Electric Duct Heater Scr Control

Scr pictured solid state relays are used to provide continuous modulation.

Electric duct heater scr control.

Heavy gage g60 construction with hinged access cover. An electronic step controller provides electronic sequencing control of an electric duct heater up to 12 steps. Price electric coils are factory mounted etl listed to meet electrical safety standards and comply with dual designation csa 236 ul 1995. This gives smooth infinitely variable application of power to the heaters.

Scr power controllers are designed for an accurate and cost effective way to modulate electric heat. Electric reheat coils are an available accessory for use with price single duct and fan powered terminal units. Upon restoration of power the step sequence resumes. Scr power control in depth.

Standalone coils supplied as duct heaters are certified in compliance with ul 1996. Fuses to protect each circuit in any heater drawing more than 48 amps. Useful for electric reheat and supplemental electric duct heaters. Automatic reset thermal safety switch for primary over temperature protection.

A transformer with any overcurrent protection required by ul or the nec to supply the internal control circuit of 120 volts per heater with a step controller for vernier control and 24 volts for all other heaters with scr control. Our heaters and controls range from standard duct heaters to the most sophisticated custom designed comprehensive systems. Capacity and stages are dependent on voltage phase and heater dimensions. Viconics r820 scr power controller has been designed for safe and reliable control of electric heat loads.

This duct heater features. Indeeco s attention to detail and rigorous testing give worldwide customers premium products that they receive quickly and at a fair price. Phase angle fired zero voltage switched and on off control. Power and control terminal boards.

When interruption of power occurs all stages cycle off. Since the scr is solid state it. A silicon controlled rectifier scr is a solid state switching device which can provide fast infinitely variable proportional control of electric power. Their applications vary from a partial or auxiliary nature to being the major or principal heat source in a building.

Thermolec electric duct heaters are designed for use in all forced air commercial and industrial hvac systems. These controls proportionally turn on a percentage of each power line half cycle.