The student will be able to:

1. Describe function and installation of thermostats and actuators for two position controllers and for modulating control
2. Describe and identify humidity, pressure, and miscellaneous controls
3. Describe valve and damper control applications
4. Explain primary source and secondary temperature control principles
5. Control refrigeration machinery and water piping systems
6. Describe combustion control applications
7. Perform service procedures used to troubleshoot HVACR equipment components and electrical control circuits

1. Describe operation of thermostats and actuators for two position controllers and for modulating control
   1. Bimetal and bellows thermostats, multi-stage thermostats
   2. Two wire unidirectional actuator motor, two position, and spring return
   3. Three wire two position actuators
   4. Actuator position feedback principles
   5. Floating control and proportional actuators
2. Describe and identify humidity, pressure, and miscellaneous controls
   1. Dry bulb temperature/wet bulb temperature
   2. Humidistat
   3. Dual pressure control and oil pressure failure control
   4. Static pressure control, time clocks, pressure switch, flow switch
   5. Step controller/microprocessor controller
3. Describe valve and damper control applications
   1. Automatic control valves/mixing valves/diverting valves
   2. Solenoid valves
   3. Parallel operation and opposed operation dampers
   4. Mixing dampers and face and bypass dampers
   5. Damper linkage adjustment
4. Explain primary source and secondary temperature control principles
   1. Primary source equipment/distribution equipment/terminal equipment
   2. Zone control
   3. Secondary control methods applied to distribution systems and terminal units
5. Control refrigeration machinery and water piping systems
   1. Reciprocating compressor diagrams and controls
   2. Control of centrifugal water chillers
   3. Chilled water and hot water piping control systems
   4. Reheat systems
6. Describe combustion control applications
   1. Operating controls, sensors, and limit controls
   2. Gas valves and pressure regulators
   3. Thermocouple and flame guard systems
7. Perform service procedures used to troubleshoot HVACR equipment components and electrical control circuits
   1. Electrical safety review
   2. Component fault isolation checks
   3. Inductive load and switching device measurements
   4. Electric motor/compressor checks and electrical measurements
   5. Assemble complex electrical power and control circuits with components

Students will work individually and in teams on using correct service procedures to solve electrical problems.

Results of written quizzes and final examination
Satisfactory completion of hands-on projects
Maintenance of a student's workbook with questions drawn from text

Lecture
Lab assignment
Group discussion
Demonstration

Smith, Russell E.. Electricity for Refrigeration, Heating and Air Conditioning, 11th ed.. 2022.

Smith, Russell E.. Cengage: The Complete HVAC Lab Manual. 2022.

Auvil, Ronnie J.. HVAC and Refrigeration Systems Training Manual. 2014.

Although some of these textbooks are older than 5 years, they conform to national training standards and are considered seminal works in the discipline. We will adopt the next edition of each text, as it is published.

1. Readings from textbook
2. Writing assignments given in the laboratory
   1. Draw a schematic wiring diagram for a floating control system
   2. Describe the function and operation of each component in the circuit