Lennox 21W14

101029-01 CONTROL-IGNITION

Controls of all kinds are integral parts of restaurant equipment operation. A control is a switch or other device by which a machine is regulated. A control may be manual or automatically operated. An electro-mechanical control typically consists of multiple relays, timers, and/or counters wired together on an enclosure panel. Electro-mechanical control is also referred to simply as "Relay Control", which is a more accurate term since solid state electronic relays, timers, and counters are standard components. Contactors, motor and compressor starters, valves, thermostats, and other output devices are used to turn on/off motors, indicator lights, heating elements, and other components used in the equipment.

An ignitor is a device used to initiate combustion - the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of a chemical state. The release of heat can also result in the production of light in the form of either glowing or a flame. A gas lighter is a firestarting mechanism used to ignite gas stoves which do not have automatic ignition systems. It relies on a physical phenomenon called the piezoelectric effect to generate an electric spark, which ignites the combustible gas from the stove burner.