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CIB UNIGAS N880X Instructions For Installation, Use And Maintenance Manual

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N880X
N925X
N1060X
Gas burners
Progressive - Fully Modulating
MANUAL OF INSTALLATION - USE - MAINTENANCE
BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ
M039713CA 0,0 02/2024

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Summary of Contents for CIB UNIGAS N880X

  • Page 1 N880X N925X N1060X Gas burners Progressive - Fully Modulating MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039713CA 0,0 02/2024...

  • Page 3: Risk Analysis

    DANGERS, WARNINGS AND NOTES OF CAUTION regular development of the structurally established flame; - Insufficient and inappropriate supervision and care of the burner compo- nents most subject to wear and tear; This manual is supplied as an integral and essential part of - Use of non-original components, whether spare parts, kits, accessories and optionals;...
  • Page 4 modifications will result in the annulment by the manufacturer of the gua- unless expressly required to do so; rantee that it supplies with the burner. - do not allow children or inexperienced persons to use equipment; The damages resulting from improper installation, use and failure to com- The unit input cable shall not be replaced by the user.

  • Page 5: Symbols Used

    DIRECTIVES AND STANDARDS SYMBOLS USED Gas burners Failure to observe the warning may result in irreparable damage (electrical or mecca- WARNING European directives nichal source respectively) to the unit or damage to the environment 2016/426/UE (appliances burning gaseous fuels) 2014/35/UE (Low Tension Directive) Failure to observe the warning may result 2014/30/UE (Electromagnetic compatibility Directive) DANGER!

  • Page 6: Table Of Contents

    Burner model identification - - - - - - - - - - - - - - - - - - - - - - - - - 8 Overall dimensions (mm) N880X, N925X, N1060X - - - - - - - 9 Pressure in the Network / gas flow rate curves - - - - - - - - - 11 Pressure in the Network / gas flow rate curves (L.P.G.) - - - 12...

  • Page 7: Part I: Specifications

    PART I: SPECIFICATIONS PART I: SPECIFICATIONS Control panel with startup switch Gas train Electrical panel Cover Blast tube + Combustion head Flange Silencer Actuator Air pressure switch 10 Combustion head adjusting ring nut Gas operation: the gas coming from the supply line passes through filter, gas valves and pressure regulator. This one forces the pres- sure in the utilisation limits.

  • Page 8: Burner Model Identification

    125 / DN125 GAS CONNECTION Burner performance N880X M-..N925X M-... N1060X M-... N880X L-..N925X L-... N1060X L-... Output min. - max. kW 1500 - 8800 1300 - 9250 1550 - 10600 1500 - 8800 1300 - 9250 1550 - 10600...

  • Page 9: Overall Dimensions (Mm) N880X, N925X, N1060X

    Overall dimensions (mm) N880X, N925X, N1060X BOILER RECOMMENDED DRILLING TEMPLATE (BS/BL) (AS/AL) BURNER FLANGE B*: SPECIAL blast tube lengths must be agreed with *DN = gas valves size TIPO (AS) (AL) (BS) (BL) N880X 1862 1962 384 826 117 445 545 648 1420 684 2000 1216 784 446 496 520 709 660 831 M16 651 460 460 922 204 718 1092 289 1161 399 330...

  • Page 10: Performance Curves

    PART I: SPECIFICATIONS Performance Curves N880X M - ..1.xx N925X M - ..1.xx N1060X M - ..1.xx Performance Curves N880A L - ..1.xx N925A L - ..1.xx N1060A L - ..1.xx...

  • Page 11: Pressure In The Network / Gas Flow Rate Curves

    PART I: SPECIFICATIONS Pressure in the Network / gas flow rate curves N880X M- N925X M- Gas rate Stm Gas rate Stm N1060X M- Gas rate Stm ATTENTION: 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: Pressure In The Network / Gas Flow Rate Curves (L.p.g.)

    PART I: SPECIFICATIONS Pressure in the Network / gas flow rate curves (L.P.G.) N880X L-..1.xx N925X L-..1.xx Gas rate Stm Gas rate Stm N1060X L-..1.xx Gas rate Stm Gas pressure burner head vs natural gas flow rate Curves are referred to pressure = 0 mbar in the combustion chamber! N880X M-..
  • Page 13 PART I: SPECIFICATIONS N880X L-.. N925X L-.. Gas rate Stm Gas rate Stm N1060X L-.. Gas rate Stm For more details see the following section "PART: Notes for the Installer".
  • Page 14 PART I: SPECIFICATIONS GAS TRAIN HYDRAULIC DIAGRAMS 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 15: How To Read The Burner "Performance Curve

    NOTES FOR THE INSTALLER NOTES FOR THE INSTALLER 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.

