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SYSTEMA S.p.A.Fig.50Fig.51Fig.52AIRTIGHT GAS-FIRED RADIANT TUBES INFRAELECTRICAL CABLING “FCM-B”- EXPLANATIONSA - A1 - A2 - A3 - A4) BRAHMA ELECTRONIC SWITCH BOARD FCM 32The Brahma FC M32C/FC E32C electronic switch board controls the working ofthe burner fitted with remote ignition A2 (fig.49), self-diagnosis of the air pressureswitch, manual resetting in case of failure.The FC M32C/FC E32C switch board works in the standard version with only oneelectrode for ignition and flame detection A3 (fig.49) connection T2 (fig.50), andwith 2 electrodes for ignition and flame detection, connection T1 (fig.50) in the notstandard version.The FC M32C/FC E32C switch board is supplied with a pre-pressed circuit withconnection clamps type MOLEX; they are female clamps and are used for theconnection to the electrical cabling of FCM-B.CONNECTION TO THE ELECTRODES AND THE REMOTE IGNITION DEVICE.The remote ignition device (and eventual detection electroed) is connected to thepre-pressed circuit with a plug PJ4 (fig.49) which is connected to the plug J4(fig.49). The connection T1 (fig.50), foresees the working of the combustion torchwith 2 electrodes, one for the ignition and one for the detection.The connection T2 (fig.50), foresees the working of the combustion torch withone single electrode both for ignition and detection.The diagram enclosed shows the connection between the electrodes and thepre-pressed circuit; the lines on the plugs are numbered like shown in the drawinghere enclosed.1) Earthing line for the torch2) Phase line for the ignition device3) Neutral line for the ignition device4) Detection line with yellow/green cable of the ignition device for the connetionT2 = single electrodeDetection line with protected cable for the connection T1 = double electrode5) Earthing line for ignition device for connection T1B - B1) PROTECTION BOXThe electrical cabling and all electrical components are lodged inside of a airtightbox B (fig.49) in PVC which is fixed ontho the burner box. On the closing coverB1 (fig.49) are fitted two cable presses used for the electrical connections of thefume suction fan and he controls of the wall control panel. Moreover there aretwo contol lights, one GREEN is the working control light and one RED which isthe failure control light. The reset button is placed onto the red control light button.C - C1 - C2 - J6 - PJ6) AIR PRESSURE SWITCHOn the rear part of the PVC box there is a differential air pressure switch C(fig.49) with the tube silicone pipes C1 (fig.49) underpressure pipe and C2(fig.49) pressure pipe for the connection of the cables to the combustion group ofthe burner.The electrical connections to the circuit board are done by means of a plug PJ6(fig.49) and of a plug placed onto the circuit board J6 (fig.49) like shown in theenclosed drawing.The plugs are numbered with letters (fig.51):10) N.C. contact11) common contact12) N.O. contactD - J5 - PJ5) GAS VALVEThe electrical feeding of the gas valve is done by means of the plug J5 (fig.49)placed onto the circuit board and of the flying plug PJ5 (fig.49) connected to thevalve. The plugs are numbered with letters (fig.52):6) Earthing line7) Clamp not connected8) Valve phase line9) Valve neutral lineRev. 18GB061048