Related Manuals for Unigas N880X-FGR
Summary of Contents for Unigas N880X-FGR
- Page 1 N880X-FGR N925X-FGR N1060X-FGR LAMTEC BT3xx Microprocessor controlled Gas - Light oil burners MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039578ZB 0.0 11/2022...
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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 ...
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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 Burner light-oil: additional damper for exclusion FGR WARNING! For burner Natural gas / Light oil: during diesel operation it is recommended to use an additional damper to close the flow of recirculation gas FGR. FGR (ricirculate flue gas) damper Additional damper with actuator on chimney (option 1) Option 1: Damper with actuator Connect the actuator to the electrical predisposition inside the electrical panel.
- Page 6 PART I: SPECIFICATIONS PART I: SPECIFICATIONS GENERAL FEATURES Mimic panel with startup switchGas valve group Cover Flange Blast tube-Combustion head group Air intake Actuator FGR, flue gas recirculation Oil manifold Oil pressure governor 10 Pump 11 Air pressure switch 12 Head adjusting ring nut Gas operation: the gas coming from the supply line, passes through the valves group provided with filter and governor.
- Page 7 Burners are identified by burner type and model. Burner model identification is described as follows. Type N880X-FGR Model MD. SP. BURNER TYPE N880X-FGR - N925X-FGR - N1060X-FGR FUEL MG - Natural gas-Light oil OPERATION (Available versions) MD - Fully modulating - PR - Progressive BLAST TUBE...
- Page 8 125 1970 2070 384 1307 722 35 562 884 175 445 545 648 1492 684 1950 1349 623 489 539 520 709 660 831 M16 651 460 460 460 958 204 754 1192 478 1161 448 330 630 50 734 260 300 741 B*: SPECIAL blast tube lengths must be agreed with Cib Unigas...
- Page 9 BT3xx 3I2MG-21 v0 Hydraulic diagram LEGEND POS OIL TRAIN Filter Flexible hose Pump and pressure governor oil inlet Electrical motor Solenoid valve oil outlet Solenoid valve Oil distributor Pressure gauge Pressure governor Pressure switch 16.1 One-way valve 16.1 One-way valve Flexible hose Manual valve combustion air...
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Page 10: Performance Curves
PART I: SPECIFICATIONS Performance Curves Performance Curves N880X MG Power [kW] N925X MG N1060X MG Power [kW] Power [kW] To get the input in kcal/h, multiply value in kW by 860. Data are referred to standard conditions: atmospheric pressure at 1013mbar, ambient temperature at 15° C NOTE: The performance curve is a diagram that represents the burner performance in the type approval phase or in the laboratory tests, but does not represent the regulation range of the machine. - Page 11 PART I: SPECIFICATIONS Pressure in the Network / gas flow rate curves(natural gas) N880X MG N925X MG Gas rate Stm Gas rate Stm N1060X MG Gas rate Stm The values in the diagrams refer to natural gas with a calorific value of 8125 kcal/Stm (15°C, 1013 mbar) and a density of 0.714 kg/Stm The values in the diagrams refer to GPL with a calorific value of 22300 kcal/Stm...
- 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! N880X M-.. N925X M-.. Gas rate Stm Gas rate Stm N1060X M-.. Gas rate Stm...
- Page 13 if the burner size is insufficient, a larger machine must be selected, the depowering factor must be re-checked and the above pro- cedure repeated. N880X-FGR Thermic Load (MW/m N925X-FGR Thermic Load (MW/m...
- Page 14 PART I: SPECIFICATIONS N1060X-FGR Thermic Load (MW/m...
- Page 15 PART II: NOTES FOR THE INSTALLER PART II: 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 PART II: NOTES FOR THE INSTALLER 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 17 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 18 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 19 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 pressure switch (PGMIN/LT) BY OTHERS SUPPLIED BY BURNER CONSTRUCTOR...
- Page 20 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).
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Page 21: Assembling The Gas Train
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 22 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 23 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 24 PART II: INSTALLATION Siemens VGD Pressure taps Legend pi Inlet pressure Strainer pm Pressure between val- (G 1/4") (G 1/8") (G 1/4") (G 3/4") (G 1/8") (G 1/4") (G 1/8") po Outlet pressure...
