible choices...
  • Page 62 5 Setting the load controller Door X60 is used for IntLC... choice and a temperature modulationg probe is used. ATTENTION: in case of FGR, it is not possible to connect a modulating temperature probe at the X60 door of the LMX5...
  • Page 63 ExtLC X5-03 = three-point external controller (X5-03 terminals) Int LC = internal controller (LMV5x) (it switches between 2 set points, W1,W2 set thought AZL. the switch from W1 and W2 is realized opening/closing the LMV5x... terminals X62.1, X62.2). Int LC Bus = internal controller and set point setting via bus connection Int LC X62 = internal controller (LMV), but set point is externally controlled by means of a voltage/current signal on X62 terminals Ext LC X62 = external controller, the burner output is controlled by means of a voltage/current signal on X62 terminals Ext LC Bus = external controller, the burner output is controlled via bus...
  • Page 64 Configuration of a pressure or a temperature probe type at X61 door ATTENTION: If the external load controller is set do not connected to terminals X60 or X61. If a modulation probe is connected to the X61 terminal, proceeding as follows: 1st level 2nd level 3rd level...
  • Page 65 Setting the setpoint and the burner and the PID operative band. 6.4.1 Set-point To set the temperature set-point value, that is the generator operating temperature; proceed as follows. 1st level 2nd level 3rd level 4th level 5th level 6th level Description Params &...

