HVAC 121

• Title: Basic Principles of HVAC*
• Number: HVAC 121
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites or corequisites: HVAC 123 or ELTE 123

Description:

This is a beginning course in heating, ventilation and air conditioning technology that is appropriate for HVAC majors and other interested students. Upon successful completion of this course, the student should be able to identify the function of the basic components of an air-conditioning system. Topics will include heat laws, refrigerants, oils and refrigeration cycles of residential and light commercial systems. In the lab, students will design, assemble and operate a working refrigeration system. Competencies will include brazing, wiring, evacuating and charging a system. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 3 hrs. lecture, 3 hrs. lab/wk.

I. Fundamentals of Refrigeration Theory
   A. Define temperature.
   B. Make conversions between Fahrenheit and Celsius scales.
   C. Describe molecular motion at absolute O.
   D. Define the British thermal unit.
   E. Describe heat flow between substances of different temperatures.
   F. Explain the transfer of heat by conduction, convection and
radiation.
   G. Define sensible heat, latent heat and specific heat.
   H. State atmospheric pressure at sea level and explain why it varies at
different elevations.
   I. Describe two different types of barometers.
   J. Explain psig and psia as they apply to pressure gages.

II. Matter and Energy
   A. Define matter.
   B. List the three states in which matter is commonly found.
   C. Define density.
   D. State Boyle’s Law.
   E. State Charles’ Law
   F. State Dalton’s Law as it relates to the pressure of different
gasses.
   G. Define specific gravity and specific volume.
   H. State two forms of energy important to the air conditioning (heating
and cooling) and refrigeration industry.
   I. Describe work and state the formula used to determine the amount of
work in a given task.
   J. Define horsepower.
   K. Convert horsepower to watts.
   L. Convert watts to British thermal units.

III. Refrigeration and Refrigerants
   A. State three reasons why ice melts in ice boxes.
   B. Describe applications for high-, medium-, and low-temperature
refrigeration.
   C. Describe the term “a ton of refrigeration”.
   D. Describe the basic refrigeration cycle.
   E. Explain the relationship between pressure and the boiling point of
water or other liquids.
   F. Describe the function of the evaporator or cooling coil.
   G. Explain the purpose of the compressor.
   H. List the compressors normally used in residential and light
commercial buildings.
   I. Describe the function of the condensing coil.
   J. State the purpose of the metering device.
   K. List refrigerants commonly used in residential and light commercial
refrigeration and air conditioning systems.
   L. List four characteristics to consider when choosing a refrigerant
for a system.
   M. List the designated colors for refrigerant cylinders for various
types of refrigerants.
   N. Describe how refrigerants can be stored or processed while
refrigeration systems are being serviced.
   O. Plot a refrigeration cycle on a pressure/enthalpy diagram.

IV. System Evacuation
   A. Describe the deep vacuum.
   B. Describe two different types of evacuation.
   C. Describe two different types of vacuum measuring instruments.
   D. Choose a proper high-vacuum pump.
   E. List some of the proper evacuation practices.
   F. Describe a high-vacuum single evacuation.
   G. Describe a triple evacuation.

V. System Charging
   A. Describe how refrigerant is charged into systems in the vapor and
the liquid states.
   B. Describe system charging using two different weighing methods.
   C. State the advantage of using electronic scales for weighing
refrigerant into a system.
   D. Describe two types of charging devices.

VI. Introduction to Automatic Controls
   A. Define bimetal.
   B. Make general comparisons between different bimetal applications.
   C. Describe the rod and tube.
   D. Describe fluid-filled controls.
   E. Describe partial liquid, partial vapor-filled controls.
   F. Distinguish between the bellows, diaphragm and Bourdon tube.
   G. Discuss the thermocouple.
   H. Explain the thermistor.

VII. Automatic Control Components and Applications
   A. Discuss space temperature control.
   B. Describe the mercury control bulb.
   C. Describe the difference between low- and high-voltage controls.
   D. Name components of low- and high-voltage controls.
   E. Name two ways motors are protected from high temperature.
   F. Describe the difference between a diaphragm and bellows control.
   G. State the uses of pressure-sensitive controls.
   H. Describe a high-pressure control.
   I. Describe a low-pressure control.
   J. Describe a pressure relief valve.
   L. Describe the functions of mechanical and electromechanical
controls.

VIII. Evaporators and the Refrigeration Systems
   A. Define high-, medium-, and low-temperature refrigeration.
   B. Determine the boiling temperature in an evaporator.
   C. Identify different types of evaporators.
   D. Describe multiple- and single-circuit evaporators.

IX. Condensers
   A. Explain the purpose of the condenser in a refrigeration system.
   B. Describe the differences in operating characteristics between
water-cooled and air-cooled
systems.
   C. Describe the basics of exchanging heat in a condenser.
   D. Explain the difference between a tube within a tube-coil type
condenser and a tube
within a tube-serviceable condenser.
   E. Describe the difference between a shell and coil condenser and a
shell and tube
condenser.
   F. Describe a wastewater system.
   G. Describe a re-circulated water system.
   H. Describe a cooling tower.
   I. Explain the relationship between the condensing refrigerant and the
condensing medium.
   J. Compare an air-cooled, high-efficiency condenser to a standard
condenser.

X. Compressors
   A. Explain the function of the compressor in a refrigeration system.
   B. Describe compression ratio.
   C. Describe four different methods of compression.
   D. State specific conditions under which a compressor is expected to
operate.
   E. Explain the difference between a hermetic compressor and
semi-hermetic compressor.
   F. Describe the various working parts of reciprocating and rotary
compressors.

XI. Expansion Devices
   A. Describe the three most popular types of expansion devices
   B. Describe the operating characteristics of the three most popular
expansion devices.
   C. Describe how the three expansion devices respond to load changes.

XII. Special Refrigeration Systems Components
   A. Distinguish between mechanical and electrical controls.
   B. Explain how and why mechanical controls function.
   C. Define low ambient operation.
   D. Describe electrical controls that apply to refrigeration.
   E. Describe off-cycle defrost.
   F. Describe random and planned defrost.
   G. Explain temperature-terminated defrost.
   H. Describe the various refrigeration accessories.
   I. Describe the low-side components.
   J. Describe the high-side components.

XIII. Domestic Refrigerators
   A. Define refrigeration.
   B. Describe the refrigeration cycle for household refrigerators.
   C. Describe the types, physical characteristics, and typical locations
of the evaporator,
compressor, condenser and metering device.
   D. Explain the various defrost systems.
   E. Describe how to dispose of the condensate.
   F. Discuss typical refrigerator designs.
   G. Explain the purpose of mullion and panel heaters.
   H. Describe the electrical controls used in household refrigerators.
   I. Discuss ice-maker operation.
   J. Describe various service techniques used by the refrigeration
technician.

XIV. Domestic Freezers
   A. Describe freezer burn.
   B. Discuss the construction of typical freezer cabinets.
   C. Identify three types of freezer evaporators.
   D. Describe two types of freezer compressors.
   E. Discuss two types of natural-draft condensers.
   F. Explain the function of the capillary tube in the freezer.
   G. Describe condenser efficiency relative to ambient air passing over
it.
   H. Explain procedures to defrost a freezer manually.
   I. Discuss procedures to remove spoiled food odors from the box.
   J. Describe procedures for moving upright and chest-type freezers.

XV. Room Air Conditioners
   A. Describe the various methods of installing window air conditioning
units.
   B. Discuss the variations in the designs of window and through the wall
units.
   C. List the major components in the refrigeration cycle of a window
cooling unit.
   D. Explain the purpose of the heat exchange between the suction line
and the capillary tube.
   E. Describe the heating cycle in the heat pump or reverse cycle room
air conditioner.
   F. Describe the controls for room air conditioning (cooling) units.
   G. Describe the controls for room air conditioning (cooling and
heating) units.
   H. Discuss service procedures for room air conditioners.
   I. List the procedures to be followed to determine whether or not to
install gages.
   J. State the proper procedures for charging a room air conditioner.
   K. List the types of expansion valves that may, under some conditions,
be substituted for the capillary tube.
   L. State the components that may require electrical service.

1. Textbook assignments will be made one class prior to their due
dates; unreasonably lengthy assignments will not be made. Read assignments
in the text before coming to class. Take notes during the lecture of
important points. Student participation in class is encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be
based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of project      40%
     Total                                100%   
Lab work will be graded according to progress and skill. Quizzes will be
given periodically.

Chapter and/or unit tests              40%
Lab assignments and periodical quizzes 40%
Final Exam                             20%
TOTAL                                 100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 123

• Title: Electromechanical Systems*
• Number: HVAC 123
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

This is a beginning course in electrical theory that is required for HVAC, electrical and power plant technology, but is appropriate for all interested students. Common components found in the HVAC industry are used to develop these skills. Upon successful completion of this course, the student should be able to identify electrical components and their relationships to the various repair and troubleshooting techniques. The materials in this course will prove useful to service technicians whose background in electricity is limited. The course includes material from basic electrical theory to troubleshooting complex electrical circuits. This course will provide practice in application of electrical theory as well as in the interconnection of components of heating and cooling systems. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 3 hrs. lecture, 3 hrs. lab/wk.

I. Basic Electricity
   A. Explain the atomic theory and its relationship to physical objects
and electron flow.
   B. Explain the flow of electrons and how it is accomplished.
   C. Explain electrical potential, current flow and resistance and how
each is measured.
   D. Explain electrical power and how it is measured.
   E. Explain Ohm’s law.
   F. Calculate the potential, current and resistance of an electrical
circuit using Ohm’s law.
   G. Calculate the electrical power of a circuit and the BTU/hour rating
of an electrical resistance heater.

II. Electric Circuits
   A. Explain the concepts of a basic electric circuit.
   B. Explain the characteristics of a series circuit.
   C. Explain the characteristics of a parallel circuit.
   D. Describe how series circuits are utilized as control circuits in the
air-conditioning industry.
   E. Describe how parallel circuits are utilized as power circuits in the
air-conditioning industry.
   F. Explain the relationship and characteristics of the current,
resistance and electromotive force in the series circuit.
   G. Explain the relationship and characteristics of the current,
resistance and electromotive force in a parallel circuit.
   H. Calculate the current, resistance and electromotive force in a
series circuit.
   I. Calculate the current, resistance and electromotive force in a
parallel circuit.
   J. Explain the characteristics of a series-parallel circuit.
   K. Describe how series-parallel circuits are utilized in the
air-conditioning industry.

III. Electric Meters
   A. Describe the use of the volt-ohm meter and clamp-on ammeter in the
heating, cooling and refrigeration industry.
   B. Explain the operation of the basic analog meter.
   C. Explain how analog electric meters transfer a known value in an
electric circuit to the meter movement.
   D. Describe the operation of an analog voltmeter.
   E. Describe the operation of an analog and a digital clamp-on ammeter.
   F. Describe the operation of an analog ohmmeter.
   G. Explain the operation of a digital volt-ohm meter.
   H. Give the advantages and disadvantages of the analog and digital
meters.
   I. Describe the conditions of resistance that can exist in an
electrical circuit in reference to continuity.
   J. Describe the source of energy for the operation of the analog
voltmeter, ammeter and ohmmeter.

IV. Component, Symbols of Circuitry of Air-Conditioning Wiring Diagrams
   A. Explain what electrical loads are and their general purpose in
heating, cooling and refrigeration systems.
   B. Give examples of common loads used in heating, cooling and
refrigeration systems.
   C. Identify the symbols of common loads used in heating, cooling and
refrigeration systems.
   D. Explain the purpose of the relays and contactors in heating, cooling
and refrigeration systems.
   E. Identify the symbols of relays and contactors in heating, cooling
and refrigeration systems.
   F. Explain the purpose of switches and the types used in heating,
cooling and refrigeration systems.
   G. Identify the symbols of switches and the types used in heating,
cooling and refrigeration systems.
   H. Identify the symbols and purpose of other miscellaneous controls in
heating, cooling and refrigeration systems.
   I. Identify the different types of wiring diagrams used in the industry
and the purpose of each.
   J. Read simple schematic diagrams.
   K. Read advanced schematic diagrams.

V. Alternating Current, Power Distribution and Voltage Systems
   A. Explain the basic difference between direct and alternating
currents.
   B. Explain how alternating current is produced.
   C. Explain the difference between single-phase and three-phase power
distribution systems.
   D. Explain inductance, reactance and impedance.
   E. Explain a basic power distribution system.
   F. Explain the common voltage systems.

VI. Installation of Heating, Cooling and Refrigeration Systems
   A. Explain the standard wire size as defined by the American Wire Gauge
(AWG).
   B. Give the advantages and disadvantages of copper and aluminum
conductors.
   C. Explain the factors that are considered when sizing an electrical
circuit conductor.
   D. Correctly size and install electrical conductors for circuits used
in the industry by the National Electrical Code and the manufacturer’s
instructions.
   E. Calculate the voltage drop in an electrical circuit.
   F. Explain the types of enclosures for disconnect switches that are
available.
   G. Explain the types, sizes and enclosures of disconnect switches that
are used in the industry.
   H. Explain the types of electrical panels that are used to distribute
electrical power to circuits in the structure.
   I. Install breakers in an electrical breaker panel.


