Texas Skill Standards Board
Occupational Title: Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR)
Technician Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning, and refrigeration systems.
Critical Work Functions
1. Operate according to acceptable practices within the workplace environment
AEKS Matrix
2. Diagnose, install, troubleshoot, and repair electrical systems in HVACR equipment
AEKS Matrix
3. Design, install, and maintain piping systems for HVACR equipment AEKS Matrix 4. Utilize refrigeration principles and practices AEKS Matrix 5. Utilize heating principles and practices in residential and light commercial heating and heat pumps
AEKS Matrix
6. Install, maintain, and repair residential and light commercial air conditioning systems
AEKS Matrix
7. Inspect, install, maintain, and repair refrigeration systems AEKS Matrix NOTE: The Heating Ventilation, Air Conditioning, and Refrigeration (HVACR) Technician skill standards were reviewed and updated on March 3,
2004, by statewide industry representatives of the Heating, Ventilation, and Air Conditioning Industry Advisory Committee of Eastfield College, Dallas County Community College District, including members of the Air Conditioning Contractors of America (ACCA)-Texas and North Texas chapter. In April 2004 industry representatives of the HVAC Industry Advisory Committee of Vernon College, Wichita Falls, Texas, conducted a
second review and update.
Recognized by the Texas Skill Standards Board, July 13, 2004 1
Texas Skill Standards Board
Occupational Title: HVACR Technician
Critical Work Function 1 Operate according to acceptable practices within the workplace environment
Occupational Skills, Knowledge and Conditions
Key Activities Performance Criteria Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical
work function.
Specific demonstrable performance and standards that
indicate when the key activity has been performed
successfully.
Those skills and knowledge that are specific to the occupation, such as technical processes or procedures common across the
occupation that are critical to the related key activity.
Tools, resources and equipment necessary to carry
out key activities and their related performance criteria.
KA1.1 Perform operation in a safe manner in accordance with company guidelines and federal, state, and local regulations.
Number Criteria 1.1.1 Apply safety
regulations and procedures per OSHA and DOT.
1.1.2 Handle refrigerant according to EPA regulations.
1.1.3 Apply and perform according to company guidelines.
Knowledge of OSHA, DOT, and EPA rules and regulations. Knowledge and certification in refrigerant recovery, storage, and handling Knowledge of local building and energy safety codes Understanding of ladder safety
Appropriate OSHA, DOT, and EPA manuals Refrigerant recovery unit Guidelines of local building and energy safety codes Company guidelines
KA1.2 Perform operations involving hazardous materials in a safe manner in accordance with federal, state and local regulations.
Number Criteria 1.2.1 Identify hazardous
substances in the work area.
1.2.2 Handle hazardous materials according to OSHA regulations.
1.2.3 Transport hazardous material according to DOT regulations.
1.2.4 Dispose of hazardous materials
di t f d l
Knowledge of OSHA, DOT, and EPA rules and regulations Knowledge of local regulations Knowledge of proper refrigeration transportation Knowledge of asbestos rules and regulations Knowledge of Material Safety Data Sheets (MSDS)
Appropriate OSHA, DOT, and EPA manuals Guidelines of local regulations Material Safety Data Sheets (MSDS)
Recognized by the Texas Skill Standards Board, July 13, 2004 2
Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems.
Texas Skill Standards Board
according to federal, state, and local regulations.
KA1.3 Ensure that employees/teams develop and improve technical, interpersonal, and communication skills to provide effective customer service.
Number Criteria Knowledge of PC usage and appropriate software Basic business writing
Personal computer Appropriate service manuals
Recognized by the Texas Skill Standards Board, July 13, 2004 3
1.3.1 Develop employees’ technical and interpersonal skills.
1.3.2 Follow company conduct codes to ensure ethical behavior.
1.3.3 Answer and advise customer in a professional, polite, and thorough manner.
1.3.4 Solve customer problems by utilizing reference materials and discussing possible solutions with supervisor and co-workers
1.3.5 Communicate and translate technical information/terms verbally and/or in writing in a clear, precise, and logical manner in layman terms.
1.3.6 Read service manuals, forms, and other written materials with comprehension.
Formal/informal customer surveys indicate general satisfaction with
1.3.7
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employees/teams.
Recognized by the Texas Skill Standards Board, July 13, 2004 4
Texas Skill Standards Board
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 1 Operate according to acceptable practices within the shop environment. Listening Speaking Using
Information and Communi- cations Technology
Gathering and Analyzing Information
Analyzing and Solving Problems
Making Decisions and Judgments
Organizing and Planning
Using Social skills
Adaptability Working in Teams
Leading Others
Building Consensus
Self and Career Develop-ment
Writing Reading Mathe-matics
Science
KA 1.1 Perform operations in a safe manner in accordance with federal, state, and local regulations. 4 3 3 3 3 3 4 3 3 4 3
KA 1.2 Perform operations involving hazardous materials in a safe manner in accordance with federal, state and local regulations. 4 3 3 3 3 3 3 3 3 4 3
KA 1.3 Ensure that employees/teams develop and improve technical, interpersonal, and communication skills to provide effective customer service. 4 3 3 3 3 3 4 3 3 3 3 3 3 3 4 3
Statement of Assessment Strategy: Simulation of work activity; oral presentation; paper/pencil Tools: Appropriate EPA, OSHA, and DOT manuals, appropriate service manuals, personal computer, refrigerant recovery unit.
