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Course Criteria
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3.00 Credits
Explores the fundamentals of electricity, electrical safety, magnetism and its association with electricity, Ohm's Law, series and parallel circuits, capacitance, inductance, resistance, transformers, and AC-DC motors and power factor. Introduces schematics and wiring diagrams, units of electrical measurement, and the use of meters to analyze circuits.
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3.00 Credits
Focuses on physical laws applied to refrigeration and heating. Introduces practical aspects of states of matter, energy forms, pressure, psychrometrics, pressure/enthalpy measurements, load calculations, heat quantities, heat transfer, insulation factors and coefficients, gas laws, and heat and water vapor flow through structures.
Corequisite:
RH A103
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4.00 Credits
Introduces and analyzes properties and applications of common refrigerants. Explores mechanical cooling systems for air conditioning and refrigeration and discusses various alternative cooling methods. Emphasizes safe refrigerant handling and preparation for the EPA Section 608 certification exam. Guides students through the process of building functional refrigeration systems in the lab and learning to properly adjust and maintain refrigeration equipment.
Prerequisite:
RH A101 UA D AND RH A109 UA D
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3.00 Credits
Emphasizes how to interpret schematic wiring diagrams and control circuits. Covers conductor sizing and motor protection for single-phase and three-phase motors. Builds understanding of electro-mechanical controls and introduces solid state controls for HVAC/R systems. Lab projects provide opportunities for practical application of course content.
Prerequisite:
RH A103 UA D AND RH A105 UA D
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3.00 Credits
Emphasizes systematic analysis and troubleshooting of HVAC/R systems to include mechanical, piping, electrical, and control systems with heavy emphasis on lab activities and training devices. Uses actual equipment with component faults to strengthen and test troubleshooting skills.
Prerequisite:
RH A101 UA D AND RH A105 UA D AND RH A109 UA D
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4.00 Credits
Covers commercial refrigeration systems, including ammonia refrigeration, CO2 refrigeration, components unique to commercial and industrial refrigeration, ice makers and ice making equipment, grocery store display cases, compressor racks, defrost methods, lubrication systems and oil return, effects of system contaminants, and pipe sizing. Introduces the safe startup and operation of a liquid overfeed ammonia refrigeration system.
Prerequisite:
RH A122 UA D AND RH A126 UA D
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3.00 Credits
Introduces concepts and components of basic residential and commercial heating and cooling control applications. Explores primary burner controls for forced air and hydronic control systems. Lab projects give practical application to the knowledge covered in the course.
Prerequisite:
RH A126 UA D AND RH A132 UA D
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2.00 Credits
Introduces current mechanical codes as adopted by the State of Alaska and covers sections of the International Mechanical Code related to general heating, ventilation, and air conditioning work.
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1.00 Credits
Explores methods, protocols, and techniques for building and maintaining positive relationships with customers. Identifies a variety of characteristics and related behaviors required of a successful and productive HVAC/R technician.
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4.00 Credits
Introduces knowledge and skills needed for the installation and service of forced air heating systems. Covers beginning maintenance and installation to advanced troubleshooting of heating systems.
Prerequisite:
RH A109 UA D
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