VII. Basic Electric Motors
   A. Explain magnetism and the part it plays in the operation of electric
motors.
   B. Explain torque and the purpose of different types of single-phase
motors.
   C. Explain the operation of a basic electric motor.
   D. Describe the operation, install, reverse the rotation, if possible,
and diagnose problems in a shaded-pole motor.
   E. Describe the purpose of capacitors in the operation of a
single-phase motor and be able to explain the difference between a
starting and running capacitor.
   F. Correctly diagnose the condition of any capacitor and use capacitor
rules and be able to substitute a capacitor if a direct, replacement is
not available.
   G. Explain the operation, install, troubleshoot and repair, if
possible, split-phase and capacitor-start motors.
   H. Explain the operation , install, troubleshoot and repair, if
possible, permanent split-capacitor motors.
   I. Explain the operation, install, troubleshoot and repair, if
possible, capacitor-start-capacitor- run motors.
   J. Describe the operation, install, reverse and troubleshoot
three-phase motors.
   K. Determine the common, start and run terminals of a single-phase
compressor motor.

VIII. Components for Electric Motors
   A. Identify and explain the operation of motor-starting relays and
other starting components that are used on single-phase hermetic
compressor motors.
   B. Select the correct potential relay for an application with
information available on the potential relay to be replaced.
   C. Troubleshoot and install motor-starting relays on hermetic
compressor motors.
   D. Lubricate and identify the type of bearings used in electric
motors.
   E. Identify the type of motor drive used on industry applications.
   F. Calculate the variables in a v-belt drive application to obtain the
desired equipment rpm.
   G. Recognize and adjust a v-belt application to the proper tension and
alignment.

IX. Contactors, Relays and Overloads
   A. Explain the parts and the operation of contactors and relays.
   B. Explain the application of contactors and relays in control
systems.
   C. Correctly install a contactor or relay in a control system.
   D. Draw a schematic wiring diagram using contactors and/or relays to
control loads in a control system.
   E. Understand the types of applications of overloads.
   F. Troubleshoot contactors and relays.
   G. Identify the common types of overloads used to protect loads.
   H. Explain the operation of the overloads.
   I. Determine the best type of overload for a specific application.
   J. Draw schematic wiring diagrams using the proper overload to protect
loads.
   K. Troubleshoot common types of overloads.
   L. Explain the operation of a magnetic starter.
   M. Size the overload devices to be used in a magnetic starter for motor
protection.
   N. Wire a magnetic starter using switches, thermostats and push-button
stations.
   O. Troubleshoot magnetic starter and push-bottom stations.

X. Thermostats, Pressure Switches and Other Electric Control Devices
   A. Explain the purpose of a transformer in a control circuit.
   B. Size a transformer for a control circuit.
   C. Troubleshoot and replace a transformer in a residential
air-conditioning control circuit.
   D. Explain the basic function of a line and low-voltage thermostat in a
control system.
   E. Identify the common types of thermostats used in the industry.
   F. Draw schematic diagrams using line and low-voltage thermostats and
operating and safety controls.
   G. Install line and low-voltage thermostats on heating, cooling and
refrigeration equipment.
   H. Correctly set the heating anticipators and cooling anticipators, if
adjustable, on a residential low-voltage control system.
   I. Explain the modes of operation and be able to correctly set or
program a clock thermostat.
   J. Explain the function and operation of pressure switches.
   K. Install and correctly set the pressure switches in control systems
used as operating and safety controls.
   L. Troubleshoot pressure switches.
   M. Troubleshoot the following controls in control systems used in the
industry:
      1. Humidistat
      2. Oil safety switches
      3. Time-delay relays
      4. Time clocks
      5. Solenoid values

XI. Heating Control Devices
   A. Explain the purpose of the electrical controls in warm air and
hydronic heating applications that are necessary to safely operate and
maintain the desired temperature in a conditioned space.
   B. Describe the pilot safety controls and methods of ignition of the
burners in a gas furnace.
   C. Describe the operation of primary controls used to supervise the
operation of an oil burner.
   D. Draw a wiring diagram of an oil-fired, warm-air furnace.
   E. Draw a wiring diagram of a gas-fired, warm-air furnace.
   F. Explain the operation of an electric furnace or electric resistance
duct heater and the methods of control that are  commonly used.
   G. Draw the wiring diagram of an electric furnace.
   H. Troubleshoot a gas furnace.
   I. Troubleshoot an oil furnace.
   J. Troubleshoot an electric furnace or electric resistance duct
heater.

XII. Troubleshooting Electric Control Devices
   A. Troubleshoot electric motors.
   B. Troubleshoot contactors and relays.
   C. Troubleshoot overloads.
   D. Troubleshoot thermostats.
   E. Troubleshoot pressure switches.
   F. Troubleshoot transformers.
   G. Troubleshoot electric heating controls.
   H. Troubleshoot gas heating controls.
   I. Troubleshoot oil heating controls.

XIII. Air-Conditioning Control Systems
   A. Explain the electrical circuitry of a residential condensing unit.
   B. Make all electrical connections to install a condensing unit in a
residential application.
   C. Troubleshoot a residential condensing unit.
   D. Describe the basic control systems used in residential
air-conditioning controls systems.
   E. Draw the control systems used in light commercial air-cooled and
water-cooled packaged units.
   F. Make all electrical connections for a complete residential
installation.
   G. Draw the control systems used in gas heat electric air-conditioning
packaged units.
   H. Troubleshoot residential air-conditioning system.

XIV. Control Systems: Circuitry and Troubleshooting
   A. Draw basic control circuits, including compressor, evaporator fan
motor, condenser fan motor and safety control circuits.
   B. Describe the control circuitry used in residential applications.
   C. Draw the basic circuitry of control systems used on light commercial
and commercial and industrial applications.
   D. Identify the method of control for commercial and industrial
systems.
   E. Describe the procedures used in troubleshooting conditioned air
systems.
   F. Describe the best troubleshooting procedures to use for a particular
problem.
   G. Troubleshoot residential conditioned air control systems.
   H. Troubleshoot basic light commercial conditioned air control
systems.

XV. Solid-State Controls and Systems
   A. Identify and describe the operation of basic electronic system
components.
   B. Identify and describe the operation of common one-function
electronic controls that are used in the industry.
   C. Troubleshoot one-function electronic controls.
   D. Describe the function and operation of an electronic defrost board
used in a heat pump.
   E. Describe the operation of an electronic motor protection module used
on motors.
   F. Troubleshoot electronic defrost modules.
   G. Troubleshoot electronic motor protection modules.
   H. Explain and troubleshoot basic electronic control systems used in
residential conditioned air systems.
   I. Identify electronic control systems used in commercial and
industrial equipment and structures.

1. Textbook assignments will be made one class prior to their due
date; unreasonable length assignments will not be made. Read assignments
in the text before coming to class. Take notes during the lecture of
important points. Student participation in class is encouraged.

2. Lab Sessions : Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of project      40%

Lab work will be graded according to progress and skill. 

Quizzes will be given periodically.
Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.

Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor

HVAC 124

• Title: Equipment Selection and Duct Design*
• Number: HVAC 124
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify techniques and procedures used in the residential construction industry to determine proper sizing of HVAC equipment and ducts to meet the requirements for a high-quality, comfortable climate in terms of heating, cooling, humidifying, dehumidifying, ventilation and air cleaning or filtering. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 3 hrs. lecture, 3 hrs. lab/wk. This course is the same as EPRM 124; do not enroll in both.

I. Basic Principles
   A. Basic laws of physics
   B. U values
   C. Table 21 – approximate temperature of unconditioned spaces
   D. Comfort chart
   E. Residential design procedure
   F. Comparison of load calculation methods at ASHRAE design conditions

II. Heating
   A. Outdoor and indoor design temperatures
   B. Calculating manual J heating loads
   C. Door and wall U values
   D. Below grade R and U values
   E. Table 5 assumptions
   F. Appendix 5 calculation
   G. Winter air change estimate
   H. Calculation procedure A
   I. ASHRAE 971/2% and 21/2% design temperatures

III. Cooling
   A. Outdoor design temperature, indoor design condition
   B. Design grains
   C. Indoor, outdoor humidity
   D. Calculating manual J. cooling loads
   E. Transmission gains for opaque surfaces
   F. Glass transmission and solar gains
   G. Low e glass, integral blind, external shade screens, skylights
   H. Overhangs, internal loads, infiltration loads, duct loss
   I. Ventilation requirements
   J. Summer air change estimate
   K. Calculation procedures B, C, and D
   L. Rating and swing multiplier (RSM)
   M. Equipment size
   N. ASHRAE 971/2% and 21/2% design temperature
   O. Outdoor temperature vs. time of day
   P. Hourly ETDs for walls and roof
   Q. Hourly wall HTMs vs. manual J. wall HTM
   R. Hourly roof HTMs vs. manual J. roof HTM
   S. Equipment load and incidental solar
   T. Incidental solar radiation
   U. Hourly glass loads vs. Manual J glass loads

IV. Special Applications
   A. Electronic air cleaners
   B. Humidifiers
      1. Direct
      2. Re-circulating
   C. Measurement of CFM
      1. Temperature difference
      2. Pressure difference
      3. Velocity difference

V. Equipment Selection
   A. Cooling equipment selection
   B. Sensible and latent loads
   C. Equipment performance data
   D. Air cooled equipment
   E. Water cooled (ground water) equipment
   F. Indoor wb temperature
   G. Air cooled, no ventilation
   H. Air cooled, including ventilation
   I. Water cooled (ground water) equipment
   J. Heat pump selection
   K. Air-source, no ventilation
   L. Water source, outdoor air ventilation
   M. Add on heat pump.
   N. Furnace and “A” coil selection
   O. Example—air cooled, no ventilation
   P. Working with actual performance data
      1. York
      2. Carrier
      3. Lennox
      4. Coleman
   Q. ARI certification date
   R. Example – estimating equipment performance using ARI data
   S. Balance point - thermal
   T. Balance point - economic

VI. Air Side Design
   A. Residential duct design
      1. Extended plenum
      2. Reducing plenum
      3. Radial
      4. Flexible
   B. Supply CFM
   C. Two speed fan operation
   D. Example – calculation of design CFM values (furnace and “A”
coil)
   E. Single speed fan operation
   F. Fan curves and duct system curves
   G. Blower performance data
   H. Selecting the operating point
   I. The friction chart
   J. Duct slide chart
   K. Correction for duct materials
   L. Friction rates
   M. Fitting losses
      1. Turbulence
      2. Bead spots
   N. Branch take-off fittings
   O. Flexible duct junction boxes
   P. Computerized calculations
   Q. Manual D duct sizing shortcuts
   R. Friction chart exercises
   S. Room air distribution
   T. Two speed fan operation
   U. Ceiling terminals
   V. High side wall terminals
   W. Low side wall terminals
   X. Return grilles
   Y. Manual D duct sizing shortcuts
   Z. Estimating friction losses for fiberglass duct systems
      1.. Flexible duct systems and high supply terminals
      2. Branch take-off fittings for extended plenum duct systems

VII. Computer Applications
   A. Energy conservation standards and codes
   B. Useful sales and marketing tool
   C. Range of application
   D. Energy calculations
   E. Right J program
   F. Right D program

1. Participation – Much of the class material will be taught with
experiential concepts. Your class participation in these experiences is
essential.
2. Late Work – Late work will be accepted with a 50% penalty. Please
discuss these occasions with the course instructor. All exams must be made
up within one week of the original exam date.
3. Completed Papers – I expect to return all written material one period
after it is handed in. Students wishing to have Final Tests returned to
them should hand in a self-addressed stamped envelope for that purpose.

METHODS OF EVALUATION:
Periodic quizzes and Chapter tests 40%
Final Test                         20%
Homework                           40%
                                  100%

HVAC 125

• Title: Energy Alternatives*
• Number: HVAC 125
• Effective Term: Spring/Summer 2014
• Credit Hours: 2
• Contact Hours: 2
• Lecture Hours: 2

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

Upon successful completion of this course, the student should be able to identify diverse methods of alternate energy production. Some of the technologies that will be discussed are wind energy, photoelectric energy, nuclear energy, hydroelectric energy, biomass and alternate fuel vehicles. Students will understand the advantages of using various alternate energy technologies, the effects or by-products of each and the problems that might be encountered. Some student research will be included in the context of the course. Emphasis will be on the most promising or effective alternate energy technologies available. 2 hrs. lecture/wk.

I. Energy Supplies and Systems
   A. Define energy.
   B. List the forms of energy.
   C. Explain energy conversion.
   D. List the types of resources.
   E. Explain energy mix.
   F. Forecast energy growth patterns.
   G. List the factors in an energy crisis.

II. Energy Consumption
   A. List the energy sectors within society.
   B. List the energy use percentages within each sector.
   C. Explain current growth patterns and trends.
   D. Describe some specific applications.
   E. Define common energy terminology.

