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Summary of Contents for Nu-Way BG400
- Page 1 178 030 73 Providing sustainable energy solutions worldwide Installation- and maintenance instruction BG400...
- Page 3 DESCRIPTION Components 8. Air dampe 16. Motor 1. Cover,inspection glass 9. Air intake 17. Ignition electrode 2. Air pressure switch 10. Gas pressure switch 18. Transformer 3. Air adjustment 11. Ball valve 19. Ionization electrode 4. Inner assembly adjustment 12. Control box 20.
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Page 4: Technical Data
TECHNICAL DATA Type designation BG 400 Dimensions Length of burner tube Measure A Standard The above dimensions are max. measurements. Depending on the compo- nents used, the measurements may vary. Output range Type Capacity Gas volume at a min. Gas volume at a max Max. - Page 5 TECHNICAL DATA Dimensions of lange ø140 172 215 30 07-01...
- Page 6 MOUNTING ON THE BOILER Remove the combustion unit from the Removal of fan house unit from Installation example burner. Fit the enclosed lange and burner. Connect the gas to the burner by gasket to the boiler. If new ixing holes Loosen the screws. Swing out the fan means of the ball valve.
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Page 7: Electric Equipment
ELECTRIC EQUIPMENT Gas burner control: LGB21/LMG21/LME11/LME21 Wiring diagram If there is no plug-in contact (X2) on the boiler, connect to the contact enclosed. In case the twin thermostat is in series on incoming phase L1, a loop between the terminals T1 and T2 is necessary. - Page 8 MEASURES AND CHECKS BEFORE START-UP, 1-STAGE BURNER General rules Care should be taken by the installer to ensure that no electrical cables or fuel/gas pipes are trapped or damaged during installation or service/mainte- nance. Inner assembly Ensure that the ignition and ionisation electrodes are correctly adjusted.
- Page 9 MEASURES AND CHECKS BEFORE START-UP INNER ASSEMBLY Town gas INNER ASSEMBLY Natural gas, LPG Natural gas INNER ASSEMBLY Biogas (UV-detector) 172 205 78 07-01...
- Page 10 DETERMINATION OF GAS VOLUME FOR THE INSTALLATION Speciications on natural gas, town Net caloriic value gas and bio gas vary. For more exact Gas quality kWh/Nm kJ/Nm kcal/Nm information please contact the gas Natural gas 10,3 37 144 8 865 distributor. Propane 26,0 93 647 22 350...
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Page 11: General Instructions
GENERAL INSTRUCTIONS Adjustment of burner A general rule is that the lower capacity Service the smaller the opening between The burner is from the factory pre-set Service should only be carried out by qualiied personnel. Replacement brake plate and combustion device. to an average value that must then be adjusted to the boiler in question. - Page 12 GENERAL INSTRUCTIONS, 1-STAGE BURNER Air adjustment Loosen the stop screw and turn the knob along the scale to the desired position and tighten the screw. Check the air adjustment by making a lue gas analysis. Adjustment of brake plate Loosen the screw on the adjust- ment device. - To reduce the opening: turn the knob to the left.
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Page 13: General Instruction
GENERAL INSTRUCTION Flame monitoring and measure- Gas control Connection to terminal Min. ionisation ment of ionisation current in gas control current required The burner is monitored according 2 µ A to the ionisation principle. Check the 10 µ A ionisation current on start-up and on each service call. - Page 14 FINAL TEST OF THE INSTALLATION – Make repeated start attempts to Fault location, functional troubles ensure that the adjustments Trouble free operation is dependent on three factors: electricity, gas and air function. supply. Should there be any changes – Close the ball valve during in the ratio between these three factors operation to check that the gas there is a risk of break downs.
- Page 15 FAULT LOCATION GUIDE Gas burner To facilitate fault location we have drawn up a scheme The basis for trouble free operation can only be ensured by the correct combined effect of the three factors: showing the most frequent faults in a gas burner instal- electricity, gas low and combustion air. Should any of lation and the remedies. these factors change troubles may arise.
- Page 16 REMEDY CAUSE The cable shoes have bad contact Improve the contact The ignition cables are damaged Replace The ignition transformer is damaged, no voltage Replace the transformer on the secondary side The ignition cable and the ionisation cable have Change been transposed.
- Page 17 REMEDY CAUSE Voltage lower than 185 V Contact the electricity authorities. The ignition electrodes are disturbing the Adjust the ignition electrodes, repole the ignition ionisation current transformer if necessary. Bad earthing Arrange for proper earthing. Phase and neutral transposed See wiring diagram and change. The burner locks out during pre-purge Air pressure switch defective or incorrectly adjusted The starting load is not correctly adjusted...
- Page 18 REMEDY CAUSE The ambient temperature of the gas relay is too high Heat insulate, max. 60° C. The ignition spark is too weak Check the transformer Bad combustion Bad draught conditions Check the chimney The lue gas temperature is too high The boiler is overloaded. Reduce the quantity of gas. The CO -content is too low Check the boiler with regard to leaks.
- Page 20 170 080 06 10-01...
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