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Page 25: Gravity Circuit
PART II: INSTALLATION OIL TRAIN CONNECTIONS Hydraulic diagrams for light oil supplying circuits GRAVITY CIRCUIT RING CIRCUIT 1 Manual valve 2 Light oil filter 3 Light oil feeding pump 4 One way valve 5 Flexible hoses 6 Relief valve SUCTION CIRCUIT NOTE: in plants where gravity or ring feed systems are provided, install an automatic interception device. - Page 26 PART II: INSTALLATION Depending on the installed pump, it is possible to design the plant for single or double pipe feeding line Single-pipe system: a single pipe drives the oil from the tank to the pump’s inlet. Then, from the pump, the pressurised oil is driven to the nozzle: a part comes out from the nozzle while the othe part goes back to the pump.
- Page 27 PART II: INSTALLATION About the use of fuel pumps Do not use fuel with additives to avoid the possible formation over time of compounds which may deposit between the gear teeth, thus obstructing them. After filling the tank, wait before starting the burner. This will give any suspended impurities time to deposit on the bottom of the ...
- Page 28 PART II: INSTALLATION VR. After removal of cover screw: pressure regulation Suntec T.. Viscosity 3 - 75 cSt Oil temperature 0 - 150 °C Minimum suction pressure - 0.45bar to prevent gasing Maximum suction pressure 5 bar Rated speed 3600 rpm max. Inlet G3/4 Pressure gauge port G1/4 Vacuum gauge port to measure the inlet vacuum G1/4...
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Page 29: 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 30 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 31 PART III: OPERATION Fig. 3 - Burner control panel B2 B3 Keys Main 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...
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Page 32: Gas Operation
PART III: OPERATION Choose the type of fuel by turning the switch, on the burner control panel. CAUTION: if the fuel chosen is light oil, be sure the cutoff valves on the feed and return pipes are open. Check the control box is not locked; if so, reset it by means of the reset LMV button. ... - Page 33 PART III: OPERATION Integrated proving system burners equipped with BT3x When the burner is switched off, the BT3x device proceeds with an evacuation test, opens the EV1 valve (burner side) and makes sure to bring the test volume (space between EV2 and EV1) to atmospheric pressure. The BT3xx device uses only one pressure switch (PGMIN/LT) mounted between the EV1-EV2 valves which acts as a leak test in the "Gas valve seal"...
- Page 34 PART III: OPERATION SETTING THE BURNER CURVE Initial home page: keep thermostat open. Burner Unlock the controller: press ENTER remain in stand-by Info Manual Setting Press the right key to position on the Settings icon (indicated with wrench and hammer) Press ENTER Press ENTER again after selecting 'the key icon'.
- Page 35 PART III: OPERATION Keep the password “0000“ and confirm with ENTER. New page, level 1 unlocked Right click to EDIT. Press ENTER to enter the “curves page”. Air & gas position at burner’s ignition 1 ignition position 2 air servomotor position (digit) 1 gas servomotor position (digit) VALUES VARY FROM BURNER TO BURNER...
- Page 36 PART III: OPERATION Close the thermostat the burner starts. Pre-purge. The controller moves the servomotors to the ignition position and excites the ignition transformer. If the burner starts with those settings, this page will appear: If the burner does not start with those settings the chap- ter "SETTING THE IGNITION POINT WITH BURNER IN STAND-BY”...
- Page 37 PART III: OPERATION Check the lock code & press ENTER to unlock. Press ENTER to modify the positions (burner in stand- Click up to increase the gas opening position or down to decrease it. Clickup to increase the air opening position or down to decrease it.
- Page 38 PART III: OPERATION Press ENTER to save the new settings. CLOSE THE THERMOSTAT LINE BURNER OPERATING: SETTING PARAMETERS Check the combustion quality (with a flue gas analyzer). To modify the combustion valves and adjust servomo- tors position (gas and air), press ENTER. Click up to increase the gas opening position or down to decrease it.
- Page 39 PART III: OPERATION Press ENTER to save the new settings. Click up to quit the ignition position. Check the combustion quality in all positions (from mini- mum to maximum output) and adjust the gas and air setting if necessary (as indicated on chapter “SETTING THE IGNITION POINT WITH BURNER IN STAND?BY”).
