Pilot lights are mounted on the control box to indicate that either a function of the heater is operating or a failure condition is present. The most commonly specified pilot lights functions are: power on, heating on, no airflow, overheating, stages on. The pilot lights' functions must be specified when ordering.
The D21-T electronic controller has been designed to take full advantage of our patented Air-Flow Sensor which modulates the heater’s capacity according to the quantity of air flowing through the heater by responding to the radiant heat of the elements even at very low CFMs. With...Learn More
The automatic reset thermal cut-out is a fixed temperature disc type safety device that opens the control circuit when it’s set point is reached. It automatically resets and returns the heater to operating conditions when the overheating conditions have disappeared.Learn More
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