Related Manuals for Unigas P91A
Summary of Contents for Unigas P91A
- Page 1 P91A P92A P93A P512A P515A P520A Gas burners Progressive / Fully modulating MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039139CG Rev. 7 05/2021...
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Page 2: General Introduction
DANGERS, WARNINGS AND NOTES OF CAUTION THIS MANUAL IS SUPPLIED AS AN INTEGRAL AND ESSENTIAL PART OF THE PRODUCT AND MUST BE DELIVERED TO THE USER. INFORMATION INCLUDED IN THIS SECTION ARE DEDICATED BOTH TO THE USER AND TO PERSONNEL FOLLOWING PRODUCT INSTALLATION AND MAINTENANCE. -
Page 3: Directives And Standards
3b) FIRING WITH GAS, LIGHT OIL OR OTHER FUELS DIRECTIVES AND STANDARDS Gas burners GENERAL European directives The burner shall be installed by qualified personnel and in compliance -Regulation 2016/426/UE (appliances burning gaseous fuels) with regulations and provisions in force; wrong installation can cause -2014/35/UE (Low Tension Directive) injuries to people and animals, or damage to property, for which the -2014/30/UE (Electromagnetic compatibility Directive) -
Page 4: Symbols Used
Burner data plate Type Gas - Light oil burners For the following information, please refer to Model Year European Directives the data plate: S.Number -Regulation 2016/426/UE (appliances burning gaseous fuels) burner type and burner model: must be Output Oil Flow -2014/35/UE (Low Tension Directive) reported in any communication with the Fuel... - Page 5 PART I: SPECIFICATIONS PART I: SPECIFICATIONS GENERAL FEATURES Note: the figure is indicative only Control panel with startup switch Gas train Electrical panel Cover Blast tube + Combustion head Flange Silencer Adjusting cam Actuator 10 Air pressure switch 11 Combustion head adjusting ring nut Gas operation: the gas coming from the supply line passes through filter, gas valves and pressure regulator.
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Page 6: Burner Model Identification
Burners are identified by burner type and model. Burner model identification is described as follows. Type P91A Model BURNER TYPE P91A, P92A, P93A, P512A, P515A, P520A, P525A FUEL M - Natural gas L - LPG OPERATION (Available versions) PR - Progressive... -
Page 7: Technical Specifications
PART I: SPECIFICATIONS Technical Specifications BURNER TYPE P91A M-... P92A M-... P93A M-... 480 - 2670 480 - 3050 550 - 4100 Output min. - max. kW Natural gas Fuel see next paragraph Category Gas rate- Natural gas 51 - 283... - Page 8 PART I: SPECIFICATIONS BURNER TYPE P512A M-... P515A M-... P520A M-... P525A M-..50 P525A M-..xx 600 - 4500 770 - 5200 1000 - 6400 2000 - 6700 2000 - 8000 Output min. - max. kW Natural gas Fuel see next paragraph Category Gas rate- Natural gas 63 - 476...
- Page 9 Overall dimensions (mm) - P91A, P92A, P93A, P512A-P515A, P520A, P525A BOILER RECOMMENDED DRILLING TEMPLATE P5xxA P9xA BURNER FLANGE O min. O max. ,** It is recommended to fit a counterflange between burner and boiler. As an alternative, make a smaller hole H, but greather than Y and fit the blast tube from the internal side of boiler.
- Page 10 1540 1049 474** P525A 1541 1021 1575 1084 474** 1541 1021 1658 1167 474** BS = standard blast tube BL = long blast tube DN = gas valves size B*: SPECIAL blast tube lengths must be agreed with Cib Unigas...
- Page 11 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 instal- Campo di lavoro bruciatori lled, 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);...
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Page 12: Performance Curves
PART I: SPECIFICATIONS Performance Curves P91A P92A 1200 1600 2000 2400 2800 3200 1200 1600 2000 2400 2800 P93A P512A 500 1000 1500 2000 2500 3000 3500 4000 4500 1500 2500 3500 4500 P515A P520A 1500 2500 3500 4500 5500... - Page 13 PART I: SPECIFICATIONS Pressure in the Network / gas flow rate curves (natural gas) P91A M-.. P92A M-.. P93A M-.. P512A M-.. P515A M-.. P520A M-.. P525A M-.. Rp2 P525A M-.. DN65-80-100 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 14 PART I: SPECIFICATIONS Pressure in the Network / gas flow rate curves(LPG) P91A L-.. P93A L-.. P512A L-.. P520AL-.. 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). To know the minimum pressure at the gas train inlet, necessary to get the requested gas rate, add the pressure value in the combustion chamber to the value read on the y-axis.
- Page 15 PART I: SPECIFICATIONS Combustion head gas pressure curves Combustion head gas pressure depends on gas flow and combustion chamber backpressure. When backpressure is subtracted, i depends only on gas flow, provided combustion is properly adjusted, flue gases residual O2 percentage complies with “Recommended combustion values”...