Recognized by the Texas Skill Standards Board, July 13, 2004 5
Texas Skill Standards Board
Occupational Title: HVACR Technician Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems. Critical Work Function 2 Diagnose, install, troubleshoot, and repair electrical systems in HVACR equipment
Occupational Skills, Knowledge and Conditions
Key Activities Performance Criteria Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical work
function.
Specific demonstrable performance and standards that indicate when the key
activity has been performed successfully.
Those skills and knowledge that are specific to the
occupation, such as technical processes or procedures
common across the occupation that are critical to the related
key activity.
Tools, resources and equipment necessary to carry
out key activities and their related performance criteria.
KA2.1 Apply relevant principles in the selection, installation, and repair of electrical systems.
Number Criteria 2.1.1 Application of both
alternating and direct current theory to air conditioning, heatingand refrigeration systems for power and/or control circuits.
2.1.2 Identify common single and 3-phase power and control circuits.
2.1.3 Wire series, parallel, and compound circuits utilizing the principles and relationships of Ohm's and Watt's laws.
2.1.4 Install correctly sized electrical conductors and properly rated insulation.
Knowledge and understanding of electrical theory and circuitry Knowledge and application of meter measurement Knowledge of Electrical Code Book (ampacity or wire, wire sizing, and grounding requirements) Knowledge of Ohm’s Law for electrical calculations Read and apply wire diagrams, ladder, and pictorial schematics Ability to differentiate low voltage and high voltage circuits
Appropriate hand tools Digital multimeter Lap-top computer VOM multimeter Megometer NEC Handbook Clamp-on ammeter
Recognized by the Texas Skill Standards Board, July 13, 2004 6
Texas Skill Standards Board
Recognized by the Texas Skill Standards oard, JuB ly 1 7
3, 2004
2.1.5 Install properly sizedelectrical circuit protection including fuses, circuit breakers, overloads and disconnect switches.
2.1.6 Inspect and test single and 3-phase transformers.
2.1.7 Select appropriate single and 3-phase transformers.
2.1.8 Install single and 3-phase transformers.
2.1.9 Ground electrical circuits properly.
2.1.10 Measure electrical current voltage and resistance.
2.1.11 Post-serviceperformance audit of HVACR equipment indicates electrical systems operating at or above manufacturer’s design specifications, benchmarks, and baselines.
KA2.2 Select, install, and replace electrical motors.
Number Criteria Knowledge and understanding of the design of electrical motors (shaded pole, split-phase, Permanent Split Capacitator-PCM, Integrally Controlled Motors -ICM, and 3-phase motors) Ability to identify and interpret
Appropriate hand tools Wheel and pulley pullers Capacitor tester VOM multimeter Megometer
2.2.1 Select electric motor based on manufacturer’s specifications for different uses and applications.
2.2.2 Install and replace
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Recognized by the Texas Skill Standards Board, July 3, 2004 1 8
various types of electric motors according to the requirement of the situation.
2.2.3 Install various types of capacitors according to the requirements of the situation.
2.2.4 Install electric motor protection devices.
2.2.5 Interpret electric motor specifications.
2.2.6 Post-serviceperformance audit indicates electric motors operating at or above manufacturer’s design specifications, benchmarks, and baselines.
electric motor specifications and data plate information to replace motors. Knowledge and application of various measuring instruments and testing devices. Knowledge of voltmeter usage to determine proper voltage to motor Knowledge of ammeter usage to determine proper current draw Knowledge of Ohm meter usage to determine proper resistance in motor
Clamp-on ammeter
KA2.3 Wire and troubleshoot electrical controls.
Number Criteria Knowledge and application of electrical control circuitry Knowledge and application of meter measurement Ability to identify pressure switches and electromechanical control devices Ability to read schematic drawings to check for proper wiring of high and low voltage controls
Appropriate hand tools VOM multimeter Clamp-on ammeter
2.3.1 Identify and wire safety and operation control devices; for example, pressure switches, thermostats, etc.
2.3.2 Identify and wire electromechanical control devices; for example, relays, contactors, magnetic starters, timers, sequencers, etc.
Texas Skill Standards Board
2.3.3 Identify and wire electronic control devices; for example, ignition modules, electronic timers, etc.
2.3.4 Wire both power and control circuits of an electric heat pump.
2.3.5 Wire both power and control circuits of air conditioned, heating, and refrigeration systems.
2.3.6 Wire low voltage controls for gas furnace.
2.3.7 Post-service performance audit indicates devices and circuits properly wired according to manufacturer’s design specifications, benchmarks, and baselines.