  • Page 16: Mounting And Connecting The Burner

    PART II: INSTALLATION PART II: INSTALLATION MOUNTING AND CONNECTING THE BURNER Packing The burners are despatched in wooden crates whose dimensions are: 2274 x 1690 x 1290 (L x P x H) Such packages fear moisture and are not suitable for stacking.Packing cases of this type are affected by humidity and are not suitable for stacking.

  • Page 17: Part Iii: Installation

    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 18: Gas Filter (If Provided)

    PART III: INSTALLATION GAS TRAIN CONNECTIONS PART III: INSTALLATION 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 19: Dungs Mbe

    PART III: INSTALLATION DUNGS MBE - Components and position of pressure switches DUNGS MBE.. VD-V VD-R Mounting positions VD-V VD-R On equipment versions Facile VD-R must be installed upstream valve PGMIN minimum gas pressure switch Actuator with integrated pressure stabiliser PGMIN minimum gas pressure switch (alternative to 1) On-Off actuator PGCP leakage control gas pressure switch...

  • Page 20: Siemens Vgd20.. E Vgd40

    PART III: INSTALLATION Siemens VGD20.. e VGD40.. Components and position of pressure switches SKP25 SKP25 SIEMENS VGD.. SKP15 SKP15 Mounting positions PGMIN minimum gas pressure switch Actuator with integrated pressure stabiliser PGMIN minimum gas pressure switch (alternative to 1) On-Off actuator PGCP leakage control gas pressure switch Valve body (Threaded) PGMAX maximum gas pressure switch...
  • Page 21 PART III: INSTALLATION Auxiliary-optional micro switch If the auxiliary microswitch (POC) is required, a dedicated actuator, different from the one usually supplied, must be ordered. The con- nection is shown in the figure. Version with SKP2 (built-in pressure stabilizer) AGA64 - Valve drivePlug connection ON-OFF AGA65 - End of strokePlug connection POC Valve Valve...

  • Page 22: Electrical Connections

    PART III: INSTALLATION ELECTRICAL CONNECTIONS Any cable connection or hook-up to the grid must be carried out by qualified, informed and trained personnel, directly coordinated and authorized by Technical Service. Always check in advance that the system electrical inter- lock is fitted with a safety circuit breaker. WARNING! It is forbidden to use the fuel pipes for the execution and/or completion of the grounding WARNING: It is possible that some components are still live despite being disconnected from the mains and can cause elec- tric shocks.
  • Page 23 PART III: INSTALLATION Note on electrical supplyIn the case where the power supply of the AUXILIARIES of the phase-phase burner (without a neutral), for the flame detection it is necessary to connect the RC circuit Siemens between the terminal 2 (terminal X3-04-4 in case of LMV2x, LMV3x, LMV5x, LME7x) of the base and the earth terminal, RC466890660.

  • Page 24: Limitations Of Use

    PART III: OPERATION PART III: OPERATION LIMITATIONS OF USE THE BURNER IS AN APPLIANCE DESIGNED AND CONSTRUCTED TO OPERATE ONLY AFTER BEING CORRECTLY CONNEC- TED TO A HEAT GENERATOR (E.G. BOILER, HOT AIR GENERATOR, FURNACE, ETC.), ANY OTHER USE IS TO BE CONSIDE- RED IMPROPER AND THEREFORE DANGEROUS.

  • Page 25: Gas Operation

    PART III: OPERATION Fig. 1 - Burner control panel Keys Main switch Reset pushbutton for control box CMF switch (0=stop, 1=low flame, 2=high flame, 3=automatic) - fully modulating burners only Lock-out LED Hi-flame operation LED Lo-flame operation LED B2 B3 “Ignition transformer operation”...

