Air Condit & Refrigeration

The student will describe the fundamentals of refrigeration and refrigeration theory which will include various condensers, evaporators, compressors, and related components. The student will learn basic service and installation practices. They will learn and demonstrate understanding of system optional pressures, temperatures and conditions.

The student will analyze and service air conditioning and refrigeration equipment with emphasis on the electrical components used in air conditioning and refrigeration equipment. He or she will be able to describe the operation of electrical components and troubleshoot these components in the system. Basic tools are recommended.

The student will identify and describe the design, construction, and controls of home-type refrigeration units. He or she will test and service these units, with emphasis on re-operation of motor compressors, cabinet care and handling, design, and airflow. Basic tools are recommended.

The student will describe the various systems components and their uses. He or she will explain the function of flow controls, defrost systems, receivers, water and electric valves, and related controls and will apply this information to analyze and service commercial refrigeration systems which include food lockers and over-the-road equipment. This will include complete installation procedures and insulation of fixtures. Basic tools are recommended.

The student will describe forced air, hot water, steam, gas radiant, electronic, and hydronic heating plants. He or she will become familiar with the control of the above equipment, how it is applied, and how it is serviced. He or she will become familiar with installation and maintenance of this equipment, heat loss, and how heat loss is controlled. Students will demonstrate understanding of combustion and the combustion process by measuring efficiency of various appliances. Basic tools are recommended.

Students will properly identify and test various heat pump components as well as diagram and troubleshoot heat pump controls. Students will demonstrate basic electric furnace troubleshooting techniques safely.

The student will estimate "load" and design duct installations for residential systems. He or she will identify efficient control units and properly balance these systems; calculate proper sizing, velocity, pressure, and loss; and describe the use of tempering and humidity controls in air-handling design. He or she will learn maintenance in relation to proper control and design and the use of available instruments. Basic tools are recommended.

Students will properly measure, cut and prepare various piping types for use in heating, ventilation and air-conditioning systems. Industry standard processes will be used to connect and pressure test process piping.

The student will properly identify and test various heat pump, domestic water heating and pump components as well as diagram and troubleshoot geothermal controls. Students will also demonstrate geothermal knowledge by layout and design of basic geothermal heat pump closed loop circuit using topographical site map(s).