Ability to read schematic drawings to apply voltmeter probes for testing of voltages at selected circuits Ability to use voltmeter to determine if power off to be able to Ohm out component and circuits for possible faults Ability to use ammeter while circuits energized to determine loads are energized
Recognized by the Texas Skill Standards Board, July 13, 2004 9
Texas Skill Standards Board
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 2 Diagnose, install, troubleshoot, and repair electrical systems in HVACR equipment. Listening Speaking Using
Information and Communi- cations Technology
Gathering and Analyzing Information
Analyzing and Solving Problems
Making Decisions and Judgments
Organizing and Planning
Using Social skills
Adaptability Working in Teams
Leading Others
Building Consensus
Self and Career Develop-ment
Writing Reading Mathe-matics
Science
KA 2.1 Apply relevant principles in the selection, installation, and repair of electrical systems. 3 3 4 4 4 3 3 3 3 3 3 4 3
KA 2.2 Select, install, and replace electrical motors. 3 3 4 4 4 3 3 3 3 3 3 3 3
KA 2.3 Wire and troubleshoot electrical controls. 3 3 4 4 4 3 3 3 3 3 3 3
Statement of Assessment Strategy: Simulation of work activity, use of audio-visual aids, paper/pencil. Tools: Appropriate hand tools, appropriate measuring instruments, NEC Handbook
Recognized by the Texas Skill Standards Board, July 13, 2004 10
Texas Skill Standards Board
Occupational Title: HVACR Technician Key Purpose: Diagnose, install, service, and repair heating, ventilation, and air conditioning systems. Critical Work Function 3 Design, install, and maintain piping systems for HVACR equipment
Occupational Skills, Knowledge and Conditions
Key Activities Performance Criteria Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical work
function.
Specific demonstrable performance and standards that indicate when the key
activity has been performed successfully.
Those skills and knowledge that are specific to the
occupation, such as technical processes or procedures
common across the occupation that are critical to the related
key activity.
Tools, resources and equipment necessary to carry
out key activities and their related performance criteria.
KA3.1 Identify, install, maintain, and replace drainage and venting systems.
Number Criteria 3.1.1 Identify properly
sized and applied condensate drains and waste drains connected to HVACR equipment and accessories.
3.1.2 Install properly sized and applied condensate drains and waste drains connected to HVACR equipment and accessories.
3.1.3 Maintain properly sized and applied condensate drains and waste drains connected to HVACR equipment and accessories.
3.1.4 Replace properly sized and applied condensate drains
Knowledge and application of drain and vent system design Understanding of proper procedures for brazing HVACR piping Knowledge and understanding of reference code books
Appropriate hand tools Air/Acetylene brazing torch
Recognized by the Texas Skill Standards Board, July 13, 2004 11
Texas Skill Standards Board
and waste drains connected to HVACR equipment and accessories.
3.1.5 Post-service performance audit of HVACR equipment indicates condensate drains and waste drains connected to HVACR equipment and accessories operating at or above manufacturer's design specifications, benchmarks, and baselines.
KA3.2 Identify, select, and utilize piping systems and components.
Number Criteria Knowledge and application of piping materials and design
Appropriate hand tools
Recognized by the Texas Skill Standards Board, July 13, 2004 12
3.2.1 Identify and select fuel and heat distribution pipes according to sizing and layout requirements.
3.2.2 Identify and select appropriate piping systems based on pipe selection, pipe size, and system design.
3.2.3 Select the proper fitting or valve for specific applications; for example, globe valves, gate valves, angle valves, check valves, elbows, tees,
Texas Skill Standards Board
unions, couplings, and half union.
3.2.4 Utilize pipe accessories, such as flanges, isolators, hangers, expansion joints, expansion, loops, supports, insulation, etc.
3.2.5 Post-service performance audit of HVACR equipments indicates piping system components operating at or above manufacturer’s design specifications, benchmarks, and baselines.
Recognized by the Texas Skill Standards Board, July 13, 2004 13
Texas Skill Standards Board
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 3 Design, install, and maintain piping systems for HVACR equipment. Listening Speaking Using
Information and Communi- cations Technology
Gathering and Analyzing Information
Analyzing and Solving Problems
Making Decisions and Judgments
Organizing and Planning
Using Social skills
Adaptability Working in Teams
Leading Others
Building Consensus
Self and Career Develop-ment
Writing Reading Mathe-matics
Science
KA 3.1 Identify, install, maintain, and replace drainage and venting systems. 3 4 4 4 3 3 3 2 3 3 3 3
KA 3.2 Identify, select, and utilize piping systems and components. 3 4 4 4 3 3 3 2 3 3 3 3
Statement of Assessment Strategy: Simulation of work activity, paper/pencil. Tools: Appropriate hand tools, air/acetylene brazing unit.
Recognized by the Texas Skill Standards Board, July 13, 2004 14
Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems. Critical Work Function 4 Utilize refrigeration principles and practices
Occupational Skills, Knowledge and Conditions
Key Activities Performance Criteria Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical work
function.
Specific demonstrable performance and standards that
indicate when the key activity has been performed successfully.
Those skills and knowledge that are specific to the
occupation, such as technical processes or procedures
common across the occupation that are critical to
the related key activity.
Tools, resources and equipment necessary to carry
out key activities and their related performance criteria.
KA4.1 Diagnose refrigeration systems by applying appropriate theories.
Number Criteria 4.1.1 Apply theory of heat
transfer in the diagnosis of refrigeration systems.
