Related Manuals for Unigas C70N US
Summary of Contents for Unigas C70N US
- Page 1 C70N US Gas burners Premix Microprocessor controlled LMV 2x/3x MANUAL OF INSTALLATION - USE - MAINTENANCE BURNERS - BRUCIATORI - BRULERS - BRENNER - QUEMADORES - ГОРЕЛКИ M039682WA 0.0 01/2023...
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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 PART I: SPECIFICATIONS PART I: SPECIFICATIONS BURNERS FEATURES Note: the figure is indicative only Control panel with startup switch Gas train Electrical panel Cover Spacer Burner flange Electrodes Photocell Actuator 10 Silencer 11 Actuator 12 Air pressure switch Gas operation: From the supply line the gas fuel passes through the gas train (filter, safety valves, gas pressure regulator and butterfly valve). The pressure regulator sets the gas pressure within the combustion head utilization limits.
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Page 6: Burner Model Identification
PART I: SPECIFICATIONS Burner model identification Burners are identified by burner type and model. Burner model identification is described as follows. Type C70N US Model MD. SR. BURNER TYPE C70N US FUEL M - Natural gas PR - Progressive OPERATION (Available versions) -
Page 7: Performance Curves
PART I: SPECIFICATIONS Performance Curves C70N Performance curve C70N 7 6 5 1000 1250 1500 1750 2000 2250 2500 2750 3000 Potenza [kW] Confronto degli NOx con l’ O e CO Il seguente diagramma mostra le variazioni di emissioni di NOx in funzione dei valori di O o CO nei fumi, ottenuti da test di laboratorio bruciando gas naturale. - Page 8 PART I: SPECIFICATIONS Pressure in the Network / gas flow rate curves(natural gas)Pressure in the Network / gas flow rate cur- WARNING: the diagrams refers to natural gas. For different type of fuel please refer to the paragraph “Fuel” at the beginning of this chapter.
- Page 9 Overall dimensions (mm) - C70N 1020 1970 Boiler recommended burner flange drilling template Dimensions with Inverter...
- 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 PART II: NOTES FOR THE INSTALLER PART II: NOTES FOR THE INSTALLER How to read the burner “Performance curve” The procedure for matching a burner and evaluating the achievable emissions from a thermal unit can be broken down into a few sim- ple steps.The first step is the approximate choice of burner, considering the operating point with reference to burner performance.Then, with reference to the desired NOx emissions, the O concentration in the flue gas is determined.Finally, the correct choice of burner is...
- Page 12 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, it depends only on gas flow, provided combustion is properly adjusted, flue gases residual O2 percentage complies with “Recommended combustion values”...
- Page 13 PART III: INSTALLATION PART III: INSTALLATION WARNING: before executing the connections to the gas pipe network, be sure that the manual cutoff valves are closed. Packing 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 14 PART III: INSTALLATION SIDE UP SIDE DOWN The burner is provided with eyebolts, for handling operations and it can be lifted with a hydraulic lift or a small manual crane. (A) The burner is mounted on a stirrup provided for handling the burner by means of a fork lift truck: the forks must be inserted into the A anb B ways.
- Page 15 PART III: INSTALLATION Fitting the burner to the boiler The burner is shipped with the head included to avoid damage during transport. Please follow the following assembly steps/sequences: ATTENTION: The burner must not be ignited without the combustion head, gas ramp and all necessary connections and checks having been made.
- Page 16 PART III: INSTALLATION Fitting the burner to the boiler To install the burner into the boiler, proceed as follow: make a hole on the generator flange according to the drilling template at the paragraph “Overall dimensions” and screw in the studs place the gasket (5) on the generator flange;...
- Page 17 PART III: 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 18: Assembling The Gas Train
PART III: 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 III: 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 III: 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 III: INSTALLATION Siemens VGD Pressure taps Strainer (G 1/4") (G 1/8") (G 1/4") (G 3/4") (G 1/8") (G 1/4") (G 1/8") Legend pi Inlet pressure pm Pressure between valves po Outlet pressure...
- Page 22 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 coor- dinated and authorized by Technical Service. Always check in advance that the system electrical interlock is fitted with a safety circuit breaker.The installation must be built in accordance with the regulations in force and comply with basic safety rules.