- Page 40 PART III: OPERATION Press EXIT again to quit main menu. Press EXIT again to quit settings. The burner runs now in automatic mode. In case of troubles, the burner will go on lock?out mode and thereason will be indicated on the display. Exemple: H009 –...
- Page 41 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 42 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 43 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. .The combustion head position affects the flame stability.The diffuser position must be set during the commissioning according to the regulation needs.
- Page 44 Fig. 20 (as far as reading the pressure values, see next paragraphs). NOZZLE SUPPLY PRESSURE NOZZLE FLUIDICS WR2/UNIGAS M3 BERGONZO B FLUIDICS NOZZLE: REFERENCE DIAGRAM (INDICATIVE ONLY) Atomisation angle...
- Page 45 PART III: OPERATION NOZZLE SUPPLY PRESSURE = 20 bar. VISCOSITY AT NOZZLE = 5 cSt The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar)
- Page 46 PART III: OPERATION FLUIDICS KW3...60° NOZZLE SUPPLY PRESSURE = 20 bar. VISCOSITY AT NOZZLE = 5 cS The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar) The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar)
- Page 47 PART III: OPERATION FLUIDICS KW3...60° NOZZLE SUPPLY PRESSURE = 20 bar. VISCOSITY AT NOZZLE = 5 cSt The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar) The nominal size of the nozzle is indicated at the ends of the curve Pressure on return (bar) The nominal size of the nozzle is indicated at the ends of the...
- Page 48 PART III: OPERATION Oil Flow Rate Settings Once the air and gas flow rates are adjusted, turn the burner off, switch to the oil operation (OIL, on the burner control panel). with the electrical panel open, prime the oil pump acting directly on the related CP contactor (see next picture): check the pump motor rotation and keep pressing for some seconds until the oil circuit is charged;...
- Page 49 PART III: OPERATION Minimum oil pressure switch (when provided) The minimum oil pressure switch on the inlet line, checks that the pressure does not drop below a default value. The pressure switch must be set, say, at 10% under the pressure at the nozzle. Maximum oil pressure switch The oil pressure switch on the return line, checks that the pressure does not exceed a default value.
- Page 50 PART IV: MAINTENANCE PART IV: MAINTENANCE WARNING: ALL OPERATIONS ON THE BURNER MUST BE CARRIED OUT WITH THE MAINS DISCONNECTED AND THE FUEL MANAUL CUTOFF VALVES CLOSED! ATTENTION: READ CAREFULLY THE “WARNINGS” CHAPTER AT THE BEGINNIG OF THIS MANUAL. 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;...
- Page 51 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 52 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 53 PART IV: MAINTENANCE Thecnical procedure of self cleaning filters substitution (valid for all models) 1 Close the bowl valve before the self cleaning filter 2 Switch off any electrical equipment on board on the filter (example motorization or heaters) WARNING! Drain the system by unscrewing the drain screw on the bottom of the self cleaning filter 3 Disconnect the outlet pipe from the cover of the self cleaning filter 4 Remove the cover with all the filter pack, leaving only the bowl on the line 5 Clean any residue on the bottom of the bowl and clean the seat of the O-ring seal...
- Page 54 PART IV: MAINTENANCE Replacing the ignition electrodes ATTENTION: avoid the ignition and detection electrodes to contact metallic parts (blast tube, head, etc.), otherwise the boi- ler’s operation would be compromised. Check the electrodes position after any intervention on the combustion head. To replace the ignition electrodes, proceed as follows: 1 remove the burner cover;...
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Page 55: Electrodes Adjustment
PART IV: MAINTENANCE Electrodes Adjustment Important Note: Check the ignition and detection electrodes after removing/adjusting the combustion head.Adjust the electrodes posi- tion, according to the quotes shown othe next picture mm 8 mm mm 5 mm 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 56: Seasonal Stop
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. UV cell Flame detection probe To clean/replace the detection photocell, proceed as follows:... - Page 57 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 58 PART IV: MAINTENANCE * No electric power supply * Wait for electric power supply is back * Main switch open * Close the switch * Thermostats open * Check set points and thermostat connections * Bad thermostat set point or broken thermostat * Set or replace the thermostat * No gas pressure * Restore gas pressure...
- Page 60 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.