4.1.2 Apply the properties of different refrigerants in different applications.
4.1.3 Apply proper diagnostics to the refrigeration cycle of a mechanical system.
4.1.4 Utilize pressure, temperature curves and charts to solve problems.
Knowledge of refrigeration system principles and circuitry Understanding of theory of heat transfer Knowledge of Boyles Law Knowledge of Chale’s Law Knowledge of Dalton’s law Knowledge of 1st and 2nd Law of Thermo-Dynamics Knowledge and interpretation of pressure/temperature relationships to convert pressures and temperatures of refrigerants and to identify appropriate refrigerants for application Ability to read and apply enthalpy charts
Appropriate hand tools Refrigerant manifold gauge with hoses Digital thermometer
Recognized by the Texas Skill Standards Board, July 13, 2004 15
Texas Skill Standards Board
Occupational Title: HVACR Technician
Texas Skill Standards Board
KA4.2 Select, install, maintain, and repair refrigeration system components.
Number Criteria 4.2.1 Select compressors,
condensers, metering devices,and evaporators.
4.2.2
Install compressors,condensers, metering devices,and evaporators.
4.2.3
Inspect and tescompressors, condensers, metering devices,and evaporators.
t
4.2.4
Repair compressors,condensers, metering devices,and evaporators.
4.2.5 f
,
Post-serviceperformance audit oHVACR equipment indicates refrigeration systemcomponents operation at orabove manufacturer’sdesign specificationsbenchmarks, andbaselines.
nowledge and understanding f four major refrigeration ystem components ompressors, condensers, etering devices, and vaporators)
nowledge and understanding f evacuation
nowledge and application f various measuring struments and testing evices
nderstanding of proper rocedures for oxy/acetylene elding
Appropriate hand tools
VOM multimeter
Refrigerant manifold gauges
Electronic temperature stations
Micron gauge
Oxy/acetylene welding set
Leak detector
Ammeter
KA4.3 Select, install, maintain, and repair refrigeration system accessories.
Number Criteria 4.3.1 Select refrigeration
system accessories; for example, recaccumulators, filter/dryers, sight glasses, valves, etc.
nowledge and understanding f evacuation procedures.
nowledge and application of various measuring instruments
nd testing devices.
procedures for oxy/acetylene ldi
Appropriate hand tools VOM multimeter
Refrigerant manifold gauges
2-stage vacuum pump
Micron gauge
Kos(cme Ko Koind Upw
2-stage vacuum pump
eivers,
Ko K
a Understanding of proper
Recognized by the Texas Skill Standards Board, July 13, 2004 16
Texas Skill Standards Board
4.3.2
for vers,
Install refrigeration system accessories;example, receiaccumulators, filter/dryers, sight glasses, valves, etc. Maintain refrigeration accessories; foexample, receiveraccumulators, filter/dryers, sight glasses, valves, etc. Repair refrigsystem accessories; for example, receivers, accumulators, filter/dryers, sight glasses, valves, etc. Post-service performance audit of HVACR equipment indicates refrigeration systeaccessories
elding. Oxy/acetylene welding set
Leak detector
Ammeter
4.3.3 system
r s,
4.3.4 eration
4.3.5
m
operating at or above manufacturer’s design specifications, benchmarks, and baselines.
w
Recognized by the Texas Skill Standards Board, July 13, 2004 17
Texas Skill Standards Board
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 4 Utilize refrigeration principles and practices. Listening Speaking Using
Information and Communi- cations Technology
Gathering and Analyzing Information
Analyzing and Solving Problems
Making Decisions and Judgments
Organizing and Planning
Using Social skills
Adaptability Working in Teams
Leading Others
Building Consensus
Self and Career Develop-ment
Writing Reading Mathe-matics
Science
KA 4.1 Diagnose refrigeration systems by applying appropriate theories. 3 3 4 4 4 3 3 3 3 3 3 2 3 3 3
KA 4.2 Select, install, maintain, and repair refrigeration system components. 3 3 4 4 4 3 3 3 3 3 3 2 3 3 3
KA 4.3 Select, install, maintain, and repair refrigeration system accessories. 3 3 4 4 4 3 3 3 3 3 3 2 3 3 3
Statement of Assessment Strategy: Simulation of work activity, oral presentation, paper/pencil. Tools: Appropriate hand tools, appropriate measuring instruments and testing devices, oxy/acetylene welding set.
Recognized by the Texas Skill Standards Board, July 13, 2004 18
Key Purpose: Diagnose, install, service, and repair heating, ventilation, and air conditioning systems. Critical Work Function 5 Utilize heating principles and practices in residential and light commercial heating and heat pumps
Occupational Skills, Knowledge and Conditions
Key Activities Performance Criteria Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical
work function.
Specific demonstrable performance and standards that indicate when the
key activity has been performed successfully.
Those skills and knowledge that are specific to the
occupation, such as technical processes or procedures
common across the occupation that are critical to
the related key activity.
Tools, resources and equipment necessary to carry
out key activities and their related performance criteria.
KA5.1 Apply heating principles to HVACR system.
Number Criteria 5.1.1 Identify and diagnose type
of fuel and operating fuel systems operating conditions.
5.1.2 Identify and diagnose types of fuel systems, such as propane, butane and natural gas.
5.1.3 Supervisor's review indicates design specifications adequate for specified HVACR systems.
Knowledge and understanding of heating principles. Understanding and application of drafting principles and tools.
