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SYSTEMA S.p.A. VALVE FOR PILOT FLAME DEVICES (K21, K28, K40, K55, K28V, K40V, K55V) Airtight gas convectors “EUROSIT” TYPE Draw 25a “CATOBA” TYPE LEGEND 1) Control dial 2) Pilot frame adjustment screw 3) Minimum flow adjustment screw 4) Outlet pressure tap (at nozzle) 5) Inlet pressure tap (from mains) 6) Pilot flame supply line pipe 7) Thermocouple 8) Magnet unit 9) Pressure regulator - stabilizer 10) Gas inlet connector thread 11) Main burner supply line pipe 12) Piezoelectric button 13) Sealing connector 14) Nozzle-holder sleeve 15) Nozzler 16) Pressure adjustment screw Draw 25b SOLENOID VALVE FOR ELECTRONIC DEVICES (K21E, K28E, K40E, K55E, K28VE, K40VE, K55VE, K21FE, K28FE, K40FE, K55FE) “WHITE ROGERS” TYPE Draw 25c “BRAHMA GC8ROTC” TYPE Draw 25d LEGEND 1) OUTLET PRESSURE TAP (at nozzle) 2) INLET PRESSURE TAP (from mains) 3) PRESSURE REGULATOR - STABILIZER 4) MAIN BURNER SUPPLY LINE PIPE 5) SEALING CONNECTOR 6) NOZZLE-HOLDER SLEEVE 7) NOZZLE 8) BRASS CLOSING PLUG Rev. 05IT0112-1 28
Airtight gas convectors SYSTEMA S.p.A. 3.6 Transformations for various types of gas supplies for pilot flame-type devices (Mod. K21, K28, K40, K55, K28V, K40V, K55V) Transformation must be performed only by qualified professionals in complete respect of the safety regulations in force. The Manufacturer declines all liability for erroneous installation or the inappropriate or incorrect transformation or use of the device. Transformation from Methane gas to LPG. gas 1) Close the gas supply line and disconnect the electrical power supply. 2) Remove the cast-iron front panel by unscrewing the four M8 screws at the corners. 3) Remove the gas supply line pipe from the main burner (11) using the sealing connector (13) (See Draw ). 4) Remove the nozzle-holder (14) and the nozzle (15), and replace the nozzle with the one contained in the transformation kit after first checking to make sure that the diameter corresponds to the diameter listed on the rating plate. 5) Disable the valve's pressure regulator by screwing the screw (9) clockwise (+) all the way down. 6) Remove the gas pipe (6) from the pilot, remove the pilot nozzle and replace it with the one contained in the transformation kit. 7) Re-close the cast-iron front panel, making sure that the fiberglass sealing liner remains in place. 8) Check for leakage of gas along the threaded joints. 9) Start the device, and make sure that the supply pressure to the burner is 29 mbar (*) using the pressure tap (5). 10) Indicate on the rating plate the type of gas transformation performed on the device. (*) For LPG gas (Butane-Propane), a “I” stage pressure reducer must be installed near the tank in order to reduce the pressure to 1.5 bar; a “II” stage pressure reducer must be installed on the main external supply line in order to reduce the pressure to 29mbar (0.029 bar). Transformation from LPG gas to Methane gas 1) Close the gas supply line and disconnect the electrical power supply. 2) Remove the cast-iron front panel by unscrewing the four M8 screws at the corners. 3) Remove the gas supply line pipe from the main burner (11) using the sealing connector (13) (See Draw ). 4) Remove the nozzle-holder (14) and the nozzle (15), and replace the nozzle with the one contained in the transformation kit after first checking to make sure that the diameter corresponds to the diameter listed on the rating plate. 5) Remove the gas pipe (6) from the pilot, remove the pilot nozzle and replace it with the one contained in the transformation kit. 6) Re-close the cast-iron front panel, making sure that the fiberglass sealing liner remains in place. 7) Check for leakage of gas along the threaded joints. 8) With a 20 mbar supply pressure, use the adjustment screw (9) to bring burner pressure (4) to its nominal rating plate value. Screwing in the clockwise direction increases the pressure, while unscrewing counter-clockwise decreases the pressure. 9) Indicate on the rating plate the type of gas transformation performed on the device. 29 Rev. 05IT0112-1
Page 1 and 2: AIRTIGHT GAS CONVECTORS Pilot flame
Page 3 and 4: Airtight gas convectors Summary SYS
Page 5 and 6: Airtight gas convectors 1 GENERAL R
Page 7 and 8: Airtight gas convectors CONTROL UNI
Page 9 and 10: Airtight gas convectors 2.6 Electro
Page 11 and 12: Airtight gas convectors 2.8 Explode
Page 13 and 14: Airtight gas convectors SYSTEMA S.p
Page 17 and 18: Airtight gas convectors Series E wi
Page 19 and 20: Airtight gas convectors Series FE w
Page 25 and 26: Airtight gas convectors 3.4 Specifi
Page 27: Airtight gas convectors 3.5 Gas lin
Page 37 and 38: Airtight gas convectors 4 INSTRUCTI
Page 39 and 40: Airtight gas convectors 5 PUTTING T
Page 43: Airtight gas convectors SYSTEMA S.p

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