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APEX TECHNICAL SCHOOL

Refrigeration, Air Conditioning, Appliance and Controls

• Organization Directory Page
  (titles of all evaluated learning experiences, organization description, and source of official student records)

• Titles of all evaluated learning experiences in the Refrigeration, Air Conditioning, Appliance and Controls section

• Descriptions and credit recommendations

Descriptions and credit recommendations

Advanced Refrigeration and Air Conditioning
(formerly Advanced Refrigeration)
(Advanced Air Conditioning and Refrigeration Systems)
Location: 635 Avenue of the Americas, New York, NY.
Length: 150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
Dates: March 1994 - Present.
Objectives: Explain the principles of operation of a cooling tower; set tower controls; analyze tower operation; perform cooling tower shutdown and startup procedures; construct wiring and piping diagrams for cooling towers; explain principles of operation for a cascade refrigeration system, and construct wiring and piping diagrams; explain principles of operation for a heat pump system, and construct wiring and piping diagrams; explain principles of operation for an absorption system, and construct a piping diagram; construct, test, and use a hermetic analyzer; explain the principles of operation for an ammonia system and a lithium bromide system; identify EPA regulations pertinent to the operation and maintenance of industrial air conditioning and refrigeration units.
Instruction: Cooling towers: operation, maintenance, components, electrical and piping diagrams; cascade refrigeration systems: operation, components, electrical and piping diagrams; heat pumps: operation, components, reversing valves, electrical and piping diagrams, troubleshooting electrical and mechanical problems; electrical inspections of air conditioning units; hermetic analyzers; absorption systems with ammonia and lithium bromide cycles; EPA regulations. Students are prepared to sit for the EPA Type 608 certification exam upon completion of this course.
Credit recommendation: In the lower division baccalaureate/associate degree category, 4 semester hours (3 lecture, 1 shop) in HVAC&R Technology or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation).

Basic Refrigeration and Air Conditioning
(formerly Basic Refrigeration: 1. Introduction to Air Conditioning and Refrigeration and 2. Air Conditioning and Refrigeration Piping Practices)
Location: 635 Avenue of the Americas, New York, NY.
Length: Version 1 or 2: 150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
Dates: Version 1: March 1994 - August 2000. Version 2: September 2000 - Present.
Objectives: Version 1, Course 1: Describe the major components of vapor compression refrigeration systems; describe the basic refrigeration cycle; perform heat load calculations for water using the sensible and latent heat formulas; explain concepts of heat transfer, temperature, pressure, matter, and energy as related to refrigeration; explain the purpose of a pressure enthalpy diagram; define psychrometric terminology and use psychrometric charts. Version 1, Course 2:. Cut, flare, and swage, and bend copper tubing; perform soft and hard soldering techniques on copper tubing; use appropriate safety procedures. Version 2: Same as Version 1, Courses 1 and 2. 
Instruction: Version 1, Course 1: Basic refrigeration cycle; pressure, temperature, heat transfer, matter and energy; pressure enthalpy diagrams; psychrometric diagrams. Version 1, Course 2: Tubing operations - cutting, flaring, and swaging; soft and hard soldering; tube bending; steel to copper soldering; safety procedures. Version 2: Same as Version 1, Courses 1 and 2.
Credit recommendation: Version 1, Course 1 and 2, or Version 2: In the lower division baccalaureate/associate degree category, 2 semester hours as a general elective in a non-technical curriculum, or in the associate degree/certificate category, 3 semester hours (2 lecture, 1 shop) in HVAC&R Technology, or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation).

Commercial Air Conditioning
Location: 635 Avenue of the Americas, New York, NY.
Length: 150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
Dates: March 1994 - Present.
Objectives: For a commercial air conditioning unit: construct piping diagrams; perform basic cooling load calculations; describe refrigeration components; construct wiring diagrams; install and remove gauges; explain air flow, distribution, velocity, and pressure; adjust fan speed; describe the operation of cooling towers and evaporative condensers; wire electrical circuits; evaluate control and power circuits; perform maintenance on electrical and mechanical control devices; troubleshoot a commercial air conditioning unit; construct duct drawings; explain the operation of chilled water systems; evaluate conditioning processes on psychrometric charts.
Instruction: Air cooled and water cooled systems; refrigeration components; psychrometric processes; piping diagrams; introduction to cooling load calculations; electrical circuits; air flow and distribution; duct distribution; filtration; air volume, velocity, and static pressures; gauge procedures; fan speed adjustments; humidification; condensers; cooling towers; wiring; electrical and mechanical control maintenance; troubleshooting techniques; thermostats; duct drawings; chilled water systems.
Credit recommendation: In the lower division baccalaureate/associate degree category, 5 semester hours (3 lecture, 2 shop) in HVAC&R Technology or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation).