Pressure gauges Manometer
KA5.2 Identify, diagnose, install, maintain, and replace electric air, forced air, gas and electric heating systems.
Number Criteria 5.2.1 Identify and diagnose electric
resistance heat systems and forced-air heating systems.
5.2.2 Install electric resistance heat systems and forced-air heating systems.
5.2.3 Maintain electric resistance heat systems
Knowledge of heating system principles. Knowledge and understanding of LP and natural gas heating applications. Knowledge and application of various meter measurements.
Appropriate hand tools VOM multimeter Manometer Ammeter Digital thermometer
Recognized by the Texas Skill Standards Board, July 13, 2004 19
Texas Skill Standards Board
Occupational Title: HVACR Technician
Texas Skill Standards Board
and forced-air heating systems. Repair electric resistaheat systems and forced-air heating systems. Post-service performancaudit of HVACR equipment indicates electric resistance hsystem operating at or above manufacturer’s design specification, benchmarks, and baselines.
Ability to use voltmeter to determine proper voltage
bility to use ammeter to determine heating element
peration
Ability to use Ohm Meter to
ement condition
Ability to use temperature meter to determine air
mperature rise
Ability to use temperaturmethod to determine airflow.
hydronic heating systems.
nowledge and nderstanding of gas-fired
hydronic heat systems
Knowledge and application of eter measurement
nowledge and understanding of sizing and layout of liquid and natural
as pipes
nowledge of venting
Knowledge and
understanding of National Fuel Gas Code
Manometer
Digital thermometer
5.2.4 nce
5.2.5 e
eat
A
o
determine load winding and el
te
e rise
KA5.3 Identify, diagnose, install, maintain, and replace residential and gas-fired
Ku
m K
g
K
Appropriate hand tools VOM multimeter
Recognized by the Texas Skill Standards Board, July 13, 2004 20
Number Criteria 5.3.1 Identify and diagnose
hydronic gas and electric heat systems.
5.3.2 Install hydronic gas and electric heat systems.
5.3.3 Maintain hydronic gas and electric heat systems.
5.3.4 Repair hydronic gas and electric heat systems.
5.3.5 Identify and select liquid, natural gas and oil pipe sizes and layout.
5.3.6 Post-service performance audit of HVACR equipment indicates hydronic gas and electric heat system operating at or above manufacturer's design specifications, benchmarks, and
Texas Skill Standards Board
13, 2004
21
baselines.
compression and resistive heating systems in the heat pump.
Cr iteria5.4.1 Diagnose problems
related to vapor compression heat pump cycles.
5.4.2 Inspect supplementary heat for proper
operation. 5.4.3
Repair the supplementary heat.
5.4.4 Determine balance point of heat pumps,
5.4.5
nt
Identify and calculate heating capacity based on outdoor ambietemperature.
5.4.6
er’s ns,
baselines.
Post-service performance audit of HVACR equipment indicates compression and resistive heating system operating at or above manufacturdesign specificatiobenchmarks, and
understanding of effect of utdoor temperature on eating capacity
Ability to calculate balance
oh
oint using heat load and anufacturers’ data
Ability to calculate heat loads r proper sizing of system
nd to calculate heating capacity required of structure
ased on heat loss
Knowledge of heat pumps
nd supplementary heat
owledge and application Kv
nrious measuring struments and testing evices
pressure/temperature lationships
VOM multimeter
Ammeter
Digital thermometer
and repair electrical circuits fall types of heat pumps.
rcuitry as used in heat umps
eter measurement
Knowledge and nderstanding of
manufacturing maintenance
Appropriate hand tools
VOM multimeter
Ammeter
Digital thermometer
KA5.4 Diagnose, maintain, and repair Number
Knowledge and
pm
foa
b
a
of a
ind Knowledge and interpretation ofre
Appropriate hand tools
Refrigerant gauge manifold
KA5.5 Identify, diagnose, maintain, or
Knowledge of electrical cip Knowledge and application of m
u
Recognized by the Texas Skill Standards Board, July
Number Criteria 5.5.1 Identify and diagnose
the electrical circuits of air to air, water to air, and ground to air heat pumps.
5.5.2 Inspect and adjust the electrical circuits of air to air, water to air, and ground to air heat
Criteria
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pumps. 5.5.3 Repair the electrical
circuits of air to air, water to air, and ground to air
heat pumps. 5.5.4
sign
Post-service performance audit of HVACR equipment indicates electrical circuits for all types of heat pumps operating at or above manufacturer's despecifications, benchmarks, and baselines.
g Ability to use wiring diagrams fotr
o
uidelines.
r installation and oubleshooting
Ability to use ammeter,
v ltmeter and Ohm meter
bility to identify various heat pump defrost control types
Knowledge and application of meter measurement
Knowledge and nderstanding of anufacturing guidelines
bility to differentiate methods for heat pump
efrost and initiate defrost for troubleshooting procedures
Appropriate hand tools
VOM multimeter
Ammeter
Digital thermometer
KA5.6 Verify proper operation of defrost controls in heat pump systems.
A
um A
d
Ability to use wiring diagrams for troubleshooting and installation
Refrigerant gauges
Recognized by the Texas Skill Standards Board, July 13, 2004 22
Number Criteria 5.6.1 Inspect proper operation
of defrost controls in heat pump systems; for example, electronic demand defrost, pressure, time/temperature, time, etc.
