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on a letter to take you to the list of terms and technical information
starting with that letter.
D.C.(Direct Current)
A steady flow of electrical current in one direction only.
Diastat
Part of a thermostat consisting of a sensing bulb, hollow capillary tube and a bellows. This sealed system is filled with a fluid which expands when heated to actuate electrical contacts.
Differential
The difference between the on and off temperatures of an operating thermostat.
Direct Spark Ignition
Two high voltage electrodes create a continuous spark to ignite a main burner.
Disposer
Master disposer replacement work sheet.
D.P. (Double Pole)
A switch device that opens or closes connections in two conductors of the same circuit.
D.P.D.T (Double Pole, Double Throw)
A switch that opens or closes connections alternately in two conductors of the same circuit.D.P.S.T. (Double Pole, Single Throw)
A switch that opens or closes connections at one position in two conductors of the same circuit.
ECO
Energy Cut-Off Device
