baltur GI MIST 350 DSPGM, Instruction

Page 1: ... Instruction for burners model Edition 2005 10 Cod 0006080103 en GIMIST350DSPGM GIMIST420DSPGM GIMIST510DSPGM ...

Page 2: ...for gas burners or the gas part of duel fuel burners gas light oil or gas heavy oil when such burners have been ordered in non compliance with the EC Standard or Italian UNI Standard because they are to be used for special purposes not provided for in the above mentioned standards L Amministratore delegato Dott Riccardo Fava The works on the burner and on the system have to be carried out only by ...

Page 3: ... operations two stage progressive with natural gas 18 Description of operations modulating with natural gas 19 Starting up and regulation with light oil 21 Regulation of the combustion head 23 Starting up and regulation with methane gas 25 Regulation of the combustion head 28 Reading gas methane meter 30 Use of the burner Maintenance 31 The gas valve unit 32 Details of the modulation control motor...

Page 4: ...14 kV 30 mA VOLTAGE Volt 3N 230 400 50Hz 3N 230 400 50Hz 3N 230 400 50Hz FAN MOTOR kW 15 50Hz 18 5 50Hz 18 5 50Hz PUMP MOTOR kW 2 2 50Hz 2 2 50Hz 3 50Hz STANDARD ACCESSORIES GI mist 350 DSPGM GI mist 420 DSPGM GI mist 510 DSPGM BURNER FIXING FLANGE 1 INSULATING GASKET 2 FILTER N 1 1 1 2 FLEXIBLES PIPE N 2 1 1 2 x 1 1 2 STOD BOLTS N 6 M20 EXAGONAL NUTS N 6 M20 FLAT WASHERS N 6 Ø20 NATURAL GAS LIGHT...

Page 5: ...M N MIN MAX Ø Ø Ø Ø GI mist 350 DSPGM 1345 660 685 1585 750 835 545 1970 230 600 355 325 DN65 480 M20 375 GI mist 420 DSPGM 1345 660 685 1530 750 780 490 2030 320 625 400 355 DN65 520 M20 420 GI mist 510 DSPGM 1345 660 685 1540 750 790 495 2030 320 625 400 355 DN80 520 M20 420 N 0002921292 Rev WORKING FIELD ...

Page 6: ...head it is advisable to fasten the boiler s iron plate first and then the burner When the boiler door is not fitted with heat insulation it is necessary to insert an insulating protection at least 10 mm thick between the plate and the boiler The boiler plate should be according to our drawing and have a minimum thickness of 10 mm in order to avoid possible deformation Before fastening the burner to ...

Page 7: ...ner must be equipped with a fused switch Furthermore regulations require a switch on the burner s feed line which should be located outside the boiler room in an easily accessible position All electric lines must be protected by flexible sheaths be firmly secured and be laid a long way from high temperature parts For the electrical connections line and thermostat see the relevant diagram N 8807 Rev ...

Page 8: ...y it is possible to accurately regulate the delivery and therefore the combustion and thus improve yield The dimension of the gas pipeline should be in function with the quantity of gas it has to deliver We advise maintaining the load loss at a low level not more than 10 of the gas pressure value at the burner it should be kept in mind that the load loss is added to the pressure existing when the ...

Page 9: ...on joint 11 A couple of flane D Distance between pressure stabilizer and valve about 1 5 2 m DIAGRAM OF CONNECTING A BURNER TI THE GAS PIPE NETWORK AT AVERAGE PRESSURE 1 Measuring and reducing unit 2 Interception 3 Filter 4 Reducer 5 Meter 6 Wire gauze flame trap 7 Eventual automatic overflow valve it should obviously unload outside in a suitable place 8 Emergency interception installed outside 9 Bal...

Page 10: ...erations All rules and regulations existing in the country of installation should be strictly complied with and the local fire brigade should be consulted FURTHER INSTRUCTIONS TO START A MIXED BURNER It is advisable to first carry out the starting with the liquid fuel because in this case the delivery is conditioned by the available nozzle whereas the delivery of methane be varied as you like by wor...

Page 11: ...ate takes place gradually both as delivery of combu stion air and of fuel The burner s control box cyclic relay is connected by operating panel switch I Control box relative Pro grammer LFL 1 333 Cyclic relay Safety Time in seconds 3 Pre Ventilation Oil Pre circu lation Time in seconds 31 5 Pre ignition Time in seconds 6 Post ignition Time in seconds 3 Time between 1st flame Start of Modu lation in...

Page 12: ...r which regulates the delivery starts turning and de termines a gradual increase in the fuel delivery and in the relative combustion air until it reaches the maximum delivery value at which the burner has been regulated The increase in fuel delivery is determined by a disk with a varied profile which by rotating can determine a greater compression of the return pressure regulator spring and thus an...

