This program consists of three 12-week terms, 24 weeks of training and 12 weeks of ICE Certification review and EPA examination preparation, for a total of 36 semester hours. Completion of all three terms with an accumulated grade point average of 2.0, C , or better and passing the EPA Core Section and at least the Type I and II Section, entitles the student to a diploma in Heating, Ventilation, Air Conditioning and Refrigeration (HVAC/R). Students are expected to pursue the complete curriculum in the sequence offered.
The HVAC/R program is designed for persons with or without previous training or experience in any of the climate control disciplines. The objective of the program is to provide the student with at least the minimum of entry-level skills with which he or she can obtain employment in the climate control industry.
The graduate will be qualified for employment as equipment installed service technician, apartment maintenance technician, sales representative, refrigeration mechanic, independent contractor, commercial maintenance controller, field service representative, air conditioning specialist, equipment and parts salesperson, company service manager, residential air conditioning and heating technician, and other related positions.
The program includes a phase in computerized diagnostics covering residential and some commercial refrigeration, gas heat, heat pumps, and air conditioning. The mathematics required in the program is limited to that needed to take the Environmental Protection Agency (EPA) Refrigerant Transition and Recovery Certification Test.
Classes are as follows:
FIRST TERM
HVA 101 Mechanical, HVL 101 M & E Theory Lab 12 Weeks, 240 Clock Hours
Work is divided equally between lecture and lab. Students will learn the theory, through lecture and lab experience. The following areas are covered: problem-solving in English units (BTUs); refrigeration theory of compression cycle; heat flow; evaporation and condensation; Ohm’s Law; D/C and A/C electrical circuits; operation of reciprocating and centrifugal compressors; automatic refrigerant controls; use of recovery and recyclers and tanks; and dry evaporators. The student will complete numerous practical labs, including the following: making and repairing tube connections; identification of pipe fittings; assembling devices and tools; operation and testing of valves; operation of compressors; testing for leaks; installing gauges; evacuating a system charging per EPA standards.
Students will also study theory that includes: electron theory, volts, ohms, circuits, electrical instruments, magnetism, solenoids, relays, electric and induction motors, capacitors, and variable speed motors. Practical laboratory tasks include: tracing electrical circuits; dismantling and assembling a single-phase motor; thermostat adjustments; checking relays and solenoid valves; testing of electric hermetic, capacitor-start, and capacitor run motors; replacing relays and overloads; replacing a condenser fan motor; evaporator fan motor, and checking of circuits and electrical connections.
SECOND TERM
HVA 102 AC & Refrigeration Theory
HVL 102 AC & Refrigeration Lab 12 Weeks, 240 Clock Hours
This term includes theory relevant lab work in the following areas: flooded evaporators, properties of air, humidity, psychometric chart, comfort coolers, self-contained comfort coolers, residential central systems, chilled water systems, evaporators, refrigerant controls, condensers, electrical circuits, electrical controls, heat loads and air distribution. Laboratory tasks in the following are performed: measurement of relative humidity and dew point; measurement of pressure drop through a filter; installation and operating of air flow controls; installation of a window type comfort cooler, self-contained comfort cooler and residential central electrical comfort cooling system; and calculation of the comfort cooling heat load for an assigned space.
Theory and lab applications will continue to include the following: commercial systems and applications; compressors; condensers and receivers; water valves; refrigerant controls; thermostatic expansion valves; evaporation; air cooling and liquid cooling evaporators; suction; liquid lines and manifolds; constant pressure valves; solenoid valves; defrost systems; motors and fans; electrical circuits; heat loads and system capacities. Laboratory tasks for this term will include: removal, testing, installation of a thermostatic expansion valve; installation of electrical circuit of a multiple cabinet system; installation of dryers and sight glasses; evacuate systems; installation of a suction line filter and charge systems with R-22 and R-134A.
THIRD TERM
HVA 103 Furnaces and Heat Pump Theory
HVL 103 Furnaces Lab
HVA 301 Certification Review and Exam Preparation 12 weeks, 240 Clock Hours
This term’s theory includes lab/lecture in the following areas: basic heat pump principles, basic cycle, component parts, temperature controls, defrost controls, high and low pressure switches, low ambient controls, air to air, liquid to air, air to liquid, temperature measurement, pressure measurement, start-up check out and operation, air system problems, analysis, sizing, installation, reversing valves, checking electrical controls, defrost initiation, defrost termination, expansion devices, and electronic air cleaners. Laboratory tasks for this term will include: installing an electric air cleaner, installing control and power wiring systems; locating, operating, and repairing or replacing control components and locating, operation and repairing load components.
Theory in lab and lab lectures continues to cover the following areas: fuel; gas and oil burners; warm air; hydraulic and electric heat systems; thermostats; electrical circuits; heat loads; filtration; air volumes; duct design and humidifiers. Accompanying lab/tasks include: operation and adjustment of atmospheric burners; removal, cleaning and replacement of oil burner nozzles; removal, testing and replacement of an oil burner motor; removal, testing and replacement of an oil burner safety shutoff; installation of a power humidifier in a duct system; balancing of air flow in a forced air system; installation and operation of electrical heating furnace and rooftop heating systems; troubleshooting gas and oil burner systems; calculating heating load for an assigned space; discussion of checking, operating and adjusting of warm air heating systems; resistance heating systems; removal and installation of gas pilot light.
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