III. Types of Energy
   A. Coal
      1. List several coal characteristics.
      2. List the three types of coal.
      3. List the availability and location of coal resources.
      4. Explain the economic and environmental problems with using coal.
      5. Explain coal gasification and liquefaction.
   B. Petroleum Energy
      1. List the availability and location of supplies of oil.
      2. Define oil exploration.
      3. Describe several methods of oil production.
      4. Describe the following types of oil transportation.
         a. Pipeline
         b. Water transportation
         c. Tank trucks and railroad cars
      5. Explain oil refining.
         a. Describe the characteristics.
         b. List several refining processes.
      6. List several oil products and their chemistry.
      7. Define oil shale.
   C. Natural Gas Resources
      1. Explain the characteristics of these types of gases:
         a. Natural gas
         b. Liquid petroleum gas
      2. Compare the heating value of LPG and natural gas.
      3. Describe the associated technology related to:
         a. Distribution and storage of natural gas
         b. Petrochemical industries
   D. Nuclear Energy
      1. Explain the basic chemistry of nuclear energy.
      2. Explain the nuclear fuel cycle, including:
         a. Mining
         b. Milling
         c. UF6 Production
         d. Enrichment
         e. Fuel fabrication
      3. List the types of reactors.
      4. Discuss nuclear waste in terms of:
         a. Characteristics
         b. Waste fuel
         c. Storage of waste.
         d. Volume of waste
         e. Nuclear waste cycle
   E. Hydroelectricity
      1. List the advantages of hydroelectric power.
      2. Discuss the present and future of large-scale hydroelectric
stations.
      3. Define pumped storage plants.
      4. Explain small-scale hydroelectric generation.
      5. List the environmental problems associated with dams and
reservoirs.
      6. Discuss the comparative regional potential.
   F. Ocean Energy Resources
      1. Explain tidal power.
      2. Define Ocean Thermal Energy Conversion (OTEC).
      3. Describe wave energy.
      4. Define ocean current power.
      5. Discuss salinity gradient power.
      6. Discuss ocean bioconversion.
   G. Geothermal Energy
      1. List the types and uses of geothermal energy.
      2. Discuss geothermal resources development.
      3. List environmental considerations.
      4. Describe the regional potential of this resource in the United
States.
   H. Biofuels
      1. Define gasohol.
      2. List the uncertainties concerning gasohol.
      3. Define biomass and energy farms.
      4. Explain how to get energy from waste.
      5. Discuss the regional advantages.
   I. Space Base Power
      1. List the sources of energy possible from space including:
         a. Nuclear
         b. Sunlight
         c. Microwave
         d. Artificial moons
         e. Fuel cells
   J. Wind Energy
      1. Describe using wind as a resource.
      2. Identify places where small wind machines would work.
      3. Describe large wind electrical systems.
      4. List the environmental and economic considerations.
      5. Describe regional advantages for wind power.
   K. Direct Solar Energy
      1. Explain solar collection.
      2. Describe solar heating systems.
      3. List the properties needed for solar storage systems.
      4. Describe solar cooling systems.
      5. Explain how solar photovoltaic systems work.

IV. Energy Conversion and Cogeneration
   A. Explain the concept of energy conversion.
   B. Define common energy converter terminology.
   C. List the chemical to thermal to mechanical converters.
   D. Explain the basic electrical principles.
   E. Explain how mechanical to electrical conversion-generators work.
   F. Explain how electrical to mechanical conversion-motors work.

V. Energy Storage
   A. Explain the concept of energy storage.
   B. Discuss battery storage technology.
   C. Discuss hydrogen storage technology.
   D. Discuss alternative storage technology.

VI. Energy Conservation
   A. Explain the objectives of energy conservation.
   B. Define energy conservation in the residential/commercial sector.
   C. Define energy conservation in the industrial sector.
   D. Define energy conservation in the transportation sector.

Periodical Quizzes and Chapter Tests 40%
Final Test                           20%
Report (2 x 20%)                     40%
Total                               100%

HVAC 127

• Title: Residential Systems: Heating*
• Number: HVAC 127
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify all the components and accessories and their relation to the functions of residential heating systems. Topics covered will be natural gas, propane, oil, forced air and hydronic-types of equipment. Emphasis will be on the electrical diagrams and mechanical principles of operation of these systems. Practical instruction in service diagnosis procedures and techniques for efficient operation, maintenance, troubleshooting and repair of these systems make up the lab portion of the course. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 3 hrs. lecture, 3 hrs. lab/wk.

I. Rank the following skills in order of importance to the serviceman
from the company’s point of view and the customer’s point of view.
   A. Critical thinking.
   B. Technical expertise.
   C. Customer relations.
   D. Marketing.

II. Working with Energy.
   A. List common safety rules and procedures for an HVAC service
technician.
   B. Explain heat transfer.
   C. Explain Charles law.
   D. Explain Boyles law.

III. Using electrical instruments demonstrate how to use a VOM.
   A. Exercise: Take Ampmeter readings on all scales.
   B. Exercise: Take a megger reading on several compressors.
   C. Explain how record keeping of megger reading can predict motor
failure.
   D. Exercise: Use a capacitor tester on start and run capacitors.

IV. Troubleshooting electrical check sheet.
   A. Describe the elements of troubleshooting.
   B. List the basic steps of the troubleshooting approach.
   C. Use test equipment.
   D. Describe the hopscotch method, both English and Hebrew.
   E. Exercise: Diagnose three faults each in 11 training boards, each
with a different set of three faults.
   F. Exercise: Troubleshoot 15 common problems in 15 different furnaces.

V. Describe the theory of operation for residential gas fired furnaces;
70%, 80% and 90% (condensing).
   A. Explain using natural gas as a fuel.
   B. Explain using LP gas as a fuel.
   C. Exercise: Disassemble and reassemble to operating condition three
different types of gas fired furnaces.
   D. Discuss the pilot burner and its safety controls.
   E. Describe the operation of combination gas valves.
   F. Describe the operation of heat exchangers.
   G. Describe the operation of furnace blowers and controls.
   H. Describe the operation of temperature limit switches.
   I. Discuss when millivolt systems were used.
   J. Discuss when automatic flue dampers are used.
   K. Discuss when electronic ignition systems are used.
   L. List the sequence of operation for induced draft furnaces.
   M. List the sequence of operation for condensing furnaces.
   N. Compile a furnace tune-up check sheet.

VI. Calculate venting system sizes.
   A. Describe the theory of operation of the venting system.
   B. Describe draft diverters.
   C. Describe stack effect.
   D. Describe condensation in vent stacks and how to prevent it.
   E. Size a vent for a single appliance.
   F. Size combined vents.
   G. Calculate location of top of flue stack in relation to various roof
pitches and heights.
   H. Exercise: Add a power venting kit to a flue.

VII. Describe the theory of operation for residential oil fired furnaces.
   A. Describe the operation of oil as a fuel.
   B. Describe the operation of fuel oil burners.
   C. Describe the operation of burner motor.
   D. Describe the operation of primary control.
   E. Describe the operation of cadmium flame detectors.
   F. Describe the operation of stack detectors.
   G. Exercise: Perform burner maintenance.
   H. Exercise: Perform checkout procedures.
   I. List the safety precautions for oil storage tanks.
   J. Compile a oil fired furnace tune-up check sheet.

VIII. Describe the theory of operation of hydronic heating systems.
   A. List the component parts of operation.
   B. Exercise: Perform maintenance and service of hydronic heating system
on the trainer.

IX. Discovering carbon monoxide generation in the home.
   A. Discuss dispersion patterns.
   B. Discuss diagnosis CO poisoning.
   C. Discuss prevention of CO production.
   D. Discuss health effects of CO.
   E. Exercise: Perform first response procedures for CO poisoning.
   F. Discuss when medical referral is necessary.
   G. List codes applicable to CO.
   H. Describe how various CO detectors work.

X. Describe the theory of operation of electronic air cleaners.
   A. Describe how the power supply works.
   B. Describe how the cells collect.
   C. Troubleshoot faults in an EAC.

XI. Describe how customer service keeps clients.
   A. Deal with the external customer.
   B. Deal with the internal customer.
   C. Deal with the irate customer.
   D. Perform a furnace tune-up at two customer’s homes.

LAB OBJECTIVES:
Title: Trace a 24V Electrical Circuit
Objective: Given a 24V circuit and voltmeter, check the components and
wiring of the circuit.

Title: Check a 120V System with a 24V Control Circuit
Objective: Given a complete system powered by 120V, controlled by a 24V
circuit, and the necessary tools and instruments, check and service both
circuits to approved standards.

Title: Check, Operate and Adjust a Hydronic Heating System
Objective: Given a fully hydronic heating system, check and adjust to
provide proper water circulation and water temperature.

Title: Remove, Test and Replace an Oil Burner Motor
Objective: Given a warm furnace, remove the oil burner motor, check and
install a new replacement motor.

Title: Check, Operate and Adjust a Gas-Fired Warm Air Heating System
Objective: Given a gas-fired warm air heating system, adjust and operate.

Title: Make a Stack Flue Gas Analysis
Objective: Given a gas furnace, determine the efficiency of the furnace
through the use of instruments.

Title: Operate, Disassemble, Inspect, Reassemble, and Operate an Up-flow
Gas Furnace
Objective: Given an up-flow gas furnace be able to operate, disassemble,
inspect and reassemble.

Title: Operate and Tune Up an Electric Heating System
Objective: Given a conventional forced warm air electric resistance
heating system, check, adjust and operate.

Title: Install a Power Humidifier in a Duct System
Objective: Given a duct-type warm air heating system, install a power
humidifier, install a humidistat, and adjust the humidifier to give a
correct operation.

Title: Locate Trouble in a Gas Furnace System
Objective: Given a warm air furnace with gas burner, determine the
location of trouble in the system.

Title: Install and Operate a Gun Type Oil Burner
Objective: Given a furnace designed for use with an oil burner, install
the oil burner and
operate the furnace.

Title: Remove, Clean and Replace an Oil Nozzle
Objective: Given a furnace with an oil burner, remove the burner nozzle,
clean, replace and operate the burner.

Title: Remove, Test and Install an Oil Burner Primary Control
Objective: Given a warm air oil furnace, replace the oil burner primary
control by disconnecting the inoperative one, testing and installing the
new one.

Title: Replace a Pump on a Hydronic System
Objective: Given a forced circulation hydronic heating system, remove a
faculty pump and install a replacement.

Title: Locate Trouble in an Oil Burner System
Objective: Given an oil burner, find trouble in the system and correct
it.

Title: Install and Operate an Atmospheric Gas Burner and Pilot Light
Objective: Given an atmospheric gas burner warm air furnace, start and
operate the system and adjust the burner.

Title: Tune Up a Fan-Assisted Type Gas Burner with Electronic Spark
Ignition
Objective: Given a blower type gas burner having electronic spark
ignition, operate the system and adjust the burner.

Title: Check and Connect a Heating Thermostat
Objective: Given a 24V control system, draw the wiring diagram, properly
check and connect a heating thermostat, and be able to obtain a desired
heating temperature range.

Title: Convert a Natural Gas Furnace to a Propane Furnace
Objective: Given a propane conversion kit, install it in an operating gas
furnace and then operate with propane.

1. Textbook assignments will be made one class prior to their due
dates: assignments of unreasonable length will not be made. Read
assignments in the text before coming to class.  Take notes during the
lecture of important points. Student participation in class is
encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on
the following criteria:
   a. Ability to work independently 15%
   b. Answers to lab study questions 15%
   c. Ability to work neatly and accurately 15%
   d. Ability to work productively 15%
   e. Successful completion of project 40%

Lab work will be graded according to progress and skill. Quizzes will be
given periodically.

Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 137

• Title: Residential Systems: Air Conditioning*
• Number: HVAC 137
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify all the components and accessories and their relation to the functions of residential air conditioning systems. Topics covered will include electric and natural gas air conditioner condensing units, metering devices, evaporation coils, and refrigerants. Electrical diagrams, psychrometric charts and techniques for efficient operation, maintenance, troubleshooting and repair of these systems make up the laboratory portion of the course. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 3 hrs. lecture, 3 hrs. lab/wk.

I. Explain comfort using the psychrometrics charts.
   A. Identify the factors that make up the feeling of comfort.
   B. Describe how the body uses food energy.
   C. Describe the three ways the body loses heat and the corresponding
winter/summer comfort effects.
   D. Draw a psychrometric chart.
   E. Draw the comfort chart on a psychrometric chart.
   F. Measure the moisture in air both indoors and outdoors.
   G. Measure superheated gases in air.
   H. Calculate relative humidity.
   I. Measure the dry-bulb and wet-bulb temperature both indoor.
   J. Chart the dew point temperature on a psychrometric chart.
   K. Explain coil lines on the psychrometric chart.
   L. Use the psychrometric chart to plot and calculate the following:
      1. Total heat
      2. Humidity ratio
      3. Enthalpy
      4. Sensible heat ratio
      5. Air conditioning process
      6. Reference point
   M. Problem solving: Use the psychrometric chart to solve the
following:
      1. Mixed air temperature problems.
      2. Leaking RA ducts.
      3. Steam leak in heat exchange.
      4. Amount of reheat required.
      5. Total air flow.
      6. Total A/C load.

