(a) General requirements. This course is recommended
for students in Grades 11 and 12. Prerequisite: Heating, Ventilation,
and Air Conditioning (HVAC) and Refrigeration Technology I. Recommended
prerequisite: Principles of Architecture or Principles of Construction.
Students shall be awarded two credits for successful completion of
this course.
(b) Introduction.
(1) Career and technical education instruction provides
content aligned with challenging academic standards and relevant technical
knowledge and skills for students to further their education and succeed
in current or emerging professions.
(2) The Architecture and Construction Career Cluster
focuses on designing, planning, managing, building, and maintaining
the built environment.
(3) In Heating, Ventilation, and Air Conditioning (HVAC)
and Refrigeration Technology II, students will gain advanced knowledge
and skills needed to enter the industry as HVAC and refrigeration
technicians or building maintenance technicians or supervisors, prepare
for a postsecondary degree in a specified field of construction or
construction management, or pursue an approved apprenticeship program.
Students will acquire knowledge and skills in safety, electrical theory,
use of tools, codes, installation of commercial HVAC equipment, heat
pumps, troubleshooting techniques, various duct systems, and maintenance
practices.
(4) Students are encouraged to participate in extended
learning experiences such as career and technical student organizations
and other leadership or extracurricular organizations.
(5) Statements that contain the word "including" reference
content that must be mastered, while those containing the phrase "such
as" are intended as possible illustrative examples.
(c) Knowledge and skills.
(1) The student demonstrates professional standards/employability
skills as required by business and industry. The student is expected
to:
(A) identify job opportunities with their accompanying
job duties in occupations such as electrician, building maintenance
technician or manager, and electrical engineer; and
(B) research career pathways along with the education,
job skills, and experience required to achieve a career goal.
(2) The student learns the principles of commercial
air systems. The student is expected to:
(A) identify the differences between types of commercial
air systems;
(B) identify the type of building in which a particular
type of system is used; and
(C) explain the typical range of capacities for a commercial
air system.
(3) The student knows the principles of venting fossil-fuel
furnaces and the proper methods for selecting and installing vent
systems for gas-fired heating equipment. The student is expected to:
(A) describe the principles of combustion and explain
complete and incomplete combustion;
(B) describe the content of flue gas and explain how
it is vented;
(C) identify the components of a furnace vent system;
(D) describe how to select and install a vent system;
(E) perform the adjustments necessary to achieve proper
combustion in a gas furnace;
(F) describe the techniques for venting different types
of furnaces;
(G) explain the various draft control devices used
with natural-draft furnaces;
(H) calculate the size of a vent required for a given
application; and
(I) adjust a thermostat heat anticipator.
(4) The student gains knowledge of hot water heating
systems, focusing on safe operation of the low-pressure boiler and
piping systems commonly used in residential applications. The student
is expected to:
(A) explain the terms and concepts used when working
with hot-water heating;
(B) identify the major components of hot-water heating;
(C) explain the purpose of each component of hot-water
heating;
(D) demonstrate the safety precautions used when working
with hot-water systems;
(E) demonstrate how to operate selected hot-water systems;
(F) demonstrate how to safely perform selected operating
procedures on low-pressure systems;
(G) identify the common piping configurations used
with hot-water heating;
(H) explain how to read the pressure across a water
system circulating pump;
(I) calculate heating water flow rates; and
(J) select a pump for a given application.
(5) The student learns the basic principles, processes,
and devices used to control humidity and air clean-lines as well as
devices used to conserve energy in HVAC systems. The student is expected
to:
(A) explain why it is important to control humidity
in a building;
(B) recognize the various kinds of humidifiers used
with HVAC systems and explain why each is used;
(C) demonstrate how to install and service the humidifiers
used in HVAC systems;
(D) recognize the kinds of air filters used with HVAC
systems and explain why each is used;
(E) demonstrate how to install and service the filters
used in HVAC systems;
(F) use a manometer or differential pressure gauge
to measure the friction loss of an air filter;
(G) identify accessories commonly used with air conditioning
systems to improve indoor air quality and reduce energy cost and explain
the function of each, including humidity control devices, air filtration
devices, and energy conservation devices; and
(H) demonstrate or describe how to clean an electronic
air cleaner.
(6) The student gains the knowledge and skills in the
handling of refrigerant and equipment servicing procedures to service
HVAC systems in an environmentally safe manner. The student is expected
to:
(A) identify the common types of leak detectors and
explain how each is used;
(B) perform leak detection tests using selected methods;
(C) identify the service equipment used for evacuating
a system and explain why each item of equipment is used;
(D) perform system evacuation and dehydration;
(E) identify the service equipment used for recovering
refrigerant from a system and for recycling the recovered refrigerant
and explain why each item of equipment is used;
(F) perform a refrigerant recovery;
(G) evacuate a system to a deep vacuum;
(H) identify the service equipment used for charging
refrigerant into a system and explain why each item of equipment is
used;
(I) use nitrogen to purge a system; and
(J) charge refrigerant into a system using various
methods, including weight, superheat, sub-cooling, and charging pressure
chart.
(7) The student gains knowledge of transformers, single-phase
and three-phase power distribution, capacitors, theory and operation
of induction motors, and instruments and techniques used in testing
alternating current circuits and components. The student is expected
to:
(A) describe the operation of various types of transformers;
(B) explain how alternating current is developed and
draw a sine wave;
(C) identify single-phase and three-phase wiring arrangements;
(D) explain how phase shift occurs in inductors and
capacitors;
(E) describe the types of capacitors and their applications;
(F) explain the operation of single-phase and three-phase
induction motors;
(G) identify the various types of single-phase motors
and their applications;
(H) state and demonstrate the safety precautions that
must be followed when working with electrical equipment; and
(I) test alternating current components, including
capacitors, transformers, and motors.
(8) The student learns the theory of solid-state electronics
as well as the operation, use, and testing of the various electronic
components used in HVAC equipment. The student is expected to:
(A) explain the theory of electronics and semiconductors;
(B) explain how various semiconductor devices such
as diodes, light emitting diodes, and photo diodes work and how the
devices are used in power and control circuits;
(C) identify different types of resistors and explain
how their resistance values can be determined;
(D) describe the operation and function of thermistors
and cad cells;
(E) test semiconductor components; and
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