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Unit#17 cw-1

Horizontales
The pressure produced by the ignition of an air-fuel mixture against the normal pressure of a gas flow.
A device that produces electricity when two different metals that are twisted together are heated.
A safety control that determines when a pilot light is burning.
A metal plate positioned in the opening of a flue that allows atmospheric pressure to balance the pressure at the bottom of a chimney to control the amount of airflow up through the combustion chamber and flue.
A secondary heat exchanger that reduces the temperature of the flue gas below the dewpoint temperature.
A box made of sheet metal that runs the width of a clamshell heat exchanger to trap flue gases and then travels up a flue with dilution air.
A device located at burners that uses a small piece of silicon nitride, which glows when electric current passes through it, to produce extremely high temperatures.
A type of burner that uses natural or LP gas and contains a fan or blower.
The area in a furnace where the burner and controls are located.
A control that monitors the operation of a furnace.
An electromechanical combustion safety control device that detects the pressure in a flue created by the flow of air from a draft induction fan.
Verticales
1. The heat-producing component of a combustion furnace. 2. The heat-producing component of a combustion boiler.
A motor-to-wheel connection that has a blower wheel mounted directly on a motor shaft.
A burner that uses only the amount of air necessary for complete combustion in a furnace.
A major piece of equipment that makes up a furnace.