II. Define refrigeration as applied to air conditioning.
   A. Explain the refrigeration cycle typical for comfort cooling.
   B. Describe the five main structural heat gain areas.
   C. Describe the conditions that allow evaporative cooling to work.
   D. Compare and contrast refrigerated cooling and air conditioning.
   E. List the functions and operating characteristics of the evaporator.
   F. Explain how the functions of the evaporator affect comfort.
   G. Differentiate the design conditions for the three regions of the
USA.
   H. Choose the evaporator application that is best for the three
regions.
   I. Choose the compressor that is best for the three regions.
   J. List the advantages of a reciprocating compressor.
   K. Explain how compressors change speeds (rpm).
   L. Identify what cools the compressor and motor.
   M. Exercise: Install new compressor mountings.
   N. Exercise: Rebuild a hermetic compressor.
   O. List the advantages of the rotary compressor.
   P. List the advantages of the scroll compressor.
   Q. List the functions and operating characteristics of the condenser.
   R. Select when to use side-air-discharge condensing units.
   S. Select when to use top-air-discharge condensers.
   T. Describe how condenser coil design has changed since 1950.
   U. Calculate the SEER for high-efficiency condensers.
   V. Describe how cabinet design has changed since 1950.
   W. Explain the three types of expansion devices.
   X. Exercise: Repair two air-side components.
   Y. Compare and contrast installation procedures of five manufacturers.
   Z. Compile an air conditioning tune-up check sheet.

III. Explain how the components in a typical air conditioning controls
system operates.
   A. List the components and controls in a typical air conditioning
system.
   B. Identify the controls for prime movers – compressors and fans.
   C. List the functions and operating characteristics of low-voltage
control systems.
   D. Give the history of residential central air conditioning controls.
   E. Generalize the economics of equipment design.
   F. List the sequence for operating controls for older air-cooled
systems
   G. List the sequence for safety controls for older air-cooled systems.
   H. List the sequence for operating controls for modern equipment.
   I. List the sequence for safety controls for modern equipment.
   J. Exercise: Unwire, rewire and operate a working control package.
   K. Generalize the operation of electronic controls in air conditioning
equipment.
   L. Exercise: Measure saturation temps in pressures.
   M. Use absolute pressure to calculate compressor ratios.
   N. Exercise: Install a desuperheater.
   O. Exercise: Measure the head pressure and use it to calculate
sub-cooling.
   P. Exercise: Measure the suction pressure and use it to calculate
super-heat.
   Q. Exercise: Adjust the water system flow rate to maintain ideal heat
pressure.
   R. Exercise: Measure indoor air system flow rates by the pressure drop
method.
   S. Exercise: Measure indoor air system flow rate by the exit velocity
method.
   T. Exercise: Measure indoor air system flow rate by the temp rise
method.
   U. Calculate indoor to balance the air flow in a duct system.

IV. Maintaining Typical Operating Conditions
   A. Describe safe mechanical operating conditions.
   B. Assess how relative humidity and the load works together.
   C. Analyze the system component relationships under load changes.
   D. Exercise: Measure the evaporator operating conditions.
   E. Summarize high evaporator load and a cool condenser and how it
affects normal operating temps.
   F. Characterize the grades of equipment available to install.
   G. Exercise: Read the documentation with the unit.
   H. Calculate a reference point on unknown equipment.
   I. Describe the metering devices for high-efficiency equipment.
   J. Calculate equipment efficiency rating.
   K. Exercise: Measure typical electrical operating conditions.
   L. Match the units to the correct power supplies.
   M. Exercise: Startup the equipment and measure all data.
   N. Find a point of reference for an unknown motor.
   O. Determine the compressors running load amperage.
   P. Determine the compressors rate load amperage.
   Q. Assess how high voltage affects the compressor and current draw.
   R. Assess how low voltage affects the compressor and current draw.
   S. Exercise: Measure current draw and the two-speed compressor.
   T. Exercise: Disassemble and reassemble to operating condition two air
conditioning units.

V. Troubleshooting the air conditioning system.
   A. Generalize all the electrical faults in troubleshooting.
   B. Generalize all mechanical faults in troubleshooting.
   C. Exercise: Hook up a gage manifold set.
   D. Determine when to connect the gages.
   E. Interpret low-side gage readings.
   F. Interpret high-side gage readings.
   G. Exercise: Take temperature readings.
   H. Design charging procedures in the field.
   I. Exercise: Practice electrical troubleshooting on air conditioner
trainers.
   J. Exercise: Find compressor overload problems.
   K. Exercise: Follow compressor electrical checkup procedures.
   L. Troubleshoot the circuit electrical protectors – fuses and
breakers.

VI. Generalize the operating principles of commercial refrigeration.
   A. Explain defrosting.
   B. Describe condensing refrigerant.
   C. List the sanitation requirements.
   D. Explain accumulators.
   E. Generalize how the electrical controls operate on ice makers.
   F. Explain the maintenance procedures of a ice maker.

VII. Measuring air circulation.
   A. Figure % of air re-circulation.
   B. Interpret fan curves from the charts.
   C. Exercise: Use the pilot tube to measure and calculate the
following.
      1. Static pressure.
      2. Velocity pressure.
      3. Total pressure.

VIII. Identify the components in typical circuits and controls.
   A. Describe the purpose, function and operating characteristics of
contacts.
   B. Describe the purpose, function and operating characteristics of
transformers.
   C. Describe the purpose, function and operating characteristics of
overloads.
   D. Describe the purpose, function and operating characteristics of lock
out relays.
   E. Exercise: Install add on controls for EAC’s.
   F. Exercise: Install and operate hard start kits.

IX. Explain the purpose of evacuation and dryers.
   A. Describe how air gets into a system.
   B. Describe how moisture gets into a system.
   C. List the triple evacuation procedures.
   D. Exercise: Make the connections and perform a triple evacuation.

X. Assemble copper tubing by brazing and leaks testing the joints.
   A. List the testing methods to determine leaks.
   B. Describe the materials used in brazing, advantages and
disadvantages.
   C. Describe the methods of cleaning joints.
   D. Describe the purpose of fluxes.
   E. Exercise: Find leaks using the three leak detection methods.
   F. Exercise: Repair leaks in a brazed joint.

XI. Describe the lubrication system in an air conditioning system.
   A. Match the oils to the proper refrigerants.
   B. Exercise: Grease the bearing in an air conditioning system.
   C. Compare and contrast slugging and logging.

XII. Describe the functions, advantages and operating characteristics of
the following bearings.
   A. Sleeve
   B. Roller
   C. Thrust
   D. Exercise: Install each kind of replacement bearings.
   E. Exercise: Analyze bearing failures.

XIII. Describe how customer service keeps clients.
   A. Deal with the external customer.
   B. Deal with the internal customer.
   C. Deal with the irate customer.
   D. Perform a air conditioning tune-up at three customer homes.

XIV. Describe the theory of oxyacetylene welding.
   A. List safety precautions when using an oxyacetylene torch.
   B. Describe the materials used in oxyacetylene welding.
   C. Describe the procedures for oxyacetylene welding.
   D. Exercise: Weld two coupons together with a butt weld.
   E. Exercise: Weld two coupons together with a T weld.

LAB OBJECTIVES: Title: Measure relative humidity and dew point
Objective: Given a wet-bulb and dry-bulb thermometer, obtain a 100%
accurate reading.

Title: Trace a 24V Electrical Circuit
Objective: Given a 24V circuit and voltmeter, check the components and
wiring of the circuit.

Title: Check a 120V System with a 24V Control Circuit
Objective: Given a complete system powered by 120V, controlled by a 24V
circuit, and the necessary tools and instruments, check and service both
circuits to approved standards.

Title: Locate Trouble in a Window-Type Air Conditioner
Objective: Given a window-type comfort cooler, locate and repair any
trouble and obtain the proper operation.

Title: Locate Trouble in a Residential Central Comfort Cooling System
Objective: Given a malfunctioning residential central comfort cooling
system, diagnose, repair and operate.

Title: Check and Connect a Combination Thermostat
Objective: Given a 24V combination heating and cooling system, determine
if system is properly operating.

Title: Use a Charging Table to Check the Charge in a Capillary Cooling
System
Objective: Given a charging table and central comfort cooling system,
determine if system is properly charged.

Title: Frozen Compressors
Objective: Given a 240V 10 compressor, electrically rewire it to run
backwards for 2 seconds.

Title: Condensing Units
Objective: Change out a condensing unit.

Title: Compressor
Objective: Change out a compressor.

Title: Air Conditioning Tune-Up
Objective: Practice completing an air conditioning check sheet on six
different air conditioning systems.

1. Textbook assignments will be made one class prior to their due
dates: assignments of unreasonable length will not be made. Read
assignments in the text before coming to class.  Take notes during the
lecture of important points. Student participation in class is
encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
   a. Ability to work independently         15%
   b. Answers to lab study questions        15%
   c. Ability to work neatly and accurately 15%
   d. Ability to work productively          15%
   e. Successful completion of project      40%

Lab work will be graded according to progress and skill. Quizzes will be
given periodically.
Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 143

• Title: Reading Blueprints and Ladder Diagrams*
• Number: HVAC 143
• Effective Term: Spring/Summer 2014
• Credit Hours: 2
• Contact Hours: 2
• Lecture Hours: 2

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

Upon successful completion of this course, the student should be able to identify all types of industrial plant blueprints. Included will be a discussion of machine parts and drawings as well as hydraulic, pneumatic, piping and plumbing, electrical, air conditioning and refrigeration drawings. Sketching used in industrial plants will be covered. A portion of the course will cover the types and use of ladder logic and various components such as input, output and diagrams. The structure, symbols and terminology of ladder logic diagrams will be introduced. Logic and decision-making functions are presented, along with practice in creating ladder logic diagrams. 2 hrs. lecture/wk.

I. Discuss all aspects of the following basic principles:
   A. Importance of blueprints
   B. Purpose of blueprints
   C. Detail drawings
   D. Notes and dimensions
   E. Assembly drawings
   F. Auxiliary views
   G. Sections
   H. Pictorial drawings

II. Identify the functions and operational characteristics for the
following machine parts:
   A. Six simple machines
   B. Screw threads
   C. Drawing of screw threads
   D. Dimensions of screw threads
   E. Heads
   F. Rivets
   G. Pins
   H. Keys
   I. Springs
   J. Gears
   K. Bearings
   L. Belts
   M. Pulleys

III. Using machine drawings identify and describe all aspects of the
following:
   A. Machine tools
   B. Compound reset--exploded view, assembly drawing, detail drawing,
comparison with photograph
   C. Clutch-break control--exploded view, assembly drawing, headstock
assembly drawing, drafting technique for gear trains, reading and assembly
drawing

IV. Using sheet metal drawings identify and describe all aspects of the
following:
   A. Ventilation systems
   B. Ductwork
   C. Parallel development
   D. Miter development
   E. Extra metal for assembly

V. Using building drawings identify and describe all aspects of the
following:
   A. Using building drawings
   B. Building and building sites
   C. Symbols and conventions
   D. Plat
   E. Site plan
   F. Floor plan
   G. Working drawings

VI. Using hydraulic and pneumatic drawings identify and describe all
aspects of the following:
   A. Fluid systems
   B. Pascal’s law
   C. Multiplying forces
   D. Pistons and cylinders
   E. Fluid system components
   F. Hydraulic and pneumatic systems

VII. Using piping and plumbing drawings identify and describe all aspects
of the following:
   A. Importance of piping systems
   B. Piping and plumbing materials
   C. Kinds of joints
   D. Drawings
   E. Joining metal pipes

VIII. Using electrical drawings identify and describe all aspects of the
following:
   A. Importance of electrical drawings
   B. Electric power
   C. Controlling electric power
   D. Electrical drawings
   E. Electrical wirings
   F. Using electrical drawings

IX. Using air conditioning and refrigeration drawings identify and
describe all aspects of the following:
   A. Principles of refrigeration
   B. Component drawings
   C. Principles of air conditioning
   D. Air conditioning systems

X. Identify and describe all aspects of the following kinds of sketches:
   A. Using sketches
   B. Making sketches
   C. Kinds of sketches
   D. Orthographic sketches
   E. Isometric sketches
   F. Perspective sketches

XI. Use ladder logic principles on the following:
   A. Applications
   B. What is a ladder logic?
   C. PC ladder logic

XII. Identify the functions and operational characteristics for the
following components and symbols:
   A. Input devices
   B. Logic devices
   C. Output devices

XIII. Using diagrams:
   A. Identify the numbers on the diagrams
   B. Look up diagram references

XIV. Explain the basic principles of logic using the following:
   A. Contact configurations
   B. Control logic

XV. Identify and describe all aspects of creating a diagram with the
following criteria:
   A. Analyzing the process
   B. Control objectives
   C. Output requirements
   D. Input requirements
   E. Logic requirements
   F. Creating diagram

Worksheets  15%
Quizzes     65%
Final Exam  20%
TOTAL      100%

HVAC 146

• Title: Plumbing Systems Applications*
• Number: HVAC 146
• Effective Term: Spring/Summer 2014
• Credit Hours: 3
• Contact Hours: 5
• Lecture Hours: 2
• Lab Hours: 3

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

Upon successful completion of this course, the student should be able to demonstrate familiarity with many aspects of fuel gas piping, gas appliance venting, water heater installations, combustion air requirements and proper piping techniques. Classroom lectures center on methods for proper sizing of both fuel gas piping and vent sizing with emphasis on interpretation of both the Uniform Plumbing Code and the National Fuel Gas Code. There will be an emphasis on combustion air requirements. Laboratory competencies will include identification of materials and proper installation methods of fuel gas lines, vent piping systems and copper water line connections. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 2 hrs. lecture, 3 hrs. lab/wk.

