35ENFIXING THE BURNER TO THE BOILERThe burner must be applied to the boiler iron plate after having fixed the supplied stud bolts according to the drillingtemplate. It is advisable to electrically weld the stud bolts inside the plate so as to prevent them from being extractedjointly with the burner check nuts if the burner is dismantled.To insert the insulating flange, which must be placed between the burner and the boiler plate, dismantle the end partof the combustion head. To connect the burner to the boiler, the special nuts and relevant washers are supplied withthe burner. The burner is equipped with cylindrical combustion head; it is advisable to first fix the boiler plate, andthen the burner. An insulating protection having a minimum thickness of 10 mm must be placed between plate andboiler when the boiler port is not provided with thermal insulation.The boiler plate must be designed according to our drawings, with a minimum thickness of 10 mm. so as to preventpossible deformations. Before applying the burner to the boiler, the sliding flange must be arranged so as to allowthe burner head to penetrate in the combustion chamber by the amount required by the manufacturer.Once this operation has been finished, connect the burner to the gas pipes as explained in the following pages,based on the available type of gas supply (low pressure or mean pressure).ENGLISHFOR MODEL BGN 40 LXPressure transmission pipein combustion chamber Burner flangePressure detection pipeconnection nipple in combustion chamberPressure take-off incombustion chamber0002933641.tifMEASURING THE PRESSURE IN THE COMBUSTION CHAMBERIf the hole in the door is too small to allow the hose to pass and the door has no flame inspection window itwill be necessary to make a Ø 12 hole at the site of the 1/4" connection for the insertion of the pressure takeup hose in the combustion chamber (provided with the burner)Plate and refractorywall hole to be drilledto Ø 12N° 0002933641Rev. 13/11/2002