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St. Philip's College · - · HART-Heating, Air Condition

AC Control Principles

  • 8 Weeks Flex I Fall 2017
  • Section 001.19383
  • 4-3-3 Credits
  • 08/28/2017 to 10/21/2017
  • Modified 01/05/2018

Meeting Times

Mon / Wed / Fri

Class 8:00 am - 11:50 am 

Room B135

Contact Information

Raul Lopez, M. Ed.

Faculty Instructor - HVAC

Office: B-137

Email: [email protected]


Tool list will be provided (listed below)

Electricity For Refrigeration, Heating, and Air Conditioning 9th

  • Author: Russell E. Smith
  • Edition: 9th ED
  • ISBN: 978-1-2851-7998-8

Book is required for class.


A basic study of HVAC and refrigeration controls; troubleshooting of control components; emphasis on use of wiring diagrams to analyze high and low voltage circuits; a review of Ohm's law as applied to air conditioning controls and circuits.



Upon completion of this course the student will be able to:

1: Electrical Safety

  • Explain the effect of electric current on the human body.
  • Understand the injuries that are possible from an electric shock.
  • Know the basic procedures in the event of an electrical shock.
  • Understand the importance of properly grounding tools and appliances.
  • Safely use electrical hand tools and electric meters.

2: Basic Electricity

  • Explain the flow of electrons and how it is accomplished.
  • Explain electrical power and how it is measured.
  • Explain Ohm’s law.
  • Calculate the potential, current, and resistance of an electrical circuit using Ohm’s law.
  • Calculate the electrical power of a circuit and the Btu/hour rating of an electrical resistance heater.

3: Electric Circuits

  • Explain the concepts of a basic electric circuit.
  • Explain the characteristics of a series circuit.
  • Explain the characteristics of a parallel circuit.
  • Describe how series circuits are used as control circuits in the HVAC industry.
  • Describe how parallel circuits are used as power circuits in the HVAC industry.
  • Describe how series-parallel circuits are utilized in the HVAC industry.

4: Electric Meters

  • Describe the use of the volt-ohm meter and clamp-on ammeter in the heating, cooling, and refrigeration industry.
  • Explain the operation of the basic electric analog meter.
  • Explain the operation of a digital volt-ohm meter.
  • Describe the conditions of resistance that can exist in an electrical circuit in reference to continuity.
  • Describe the source of energy for the operation of the analog voltmeter, ammeter, and ohmmeter.

5: Components, Symbols, and Circuitry of HVAC Wiring Diagrams

  • Identify the symbols of common loads used in HVAC
  • Explain the purpose of relays and contactors in HVAC
  • Identify the symbols of relays and contactors in HVAC
  • Identify pictorials and ladders types used in the HVAC

6: Contractors, Relays, and Overloads

  • Explain the parts and operation of contactors and relays.
  • Explain the application of contactors and relays in control systems.
  • Correctly install a contactor or relay in a control system.
  • Draw a simple ladder wiring diagram using contactors and/or relays
  • Troubleshoot contactors and relays.

7: Transformers, Thermostats, and Other Electric Control Devices

  • Explain the purpose of a transformer in a control circuit.
  • Explain the basic function of a low-voltage thermostat in a control system.
  • Draw ladder diagrams using low-voltage thermostats as operating controls.
  • Install low-voltage thermostats on HVAC equipment.
  • Explain the function and operation of pressure switches.


  • Demonstrate and practice the proper use and care of computers.
  • Draw ladder diagrams of the basic cooling electrical circuit.
  • Read and interpret ladder wiring diagrams used in the HVACR industry.
  • Develop skills in air conditioning and refrigeration controls.
  • Demonstrate an understanding of control theory as applied in HVAC systems.
  • Select and use the proper tools.
  • Demonstrate and practice the proper use and care of hand tools and test equipment.
  • A “critical thinking” component tailored to the course content and reflecting the college’s QEP initiative.



1 Test, repair, and/or replace HVAC-related electrical and control components, wiring and equipment.

2 Read, draw, and interpret high and low voltage control circuits.



Student will be graded on the competencies, objectives, and outcomes listed on the course syllabus plus all assigned tasks as they are completed.  The total points will be calculated into an overall grade.  There will be a Mid-term and a Final Examination given in this class.

 Grade Distribution:

Assignments (Attendance, notebooks)           - 20% 

Labs (Attendance, projects)                             - 30% 

Quizzes                                                            - 20%

Exams (final; written -15%, practical -15%)     - 30%

A=90  100                                                                                                        

B=80 - 89

C=75 - 79

D=66 -74                                                                                                                         

F=65 - Below

Course Policies

Required Items:

  1. Text,tools and safety gear are required for this class
  2. Students who do not possess the required safety gear and tools will not be able to attend lab
  3. They will receive a 0 for the day.

(Tools, Safety glasses, Proper shoes, safety gloves & and proper clothing)

Regular and punctual class and laboratory attendance, day and/or evening, is required. Tardiness is a form of absenteeism and is a distraction to the class, you will be counted absent after the first 30 minutes after class begins. Being tardy four times within a three week period will l result in an absence.
A student who is absent for any reason will be allowed to do makeup work at the discretion of the instructor. A student will be held responsible for lecture materials when covered on subsequent examinations. An excused absence will apply only to a student representing the school in an official capacity approved by the administration. Absences of a student are recorded from the official date of enrollment in the class.