I. Using fuel gas piping
   A. List the applications, precautions, and sizing for the following
materials.
      1. Black iron
      2. Alloys
      3. Steel
      4. Brass
      5. Plastic
   B. Exercise: Make the following kinds of connections and joints, using
the above materials.
      1. Threaded (screwed)
      2. Flanged
      3. Welded
      4. Solvent weld
      5. Mechanical
   C. Using gas fitting
      1. Discuss allowable materials.
      2. Calculate sizing for all types and materials of fittings.
      3. Discuss code installation practices.
      4. Exercise: Install with code approved support of piping.
      5. Explain prohibited connections and installations.
      6. Exercise: Install appliance connectors.

II. Sizing venting systems.
   A. Discuss all aspects of the following terminology.
      1. Laterals
      2. Risers
      3. Vent height
      4. Natural draft
      5. Fan assisted
   B. List the applications, precautions, and sizing for the following
materials.
      1. Single wall galvanized metal
      2. Double wall galvanized metal
      3. Masonry chimney
   C. Discuss the sized methods required by the following codes and
regulatory bodies.
      1. Uniform Plumbing Code
      2. National Fuel Gas Code
      3. G.A.M.A. (Gas Appliance Manufacturer’s Association)
   D. Install various venting systems to code with special consideration
given to the following factors.
      1. Code requirements single wall vs double wall
      2. Support of vent piping

III. Water Heaters.
   A. List the applications and precautions for the following types of hot
water heaters.
      1. Natural draft
      2. Direct vent
      3. Instantaneous
      4. Storage
   B. Calculate the sizing requirements for the following.
      1. Residential
      2. Commercial
   C. Exercise: Make the following types of piping connections.
      1. Compression type joints
      2. Solder type joints
      3. Di-electric unions
      4. Air hammer chambers

IV. Combustion Air
   A. Define the following terms.
      1. Unconfined space
      2. Confined space
      3. Combustion air ducts
   B. Discuss the advantages and disadvantages for the following source of
combustion air.
      1. Air from outdoors
      2. Air from indoors
      3. Air from attics
   C. Size and install combustion air ducts in the following
configurations.
      1. Horizontal ducts to outside
      2. Horizontal ducts to unconfined spaces
      3. Vertical ducts to an attic
      4. Vertical ducts to outside
   D. Explain prohibited sources of combustion air.
   E. Discuss hazards resulting from improper combustion air.
      1. Sooting
      2. Poisoning by carbon monoxide

V. Discuss the condensate drain requirements from the following sources.
   A. Uniform mechanical code
   B. MFG instructions

1. Textbook assignments will be made one class prior to their due
dates: assignments of unreasonable length will not be made. Read
assignments in the text before coming to class.  Take notes during the
lecture of important points. Student participation in class is
encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on
the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of project      40%

Lab work will be graded according to progress and skill. Quizzes will be
given periodically.
Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%
Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 148

• Title: HVAC Installation and Start-up Procedures*
• Number: HVAC 148
• Effective Term: Spring/Summer 2014
• Credit Hours: 3
• Contact Hours: 5
• Lecture Hours: 2
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify techniques and procedures to install new systems, retrofit systems and do an initial start-up, check-out furnaces and air conditioners. Topics will include electrical requirements, flue appliance location, permit and inspections, combustion air, sheet metal ducts, and mechanical standards. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 2 hrs. lecture, 3 hrs. lab/wk.

I. Gas Piping/Gas System
   A. Identify the various materials such as pipe, valves, fittings,
lubricants, hangers, appliance connectors, applicable to residential gas
piping.
   B. Identify the various tools such as cutters, reamers, oilers, dies,
vises, wrenches, threading machines and manometers.
   C. Size gas piping for the correct load utilizing charts and tables.
   D. Comply with certified methods in the usage of corrugated stainless
steel (CSST) gas pipe systems.
   E. Accurately measure and calculate a piping system with pipe lengths
accurate for various different types of fitting makeups.
   F. Cut and thread 1 _”, 1 _”, and 2” gas pipe using a drop head
die.
   G. Cut and thread _” -2” pipe using a power vise and threader.
   H. Demonstrate proper hangers and spacing requirements for horizontal
and vertical gas piping systems.
   I. Check gas pressure with a manometer or dial type pressure gauge and
properly adjust the regulator.
   J. Accurately clock a gas meter to determine a gas appliance firing
rate.
   K. Leak check a gas piping system by the following methods:
      1. Soap bubbles
      2. Air pressure and mercury gauge
      3. Shut-in test
   L. Identify old style gas company pressure regulator and vents.

II. Electrical Wiring
   A. Install accurately both four-wire and five-wire systems.
   B. Install a new double pole breaker and a circuit from the breaker to
a condensing unit.
   C. Install a “side car” box adjacent to a main panel.
   D. Install a junction box and wire from this point to an outside
electrical disconnect.
   E. Install sealtight from an outside electrical disconnect to a
condensing unit and wire from the disconnect lugs to the contractor.
   F. Install a 120 volt circuit to a furnace complete with proper
ground.
   G. Install a 240 volt circuit to an air handler complete with double
pole switch.
   H. Demonstrate proficiency at using a conduit bender and installing
conduit.

III. Condensate Piping
   A. Identify the various materials used such as clear plastic tubing,
barbed fittings, hose clamps, PVC piping, PVC fittings, pipe cleaner, pipe
glue, cooper pipe and copper fittings.
   B. Explain basic plumbing principles and safe termination of a
condensate pipe in a plumbing system.
   C. Install clear plastic tubing and fittings in a workmanlike manner
with no leaks.
   D. Install rigid PVC piping and fittings (unions, traps, etc.) in a
workmanlike manner with no leaks.
   E. Explain the principles of blow thru and draw thru evaporator coils
and when it is necessary to trap and vent condensate piping.
   F. Install and wire in a float switch.
   G. Install and wire in a condensate pump.
   H. Install CPVC rigid piping for a condensing style furnace drain.

IV. Refrigerant Piping
   A. Size refrigerant piping for the capacity and distance requirements
of most commonly encountered systems.
   B. Demonstrate the proper refrigerant piping techniques for multiple
evaporators, evaporators above compressors, evaporators below compressors,
condensers above compressors, condensers below compressors.
   C. Determine the correct size metering device and install it without
leaks.
   D. Charge a refrigerant system using both superheat and sub-cooling
methods accurately.

V. Ductwork
   A. Select proper sheet metal gauge sizes to use for various sizes of
ductwork.
   B. Field measure and properly complete the sheet metal fabrication
order form for plenum take-off fittings, canvas, plenums, drops, return
air boots, stacks, offsets and jump pans.
   C. Cut into finished floors and install branch floor supplies and floor
return air grilles.
   D. Install return air panning and headers.
   E. Install a kickplate supple air register and associated ductwork.
   F. Install a high sidewall supply air stack.
   G. Seal duct system airtight.
   H. Insulate externally ductwork for unconditioned spaces.
   I. Cut a duct to proper length, form edges for drives and assemble duct
on the job site.
   J. Use correct fastners to connect ductwork to mechanical equipment.
   K. Cut into closets and walls for adding round and square ducts.
   L. Cut into ceilings made of plaster, sheet rock, etc.

VI. Vent Piping
   A. Identify the various materials used in vent piping systems such as
inducers, B vent, flashings, caps, collars, sheet metal pipe and fittings,
chimney liners (corrugated), clay tile, PVC pipe, PVC fittings and draft
hood.
   B. Proficiently read current AGA venting tables and size vent
connectors and vents (including multiple applications).
   C. Proficiently read condensing style furnace vent tables and size PCVC
pipe.
   D. List the proper clearances and support hanger requirements for vent
piping systems.
   E. Install single wall vent connectors from multiple appliances to a
chimney.
   F. Install and be proficient at installing a type B doublewall vent
pipe from gas appliance to exterior cap.
   G. Install and be proficient at installing PVC exhaust and intake
piping for a condensing furnace with proper pitch.
   H. Demonstrate proper sizing for water heater vent connectors with 80%
furnace.
   I. Demonstrate how to install a vent connector into a tile lined
chimney.
   J. Install a draft booster fan and test the safeties.

VII. Carbon Monoxide
   A. Explain how carbon monoxide is generated and dispersed.
   B. Diagnose carbon monoxide presence and do precautionary test.
   C. Identify health effects of carbon monoxide and provide a positive
reading for medical referral.
   D. State the applicable codes for building tightness and backdrafting
paper.

VIII. Explain and demonstrate the following safety procedures:
   A. Transporting of torch set with gauges protected, bottles shut off,
regulators backed out, and entire set properly supported.
   B. Fire protection around joints near combustible materials.
   C. Fire extinguisher at hand when using a torch.
   D. Tie off an extension ladder each time it is used.
   E. Wearing eye and ear protection.
   F. Wearing back strain brace when moving heavy objects.

IX. Job Commissioning
   A. Complete all quality report items on the job.
   B. Explain and demonstrate the project commissioning portion of the
quality report in front of the customer.

1. Textbook assignments will be made one class prior to their due
dates: assignments of unreasonable length will not be made. Read
assignments in the text before coming to class.  Take notes during the
lecture of important points.  Student participation in class is
encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of project      40%

Lab work will be graded according to progress and skill. Quizzes will be
given periodically.

Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.  
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 150

• Title: Refrigerant Management and Certification*
• Number: HVAC 150
• Effective Term: Spring/Summer 2014
• Credit Hours: 1
• Contact Hours: 1
• Lecture Hours: 1

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

Upon successful completion of this course, the student should have knowledge and confidence necessary to pass the EPA Refrigerant Certification exam and properly, efficiently and responsibly handle refrigerants as set forth in the Clean Air Act of 1990. 1 hr. lecture/wk.

I. Refrigeration
   A. Describe the basic refrigeration cycle.
   B. Explain the relationship between pressure and the boiling point of
water or other liquids.
   C. Describe the function of the evaporation or cooling coil.
   D. Explain the purpose of the compressor.
   E. Explain the purpose of the condensing coil.
   F. State the purpose of the metering device.
   G. Summarize the procedures used for leak testing.

II. Refrigerants
   A. List refrigerants commonly used in residential and commercial
refrigeration and air conditioning systems.
   B. List four characteristics to consider when choosing a refrigerant
for a system.
   C. List the designated colors for refrigerant cylinders for various
types of refrigerants.
   D. Describe how refrigerants can be stored or processed while
refrigeration systems are being serviced.
   E. List refrigerant phaseout dates for CFC (Chlorofluorocarbons)
refrigerants.
   F. List the leading candidates for the replacement of CFCs
(Chlorofluorocarbons).
   G. List the problems of compressor lubrication with alternative
refrigerants.

III. Refrigerant Management
   A. Name which chemicals are covered for Clean Air Act Amendments of
1990.
      1. Describe ozone.
      2. Discuss how CFCs deplete the earth’s ozone layer.
      3. Differentiate between CFCs, HCFCs and HFCs.
      4. Discuss EPA regulations as they relate to refrigerants.
      5. Explain the effect that the ozone depletion has on the world.
   B. Recycling
      1. Define the terms, recover, recycle and reclaim.
      2. Describe methods of recovering refrigerants.
      3. Identify a DOT-approved recovery cylinder.
      4. Explain the differences in refrigerant recovery/recycle units.
      5. Explain the options concerning recovered refrigerant and oil.
   C. List the current refrigerant regulations.

ASSIGNMENTS:
Textbook assignments will be made one class prior to their due date;
unreasonably lengthy assignments will not be made. Read assignments in the
text before coming to class. Take notes during the lecture of important
points. Student participation in class is encouraged.

A minimum of six exams         40%
In class exercises and quizzes 50%
Final Exam                     10%
Total                         100%

HVAC 155

• Title: Workplace Skills*
• Number: HVAC 155
• Effective Term: Spring/Summer 2014
• Credit Hours: 1
• Contact Hours: 1
• Lecture Hours: 1

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

Upon successful completion of this course, the student should be able to identify the job skills necessary to have a successful career in the field of their choice. Topics included listening skills, oral communication, human relations, decision making/problem solving, how to work as a team, time and resource management, work ethics, career planning and resume building. 1 hr. lecture/wk.

I. Listening Skills
   A. Follow oral instructions.
      1. Acknowledge and identify key words.
      2. Ascertain the words.
   B. Distinguish fact, opinion and inference in oral communication.
   C. Identify and interpret nonverbal cues (eye contact, posture,
gestures).
   D. Analyze a speaker’s point of view.
   E. Draw conclusions or make generalizations from another’s oral
communication.
   F. Restate or paraphrase a conversation to confirm what was said.
   G. Identify barriers (or interference) that may impede effective
listening.

II. Oral Communication
   A. Organize notes and ideas for formal, semiformal and informal
presentations.
   B. Prepare and deliver a presentation appropriate to subject matter,
purpose and audience.
   C. Identify interviewing techniques to gather information.
   D. Assume responsibility as a leader in group communication
activities.
   E. Incorporate visual media into a presentation.
   F. Demonstrate concise, impromptu speaking skills.
   G. Give oral directions.
   H. Demonstrate job interview skills.