5.6.2 Repair and/or replace defrost controls in heat pump systems; for example, electronic demand defrost, pressure, time/temperature, time, etc.
5.6.3 Post-service performance audit of HVACR equipment indicates defrost controls in heat pump system operating at or above manufacturer’s design specifications,
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bb
enchmarks and aselines.
Recognized by the Texas Skill Standards Board, July 13, 2004 23
Texas Skill Standards Board
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 5 Utilize heating principles and practices in residential and light commercial heating and heat pumps. Listening Speaking Using
InformGathering Analyzing Making Organizing Usi
atioand
n and Analyzing
o
and Solvin
Socialskills
orking Leading Building Consensu
Self and
Writing Reading Mathe-matics
Science
Communi- cations Technology
Informati n Problems Judgments g
Decisions and
and Planning
ng Adaptability W in
Teams Others s Career
Develop-ment
ply heating prin ACR design. 3 3 3 3 3
ectric air, forced air, gas and electric heating systems. 3
KA 5.3 Identify, diagnose, install, maint eplace re and ga main, and r sidential s-fired hydronic heating syste s. 3 4 4 3 3 3 3
Diagnose, maintain, r comp on and resistive heatin systems in the heat pu3 3 3
ctrical circuits for all t s of heat pumps. 3 3 3 3 3
in heat pump systems.3 3 3 3
Statement of Assessment al pres ion, paper/pencil.
appropriate measur nstruments and testing device .
3 3 4 4 4 3 3 3 3 3
3 3 4 4 4 3 3 3 3 3 3 3 3 3
3 4 3 3 3 3 3
3 3 4 4 4 3 3 3 3 3 3 3 3
3 3 4 4 4 3 3 3 3 3 3
3 3 4 4 4 3 3 3 3 3
Strategy: Simulation of work activity, or entatTools: Personal computer, appropriate hand tools, ing i s
Recognized by the Texas Skill Standards Board, July 13, 2004 24
KA 5.1 Apply heating principles to HVACR design.
KA 5.2 Identify, diagnose, install, maintain, and replace electric air, forced air, gas and electric heating systems.
KA 5.4 Diagnose, maintain, and repair compression and resistive heating systems in the heat pump.
KA 5.5 Identify, diagnose, maintain, and repair electrical circuits for all types of heat pumps.
KA 5.6 Verify proper operation of defrost controls in heat pump systems.
Texas Skill Standards Board
s oard, JuB ly 13 25
, 2004
rvice, repair heating, ventila iOccupational Skills, Knowledge and
Performance Criteria Occupational Skills and
Specific de mance monstrable perfor
Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems.
and standards that indicate when the key activity has been performed
successfully.
Criteria Identify and diagnose air conditioning systems (split, packages) as to size and capacity style,
systems taking into account temperature, humidity, heat gain and heat loss of structair movement, etc. Maintain air
psychrometrics Knowledge and applicatioof various
devices. Knowled
proper location of equipment and lines
and circular saws Ability to braze copper tubing Ability to measure tdetermine proper
VOM multimeter Ammeter 2-stage va
Occupational Title: HVACR Technician
Critical Work Function 6 Design, install, maintain, and repair residential and light commercial air conditioning systems
Key Activities Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical
work function.
Those skills and knowledge that are specific to the
occupation, such as technical processes or procedures
common across the occupation that are critical to
the related key activity.
Tools, resources and equipment necessary to
carry out key activities and their related performance
criteria.
KA6.1 Identify, diagnose, install, maintain, and repair air conditioning systems.
Number 6.1.1
taking into account temperature, humidity, refrigeration pressures, heat gain and heat loss of structure, refrigerant leaks, air movement, etc.
6.1.2 Install air conditioning
ure,
6.1.3 conditioning systems taking into account temperature, humidity, heat gain and heat loss
Understanding of residential and light commercial air conditioning systems. Understanding of
n measuring
instruments and testing
ge of manufacturers’ installation instructions for
Ability to use reciprocating
emperature difference to
Appropriate hand tools (circular saws) Manifold gauge
cuum pump Micron gauge Digital thermometer Psychrometer Psychrometric chart Air-flow meter Heat loads Duct Calculator
Recognized by the Texas Skill Standard
Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems.
Criteria
Specific demonstrable performance
Performance Criteria
Occupational Skills, Knowledge and Conditions
Texas Skill Standards Board
of structure, air movement, etc. Repair air cosystems taking into account temperature, humidity, heat gain and heat loss of structure, air movement, etc. Post-service performance audit of
temperature across evaporator Ability to use nitrogen, ultrasonic, and electronic leak detectors to find
Recognized by the Texas Skill Standards Board, July 13, 200 26
6.1.4 nditioning
6.1.5
HVACR equipment meets mechanical codes and indicates air conditioning systems operating at or above manufacturer’s design specifications, benchmarks, and baselines.
refrigerant links
Nitrogen, ultrasonic, and electronic leak detectors
KA6.2 Identify, diagnose, install, maintain, and repair air distribution systems, condensate drain systems, and air filtration systems.
