Nu-Way MDFL 3300 Installation And Maintenance Manual

Nu-Way MDFL 3300 Installation And Maintenance Manual Manual pdf 21 page image

CONTROL PANELOn MDFL 3300 and MDFL 4000 burners the enclosure mounted on the left side of the burner servesmainly as a housing for electrical connections, although it also contains the ignition transformers andcarries the burner On/Off switch, the Hand/Auto switch, and the Inching switch required bymodulating burners.If supplied, the separate free-standing panel contains the programming burner controller, contactorsand other items. This enclosure carries an amber light which indicates “BURNER ON”, and a redlight which is illuminated when the burner stops as a result of “EXCESSTEMPERATURE/PRESSURE” in the appliance.Also located on this enclosure are the fuel selector switch and two additional neon lights. The amberlight is illuminated when “OIL” is the chosen fuel and the red light indicates that “GAS” has beenselected.Burner ControllerThe burner controller, together with the flame monitor (see below), provide a safe light-up andshutdown sequence for the burner.The Siemens LFL1.333 (shown on page 21) is fitted as standard.The burners are fitted with a continuous flame supervision system which uses an ultraviolet (UV) celland amplifier (incorporated within the burner controller) to detect the presence of the flame.Modulating ControllerThe Siemens RWF 40 (see page 35) is fitted as standard to all fully modulating burners.MDFL 3300 & MDFL 4000 Issue 2 08/08 Page 20