Nu-Way BG400 Installation And Maintenance Instruction
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GENERAL INSTRUCTIONSAdjustment of burnerThe burner is from the factory pre-setto an average value that must then beadjusted to the boiler in question.All burner adjustments must be madein accordance with boiler manu-facturersinstructions. These must include thechecking of lue gas temperatures,average water temperature and CO2or O2 concentration.General instructionsThe installation of the gas burnermust be carried out in accordancewith current regulations and standards.The installers of gas burners shouldtherefore be acquainted with all regu-lations and ensure that the installationcomplies with the requirements. Theinstallation, mounting and adjustmentshould be made with the greatestcare and only the correct gas shouldbe used.Operating instructionsThe operating instructions accom-panying the burner should be leftin a prominent position in the boilerroom.InstructionsThe user should be thoroughlyinstructed in the function of the gasburner and the whole installation.The supplier must instruct the user.Inspection and maintenanceDaily inspection is advisable.Start upAfter the burner has been itted tothe boiler and the electric connection,the leakage control, the venting andthe electric function test have beencarried out, the burner will be readyfor start-up.Howerer, study the sections dealingwith adjustments of multi-bloc, com-bustion air and combustion head.Open the ball valve and switch on themain switch. If the burner starts theactual adjustment can be made.Adjustment of burner headThe burner is equipped with an adjust-ment device changing the position ofthe brake plate in the burner head. Thisis used to adjust the correct pressuredrop over the combustion device inorder to obtain a good pulsation freecombustion.Which position to use depends oninput and overpressure in the boiler.172 305 28 07-01A general rule is that the lower capacitythe smaller the opening betweenbrake plate and combustion device.Commissioning of installationControl of the combustion. The com-bustion quality is checked by meansof a lue gas analysis device. Adjustthe burner to appr. 20% excess airin accordance with the table. Checkthe lue gas temperature. Calculatethe eficiency. Check also the actualgas volume on the gas meter so thatthe correct input is achieved.ServiceService should only be carried outby qualiied personnel. Replacementparts should be of the same make andapproved by the same authorities asthe original. If the burner is convertedto ire another gas quality it must bere-commissioned. If town gas is to beired the combustion head must beconverted and the gas train adjustedto suit (e.g.a larger gas armature or adifferent spring in the governor maybe required).Gas quality CO2%lambda 1,202% max. CO2%Natural gas 10,0 3,5 11,9LPG 11,5 3,5 13,9 |
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