Page 13: ...the control box carries voltage to the magnet which by means of appropriate levers moves backwards the two rods which intercept the flow outward and return of light oil to the nozzle This moving backwards of the rods also determines a closing of the passage by pass inside the atomizer unit Consequently the pump pressure is taken to the normal value of about 20 22 bar Deviation of the two rods from ...

Page 14: ...or which regulates fuel air delivery to make an adjustment in the fuel delivery and relative combustion air delivery In this way the delivery regulating system fuel air reaches a position of equilibrium which corresponds to a fuel delivery and a relative combustion air delivery equal to the quantity of heat required by the boiler As in indication it should be kept in mind that the field of variatio...

Page 15: ...cuum meter connection Return Pump plate Delivery nozzle 1 4 Pressure gauge connection Heating element seal Pump pressure regulation 20 22 bar Suction 1 4 Vacuum meter connection Return Delivery nozzle 1 4 Pressure gauge connection Heating element seal Pump plate Pump pressure regulation 20 22 bar N 9353 1 Rev N 0002900580 Rev ...

Page 16: ... allows it regulated at a temperature or pressure value superior to that existing in the boiler the servomotor which regulates the gas air delivery starts turning and determines a gradual increase in the gas delivery and in the relative combustion air until it reaches the maximum delivery value at which the burner has been regulated N B The V cam of the servomotor regulating air gas delivery see B...

Page 17: ... see BT 8562 1 inserts almost immediately the principle gas valve which in turn opens completely Gas delivery is not de termined by the principle valve but by the position of the gas delivery regulation valve see BT 8814 The burner remains in the maximum delivery position until the temperature or pressure reaches the limit set for the intervention of the modulation probe and makes the servomotor r...

Page 18: ... pressure switch 7 Seal control device LDU and pressure switch 8 Connection between main valves for the valve seal control device N BT 8814 DETAILS ON THE BUTTERFLY VALVE FOR THE REGULATION OF THE GAS DELIVERY The notch shown on the end of the shaft indicates the position of the butterfly valve shutter N 0002910611 Rev N 8814 Rev 9 Minimum and maximum gas pressure switches with pressure take off 10...

Page 19: ... pipe Wait until the fuel comes out of the hole without air bubbles and then re close the gate valve 11 Insert a manometer end of the scale about 3 bar into the vacuumeter connection point on the pump and control the value of the pressure at which the fuel arrives at the burner pump Insert a manometer end of the scale 30 bar into the manometer connection point provided on the pump and control it s...

Page 20: ...te properly the water in the system should be at the right temperature and the burner should have been operating for at least 15 minutes If the appropriate instruments are not available judgement can be based on the colour of the flame We advise regulating in such a way as to obtain a flame bright orange in colour Avoid a red flame with smoke in it or a white flame with an exaggerated excess of air Af...

Page 21: ...lug on the gas pressure switch 7 Open to the quantity considered necessary the flow regulator incorporated in the ignition flame valve s pilot Check that the combustion air regulation shutter is in the right position if necessary modify it by operating the adjustable screws of the regulating disk 8 Remove the protective cover from the disk on which are inserted the screws which regulate the gas and ...

Page 22: ...icroam meter with an adequate scale in series to one of the two UV photoelectric cell connection wires It is obviously necessary to respect the polarity and For the LFL control box the value of the cell current should be from 70 microamperes to 630 microamperes the value is shown on the wiring diagram 11 With the burner operating at a minimum ignition flame valve and safety valve open and servomoto...

Page 23: ...the special pushbutton and return the pressure switch regulator to a sufficient value in order to measure the air pressure existing during the pre ventilation phase 18 The pressure switches which control the gas pressure minimum and maximum have the job of stopping the burner functioning when the gas pressure is not within the values specified From the specific functions of the pressure switches it i...

Page 24: ...head move it backwards and forwards in such a way as to obtain an air flow suitable for the light oil delivery with the air regulation shutter in suction considerably open It the combustion head is pushed forwards which causes a reduction in the air passage between the head and the disk avoid closing it completely When regulating the combustion head proceed with centering it perfectly with respect ...

Page 25: ...not allow the burner to operate for a long time only a few minutes if the output exceeds the maximum al lowed for the boiler to avoid possible damage to it it would be timely to stop the burner immediately after having taken the two meter readings Correcting the value indicated by the meter If the meter measures the gas delivery at a pressure above 400 mm w c it is necessary to multiply the value ...

Page 26: ...ner first check that fuel arrives at the tank and then call the local service to repair the defect MAINTENANCE The burner does not require special maintenance but it is good practice to perform the following operations at the end of the heating season 1 Remove and wash thoroughly with solvents petrol trichloroethylene oil the filters the nozzle the turbulator disk and the ignition electrodes Avoid c...