III. Human Relations Skills
   A. Perform a self-assessment.
      1. Form personal goals.
      2. Justify your standards and values.
      3. Differentiate between your needs and wants.
      4. Disclose your strengths/weaknesses.
      5. Discuss your interests/talents.
   B. Define the term “self-concept”.
   C. Identify characteristics of a positive self-concept - demonstrate in
a mock interview.
   D. Use your interpersonal skills to demonstrate the following.
      1. Tact and diplomacy.
      2. Respect for others.
      3. Respect for diversity.
      4. Recognition of others’ strengths.
      5. Positive assertiveness
      6. Positive attitude.

IV. Decision Making/Problem Solving
   A. Describe and identify how the following factors that impact on your
decision making.
      1. Identify needs and wants.
      2. Identify values.
      3. Identify goals.
      4. Identify standards.
   B. Contrast and compare between the three types of decisions.
      1. Economic
      2. Technical
      3. Social
   C. Identify the steps in the decision making process.
   D. Utilize problem solving skills.
      1. Identify the problem for resolution.
      2. Define critical issues.
      3. Analyze causes of a problem.
      4. Utilize research and assessment skills.
      5. Examine results of a problem.
      6. List solutions to a problem.
      7. Select a solution to a problem.
      8. Implement an action plan.

V. Teamwork
   A. Participate in team tasks
      1. Establish team goals.
      2. Establish team standards.
      3. Demonstrate ability to receive and give information in a team
activity.
      4. Process information.
      5. Design a plan for action.
      6. Display time management in a team project.
   B. Build group consensus.
      1. Devise clarifying statements.
      2. Describe the process to reconcile disputes and disagreements.
      3. List alternative plans for action.
      4. Respond positively to different ideas and suggestions.
      5. Discuss how to express agreement or neutrality.
      6. Demonstrate conflict resolution skills.
      7. Identify steps in how to diplomatically disagree.

VI. Resource Management
   A. Identify and explain the use of common supplies for a given
occupational area.
   B. Locate information and select the materials, tools, equipment or
other resources to perform the activities needed to accomplish a specific
task.
   C. Determine cost, time and resources needed to complete a task within
an industry or occupation.
   D. Explain the relationship between setting goals and managing money.
   E. Identify fixed and flexible expenses.
   F. Identify planned and impulse buying.
   G. Explain the purpose and use of the following.
      1. Promissory note and bank invoice.
      2. Purchase requisition and invoice.
      3. Inventory card.
      4. Petty cash voucher.
      5. Receipt and payroll register.
      6. Employee’s withholding exemption form.
      7. Payroll check.
      8. Garnishment.

VII. Time Management.
   A. Identify influences on use of time.
   B. Prioritize the order in which several tasks will be accomplished.
   C. Identify and eliminate “time traps”.
   D. Identify and control personal “time wasters”.
   E. Develop strategies to overcome procrastination and meet deadlines.
   F. Estimate the time required to perform activities needed to
accomplish a specific task.
   G. Create a time plan for solving a problem.
   H. Develop a daily time plan for work, family and other
responsibilities.
   I. Utilize time management strategies to reduce work and family
conflicts.
   J. Demonstrate stress management skills.

VIII. Work Ethics
   A. Interpret and explain standard workplace policies related to:
      1. Safety
      2. Personal hygiene
      3. Personal discipline (personal leave and absences)
      4. Substance abuse
      5. Employee theft
      6. Sexual harassment
   B. Explain the importance of employee rules, regulations and policies
in the following areas.
      1. Punctuality and dependability.
      2. Responsibility for position.
      3. Accuracy of work.
      4. Cost effectiveness of various repair strategies.
   C. Perform effective work ethic attitudes and behaviors in the
following areas.
      1. Acceptance of the job requirements.
      2. A willingness to take initiative with new challenges.
      3. Take responsibility for decisions and actions.
   D. Compare and fill out various job application forms.
   E. Explain the legal and professional ramifications a job application
form has for the applicant and employer.
   F. Identify and demonstrate personal characteristics that lead to job
satisfaction.
   G. Explain the necessity of openness to lifelong learning.
   H. Create a portfolio or other means that display academic and
technical skills.

IX. Career Planning
   A. Access and use information to develop educational and career
options.
   B. Prepare a personal budget.
   C. Develop a financial expectation.
   D. Participate in career exploration activities.
      1. Take career aptitude test.
      2. Attend a job fair.
   E. Apply self-assessment skills to the career decision-making process.
   F. Explain potential impact of career choice on family and personal
life.
   G. Identify job interview skills.

1. Textbook assignments will be made one class prior to their due
dates: assignments of unreasonable length will not be made. Read
assignments in the text before coming to class. Take notes during the
lecture of important points. Student participation in class is
encouraged.

Chapter and/or unit tests 80%
Final Exam                20%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 167

• Title: Sheet Metal Layout and Fabrication*
• Number: HVAC 167
• Effective Term: Spring/Summer 2014
• Credit Hours: 3
• Contact Hours: 5
• Lecture Hours: 2
• Lab Hours: 3

Requirements:

Prerequisites or corequisites: RDG 126 or College Reading Readiness

Description:

Upon successful completion of this course, the student should be able to identify the components, equipment and operation for sheet metal layout and fabrication. Practice problems are included at the end of each unit in order to provide the student with an opportunity to apply the methods attained by sheet metal layout. Shop facilities are available. The patterns will be fabricated and joined into a line of fittings. This gives the most complete test of pattern accuracy and also provides the experience needed by a competent layout person. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 2 hrs. lecture, 3 hrs. lab/wk.

I. Sheet Metal Orientation
   A. Describe terms and definitions.
   B. Match metals to their significance.
   C. Discuss job opportunities for sheet metal workers.

II. Safety
   A. Discuss terms and definitions.
   B. Explain accident causes.
   C. Describe safe working attire.
   D. Describe safe lifting.
   E. Demonstrate safe use of tools and equipment.
   F. Describe fire safety rules.

III. Basic Math and Measuring
   A. Discuss terms and definitions.
   B. Calculate fraction problems.
   C. Calculate decimal problems.
   D. Calculate percent problems.
   E. Demonstrate architects scale-use in sheet metal.
   F. Calculate area and perimeter.
   G. Calculate circumference and area of a circle.

IV. Hand and Machine Tools
   A. Discuss terms and definitions.
   B. Describe measuring tools.
   C. Lay out and cut with straight snips.
   D. Lay out with dividers and cut with left cutting snips.
   E. Lay out with dividers and cut with right cutting snips.
   F. Fold, bend, hem, set down and make drive clips with a bar folder.
   G. Lay out then cut on a square shear metal sheets to make a cylinder.
   H. Roll flat metal sheets into cylinder with a slip roll.
   I. Fasten seams with a resistance spot welder.
   J. Crimp, bead, edge, and dovetail cylinders on a combination rotary
machine.
   K. Form hems and seams on a hand brake.
   L. Join a cylinder to a flat surface with a dovetail notch.
   M. Lay out, cut and form on a Pittsburg machine and a hand brake, a one
piece rectangular duct.
   N. Turn drives on rectangular duct using a cleat bender.
   O. Determine the diameter and length of tinner rivets for selected
sheet metal thickness.
   P. Lay out, cut and fasten together a simple box with sheet metal
rivets
   Q. Lay out, cut and fasten together a simple box with pop rivets.
   R. Lay out, cut and fasten together two cylinders with mechanical and
non-mechanical fasteners.
   S. Lay out, cut and form a damper for installation in a rectangular
duct.
   T. Install a damper and quadrant in a rectangular duct.
   U. Lay out, cut and install a damper in a round duct..

V. Projects - Layout, cut and fabricate to specifications:
   A. Metal box.
   B. Rectangular duct.
   C. 90/ Square heel and throat elbow.
   D. 90/ Square and round heel elbow.
   E. 90/ elbow with round throat and curved heel.
   F. Two-Way AY@ Branch
   G. Offset with a square throat and heel.
   H. Offset with a curved throat and heel.
   I. O.G. Transition offset.
   J. Transition.
   K. Square to round.
   L. Drop-cheek elbow with round heel and throat.
   M. Transition AY@ branch.

VI. Layout
   A. Cylinder cut on a miter.
   B. Cylinder cut oblique to axis.

2 Chapter and/or Unit Tests 10%
Lab Assignments             80%
Final Exam                  10%
Total                      100%

HVAC 221

• Title: Commercial Systems: Air Conditioning*
• Number: HVAC 221
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify cooling systems used in commercial, institutional and industrial applications. Types of equipment include reciprocating and centrifugal chillers, absorption systems, cooling towers, fans and air handlers. Topics also include psychometrics, pressure-enthalpy diagrams and commercial load calculations, evacuation and charging. 3 hrs. lecture, 3 hrs. lab/wk.

I. Course Introduction
   A. Review the course outline and methods of instruction.
   B. Discuss the course objectives and methods of instruction.
   C. Discuss spelling and grammar requirements.

II. Human Comfort
   A. Explain metabolism balance.
   B. Describe body heat loss.
   C. List the factors of body comfort.
   D. Explain the make up of acceptable air quality.
   E. Discuss air distribution and ventilation.

III. Physical Principles
   A. Define the following terms:
      1. Specific heat
      2. Sensible heat
      3. Latent heat
      4. Enthalpy
   B. Describe the differences between work, power, and energy .
   C. Explain the relationship between pressure and temperature.
   D. Discuss the gas laws as they relate to HVAC.

IV. Heat Gains
   A. Define the following terms as they relate to heat gain:
      1. Heat transfer
      2. Heat gain by conduction
      3. Heat gain by convection
      4. Heat gain by radiation
      5. Infiltration gains
      6. Ventilation gains
   B. Explain the difference between conduction, convection, and
radiation.
   C. Discuss the effects of occupancy loads.
   D. Explain what is meant by the term “design conditions.”
   E. Understand the energy equation of heat transfer.

V. Heat Loss/Gain of a Building
   A. Create a basic heat loss/gain calculation form.
   B. Perform heat gain calculations from prescribed plans using a
calculation form.
   C. Use the Right-N computer program, to perform heat gain
calculations.
   D. Compare results from computer calculations to results from hand
calculations.
   E. Discuss efficiency ratings of different cooling systems.
   F. Calculate costs of operation of systems with various efficiency
ratings.

VI. Thermodynamics and the Refrigeration Cycle
   A. Define the following terms used in the refrigeration cycle:
      1. Refrigerating effect
      2. Mass flow rate
      3. Heat of rejection
      4. Heat of absorption
      5. Heat of compression
      6. Superheat
      7. Subcooling
   B. Describe the ideal refrigeration cycle in detail.
   C. Compare the condition of refrigerant in all locations of the
refrigeration cycle.
   D. Discuss how and where the main transfer of heat occurs in the
refrigeration cycle.
   E. Calculate superheat conditions of various refrigerants using
pressure temperature charts.
   F. Discuss the coefficient of performance of various compression
units.
   G. Discuss the following methods of system charging:
      1. Weighing in the charge
      2. Charging by superheat
      3. Charging by subcooling
      4. Charging by “charging charts”
      5. Charging by “slide rulers”

VII. Improving System Performance
   A. Describe the effects of the following on system performance:
      1. Refrigerant charge
      2. Refrigerant piping variations
      3. Airflow
      4. Change of evaporator temperature
      5. Change of condensing temperature
   B. Describe which changes in performance will lead to premature
compressor failure.

VIII. Psychometrics
   A. Discuss the history of psychometrics.
   B. Analyze air and water vapor mixtures.
   C. Discuss dry bulb, wet bulb, and relative humidity.
   D. Calculate the “sensible heat ratio.”

IX. Positive Displacement Compressors
   A. Explain the following different types of compressors utilized in the
industry:
      1. Reciprocating
      2. Rotary
      3. Screw
      4. Scroll
   B. Discuss compressor failure caused by the following:
      1. Lack of lubrication
      2. Overcharging of systems
      3. Improper air flow
      4. Undercharging of systems
      5. Improper refrigerant piping

X. Condensers and Cooling Towers
   A. Define the following types of condensers:
      1. Air cooled
      2. Water cooled
   B. List the proper maintenance procedures for cooling tower
applications.
   C. Analyze the differences between air cooled and water cooled
systems.
   D. Compare the operating costs between air cooled and water cooled
systems.
   E. Discuss cooling towers and the methods for sizing.

XI. Absorption systems
   A. Explain absorption theory and cycle operation.
   B. Describe the components of an absorption system.
   C. Discuss the procedure for start up and operation.
   D. Explain purging in absorption systems.

1. Reading assignments will be made one class prior to their due
dates: There will be no assignments of unreasonable length.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of a project    40%
      TOTAL                               100%

Lab work will be graded according to progress and skill. Quizzes will be
give periodically.

Summary of Course Evaluation:
Periodical quizzes/reports 10%
Unit Exams                 40%
Lab Assignments            30%
Final Examination          20%
TOTAL                     100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests:
There will be NO make up of exams unless PRIOR arrangements have been made
with the instructor.

Attendance Policy:
Attendance is important in this course. Material is presented and
explained which is not in the textbook or in the handouts. Also, it is not
feasible to repeat equipment demonstrations for absent students. If you
must be absent, you are expected to obtain missed assignments,
announcements and demonstration notes from your fellow students.