Knowledge of HVACR air distribution, condensate drain systems, and air filtration systems Understanding of the proper procedures for air/acetylene torch rig Understanding of duct sizing for proper CFM (cubic feet per minute) air flow Ability to use duct calculator Ability to use heat loss/heat gain calculations to determine CFM requirements Ability to use magnetic gauges to measure static
Appropriate hand tools Air/Acetylene torch rig Ductulator
Number Criteria 6.2.1 Identify and diagnose
air distribution systems, condensate drain systems, and air filtration systems.
6.2.2 Install air distribution systems, condensate drain systems, and air filtration systems.
6.2.3 Maintain air distribution systems, condensate drain systems, and air filtration systems.
6.2.4 Repair air distribution systems, condensate drain systems, and air filtration systems.
6.2.5 Post-service performance audit of
Texas Skill Standards Board
HVACR equipment indicates air
ctt ,
.
distribution, condensate drain, and air filtration systems operating at or above
Ability to use temperaturemethod for determining CFM
manufaspecificabenchmabaselines
urer's desiionsrks, and
gn
pressure and velocity pressure
rise
Recognized by the Texas Skill Standards Board, July 13, 2004 27
Texas Skill Standards Board
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 6 Design, install, maintain, and repair residential and light commercial air conditioning systems. Listening Speaking Using Gathering Analyzing Making
Information and
ogy
and Analyzing
and Solving Probl
and
Organizing
Planning
Using Sociaskills
Adaptability Working Leading s
Building Consensu
Self and
Develop-
W iting Reading Mathe-matics
Science
Communi- cations Technol
Information ems Judgments
Decisions and l in Teams
Other s Career r
ment
nd repair air condition ems. 4 3 3
stems, condensate drain syst3 3 4 4 4 3 3 3 3 3 3 3 3 3 3
Statement of Assessment
ing instruments an ting devices, psychrometric ch rts, air/acetylene torch rig, duc
3 3 4 4 4 3 3 3 3 3 3
Strategy: Simulation of work activity, paper/pencil, oral presentation.Tools: Appropriate hand tools, appropriate measur d tes a tulator.
Recognized by the Texas Skill Standards Board, July 13, 2004 28
KA 6.1 Identify, diagnose, install, maintain, and repair air conditioning systems.
KA 6.2 Identify, diagnose, install, maintain, and repair air distribution systems, condensate drain systems, and air filtration systems.
Texas Skill Standards Board
Recognized by the Texas Skill Standards Board, July , 2004
Criteria Identify mechrefrigeration systems; for example, walk-in coolers and freezers, reach-in cases, multiple evaporator systems, and packaged refrigeration systems. Install mech
ation ems; for
cases, multiple evaporator systemsand packaged refrigeration systems.
manufacturer’s specifications Knowledge and unders of alternalubricants Understanding of proper procedures for oxbrazing rig to braze in refrigerant lines
2-stage vacuum pump Micron gauge
KA7.1 Identify, install, maintain, and repair mechanical refrigeration systems.
Number7.1.1 anical
7.1.2 anical refriger systexample, walk-in coolers and freezers, reach-in
,
Knowledge and understanding of refrigeration systems Knowledge and understanding of charging, wiring, and recovery per EPA guidelines Knowledge and application of various measuring instruments and testing devices Ability to identify refrigerants appropriate to meet required temperature and per
tandingtive refrigerants and
y/acetylene
Appropriate hand tools VOM multimeter Ammeter Refrigerant manifold gauges Digital thermometer Electronic leak detector Oxy/acetylene brazing rig
Occupational Title: HVACR Technician Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems. Critical Work Function 7 Identify, install, maintain, and repair refrigeration systems
Occupational Skills, Knowledge and Conditions
Key Activities Performance Criteria Occupational Skills and Knowledge
Conditions
Those duties or task clusters that are necessary to perform each critical work
function.
Specific demonstrable performance and standards that indicate when the key
activity has been performed successfully.
Those skills and knowledge that are specific to the
occupation, such as technical processes or procedures
common across the occupation that are critical to the related
key activity.
Tools, resources and equipment necessary to carry
out key activities and their related performance criteria.
Criteria
Texas Skill Standards Board
7.1.3 Maintain mechanical refrigeration systems; for walk-in coole
example, rs and
ems,
s.
freezers, reach-in cases, multiple evaporator systand packaged refrigeration system
7.1.4 Repair mechanical refrigeration sysfor example,coolers and freach-in c
tems; walk-in reezers, es,
s.
asmultiple evaporator systems, and packaged refrigeration systemPost-service performance audit HVACR equipmindicates mechanical refrigeration system operating at or abmanufacturer's design specifications,
baselines. Knowledge and understanding
of refrigeration defrost ystems s
Ability to initiate defrost to determine if system is in proper operation
Appropria VOM multimeter Ammeter Digital thermometer Manifold gaug
7.1.5 of
ent
ove
benchmarks, and
KA7.2 Identify, install, maintain, and repair electric and hot gas defrost systems in refrigeration systems.
Knowledge and application of meter measurement Knowledge and interpretation
te hand tools
es
Number Criteria 7.2.1 Identify electric and
hot-gas defrost systems in refrigeration systems.