  • Page 66: Pid Control Parameters

    The default value for this parameter is10% that is, the burner will turn off at a temperature 1% higher than the set-point. Press the ENTER to confirm, the press ESC to exit. Otherwise press ESC to exit without changing data. Press the ESC to exit 6.4.3 PID control parameters The controller’s memory contains 5 standard parameter sets.
  • Page 67 Setting functions “TL_ThreshOff” and “TL_SD_On” These functions enable the settable threshold for the immediate shutdown, if value set on TL_ThreshOff is exceeded. The automatic restart is performed for values lower than the one set on TL_SD_On. On display, values detected by temperature/pressure probe are shown at the same time. TL_ThreshOff turns the burner off if temperature exceeds the set value.
  • Page 68 7 VSD Standardization Motor standardization (speed acquisition) allows the LMV unit to control the motor rounds at the maximum frequency signal coming from the VSD. A temporary standardization is factory set only for test purpose. The definite standardization must be performed on site by the Service Center (only if the fan is supplied), before the plant test.
  • Page 69 8 SPECIAL POSITIONS Ignition position The ignition point is independent from the other curve points of the air/fuel ratio curve. As far as dual fuel burners, the ignition point set for the gas operation does not depend on the one set for the oil operation. LMV5x allow two different ignition position for gas mode and oil mode.
  • Page 70 9 ADJUSTING THE AIR/FUEL RATIO CURVES ATTENTION: when burners are provided with VSD, before setting the air/fuel ratio curves, the Standardization of the motor speed must be performed (see chapter “Standardization”). 1st level 2nd level 3rd level 4th level 5th level 6th level Description Params &...
  • Page 71 Setting the load points output (burners with no FGR) Following the below route access to the programming levels of the menu 1st level 2nd level 3rd level 4th level 5th level 6th level Description Params & Display RatioControl Parameter settings for fuel/ air ratio control GasSettings Parameter settings for firing...
  • Page 72 Point Load To choose the actuator to set, press the “left arrow” and choose Air or VSD Fuel Point Load Press "Enter" to access the Air actuator value to be set. Fuel Point Load Press keys to change value. Fuel Point Load Press Enter...
  • Page 73 Caution! In case it is necessary to immediately shut the burner down while working at high flame and the maximum load point is not already set observing the combustion parameters, decrease gas by means of the pressure governor as to drive the burner to a sufficient excess of air, then shut the burner down by the main switch.
  • Page 74 10 Configurations for burner with FGR 10.1 Recommendations Note! Reduction of maximum burner output Use of the flue gas recirculation (FGR) function or the flue gas mass introduced to the supply air duct might lower the burner’s maximum output. This means that the maximum amount of combustion air that can be introduced will be reduced. It is recommended to consider a proper air excess during the regulation of the burner in order to have to the right O2 content in the smoke, after the flue gas recirculation.
  • Page 75 10.2 Address and activate the AUX3 servomotor. Usually these operations are already set in the manufacturer factory. They would be necessary in same cases as: the substitution of the servomotor, in case the FGR mode were not activated yet or the LMV5x were be supplied loose…...
  • Page 76 10.3 Setting the special positions 1st level 2nd level 3rd level 4th level 5th level 6th level Description Param & Display RatioControl GasSettings OilSettings SpecialPosition Suggested positions are below. They can be modify during the commissioning according to right needs. Special Position: AUX3 POS •...
  • Page 77 10.5 FGR mode choice 1st level 2nd level 3rd level 4th level 5th level 6th level Description Param & Display Flue Gas Recirc According to the preference and FGR-Mode AUX3onCurve instruction in the table below. time temperature temp. contr. TCautoDeact deactMinpos auto deact Description of the FGR mode.
  • Page 78 10.6 Main parameter of the FGR function LMV50 LMV52.4.. Parameter Description LMV51.3 LMV52.2 DelaytimeFGR Gas Setting of delay time for auxiliary actuator 3 to be kept in the ignition position after entering phase ● ● OPERATION DelaytimeFGR Oil ThresholdFGR Gas Setting of temperature that must not be exceeded so that auxiliary actuator 3 can be kept in the ●...
  • Page 79 10.7 Example of FGR factor and FGR Maps Factor on the burner regulation. We consider to set the AUX3 for FGR with the “temp.contr.” Mode The curve is as per the below table. Point Note Load % 37,5 % 62,5 % 75 % 100 % AUX3 FGR Curve...
  • Page 80 11 Cold start thermal shock (CSTP) If there is a steam boiler or a boiler that must start up cold in the plant and to avoid thermal shocks a slow heating is required for the boiler by maintaining the burner at the minimum output, the automatic function “Cold start thermal shock” can be performed instead of the manual operation at minimum load. The CSTP (Cold Start Thermal Schock) function can be enabled by the Technical service only (access by reserved password).
  • Page 81 Note: by enabling the manual operation (this function can be set at user level also -see chapter “manual operation”) the CSTP function is momentary excluded, when enabling the automatic operation again, the CSTP function (previously set at Service level) will be enabled as well.
  • Page 82 12 BURNER MANUAL OPERATION The operator can decide if choosing burner manual operation at a settable fixed load or modulating operation through the automatic load controller, then can also set the burner shutdown by means of the “burner off” function. Choose the type of operation (Au-tom / Manual / Off).
  • Page 84 Terminal Description of connection termi- nals group Connection symbol Electrical rating PIN1 Fan motor contactor AC 230 V +10 % / -15 %, 50...60 Hz, 1 A, cos.0.4 PIN2 Alarm AC 230 V +10 % / -15 %, 50...60 X3-01 Hz, 1 A, cos.0.4 PIN1 Air pressure switch (LP)
  • Page 85 Terminal Connection symbol Description of connection terminals Electrical rating group PIN1 Protective earth (PE) Pressure switch min-oil (DWmin-oil) AC 230 V +10 % / -15 %, PIN2 50...60 Hz, Imax 1.5 mA X5-01 Power signal for pressure switch-min- AC 230 V +10 % / -15 %, oil (DWmin-oil) PIN3 50...60 Hz, Imax 500 mA...
  • Page 86 Terminal Connection symbol Description of connection termi- nals Electrical rating group PIN1 Protective earth (PE) PIN2 Neutral conductor (N) X7-01 PIN3 Fuel valve 2 (oil) AC 230 V +10 % / -15 %, 50...60 Hz, 1 A, cos.0.4 PIN1 Protective earth (PE) PIN2 Neutral conductor (N) AC 230 V +10 % / -15 %, 50...60...
  • Page 87 Terminal Connection symbol Description of connection termi- nals Electrical rating group AC 230 V +10 % / -15 %, 50...60 PIN2 Firing on oil Hz, 1 A, cos.0.4 X8-01 PIN1 Firing on gas AC 230 V +10 % / -15 %, 50...60 Hz, 1 A, cos.0.4 PIN4 Protective earth (PE)
  • Page 88 Termi- nal group Connection symbol Description of connection termi- nals Electrical rating AC 230 V +10 % / -15 %, 50...60 Hz, PIN4 Neutral conductor (N) max 1 mA PIN3 Power signal transformer AC 12 V +10 % / -15 %, 50...60 Hz, X10-01 PIN2 AC power signal GO...
  • Page 89 (functional earth) PIN4 AC power supply from transformer to LMV5... system PIN3 AC 12 V +10 % / -15 %, 50...60 Hz PIN2 Reference ground (PELV) AC power supply from transformer to LMV5... system PIN1 AC 12 V +10 % / -15 %, 50...60 Hz Terminal Connection symbol Description of connection termi- nals...
  • Page 92 Note: Specifications and data subject to change. Errors and omissions excepted.
  • Page 93 COD. M07979CD rel. 3.2 01/13 RECOMMENDATIONS FOR LMV5x CONNECTIONS Connections affected by EMC noises are related to the bus cable (actuator line cable, PLL52), detection probe cable, speed sensor cable, 4-20mA signal cable that controls the VSD. Input and power cables (400V e 230V) must be laid separately from the signal cables. The bus cable between control panel and burner and between burner and PLL52 board (used when O2 trim control must be perfomed) must be laid separately and far from power cables.
  • Page 94 Annex1 – Example for motor cable...
  • Page 96 Annex 2 – Example for sensor cable...
  • Page 99 SIEMENS Appendix: Example for wiring, earthing and shielding the LMV5-System Cabinet Siemens MM440 CAN-Bus shielded cable X52.2 X52.4 "VSD - Fan Motor" Separate conduit & shielded line voltage cable! Separate plastic conduit X51, X50 Metal plate = FE for high voltage ign. cable X9-02 X10-01 Power...
  • Page 100 Addendum 4: LMV52... with O trim control and O module General The LMV52... system is an extended LMV51... system. A special feature of the LMV52… is control of the residual oxygen content to increase the boiler’s efficiency. In addition to the features of the LMV51..., the LMV52... provides O trim control, con- trol of a maximum of 6 actuators, control of a VSD, and acquisition of cumulated fuel consumption and current fuel throughput.
  • Page 101 The maximum cable length between transformer and CAN bus users is dependent on Determination of the the type of cable (cross-sectional area), the number of actuators and the type of actua- maximum cable length tor used (current). The following graphs can be used to determine the maximum CAN bus cable lengths between the transformer and group of actuators or the AZL5…, depending on the rele- vant influencing factors.