Page 27: ...t supply for ignition if the flow feed device E is set at its minimum position Therefore it is essential to open the maximum flow rate control device E sufficien tly to ensure ignition Setting the initial rapid release trip To set the initial rapid release unscrew the protection cap F and use the back of this cap as a tool to turn pin G Turning clockwise decreases the gas flow turning counter clockwis...

Page 28: ...open position while the pump and magnetic valve remain powered When the unit receives the signal to close or if power supply is cut off the pump shuts down the magnetic valve opens decompressing the chamber above the piston The plate is closed both by the return spring and by gas pressure The flow rate for this valve is calculated to ensure full closure in less than one second This type of valve ca...

Page 29: ...opening and closing The VE4000B1 valves are Class A solenoid valves normally closed They may be used as ON OFF valves in the supply trains with Natural Gas Manufactured Gas or GPL on burners or combustion plants They are provided with M I and CE Approval for EN 161 M I and CE Approval for EN 161 ADJUSTMENT For models VE 4000B1 see fig 1 Adjustment to the flow Remove the cover from the upper section ...

Page 30: ...ing Principle feed valve s B Insertion and disinsertion lever Motor connection camshaft Position 1 Disinsertion Position 2 Insertion To modify the regulation of the cams utilized operate the respective red rings A Z M V By pushing with enough force in the direction desired each red ring will rotate with respect to the reference scale The index of the red ring indicates on the respective reference ...

Page 31: ...e end of the tolerated post combustion period The tests will end only at the end of the pre ventilation time of the next start up The validity of working of the flame control circuit is checked each time the burner starts up The fuel valve control contacts are checked for wear during the post ventilation time A built in fuse in the appliance protects the control contacts from any overloads that may...

Page 32: ...sition M Motor fan or burner NTC NTC resistor QRA UV probe R Thermostat or pressure probe RV Fuel valve with continuous regulation S Fuse SA Air damper servomotor SB Safety limiter temperature pressure etc SM Programmer synchronous motor v In the case of servomotor auxiliary contact for con sensus for fuel valve depending on air damper posi tion V Flame signal amplifier W Thermostat or safety press...

Page 33: ...consensus at power regulator or at valve on terminal 20 18 t6 Post ventilation time with M2 3 t7 Time between consensus for start up and voltage at terminal 7 start delay for fan motor M2 72 t8 Start up duration without t11 and t12 3 t9 Second safety time for burners that use pilot burners 12 t10 Time from start up to beginning of air pressure control without air damper travel time t11 Air damper ...

Page 34: ... limit switch z of the air damper servo motor During the probe test and false flame test the flame supervision test is also powered terminals 22 23 and 22 24 Safety standards In association with the use of QRA earthing of terminal 22 is compulsory The power cables must conform to existing national and local standards LFL1 is a safety device and it is therefore forbidden to open it tamper with it or ...

Page 35: ... lack of pressure from this moment onwards will cause a lock out stop Lock out stop because of flame detection circuit malfunction Start up sequence stops because the position signal for low flame was not sent to terminal 8 by auxi liary switch m Terminals 6 7 and 15 remain powered until the fault is eliminated 1 Lock out stop due to lack of flame signal at the end of the first safety time 2 Lock out ...

Page 36: ...ing operation During the second verification stage this pressure must remain constant Should it drop this means that the burner on the furnace side has a blow by fault when closing Therefore the DW pressure switch operates and the tightness control equipment prevents burner start up and stops in bloc ked state red pilot lamp lit If second stage verification is positive the LDU 11 equipment closes th...

Page 37: ...urner operation consent t20 22 5s Return of programmer to rest position fresh verification is enabled AL remote alarm signalling AR main relay with ar contacts AS equipment fuse BR blocking relay with ar contacts DW outer pressure switch tightness control EK unblocking button GP outer pressure switch for mains gas pressure HR auxiliary relay with ar contacts L1 equipment trouble signalling lamp SK ...

Page 38: ...room s area and a minimum of 0 5 m2 At least one third of the entire surface of these inlets must be located in the lower part of the external wall flush with the floor 3 Requirements for liquid gas plant to ensure correct operation and safety Natural gasification from cylinder unit or tank can only be used for low power plant Supply capacity at gaseous stage depending on tank dimensions and minimum ...

Page 39: ...39 61 0006080103 ed2005 10 GENERAL DIAGRAM FOR TWO STAGE L P G PRESSURE REDUCTION FOR BURNER OR BOILER 8721 2GB pcx N 8721 2 Rev 21 03 1990 ...

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