7.2.2 Install electric and hot-gas defrost systems in refrigeration systems.
Texas Skill Standards Board
7.2.3 nd
refrigers
Maintain electric ahot gas defrost systems in
ation ystems. etermineefrost timing
schedules with ustomer
Repair electric and hot-gas defrost ystems in efrigeration ystems. ost-service
performance audit f HVACR equip
and hot gas defrost ystems operation t or above
cturer’s design specifications, benchmarks, and baselines.
of pressure/temperature relationships
ime properly defrost cycles
Use pressure/temperature relationships to t
Number Criteria Knowledge and understanof ice makers
ding
ments evices
Appropriate hand tools
VOM multimeter Ammeter Gauge manifold and hoses 2-stage vacuum pump Electronic leak detector Micron gauge Oxy/acetylene brazing rig
Knowledge and application of various measuring instruand testing d Understanding of the proper procedures for oxy/acetylene brazing rig
7.2.4 D proper d
c7.2.5
srs
7.2.6 P
o ment indicates electric
s amanufa
KA7.3 Install, maintain, and repair flake and cube ice makers.
7.3.1 Install flake and cube ice makers.
7.3.2 Maintain flake and cube ice makers.
7.3.3 Repair flake and cube ice makers.
Recognized by the Texas Skill Standards Board, July 13, 2004 31
Post-service performance audit of HVACR equipment indicates flake and cube ice maker operation at or above manufacturer's design specifications,
7.3.4
Texas Skill Standards Board
benchmarks, and baselines.
Number Criteria Install water
coolers. Maintain water coolers. Repair water coolers. Post-service performance audit ofHVAindicates water coolers operation at or above manufacturer’s design specifications, benchmarks, and baselines.
Digital thermometer
KA7.4 Install, maintain, and repair water coolers. 7.4.1
7.4.2
7.4.3
7.4.4
CR equipment
Knowledge and understanding of water coolers Knowledge of appropriate testing gauges Understanding of the proper procedures for oxy/acetylene brazing rig
Appropriate hand tools Refrigerant manifold gauges and hoses 2-stage vacuum pump Air/acetylene brazing rig Leak detector Digital thermometer Refrigerant scale
KA7.5 Identify, install, maintain, and repair specific refrigeration system components used in commercial refrigeration.
Knowledge and understanding of refrigeration system accessories and controls Knowledge of appropriate testing gages Knowledge and interpretation of pressure/temperature relationships Understanding of superheat, sub-cooling, charging, and wiring as per EPA guidelines
Appropriate hand tools Refrigerant manifold gauges and hoses Digital thermometer
Recognized by the Texas Skill Standards Board, July 13, 2004 32
Identify specific refrigeration system components used in commercial refrigeration; for example, low ambient controls, evaporator and crankcase pressure regulators, etc.
Number
Number Criteria
Install specific refrigeration system components used in commercial refrigeration; for example, low ambient controls, evaporator and crankcase
7.5.1
7.5.2
Texas Skill Standards Board
pressure regulators, etc.
7.5.3 Maintain specific refrigeration system components used in commercial refrigerexamplecoand cran
at ambie
ntrols, okcase
pressure regulators, etc.
ion; for , low evaporat
nt r
7.5.4 Troubleshoot and replace if necessary
rcial
example, low ambient controls, evaporator and rankcas
etc
specific refrigeration system components use in commrefrigeration; for
d e
c e pressure regulators,
. 7.5.5 Post-service
performance audit of HVACindica
s
design specifications, benchmarks, and baselines.
R equipment tes refrigeration
system componentoperation at or above manufacturer's
Recognized by the Texas Skill Standards Board, July 13, 2004 33
Texas Skill Standards Board
Recognized by the Texas Skill Standards Board, July 13, 2004 34
Occupational Title: HVACR Technician Academic and Employability Knowledge and Skill Matrix CWF 7 Identify, install, maintain, and repair commercial refrigeration systems. Listening Speaking Using
Information and Communi- cations Technology
Gathering and Analyzing Information
Analyzing and Solving Problems
Making Decisions and Judgments
Organizing and Planning
Using Social skills
Adaptability Working in Teams
Leading Others
Building Consensus
Self and Career Develop-ment
Writing Reading Mathe-matics
Science
KA 7.1 Identify, install, maintain, and repair mechanical refrigeration systems. 3 3 4 4 4 3 3 3 3 3 3 3 3 3 3
KA 7.2 Identify, install, maintain, and repair electric and hot gas defrost systems in refrigeration systems. 3 3 4 4 4 3 3 3 3 3 3 3 3 3 3
KA 7.3 Install, maintain, and repair flake and cube ice makers. 3 3 4 4 4 3 3 3 3 3 3 3 3 3 3
KA 7.4 Install, maintain, and repair water coolers. 3 3 4 4 4 3 3 3 3 3 3 3 3 3 3
KA 7.5 Identify, install, maintain, and repair specific refrigeration system components used in commercial refrigeration. 3 3 4 4 4 3 3 2 3 3 3 3 3 3 3
Statement of Assessment Strategy: Simulation of work activity, paper/pencil, oral presentations. Tools: Appropriate hand tools, appropriate measuring instruments and testing devices, oxy/acetylene brazing rig, vacuum pump