- Page 16 PART I: SPECIFICATIONS Pressure - rate in combustion head curves (natural gas) Curves are referred to pressure = 0 mbar in the combustion chamber! P91A M-.. P92A M-.. 100 120 140 160 180 200 220 240 260 280 300 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 340 P93A M-..
- Page 17 PART I: SPECIFICATIONS Pressure - rate in combustion head curves (LPG) Curves are referred to pressure = 0mbar in the combustion chamber! P91A L-.. P93A L-.. 100 110 120 130 140 150 160 P512A L-.. P520A L-.. 1 0 0...
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Page 18: Transport And Storage
PART II: INSTALLATION PART II: INSTALLATION MOUNTING AND CONNECTING THE BURNER Transport and storage ATTENTION! The equipment must be installed in compliance with the regulations in force, following the manufac- turer’s instructions, by qualified personnel. All handling operations must be carried out with appropriate resources and qualified personnel ATTENTION: Use intact and correctly dimensioned hoisting equipment, conforms to the local regulations and health and safety regulations. - Page 19 PART II: INSTALLATION Fitting the burner to the boiler To install the burner into the boiler, proceed as follows: make a hole on the closing door of the combustion chamber as described on paragraph “Overall dimensions”) place the burner to the boiler: lift it up and handle it according to the procedure described on paragraph “Handling the burner”; place the 4 stud bolts (5) on boiler’s door, according to the burner drilling template described on paragraph “Overall dimensions”;...
- Page 20 PART II: INSTALLATION GAS TRAIN CONNECTIONS The diagrams show the components of the gas trai included in the delivery and which must be fitted by the installer.The diagrams are in compliance with the current laws. Gas train with valves group VGD and MBE with built-in gas pressure governor + gas leakage pressure switch (PGCP) BY OTHERS SUPPLIED BY BURNER CONSTRUCTOR GAS INLET...
- Page 21 PART II: INSTALLATION GAS TRAIN CONNECTIONS The diagrams show the components of the gas train included in the delivery and which must be fitted by the installer.The diagrams are in compliance with the current laws. ”direction” arrows for installation gas supply network Keys 1A..1EGasket 2 Gas filter...
- Page 22 PART II: INSTALLATION MultiBloc MBE ALLA V. FARFALLA Example of gas train MBE 501939 GAS BRUCIATORE ø185 VD-R VD-V VD-R VD-V Gas filter PGMAX PGMAX PGMI PGMIN PS pressure sensor PGCP PGCP ATTENTION: once the gas train is mounted according, the gas proving test mus be performed, according to the procedure set by the laws in force.
- Page 23 PART II: INSTALLATION Mounting VD-R & PS-... ActuatorVD-V ActuatorVD-R M12 x 5 Pin The actuator VD-V does not need any adjustment (funzione ON-OFF) The actuator VD-R It must be combined with the PS sensor (include regolatore di pressione) VD-R + PS 1.
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Page 24: Mounting Positions
PART II: INSTALLATION = BS SKP1. SKP2. SIEMENS VGD.. Mounting positions version with SKP2 (built-in pressure stabilizer) Siemens VGD valves with SKP actuator: The pressure adjusting range, upstream the gas valves group, changes according to the spring provided with the valve group. To replace the spring supplied with the valve group, proceed as fol- lows: - Remove the cap (T) - Page 25 PART II: INSTALLATION 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 ...
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Page 26: 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 27 PART III: OPERATION PART III: OPERATION DANGER! Incorrect motor rotation can seriously damage property and injure people.WARNING: before starting the burner up, be sure that the manual cutoff valves are open and check that the pressure upstream the gas train complies the value quoted on paragraph “Technical specifications”.
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Page 28: Gas Operation
PART III: OPERATION BURNER FRONT PANEL Keys Lock-out LED “EV2 opening” LED Operation selector MAN - AUTO (operation in manual or automatic mode): Hi-flame operation LED “EV1 opening” LED MIN = operation with min output Lo-flame operation LED “Gas pressure switch signal ” LED MAX = operation at the max output “Ignition transformer operation”... - Page 29 PART III: OPERATION AIR FLOW AND FUEL ADJUSTMENT WARNING! During commissioning operations, do not let the burner operate with insufficient air flow (danger of formation of carbon monoxide); if this should happen, make the fuel decrease slowly until the normal combustion values are achieved.
- Page 30 PART III: OPERATION Drive the burner to high flame stage (please refer to the LMVx documentation attached to this manual). To adjust the air flow rate in the high flame stage, loose the RA nut and screw VRA as to get the desired air flow rate: moving the rod TR towards the air damper shaft, the air damper opens and consequently the air flow rate increases, moving it far from the shaft the air damper closes and the air flow rate decreases.
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Page 31: Pressure Taps
PART III: OPERATION MultiBloc MBE Regulation VD-R whith PS Setting scale is „Not“ linear! Various sensors available. Output pressure according to sensor‘s measuring range. Increasing pressure Adjust the outlet pressure to the value specified by the burner or equipment manufacturer! While making outlet pressure adjustments, do not exceed a value that creates a hazardous condition to the burner! - Page 32 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 33 PART III: OPERATION adjustment is accomplished. “MAX” head position ”MIN” head position CAUTION: perform these adjustments once the burner is turned off and cooled. Center head holes gas flow regulation (natural gas burners) To adjust the gas flow, partially close the holes, as fol- lows: loosen the three V screws that fix the adjusting plate D;...
