Burner Control Brahma VE 3.2-230VAC – The VE3.2 control box is suitable for forced draught gas burners for civil and industrial applications, with power up to 350KW and one flame level. According to TÜV Bayern, Monaco, the control is in compliance with the German regulation DIN 4788, part 3, for power up to 350KW. It also obtained the DIN-DVGW 89.09fBN approval, now expired and not renewable. The “Laboratorio di Macchine e Termotecnica del Centro Studi ed Esperienze” in Rome – Capannelle tested the VE3.2 control box for power up to 350KW, which obtained the certification no. 3704/80/77/12 and the approval of the Ministry of the Interior for fire prevention (circulars no.68 and no.42).
A transformer having one primary and two secondary windings supplies the electronic flame detection circuit at low voltage, and the detection probe with about 300V. This supply system offers the big advantage of having constant ionization values, even if the network is a live-live installation. To check the efficiency of the flame detection circuit, you have to proceed as follows: connect a low impedance ammeter, as shown in Fig.1; the R1 … Rn resistors in series have to give the total resistance value of 200M (e.g. 20 resistors of 10M 1/4W 5%). If the control box is supplied with 220V, the measured current value is about 0,5+0,6A DC, which causes the flame relay to switch on. Lower current values indicate that the circuit is damaged or only partially efficient.