  • Page 26: Air Flow And Fuel Adjustment

    PART III: OPERATION AIR FLOW AND FUEL ADJUSTMENT DANGER! When adjusting the air/fuel ratio, it is mandatory to use a suitable flue gas analyser, calibrated and tested according to standard, to constantly check the correct air excess. Failure to comply with this recommendation can lead to serious danger.
  • Page 27 PART III: OPERATION 12 If necessary, adjust the combustion head position (see the dedicated paragraph).. Attention! if it is necessary to change the head position, repeat the air and gas adjustments described above. 13 The air and gas rate are now adjusted at the maximum power stage, go on with the point to point adjustement on the SV1 (gas side) adjusting cam as to reach the minimum output point.
  • Page 28 PART III: OPERATION Attention! if it is necessary to change the head position, repeat the air and gas adjustments described above. The air and gas rate are now adjusted at the maximum power stage, go on with the point to point adjustement on the SV1 (gas side) adjusting cam as to reach the minimum output point.
  • Page 29 PART III: OPERATION MultiBloc MBE Regulation VD-R whith PS Caution: check that the range of the installed spring is compatible with the gas pressure at the burner head (see appropriate diagram) to which must be added the back pressure and approx. 5 /10 mbar for various leaks and gas line. While making outlet pressure adjustments, do not exceed a value that creates a hazardous condition to the bur- ner! Outlet...

  • Page 30: Calibration Of Low Gas Pressure Switch

    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 31: Adjusting The Combustion Head

    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. Only if necessary, change the combusiton head position: to let the burner operate at a lower output, loose the VB screw and move pro- gressively back the combustion head towards the MIN position, by turning clockwise the VRT ring nut.

  • Page 32: Part Iv: 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 33: Gas Filter Maintenance

    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. To clean or remove the filter, proceed as follows: Remove the cap unscrewing the fixing screws (A);...

  • Page 34: Electrodes Adjustment

    PART IV: MAINTENANCE Electrodes Adjustment Important Note: Check the ignition and detection electrodes after removing/adjusting the combustion head. ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), other- wise the boiler’s operation would be compromised. Check the electrodes position after any intervention on the combustion head.

  • Page 35: Checking The Detection Current

    PART IV: MAINTENANCE Checking the detection current To check the detection signal follow the scheme in the picture below. If the signal is less than the value indicated, check the position of the detection electrode or detector, the electrical contacts and, if necessary, replace the electrode or the detector. Flame detection probe To clean/replace the detection photocell, proceed as follows: Disconnect the system from the electrical power supply.

  • Page 36: Troubleshooting Guide Gas Operation

    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 BURNER DOESN'T LIGHT Safety devices (manually operated safety thermostat, Restore safety devices;...
  • Page 40 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 41 LME73.000Ax + PME73.831AxBC LME73.831AxBC Service instruction manual M12921CB Rel.1.2 02/2016...

  • Page 42: General Features

    GENERAL FEATURES LME/ is suitable for gas, light and heavy oil burners LME7 series has two devices: LME73.000 (hardware) and PME73.831AxBC (programmable unit). The LME73.831AxBC is also available: it has a built in software and it isa not programmable. LME7 is inside the control panel. If supplied, PME73.831BC is inside the LME7; The display AZL23..

  • Page 43: User Interface

    User interface : Button A - Display preset output - In lockout position: Power value to the time of fault Info and Enter button - Reset in the event of fault, changeover visual diagnostic of the cause of fault (refer to chapter Diagnostics of cause of fault ) - button - Display flame signal current 2 or phases display - In lockout position: MMI phase to the time of fault...
  • Page 44 List of phase display on board LME : Phase number of Function 7-segment display Standby Standby, waiting for heat demand Mains ON / test phase (e.g. detector test) Startup Yellow Safety valve ON, air pressure switch test / POC test (timeout / locking Yellow Fan motor ON / air pressure switch test / settling time Yellow...
  • Page 45 Operation : The lockout reset button (info button) (EK) is the key operating element for resetting the burner control and for activating / deactivating the diagnostics functions. The multicolor signal lamp (LED) is the key indicating element for visual diagnostics. Both lockout reset button (EK) and signal lamp (LED) are located in the control panel.