Commercial Refrigeration
Location: 635 Avenue of the Americas, New York, NY.
Length: 150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
Dates: March 1994 - Present.
Objectives: For a commercial refrigeration unit: install and remove gauges; determine system capacities and analyze system performance using a pressure enthalpy diagram; perform system pump down procedures; wire electrical circuits; explain the operation of evaporators, thermostatic expansion valves, air and water cooled condensers, and reciprocating compressors; perform recovery, evacuation, and recharging procedures; describe the function of single phase motors; evaluate current and potential relays; perform an electrical and mechanical evaluation; perform troubleshooting procedures; use appropriate safety procedures. Explain EPA regulations pertinent to the operation and maintenance of commercial refrigeration units.
Instruction: The refrigeration cycle; system capacity formulas; electrical circuits; gauge procedures; pump down procedures; evaporators; thermostatic expansion valves; condensers; compressors; recovery, evacuation, and recharging; current and potential relays; motors; three phase power; safety procedures; EPA objectives. Shop exercises are performed on a custom-designed commercial refrigeration trainer.
Credit recommendation: In the lower division baccalaureate/associate degree category, 4 semester hours (2 lecture, 2 shop) in HVAC&R Technology or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation).

Domestic Refrigeration and Air Conditioning
(formerly Domestic Refrigeration)
(Domestic Air Conditioning and Refrigeration)
Location: 635 Avenue of the Americas, New York, NY.
Length: 150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
Dates: March 1994 - Present.
Objectives: For a domestic air conditioning unit: construct piping, electrical, and air flow diagrams; evaluate electrical components; install line tap valves and extend process tubes; perform recovery, evacuation, and recharging procedures; identify common condenser problems; perform an electrical analysis. For a domestic refrigerator: evaluate electrical components; perform recovery, evacuation, and recharging procedures; perform aluminum evaporator repairs; perform troubleshooting procedures; use appropriate safety procedures.
Instruction: A/C unit piping diagrams, wiring diagrams, electrical components and analysis, hermetic compressors, gauge manifolds, process tubes, line tap valves; A/C condenser operation and problems; refrigerator components, air flow patterns, defrost systems, evaporators; zeotropic and azeotropic refrigerants; recovery, evacuation, and system charging for domestic A/C and refrigeration units; retrofitting; safety procedures; EPA regulations pertinent to type 1 domestic systems. Classroom sessions are followed by hands-on practice with domestic air conditioning and refrigeration units.
Credit recommendation: In the lower division baccalaureate/associate degree category, 5 semester hours (3 lecture, 2 shop) in HVAC&R Technology or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation).

Major Home Appliances  
(Introduction to Basic Electricity)
Location: 635 Avenue of the Americas, New York, NY.
Length: 150 hours (5 weeks); includes approximately 75 hours of supervised shop experience.
Dates: March 1994 - Present.
Objectives: Explain basic principles of electricity; perform electrical circuit calculations; following pictorial and ladder diagrams, wire, operate, and test electrical circuits, including various electric motors; construct ladder diagrams of electrical appliances and explain their operation; disassemble, evaluate, and reassemble electrical appliances; use appropriate safety procedures.
Instruction: Ohm’s law; Watt’s law; series and parallel circuits; electrical testing and measuring instruments; electromagnetism and AC motor principles; inductance and capacitance; split phase motors; electrical components of major home appliances; safety procedures. Classroom sessions are supplemented with hands-on activities using major home appliances.
Credit recommendation: In the lower division baccalaureate/associate degree category, 2 semester hours (1 lecture, 1 shop) in Electromechanical Technology, Mechanical Technology, or HVAC&R Technology, or in the associate degree/certificate category, 2 semester hours (1 lecture, 1 shop) in Electrical Technology, Electromechanical Technology, HVAC&R Technology, or Mechanical Technology (12/98) (12/03 revalidation) (1/09 revalidation).

Updated 1/23/09

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