Texas Administrative Code
Title 19 - EDUCATION
Part 2 - TEXAS EDUCATION AGENCY
Chapter 130 - TEXAS ESSENTIAL KNOWLEDGE AND SKILLS FOR CAREER AND TECHNICAL EDUCATION
Subchapter B - ARCHITECTURE AND CONSTRUCTION
Section 130.60 - Heating, Ventilation, and Air Conditioning (HVAC) and Refrigeration Technology II (Two Credits)
Universal Citation: 19 TX Admin Code ยง 130.60
Current through Reg. 49, No. 38; September 20, 2024
(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
(F) identify the connectors on
a personal computer.
(9)
The student learns the operation, testing, and adjustment of conventional and
electronic thermostats as well as the operation of common electrical,
electronic, and pneumatic circuits used to control HVAC systems. The student is
expected to:
(A) explain the function of a
thermostat in an HVAC system;
(B)
describe different types of thermostats and explain how the thermostats are
used;
(C) demonstrate the correct
installation and adjustment of a thermostat;
(D) explain the principles applicable to all
control systems;
(E) identify the
various types of electromechanical, electronic, and pneumatic HVAC controls and
explain their function and operation;
(F) describe a systematic approach for
electrical troubleshooting of HVAC equipment and components;
(G) recognize and use equipment
manufacturers' troubleshooting aids to troubleshoot HVAC equipment;
(H) demonstrate how to isolate electrical
problems to faulty power distribution, load, or control circuits;
(I) identify the service instruments needed
to troubleshoot HVAC electrical equipment;
(J) make electrical troubleshooting checks
and measurements on circuits and components common to all HVAC equipment;
and
(K) isolate and correct
malfunctions in a cooling system control circuit.
(10) The student learns the tools,
instruments, and techniques used in troubleshooting gas heating appliances,
including how to isolate and correct faults. The student is expected to:
(A) describe the operating sequence for gas
heating equipment;
(B) interpret
control circuit diagrams for gas heating systems;
(C) describe the operation of various types
of burner ignition methods;
(D)
identify the tools and instruments used when troubleshooting gas heating
systems;
(E) demonstrate using the
tools and instruments required for troubleshooting gas heating systems;
and
(F) isolate and correct
malfunctions in gas heating systems.
(11) The student learns the techniques and
equipment used in troubleshooting cooling equipment and analyzing system
temperatures and pressures in order to isolate faults. The student is expected
to:
(A) describe a systematic approach for
troubleshooting cooling systems and components;
(B) isolate problems to electrical and
mechanical functions in cooling systems;
(C) recognize and use equipment
manufacturers' troubleshooting aids to troubleshoot cooling systems;
(D) identify and use the service instruments
needed to troubleshoot cooling systems;
(E) troubleshoot selected problems in cooling
equipment; and
(F) state the safety
precautions associated with cooling troubleshooting.
(12) The student learns the principles of
reverse-cycle heating, the operation of various types of heat pumps, and the
mechanisms of heat pump control circuits and learns to install and service heat
pumps. The student is expected to:
(A)
describe the principles of reverse-cycle heating;
(B) identify heat pumps by type and general
classification;
(C) describe
various types of geothermal water loops and their application;
(D) list the components of heat pump
systems;
(E) describe the role and
operation of electric heat in common heat pump systems;
(F) describe common heat pump ratings such as
coefficient of performance, heating season performance factor, and seasonal
energy efficiency ratio;
(G)
demonstrate heat pump installation and service procedures;
(H) identify and install refrigerant circuit
accessories commonly associated with heat pumps;
(I) analyze a heat pump control circuit;
and
(J) isolate and correct
malfunctions in a heat pump.
(13) The student selects the application and
installation of various types of fasteners, gaskets, seals, and lubricants as
well as the installation and adjustment of different types of belt drives,
bearings, and couplings. The student is expected to:
(A) identify, explain, and install threaded
and non-threaded fasteners;
(B)
identify, remove, and install types of gaskets, packings, and seals;
(C) identify types of lubricants and explain
their uses;
(D) use lubrication
equipment to lubricate motor bearings;
(E) identify the types of belt drives,
explain their uses, and demonstrate procedures used to install or adjust
them;
(F) identify and explain
types of couplings;
(G) demonstrate
procedures used to remove, install, and align couplings;
(H) identify types of bearings and explain
their uses;
(I) explain causes of
bearing failures;
(J) demonstrate
procedures used to remove and install bearings;
(K) perform preventive maintenance inspection
and cleaning procedures; and
(L)
list ways to develop and maintain good customer relations.
(14) The student demonstrates how to lay out,
fabricate, install, and join sheet metal ductwork. The student is expected to:
(A) identify and describe the types of sheet
metal;
(B) define properties of
steel and aluminum alloys;
(C)
describe a layout method and perform proper cutting;
(D) join sheet metal duct sections using
proper seams and connectors;
(E)
describe proper hanging and support methods for sheet metal ductwork;
(F) describe thermal and acoustic insulation
principles;
(G) select, apply, and
seal the proper insulation for sheet metal ductwork;
(H) describe guidelines for installing
components such as register, diffusers, grilles, dampers, access doors, and
zoning accessories; and
(I) install
takeoffs and attach flexible duct to a sheet metal duct.
(15) The student gains the knowledge and
skills to lay out, fabricate, install, join, attach, and support fiberglass
ductwork and fittings. The student is expected to:
(A) identify types of fiberglass duct,
including flexible duct;
(B)
describe fiberglass duct layout and some basic fabrication methods;
(C) describe the various closure methods for
sealing fiberglass duct;
(D)
fabricate selected duct modules and fittings using the appropriate
tools;
(E) describe hanging and
support methods for fiberglass duct;
(F) describe how to repair major and minor
damage to fiberglass duct; and
(G)
install takeoffs and attach flexible duct to a fiberglass duct.
Disclaimer: These regulations may not be the most recent version. Texas may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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