  • Page 46: Program Sequence

    Program sequence : Version 1: • Ignition load < low-fire • Prepurging in high-fire • Parameter 515 = 1 (condition parameter 259.01 > 0 seconds)
  • Page 47 Program sequence : Version 2: • Ignition load > low-fire • Prepurging in high-fire • Parameter 515 = 1 (condition parameter 259.01 = 0 seconds)
  • Page 48 Phase Function number Lockout phase Standby, waiting for heat demand Operation, modulating operation Interval until release of load controller target (analog or 3-position step input) Under voltage Safety loop open Extraneous light on burner startup (timeout/locking after 30 seconds) Mains ON/test phase (e.g. detector test) Shutdown, actuator opens in CLOSE position (homerun) Safety valve ON, air pressure switch OFF, actuator opens in CLOSE position Part 1: Fan motor ON...
  • Page 49 Error code table : Red blink code of fault signal lamp (LED) Possible cause 2 x blinks No establishment of flame at the end of the safety time (TSA) - Faulty or soiled flame detector - Faulty or soiled fuel valves - Poor adjustment of burner, no fuel - Faulty ignition equipment 3 x blinks...
  • Page 50 Flame detection – detection electrode : Short-circuit current Max. AC 1 mA Required detector current Min. DC 2 μA, display approx. 45 % Possible detector current Max. DC 3 μA, display approx. 100 % Permissible length of detector cable (laid separately) 30 m (core-earth 100 pF/m) Measuring circuit Keys...
  • Page 51 Gas proving system : Valve proving is dependent on input valve proving ON / OFF (X2-02). When a leak is detected, the gas valve proving function ensures that the gas valves will not be opened and that ignition will not be switched on. Lockout will be initiated. Valve proving with separate pressure switch (P LT) Step 1: td4 –...
  • Page 52 Instruction, control and modify via AZL2x : The AZL2x.. display/programming unit is shown below: The keys functions are the following: Key F + A While pressing the two keys contemporarly, the code message will appear: by entering the proper password it is possible to access the Service mode. Info and Enter keys Used for Info and Service menues Used as Enter key in the setting modes...
  • Page 53 The display will show these data: Lock+unlock codes Flame Open valves Ignition transformers energised Fan motor energised Oil pre-heater energised Plant heat request Parameter setting mode Info mode Service mode Closing actuator Opening actuator Unit measure While pushing the button together with whatever else button, LME73 locks out; the display shows On stand-by position, appears On operation, all the phases appears with their number.
  • Page 54 List of phase with display AZL2x : Phase number Function Standby Standby, waiting for heat request Ph08 Power ON / test phase (e.g. detector test) Startup Ph21 Safety valve ON, air pressure switch test / POC test (timeout / locking after 5 seconds), actuator opens in low-fire position / CLOSE position Ph22 Fan motor ON or air pressure switch test / settling time...
  • Page 55 Error code list with operation via internal AZL : Error code Clear text Possible cause Loc 2 No establishment of flame at the - Faulty or soiled fuel valves end of the safety time (TSA) - Faulty or soiled flame detector - Poor adjustment of burner, no fuel - Faulty ignition equipment Loc 3...
  • Page 56 Entering the Parameter levels: y means of a proper use of the keys, it is possible to enter the various level parameters, as shown in the following flow chart :...
  • Page 57 Info level : Keep pushing the button until appears. Use + or - for scrolling the parameter list. If on the right side a dash-dot appears, it means the display doesn't show the full description. Push again for 1 to 3 s in order to show the full description. Below the visible Info parameters: Parameter Parameter list...
  • Page 58 Service level : Keep pushing the button until appears. Use + or - for scrolling the parameter list. . If on the right side a dash-dot appears, it means the display doesn't show the full description. Push again for 1 to 3 s in order to show the full description. Below the visible Info parameters: Parameter Parameter list...
  • Page 59 Process data Normalized speed Read only 100% 0.01 % Service Mains voltage Read only LME73.000A1: Service 175 V LME73.000A2: 350 V Flame intensity Read only 100% Service...
  • Page 60 Parameter level (Heating engeneering) : This level lets the engineer to modify some burner parameters. It is protect with a 4 digit password (SO level) and a 5 digit password (OEM level) Password input : push F and A buttons together until the display shows "code" and 7 underlines. The left one flashes. By move the flashing underline until it is on the desired position and push "enter".
  • Page 61 Repetition in the event of loss of flame during operation Edit 0 SO 0 = None 1 = None 2 = 1 x Repetition 241.00 Valve proving Edit 1 SO 0 = Off 1 = On 241.01 Valve proving Edit 0 SO 0 = During prepurge time (t1) 1 = During postpurge time (t8)
  • Page 62 Power setting Analog input (feedback potentiometer ASZxx.3x required) Edit 0 SO 0 = 3-position step input 1 = 0...10 V 2 = 0...135 Ω 3 = 0...20 mA 4 = 4...20 mA with lockout at I <4 mA 5 = 4...20 mA WARNING Parameter Num.
  • Page 64 Note: Specifications and data subject to change. Errors and omissions excepted.

This manual is also suitable for:

N925xN1060x

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