User manual BALTUR BTL 4 SCHEMA

[. . . ] NOTE: this declaration is not valid with regard to EC or UNI Standards for gas burners or the gas part of duel-fuel burners (gas/light oil or gas/heavy oil) when such burners have been ordered in non-compliance with the EC Standard or Italian UNI Standard because they are to be used for special purposes not provided for in the above-mentioned standards. " Electrical connections - Descriptions of operations - Natural gas starting up and regulation Air regulation on the combustion head - Maintenance - Use of the burner . 1) 4-pole connector (only for P version) 4) Control box 5) Combustion head 6) Insulating gasket 7) Burner mounting flange 8) Motor 9) Air pressure switch 10) Disk head regulating screw 11) Gas electrovalve The burner is equipped with a mounting flange which slips on the burner head. When applying the burner to the boiler, it is necessary to correctly position the flange so that the burner head enters the furnace to the extent specified by the boiler manufacture. [. . . ] It is also necessary to check if the CO2 and CO values are adequate (CO2 max. 9) Control the efficiency of the safety devices: the "shut down" (by detaching the ionisation electrode cable), the air pressure switch, the gas pressure switch, the gas pressure switch and the thermostats). The pressure switch is self-controlled and trefore it must close the contact, which is foreseen to be closed at rest, (fan stops and consequently there is an absence of air pressure in the burner); if it does not, the control box will not be inserted (the burner remains at as standstill). It must be specified that if the contact is not closed during working, the control box will carry out its cycle, but the ignition transformer will not be inserted and the gas valves will not open. consequently , the burner will go to shut down. Check that the air pressure switch functions properly with burner operating at 1st flame only, increase the regulating value until it reaches intervention point and the burner should go to shut down. To ublock the burner, press the special pushbutton and return the pressure switch regulator to a sufficient value in order to measure the air pressure existing during the pre-ventilation phase. (see BT9481/1 and BT9485/2) The combustion head is equipped with a regulating device which closes and opens the air passage between the disk and the head. By closing the passage it's possible to achieve high pressure upstream the disk for low inputs as well. High velocity and turbulence ensure a better penetration in the fuel, an optimum mixture and good flame stability. It might be necessary to have high air pressure upstream the disk in order to avoid flame pulsation and it's considered practically indispensable when the burner is operating with a pressurised furnace and/or thermal load. The versions B02 and B01 S50 are employed with liquid gas (LPG) The monobloc DUNGS Model MB-ZRDLE is made up of: a) Minimum gas pressure switch (3) and maximum gas pressure (12) b) Gas filter (6) c) Pressure regulator (stabilizer) (2) (only for version B01) d) Safety valve (incorporated in the pressure regulator) which opens and closes rapidly (4) e) Principle valve with two positions (1st flame and 2nd flame) which opens slowly with an adjustable initial rapid release and rapid closing (8). Before proceeding with regulation, read the following: 1) It is possible to reach the gas filter (6) in order to clean it, by removing one of the two side closing plates. 2) The pressure stabilizer can be regulated from 40 to 200 mm. It can be reached by sliding the cover (2) to one side. Do not force against the end-ofthe-run position. Before starting up the burner, give the screw at least 15 turns towards the + sign. Around the screw are arrows with symbols which indicate the sense of rotation to increase the pressure (in a clockwise direction) and the sense of rotation to decrease pressure (in an anti-clockwise direction). The complete run of the regulator from the - position to the + position, and viceversa, is about FIVE turns. rotate in a clockwise direction to determine a reduction in delivery and in an anti-clockwise direction to increase it. After regulating the gas delivery for the 1st and 2nd flame, remember to tighten home the screw (1) to avoid the regulatormoving out of the position at which it has been set. ADJUSTTABLE OUTLET PRESSURE FROM THE STABILIZER (PA) mbar from 4 to 20 from 4 to 50 We think it would be useful to inform you on a few points regarding use of liquid propane gas (L. [. . . ] It is necessary to protect this pressurereducer whith a proper filter in order to avoid that any impurities, unexpectedly, reach the reducer thus endangering the correct working. It is impostant to point out that the usual filters do not have a cartridge (filter element) enough resistent to this pressure. We can recommend, as a suggestion, to use a common "steam filter" for it is provided with a filter element suitable to undergo very hight pressure, see the fig. Use a filter having at leat the same size as the diameter of the gas intake tube. [. . . ]