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Page 23: Printed Circuit
PART III: INSTALLATION Procedure for accessing the equipment and making electrical connections Unscrew the screw as shown in Fig. 1 Lift the plate using the screws as shown in Fig. 2 Make the electrical connections Follow the electrical diagrams attached to the manual for the connections to the terminal strip MA. The electrical panel is supplied complete with a terminal strip for the connection to the system electrical line and, in case of on board control panel, a plug for the connection to the modulation probe (if any). - Page 24 PART III: INSTALLATION NOTE: In the case of standard burners, see the connection of probes / modulation signals on the following page. In any case, the wiring diagram attached to this manual always applies. Rotation of electric motor ATTENTION: the burners are supplied for three-phase 380/400/415/480 V supply, and in the case of three-phase 220/ 230/240 V supply it is necessary to modify the electrical connections into the terminal box of the electric motor and replace the overload tripped relay.
- Page 25 PART III: INSTALLATION Probe connection with 7 pins connector...
- Page 26 PART III: 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).
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Page 27: Limitations Of Use
PART IV: OPERATION PART IV: OPERATION DANGER Incorrect motor rotation can seriously damage property and injure people. All burner adjustment operations must be carried out by checking combustion using a previously correctly calibrated fume analyser. Always check that the chimney is free from obstructions, never obstructed, and that the passage of fumes is always free. ... -
Page 28: Gas Operation
PART IV: OPERATION Burner front panel Keys Lock-out LED Hi-flame operation LED Lo-flame operation LED “Ignition transformer operation” LED “Fan motor overload tripped” LED “EV2 opening” LED B2 B3 “EV1 opening” LED “Gas pressure switch signal ” LED Main switch Reset pushbutton for control box Operation selector MAN - AUTO (operation in manual or automatic mode):... - Page 29 PART IV: OPERATION ADJUSTING AIR AND GAS FLOW RATES WARNING! During commissioning operations, do not let the burner operate with insufficient air flow (danger of formation of carbon monoxide). WARNING! the combustion air excess must be adjusted according to the values in the following chart. Recommended combustion parameters Recommended (%) O Empfohlener O...
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Page 30: User Interface
PART IV: OPERATION User interface The AZL2x.. display is shown below: The keys functions are the following: Service mode Info mode Parametere setting mode Plant heat request Oil pre-heater energised Fan motor energised Ignition transformers energised Open valves Flame Lock+unlock codes Closing actuator Opening actuator Unit measure... - Page 31 PART IV: OPERATION Manifacturer level (OEM) PHASES LIST During operation, the following program phases are shown. The meaning for each phase is quoted in the table below Fase / Funzione Function Ph00 Fase blocco Lockout phase Ph01 Fase di sicurezza Safety phase Ph10 t10 = tempo raggiungimento posizione riposo...
- Page 32 PART IV: OPERATION Info level To enter the Info level, proceed as follows: in any menu position, press keys + and - at the same time, then the program will start again: the display will show OFF. until the display will show InFo, Press the enter (InFo) key then il will show the first code (167) flashing, on the right side it will show the data entered.
- Page 33 PART IV: OPERATION If a message like the one below is shown during operation, it means that the burner is locked out and the Errore code is shown (in the example “error code:4”); this message is alternating with another message Diagnostic code (in the example “diagnostic code:3”).
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Page 34: Parameter Description
PART IV: OPERATION The service level shows all the information about flame intensity, actuators position, number and lock codes: Parameter Description Flame intensity % output, if set = automatic operation Actuators position, 00=combustibile; 01= aria Lock-outs number 701..725 Lock-outs History (see chapter 23 in the LMV2x manual) .the first parameter will be “954”: the percentage of flame is shown on the right. - Page 35 PART IV: 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 IV: OPERATION ADJUSTING THE GAS VALVES GROUP Calibration air and gas pres- sure 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.
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Page 37: Routine Maintenance
PART V: MAINTENANCE PART V: 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 38 PART V: MAINTENANCE Gas filter maintenance Gas filter included in the valve body 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 replace the gas filter, proceed as follows: MB-DLE MB-DLE...
- Page 39 PART V: 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.
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Page 40: Electrodes Adjustment
PART V: 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 41: Seasonal Stop
PART V: MAINTENANCE 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. - The burner status is considered to be at its limit if it is technically impossible to continue using it due to non-compliance with safety requirements or a decrease in performance. - Page 42 PART V: 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 - 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.