HVAC 223

• Title: Commercial Systems: Heating*
• Number: HVAC 223
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify large heating systems used in commercial, institutional and industrial applications. Types of equipment include hot water, low-pressure and high-pressure steam boilers; auxiliary, safety and flame safeguard controls; steam traps; condensate return; and water treatment systems. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools. 3 hrs. lecture, 3 hrs. lab/wk.

I. Thermodynamics of steam and water
   A. Define the following terms as they relate to heating systems:
      1. Enthalpy
      2. Boiling point
      3. Volume
      4. Temperature/Pressure
   B. Describe the relationship between temperature, pressure and volume
in a system as it is heated.
   C. Calculate the quantities of heat required to raise the temperature
of various substances a prescribed number of degrees.
   D. Interpret the steam tables with references to sensible, latent and
total heat contents.

II. Types of boiler systems
   A. Discuss the history of boilers, beginning in the 17th century.
   B. Explain the differences between a steam and water boiler.
   C. Identify the various components of a water boiler system.
   D. Identify the various components of a steam boiler system.
   E. Compare steam boilers by their applications:
      1. Utility/marine
      2. Process
      3. Comfort (space heating)
      4. Steam to water converters
   F. Recognize the different types of steam boilers:
      1. Water tube
      2. Fire tube
      3. Horizontal Return tube
      4. Vertical
      5. Scotch marine
      6. Locomotive
   G. Explain the ASME (American Society of Mechanical Engineers) code
designations.
   H. Describe the differences between cast iron sectional and package
boilers.

III. Boiler Explosions
   A. Discuss the history of boiler explosions.
   B. Analyze how boiler explosions occur:
      1. Component failures
      2. Operator errors
   C. Describe the rate of expansion of water to steam when an explosion
occurs.
      1. B.L.E.V.E. (Boiling Liquid Expanding Vapor Explosion)
      2. Explosive forces of combustible mixtures
   D. List the various code approval bodies:
      1. ASME
      2. NFPA
      3. FM
      4. UL
      5. AGA
      6. ABMA.3

IV. Boiler accessories
   A. Recognize and describe the use of the various valves and fittings:
      1. Butterfly valve
      2. Globe and gate valve
      3. Rising stem valve
      4. Outside stem and yoke valve
      5. Quick and slow acting valves
      6. Check valves
      7. Backflow preventers
      8. Pressure reducing valves
      9. Automatic valves
     10. Non-return valves
   B. Discuss in detail, the pressure relief valve for both a steam and
water boiler application.
   C. Describe the construction and operation of a pressure relief valve.
   D. Explain the code requirements for the installation and adjustment of
relief valves.

V. Steam boiler piping
   A. List all aspects of installation of the following steam piping
connections:
      1. Main steam riser
      2. Main supply header
      3. Branch headers, risers and branch lines
      4. Condensate return lines
      5. Hartford return loops
      6. Flange type connections
      7. Expansion tanks and air controls
      8. Feed and make-up water components

VI. Appurtenances
   A. Define the following terms as they relate to steam and water
boilers:
      1. Gauge glasses
      2. Water columns and try cocks
      3. Steam gauges
      4. Temperature gauges
      5. Air bleed valves
      6. Soot blowers
      7. Injectors
      8. Fusible plugs
      9. Superheaters

VII. Steam Traps
   A. Describe the purpose of a steam trap.
   B. List the various types of traps and be able to visually identify
each type.
      1. Float and thermostatic
      2. Thermostatic
      3. Bucket
      4. Inverted bucket
      5. Disc
      6. Other
   C. Describe the various applications for each type of steam trap.
   D. Demonstrate the proper method for testing the operation of a steam
trap.
   E. Discuss the various methods for troubleshooting steam traps.
   F. Explain the methods for sizing steam traps.
      1. Capacity
      2. Air handling capability
      3. Volume of condensate

VIII. Controls and safety devices
   A. List the types of low water cut-off controls:
      1. Mechanical float type
      2. Electronic probe type
   B. Describe the proper operation of a low water cut-off control and
explain the maintenance of this control.
   C. Discuss the requirements of a secondary low water cut-off and when
it is required.
   D. Explain the use of both manual and automatic make up water feeders.
   E. Explain the use of Pressurtrols and thermostats
      1. As controllers
      2. As limit switches
      3. As modulating controls
   F. Discuss the components of a feedwater and water make up system.
      1. Condensate tanks
      2. Feedwater heaters
      3. Deaerators
      4. Superheaters
      5. Feedwater regulators
      6. Condensate pumps

IX. Fuels and ignition
   A. Explain the principles of combustion chemistry and ignition of
fuels.
   B. List the types of fuels available for combustion.
      1. Natural gas
      2. Propane
      3. Oil
      4. Coal
      5. Sulphur
   C. Describe the process of combustion of natural gas to include:
      1. Complete combustion
      2. Incomplete combustion
      3. Combustion air requirements
      4. Uniform Mechanical Code requirements of combustion air
   D. List the products of combustion, including those of complete and
incomplete combustion.
      1. Carbon dioxide
      2. Carbon monoxide
      3. Water and water vapor
   E. Recognize the different types of burners and gas valve assemblies to
include:
      1. Atmospheric type
      2. Power burners
      3. Pressure regulating valves
      4. Main gas valves
      5. Double block and bleed valve arrangements
      6. High and low gas pressure controls

X. Fuel gas piping
   A. Describe the proper procedure for the correct sizing of gas piping
to a heating appliance.
   B. Using information from the Uniform Mechanical Code and the National
Fuel Gas Code, size the gas piping from a prescribed building plan.
   C. Recognize the exceptions to standard sizing as specified in the code
manual.
   D. Discuss the problems created with improper fuel gas piping sizing.

XI. Gas appliance vent sizing
   A. Describe the accepted methods for sizing vents for gas burning
appliances.
   B. Using the GAMA (Gas Appliance Manufacturer's Association) tables,
size the vents from a prescribed building plan.
   C. Discuss the problems created with improper vent sizing.

XII. Plant operations
   A. Demonstrate the ability to go through required boiler start up and
shut down procedures.
      1. Pre-checks
      2. Warming up a cold boiler system
      3. Single boiler start ups
      4. Multiple boiler start ups
   B. List the standard operating procedures for a boiler system that is
online.
      1. Water level checks
      2. Blowdown frequencies
      3. Flamescanner checks
      4. Boiler logs and trend analysis
      5. Taking a boiler off line
   C. Exp lain boiler efficiency and the items that affect efficiency.
      1. Typical losses
      2. Input vs. output
      3. Calculating combustion efficiency
   D. Discuss water treatment of a boiler system including problems
created from inadequate treatment.
      1. Corrosion
      2. Scaling
      3. Caustic embrittlement
      4. Foaming and priming
      5. Pitting of surfaces
      6. pH and alkalinity
      7. Total dissolved solids
      8. Various water softeners and treatments
      9. Oxygen scavengers

1. Textbook assignments will be made one class prior to their due
dates: There will be no assignments of unreasonable length.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of a project    40%
     TOTAL                                100%

Lab work will be graded according to progress and skill. Quizzes will be
give periodically.

Summary of Course Evaluation:
Periodical quizzes/reports 10%
Unit Exams                 40%
Lab Assignments            30%
Final Examination          20%
TOTAL                     100%

Quizzes: There will be no makeup of quizzes.

Chapter or Unit Tests:
There will be NO make up of exams unless PRIOR arrangements have been made
with the instructor. 

Attendance Policy:
Attendance is important in this course. Material is presented and
explained which is not in the textbook or in the handouts. Also, it is not
feasible to repeat equipment demonstrations for absent students. If you
must be absent, you are expected to obtain missed assignments,
announcements and demonstration notes from your fellow students.

HVAC 229

• Title: Advanced Control Systems*
• Number: HVAC 229
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify the components and theory in electronic, pneumatic and direct digital control systems as they apply to HVAC systems. This course will reinforce and build on those competencies learned in HVAC 123 and HVAC 121. Classroom lectures will center on components, wiring diagrams, calibration and sequences of operation, system components, theory of operation, wiring diagrams and installation methods. Laboratory competencies include identification, calibration, maintenance and problem diagnosis of pneumatic, electronic and DDC systems, thermostat controllers and their related sensors/transmitters. Students will program a complete building energy management system. Interactive instructional media will be used in this course. 3 hrs. lecture, 3 hrs. lab/wk.

I. Controls - Air Moving Equipment
   A. Describe which control system type is normally used in two (2)
position control.
   B. Explain which control method is best used for VAV and multizone
applications.
   C. Discuss the benefits of the preferred method of control for VAV,
multizones.

II. System Installation
   A. Describe proper wiring techniques for electronic controls.
   B. Describe proper air line connections for pneumatic controls and
sensors.
   C. Explain proper installation of a DDC communication bus.
   D. Discuss the differences between wiring electronic controls and
standard controls.
   E. Demonstrate installation wiring of a controller, sensor and final
control element.

III. Controls - General
   A. Compare and contrast electronic, pneumatic and two position control
methods.
   B. Compare and contrast digital vs analog controls.
   C. Give examples of electronic, pneumatic and digital systems.
   D. List the advantages of pneumatic and electronic control over two (2)
position control.
   E. Discuss proportional control through digital quantification and its
advantages over other methods.
   F. Create a flow chart which shows the sequence of operation from the
sensor to the final control device for both pneumatic, electronic and DDC
control operation.

IV. Control Principles
   A. Define electronic and pneumatic control sensors.
   B. Define thermostat controllers and multipurpose controllers.
   C. Discuss throttling range and proportional band in an electronic
controller.
   D. Describe various final control elements.
   E. Explain the difference between proportional control and two position
control.

V. Controllers - General
   A. Compare and contrast proportional vs two position control.
   B. Demonstrate the proper method for installing and wiring a thermostat
controller.
   C. Explain the functions of controller components.
   D. Demonstrate the proper procedure for setting throttling range on a
controller.

VI. Receiver Controllers
   A. Discuss the similarities and differences of electronic, pneumatic
and digital controllers.
   B. Explain direct and reverse action of a receiver controller.
   C. Explain the procedure for proper calibration of an electronic and
pneumatic controller.
   D. Describe throttling range and proportional band.

VII. Air Supply and its components
   A. Describe the proper maintenance and service of the pneumatic air
supply system.
   B. Identify pressure relief devices and their respective pressure
settings.
   C. Discuss devices used in moisture and oil removal.

VIII. Communications
   A. Explain the process of remote access for building control.
   B. Describe the different types of modems available for control
communication.
   C. Explain the different baud rates available for DDC communication.
   D. Describe the differences between serial and parallel communication
connections.
   E. Explain star and series network connections.

IX. Sensors/Transmitters
   A. Explain the differences between bimetal and resistive sensors and
transmitters.
   B. Discuss the accuracy of traditional sensors compared to electronic
and pneumatic sensors.
   C. Describe the operation of pressure and humidity sensors and
transmitters.
   D. Explain the differences between positive and negative temperature
coefficient sensors.

X. DDC and Microprocessor Terminology
   A. Define the following DDC and microprocessor terms:
      1. Hardware
      2. Software
      3. Integrated circuits
      4. ROM (read only memory)
      5. RAM (random access memory)
      6. EEPROM (electronically erasable programmable read only memory)
      7. Serial and parallel ports
      8. Communication protocol
   B. Discuss the relationships between ROM, RAM and EEPROM memory.
   C. Explain the basic function of a DDC controller as compared to a
standard controller.

XI. Three Phase Power
   A. Explain how to recognize a three phase service.
   B. Compare a “Wye” configuration and a Delta configuration.
   C. Describe the proper method for connecting a three phase motor.
      1. Current draws of three phase vs. single phase
      2. Overload protection and voltage imbalance

Course Evaluation Summary
 Periodical quizzes        10%
 Chapter and/or Unit tests 30%
 Lab Assignments           25%
 Final Examination         25%
 Book or Article Reports   10%
 TOTAL                    100%

Grading scale:
    90 – 100% A
    80 –  89% B
    70 –  79% C
    60 –  69% D
Less than 60% F

HVAC 231

• Title: HVAC Rooftop Units*
• Number: HVAC 231
• Effective Term: Spring/Summer 2014
• Credit Hours: 3
• Contact Hours: 5
• Lecture Hours: 2
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Topics will include electrical controls and economizers of various rooftop units, roof curbs, installation, service, diagnosis, evacuation and charging of typical light commercial rooftop units. The student will be required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 2 hrs. lecture, 3 hrs. lab/wk.

I. Explain the basic principles of operation of the following types of
rooftop units.
   A. Gas heating units.
   B. Electric heating units.
   C. Electric cooling units.
   D. Combination gas/electric all season units.
   E. Single zone vs multizone.
   F. Horizontal discharge/down discharge.
   G. Draw through vs blow through type units.

II. Identify the functions and operational characteristics of the
following components of gas heating units.
   A. Combustion blower motors.
   B. Ignition controls - sequence of operation.
   C. Limit controls.
   D. Combustion air adjusters.
   E. Safeties.

III. Identify the functions and operational characteristics of the
following components of electric heating units.
   A. Electric heat elements.
   B. Sequencers.
   C. Limit controls.
   D. Safeties.