- Page 34 PART III: OPERATION MultiBloc MBE MultiBloc VD 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 35 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.
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Page 36: Electrodes Adjustment
PART IV: MAINTENANCE Head adjusting screw Threaded rod Fixing screw Gas manifold ”O” ring Cover Baffle 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. - Page 37 PART IV: MAINTENANCE Replacing the detection electrode (natural gas burners) ATTENTION: avoid the electrode to get in touch with metallic parts (blast tube, head, etc.), otherwise the boiler operation would be compromised. Check the electrode position after any intervention on the combustion head. To replace the detection electrode, proceed as follows: remove the combustion head according to the procedure on paragraph “Removing the combustion head”;...
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Page 38: Seasonal Stop
PART IV: MAINTENANCE Control box Minimum detection signal 70µA (with UV detector) Siemens LME7... Fig. 9: Detection by photocell QRA.. Burner service term - In optimal operating conditions, and with preventive maintenance, the burner can last up to 20 years. - Upon expiry of the burner service term, it is necessary to carry out a technical diagnosis and, if necessary, an overall repair. - Page 39 SPARE PARTS Desription Code P91A P92A P93A P512A P515A P520A P525A 2020448 2020448 2020448 CONTROL BOX 2020448 2020448 2020448 2020448 INGNITION ELECTRODE 2080266 2080266 2080266 2080266 2080266 2080266 2080266 DETECTION ELECTRODE 2080107 2080107 2080107 2080118 2080118 2080118 2080118 GAS FILTER - Rp 2”...
- Page 40 BURNER EXPLODED VIEW (P91A - P92A - P93A - P512A - P515A - P520A) ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION STANDARD BLAST TUBE 5.5.2 ELBOW 14.1.1 SPACER BOARD 5.5.3 NIPPLE 14.1.2 LEVERAGE 2.2.1 OUTPUT MODULATOR 5.5.4 GAS PRESSURE 14.1.3 ADJUSTING CAM COVER 5.5.5...
- Page 41 3.2.1 12.1 12.3 3.2.3 12.2 14.5 5.5.7 5.5.1 5.5.6 5.5.5 5.5.2 14.3 14.6 14.2 14.7 14.4 14.1.4 14.1.5 5.5.9 5.5.4 5.5.3 5.5.8 14.1.2 3.2.2 14.1.3 14.1.1 2.2.1...
- Page 42 BURNER EXPLODED VIEW (P525A) ELEM DESCRIZIONE ELEM DESCRIZIONE ELEM DESCRIZIONE STANDARD BLAST TUBE BRACKET COVER BOARD GENERATOR GASKET COVER AIR INTAKE DAMPER AIR PRESSURE SWITCH PIPE STANDARD COMBUSTION HEAD AIR INTAKE DAMPER PRESSURE PLUG OIL GUN HOLDER AIR INTAKE INLET BRACKET LOUVER SHAFT SCREW...
- Page 44 C.I.B. UNIGAS - M039139CG WIRING DIAGRAMS BURNERS FITTED WITH PRINTED CIRCUIT Wiring diagram SE21-018 Complete key SE21-018 MANUAL SWITCH 0)OFF 1)HIGH FLAME 2)LOW FLAME 3)AUTOMATIC FLAME DETECTION ELECTRODE GAS ELECTRO-VALVE UPSTREAM (OR VALVES GROUP) GAS ELECTRO-VALVE DOWNSTREAM (OR VALVES GROUP)
- Page 45 PART IV: MAINTENANCE TROUBLESHOOTNG 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 56 C.I.B. UNIGAS S.p.A. Via L.Galvani, 9 - 35011 Campodarsego (PD) - ITALY Tel. +39 049 9200944 - Fax +39 049 9200945/9201269 web site: www.cibunigas.it - e-mail: cibunigas@cibunigas.it Note: specifications and data subject to change. Errors and omissions excepted.
- Page 57 LME73.000Ax + PME73.831AxBC LME73.831AxBC Service instruction manual M12921CB Rel.1.2 02/2016...
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Page 58: 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 59: 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 60 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 61 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.
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Page 62: Program Sequence
Program sequence : Version 1: • Ignition load < low-fire • Prepurging in high-fire • Parameter 515 = 1 (condition parameter 259.01 > 0 seconds) - Page 63 Program sequence : Version 2: • Ignition load > low-fire • Prepurging in high-fire • Parameter 515 = 1 (condition parameter 259.01 = 0 seconds)
- Page 64 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 65 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 66 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 67 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 68 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 69 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 70 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 71 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 72 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 73 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 74 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 75 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 76 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 77 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 78 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 80 Note: Specifications and data subject to change. Errors and omissions excepted.
- Page 86 GEFRAN 1600V 15-18 16...