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HVAC Engineering Technology (HET)
Engineering, Math & Physical Sciences


The following course information is effective for the Fall 2010 term.

Subj CatNoCourse TitleUnits   
HET 219HVACR Electricity III4 units  

This course covers advanced AC and DC circuitry, the laws of electricity, wiring of HVACR equipment, and safety procedures with an emphasis placed on sustainable energy sources. Through lectures, demonstrations, and lab experiences, students will learn about various types of residential and commercial heating and air-conditioning, commercial refrigeration and electrical service, installation, preventive maintenance techniques, and direct digital controls. The operational characteristics of various types of electric controls including thermostats, defrost controls, relays, and contactors will be covered, as well as capacitors, power distribution, motors, system malfunction diagnosis, corrective procedures, and protective devices. Students will be introduced to part-winding start, Wye and Delta wound transformers, programmable controllers, Electronically Commutated motors (ECM), Variable Frequency Drive motors (VFD), National Electrical Code, the use of meters, schematics, wiring diagrams, electrical troubleshooting, electrical service procedures, and electrical test equipment.
NOTE: Student will be required to purchase basic hand tools used in this and other HVACR courses.

Prerequisite: HET 119 and MTH 114 or higher or appropriate score on Math Placement test or Math ACT score of 17 or higher; and minimum APT score of 122 OR minimum CELSA score of 50; or Language Proficiency; or Consent of Instructor

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College of Lake County, 19351 West Washington Street, Grayslake, IL 60030-1198    (847) 543-2000