  • Page 103: Control Panel

    Example 2 LMV5... basic unit in the control panel, actuator on the burner; CAN bus cable «LMV5... → SA» > 20 m Jumper Control panel Burner ACT 1 ACT 2 ACT 3 ACT 4 Fixed internal bus termination SQM4... SQM4... SQM4...
  • Page 104 Example 3a Installation of all components in the burner; CAN bus cable «LMV52... ↔ SA» > 20 m with 6 actuators and O2 module PLL52... Jumper Fixed internal ACT 1 ACT 2 ACT 3 ACT 4 ACT 5 ACT 6 bus termination SQM45...
  • Page 105 Notes on example 3a / 3b CAN bus cable with LMV52... and more than 4 actuators and O2 module PLL52... On LMV52... applications with more than 4 actuators (SQM45...), a second transformer is required for powering the extra actuators. In that case, transformer 1 powers the LMV52... basic unit, the AZL5..., and the first 4 actuators.

  • Page 106: Inputs And Outputs

    O2 module In comparison with the LMV51... system, the extra components to be connected with the LMV52… system are the O module and the O sensor QGO... and, optionally, the combustion air and flue gas temperature sensors. The O module is to be connected to the basic unit via the CAN bus.
  • Page 108      8      8      8...
  • Page 109 ß ß ß...
  • Page 110 ©...
  • Page 111 Technical Data PLL52... LMV52... basic unit Refer to chapter Technical Data! Mains voltage «X89-01» AC 120 V AC 230 V PLL52... –15 % / +10 % -15 % / +10 % Safety class I with parts according to II as per DIN EN 60730-1 Mains frequency 50 / 60 Hz ±6 % Power consumption...
  • Page 112 PLL52... Flue gas temperature X86.3 Shield connection Temperature sensor X86.1 Pt / LG-Ni1000 PLL52... Pt / LG-Ni1000 X86.2 Signal reference X89-01.4 Protective earth (PE) Supply air temperature X89-01.5 Power supply neutral X87.3 conductor (L) Shield connection F 6.3AT Temperature sensor X87.1 X89-01.6 Power supply live Pt / LG-Ni1000...

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