Oil burner control for vaporising burner - has separately controlled heating circuits for normal and auxiliary oil flows

摘要

The oil burner control is for vaporising burners, fed with oil at about 320 deg.C. There are two heating circuits with separate controllers (1, 2), one controlling heating capacity commensurate with normal oil flow and the other for supplementary capacity. When, after switching on, the oil first reaches working temp. the auxiliary unit switch (A1) on breaking makes an auxiliary relay (d1) circuit, causing closure of the burner unit (9) switch (d1/1) and a holding switch (d1/2). Rheostats (D1, D2) allow heating current adjustment for varying oil flows.