IV. Identify the functions and operational characteristics of the
following components of electric cooling units.
   A. Starting relays and capications.
   B. Outdoor fan motors.
   C. Compressors.
   D. Limit controls.
   E. Economizers.
   F. Safeties.

V. Identify the functions and operational characteristics of the following
components of economizers.
   A. Temperature sensing.
   B. Enthalpy controls.
   C. Minimum outside air requirements.
   D. Damper linkages/adjustments.
   E. Damper motors.
   F. Fresh air intakes.

VI. List the installation cautions and procedures for roofcurbs and
adapter curbs.
   A. Install insulation.
   B. Install cant strips.
   C. Install filler panels.
   D. Install nailer strips.

VII. List the installation cautions and procedures for concentric duct
package units.
   A. Calculate the sizing required.
   B. Describe the register types and air velocity design parameters.

VIII. Identify the functions and operational characteristics of a typical
DDC controlled system.
   A. Components.
   B. Wiring.
   C. Sensors.
   D. Communication links.
   E. Zone controls/dampers.
   F. Disconnect and reconnect to operating condition all the
communication and control wiring for a typical DDC controlled system.

IX. Discuss the following design considerations.
   A. Roof support.
   B. Weight distribution.

X. Startup, checkout and adjustment of rooftop units.
   A. List general safety procedures.
   B. Discuss the startup check sheet provided by the manufacturer.
   C. Exercise: Follow a startup procedure provided by the manufacturer.
   D. Calculate a performance check.
   E. Calculate the net cooling capacity.
   F. Exercise: Calculate and measure the air flow in a system.
   G. Exercise: Calculate and measure the air flow in a system using the
auxiliary heat method.
   H. Exercise: Calculate and measure the air conditioners gross
capacity.

XI. Troubleshooting the mechanical side of a rooftop system.
   A. List the general refrigeration side problems.
   B. Solve air system problems, high and low.
   C. Solve specific rooftop refrigeration system problems on an operating
rooftop system.
   D. Test a heat exchanger for leaks.
   E. Exercise: Disassemble and reassemble to operating condition two
different rooftop units.

XII. Troubleshooting the electrical side of a rooftop system.
   A. List the general electrical side problems.
   B. Find and repair faults to the following components in an operating
rooftop unit.
      1. Combustion blower motors.
      2. Ignition controls.
      3. Draft proving check sheets.
      4. Limit controls.
      5. Combustion air.
      6. Electric heat elements.
      7. Sequencers.
      8. Safetys.
      9. Economizers.
     10. T-stats.
     11. Miswiring.
     12. Compressors.
     13. Starting components.
     14. Outdoor fan motors.

1. Textbook assignments will be made one class prior to their due
dates: assignments of unreasonable length will not be made. Read
assignments in the text before coming to class.  Take notes during the
lecture of important points. Student participation in class is
encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of project      40%

Lab work will be graded according to progress and skill. Quizzes will be
given periodically.

Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 235

• Title: Residential Heat Pump Systems*
• Number: HVAC 235
• Effective Term: Spring/Summer 2014
• Credit Hours: 4
• Contact Hours: 6
• Lecture Hours: 3
• Lab Hours: 3

Requirements:

Prerequisites: HVAC 121 and either HVAC 123 or ELTE 123

Description:

Upon successful completion of this course, the student should be able to identify the function of all components and accessories of all electric and dual heat pump systems. Topics will include electric heat and heat pump fundamentals, principles and applications; refrigerant flow controls; defrost cycle controls; heat pump thermostats; indoor air distribution; dual fuel controls; and change-over stats. Emphasis will be on the electrical diagrams and mechanical principles of operation. These systems, as well as practical instruction in service and diagram procedures and techniques for the efficient operation, maintenance, troubleshooting and repair of these systems, will make up the lab portion of the course. The student will required to provide ANSI Z87 safety glasses and may be expected to provide other basic hand tools and/or equipment. 3 hrs. lecture, 3 hrs. lab/wk.

I. Explain the basic principles of operation of heat pump systems.
   A. List the general components, their functions and operational
characteristics of the following types of heat pumps.
      1. Air source
      2. Liquid source
   B. List the electrical cycle sequence of operation for the following
functions.
      1. Trace out the wires energized in the fan on cycle.
      2. Trace out the wires energized in the cool cycle.
      3. Trace out the wires energized in the heat cycle.
      4. Trace out the wires energized in the defrost cycle.
      5. Trace out the wires energized in the emergency heat cycle.
   C. Match terms related to heat pump systems with their definitions.
   D. Identify heat pump configurations.
   E. Complete statements concerning rules for good heat pump operation.

II. Using test instruments.
   A. List the general types of instruments used by HVAC Technicians.
   B. Take a temperature measurement.
   C. Take a pressure measurement on high and low sides.
   D. Take all the electrical readings on an operating system.
   E. Use an air flow meter.
   F. Use a liquid handling weight scale.
   G. Calculate the efficiency’s of a heat pump.

III. Identify the functions and operational characteristics of the
following component parts.
   A. Refrigeration cycle tubing.
   B. Heat exchangers.
   C. Pressure-reducing devices.
   D. Compressors.
   E. Reversing valves.
      1. Identify components of a 4-way reversing valve.
      2. Differentiate between the operation of a 4-way reversing valve in
the heating and cooling modes.
   F. Check valves.
   G. Accumulators.
   H. Electrical system controls.
   I. Thermostats.
   J. Defrost controls.
   K. Types of defrost systems.
   L. Outdoor ambient thermostats (OATs).
   M. Hold back thermostats.
   N. Discharge temperature thermostats.

IV. Heat pump application criteria.
   A. Calculate the over sizing of a heat pump.
   B. Discuss when split system units are used.
   C. Identify equipment selection standards.
   D. Discuss when package systems are used.
   E. Discuss when add-on systems are used.
   F. Calculate balance points, thermal and economic.
   G. Calculate second thermal balance point.

V. List the installation cautions and procedures for the following.
   A. Operating split systems.
   B. Operating add-on systems.
   C. Connect refrigerant lines by approved braizing techniques.
   D. Connect pre-charged tubing lines.
   E. Perform leak tests using vacuum, pressure, sound, bubbles,
electronics and micrometers.
   F. Operating package units.

VI. Startup, checkout, and adjustment of heat pumps systems.
   A. List general safety procedures.
   B. Use a startup check sheet provided by the manufacturer.
   C. Follow a startup procedure provided by the manufacturer.
   D. Calculate a performance check.
   E. Calculate the net cooling capacity.
   F. Calculate and measure the air flow in a system.
   G. Calculate and measure the air flow in a system using the auxiliary
heat method.
   H. Calculate and measure the heat pump gross capacity.

VII. Troubleshooting the refrigeration side of a heat pump system.
   A. List the general refrigeration side problems.
   B. Solve air system problems, high and low.
   C. Solve specific heat pump refrigeration system problems on an
operating heat pump system.
   D. Solve problems concerning the heat pump torch test.
   E. Solve problems concerning special precautions for replacing
reversing valves.
   F. Identify bad check valves on an operating heat pump system.
   G. Identify bad reversing valves on an operating heat pump system.
   H. Discuss standard refrigeration system problems and how to prevent
them.

VIII. Troubleshooting the electrical side of a heat pump system.
   A. Find and repair an area temperature control in an operating heat
pump system.
   B. Find and repair defrost systems faults in an operating heat pump
system using the following types of defrost controls.
      1. Temperature initiation/temperature termination
      2. Pressure initiation/temperature termination
      3. Time initiation/temperature termination
      4. Pressure-time initiation/temperature termination
   C. Trace operational circuits for the following:
      1. A heat pump in the cooling mode.
      2. The first stage heating in a heat pump.
      3. A heat pump in the defrost mode.
      4. The second stage supplemental heat in a heat pump.
      5. A fossil fuel heat pump system in first stage heat mode above 45
degree F outdoor ambient.
      6. A fossil fuel heat pump system in first stage heat mode above 40
degree F outdoor ambient.

IX. Discuss Geothermal heat pump systems.
   A. List the general types of heat sources.
   B. Discuss water quantity requirements of Geothermal heat pump
systems.
   C. Discuss water temperature requirements of Geothermal heat pump
systems.
   D. Discuss water quality requirements of Geothermal heat pump systems.
   E. Discuss return water requirements of Geothermal heat pump systems.
   F. Identify scaling problems and solutions of heat exchanges.
   G. Identify corrosion problems and solutions of heat exchanges.

X. Identify the advantages and disadvantages of the following types of
liquid (water) heat sources/sinks.
   A. Drilling supply wells.
   B. Return water.
   C. Two-well reversible systems.
   D. Geothermal well systems.
   E. Ground loops.
   F. Reservoir systems.

XI. Discuss the application criteria of the following devices on a water
source heat pump.
   A. Water pump types.
   B. Pump size.
   C. Head pressure limitations.
   D. Pressure tank selection.
   E. Pipe materials.
   F. Other accessories.
   G. Problems to avoid.

XII. Sizing well supply systems.
   A. List the general requirements.
   B. Complete a water system worksheet.
   C. Discuss practical applications.
   D. Calculate a Geothermal well life span.

XIII. Sizing ground loop systems.
   A. List the general requirements for feet per ton for the following
types.
      1. Earth contact-direct pipe
      2. Earth contact, single, double, triple and slinky tracks.
      3. Vertical parallel systems.

XIV. List the installation requirements for a ground source heat pump.
   A. Identify site plan requirements.
   B. Identify pipe material requirements.
   C. Identify approved methods of installing pipe.
   D. Identify approved methods of back filling trenches.
   E. Identify approved methods of grouting bore holes.
   F. Identify approved methods of inside piping designs.
   G. Identify approved methods of tracer systems.

XV. Flushing and charging the water loop.
   A. List the general requirements.
   B. Flush the loop.
   C. Charge the loop.
   D. Calculate and mix the antifreeze solutions.

XVI. List waste heat recovery objectives.
   A. List the general objectives.
   B. Identify the application on which waste heat recovery is
economical.
   C. Identify installation techniques to improve water heat recovery
efficiency.
   D. Calculate the efficiency of the operation of the heat recovery
unit.

Textbook assignments will be made one class prior to their due dates:
assignments of unreasonable length will not be made. Read assignments in
the text before coming to class.  Take notes during the lecture of
important points. Student participation in class is encouraged.
2. Lab Sessions: Simple and complex problems will be a part of the lab
experience. Tools and testing equipment will be studied and used. Lab
grades for each lab session will be based on the following criteria:
  a. Ability to work independently         15%
  b. Answers to lab study questions        15%
  c. Ability to work neatly and accurately 15%
  d. Ability to work productively          15%
  e. Successful completion of project      40%

Lab work will be graded according to progress and skill. Quizzes will be
given periodically.
Periodical quizzes        10%
Chapter and/or unit tests 40%
Lab assignments           40%
Final Exam                10%
TOTAL                    100%

Quizzes: There will be no makeup of quizzes.
Chapter or Unit Tests: There will be no makeup of these exams unless prior
arrangements have been made with the instructor.

HVAC 271

• Title: HVAC Internship*
• Number: HVAC 271
• Effective Term: Spring/Summer 2014
• Credit Hours: 3
• Contact Hours: 16
• Lecture Hours: 1
• Other Hours: 15

Requirements:

Prerequisites: Department approval required

Description:

Upon successful completion of this course, the student should be able to apply classroom knowledge to an actual work situation. The internship will provide advanced students with on-the-job experience under the supervision of professionals in the industry. The work will be developed cooperatively with area employers, college staff and each student to provide a variety of actual job experiences directly related to the student's career goals. 1 hr. lecture, minimum 15 hrs. on-the-job training/wk.

I. Introduction to Internship
   A. Interpret program requirements.
   B. Complete the required forms from the handbook.
   C. Discuss the procedures set forth by the Career Program Facilitator.

II. The Job Search Process
   A. Find three sources of job information.
   B. Identify three job postings in your career program field.

III. Obtaining Employment
   A. Write a letter of inquiry.
   B. Write a resume.
   C. Complete a job application.
   D. Describe a job interview.

IV. Employer/Employee Relationships
   A. Define labor relations.
   B. Explain human relations.
   C. Write examples of conflict and resolution.

V. Employee Growth and Development
   A. Define employment advancement.
   B. Examine personal assessment of your job performance.
   C. Depict management opportunities in your career area.

VI. Leadership in the Work Place
   A. Describe qualities of leadership.
   B. Define fellowship.

VII. Dealing with Termination
   A. Define termination with cause.
   B. Define termination without cause.
   C. Describe how to deal with employment termination.

VIII. The Structure of Business and Industry
   A. Explain organizational theory.
   B. Describe work flow patterns.

IX. Conclusion
   A. Summarize your employer evaluation.
   B. Write a self evaluation.

1. Employer work assignments: This includes working not less than 15
hours per week for the semester; report to work regularly and adhere to
the employer’s work rules and standards; notify the Career Program
Facilitator immediately on any changes in employment status. 50% 
2. Classroom assignments, turned in on time and complete. 
The assignments will be graded on content, spelling and punctuation 30%
3. Employer Evaluations (2), turned in on time and complete 5%
4. Student self-evaluation, turned in on time and complete 5%
5. Attend all assigned Internship meetings with the Facilitator 10%
   TOTAL 100%

HVAC 291