Absences are considered excessive when more than 12.5 percent of the total contact hours of instruction in a semester, including lecture and lab, are missed. For example, in a three-credit-hour lecture class, students may be dropped after more than six contact hours of absences. In a four-credit-hour lecture/lab class, students may be dropped after more than eight contact hours of absences. Absences are counted regardless of whether they occur consecutively.


  1. Absolutely no food or drinks are allowed around computers.
  2. Computers are for school use only! No computers will be used for surfing the web or playing video games
  3. Any inappropriate use of computer will be considered means for withdrawal from class.

Cell Phone

  1. Cell phone use is not permitted in class.
  2. All phones will be set to vibrate or silent if you phone rings you will be given a warning if it rings twice you will be asked to leave and given a 0 for the day.
  3. If a call must be made step outside and take the call.
  4. No texting or listening to music while in lecture or lab this is considered very disrespectful and a distraction. If you are texting or listening to music you are not considered in class and will be counted absent.

Disruptive behavior will not be tolerated! Disruptive behavior includes talking out loud or interrupting a lecture, being Confrontational with the instructor or another student, making racist comments, sexual harassment,inappropriate comments, cheating and offensive language.


Additional Items


TOOL List:

All students enrolled in these courses are required to furnish the following basic set of tools. Students who do not have these required tools by the 12th class day may receive a failing grade for each day that they cannot complete their work assignments due to not having the proper tools.

HART 1403 and HART 1407 TOOLS

  1. Safety Glasses
  2. Work Gloves
  3. Bladed 4” Screwdriver 1/8" (For thermostats)
  4. Bladed 4” Screwdriver 3/16" (For circuit boards)
  5. Bladed 4” Screwdriver 1/4" (For contactors, breakers)
  6. Philip’s 4” Screwdriver #2
  7. 4” Nut Driver 1/4"
  8. 4” Nut Driver 5/16"
  9. 8” Needle Nose Pliers
  10. Wire Strippers
  11. 10” Channel Locks
  12. 8” Adjustable Wrench
  13. 10’ Adjustable Wrench
  14. Refrigeration Wrench
  15. 12' Measuring Tape
  16. Volt-Ohmmeter / Clamp-on Ammeter
  17. Tool Pouch
  18. Tubing Cutter
  19. Welding Striker
  20. Pocket Thermometer

Institutional Policies


A. Attendance:

Student absences will be recorded from the first day the class meets, and beginning Fall 2014, students who do not attend the first scheduled class meeting or contact the instructor will be dropped. Students should verify the drop is completed.

For fully online courses, an attendance verification activity is assigned and must be completed by the 3rd class day.

Effective Spring Term 2010, student absences will be recorded from the first day the class meets. Regular and punctual attendance in all classes and laboratories, day and evening, is required. Students who are absent for any reason should always consult with their instructors. Course syllabi must provide specific information regarding attendance, including, for courses involving the internet, online activity that constitutes “attendance.” Also, both tardiness and early departure from class may be considered forms of absenteeism. In all cases, students will be held responsible for completion of course requirements covered in their absence.

Additionally, it is the student’s responsibility to drop a course for nonattendance. Course instructors establish policy with regard to attendance in their respective syllabi and may drop a student for excessive absences. Absences are considered excessive when more than 12.5 percent of the total contact hours of instruction in a semester, including lecture and lab, are missed. For example, in a three-credit-hour lecture class, students may be dropped after more than six contact hours of absences. In a four-credit-hour lecture/lab class, students may be dropped after more than eight contact hours of absences. Absences are counted regardless of whether they occur consecutively.

In special programs with additional accreditation or certification standards, additional attendance requirements may be enforced but faculty must clearly explain these policies in their syllabi. Students who stop attending class for any reason should contact the instructor and the college registrar to officially withdraw from the class. Students may be required to consult with an advisor or designee before dropping.

Failure to officially withdraw may result in a failing grade for the course. It is the student’s responsibility to withdraw officially from a class by submitting a completed Withdrawal Form to the Admissions and Records Office.

B. Early Alert and Intervention

Alamo College instructors care about students’ success in every course.  During the semester, students may receive alert emails through the ACES account regarding their progress and ultimate success in a course.  Upon receipt of the email, students are to contact the course instructor to discuss specific tasks or actions to improve success in this course.  In addition, students will also need to meet with their Certified Advisor.  Discussions with faculty and Certified Advisors allows the student to identify actions that will help to successfully complete course requirements at the colleges of the Alamo Colleges District.

C. Student Responsibility for Success (Alamo Colleges District Policy F.6.2):

As members of the Alamo Colleges District learning community, students, faculty, staff and administrators all share the responsibility to create an atmosphere where knowledge, integrity, truth, and academic honesty are valued and expected. A clear acknowledgment of the mutual obligations of all members of the academic community emphasizes this implicit partnership in fostering the conditions necessary for student success.

In this relationship, the Alamo Colleges District provides institutional policies, procedures, and opportunities to facilitate student learning that encourage interaction, involvement and responsible participation. Inherent in the academic climate is the expectation that students will assume responsibility for contributing to their own development and learning. Academic success is directly tied to the effort students put into their studies, the degree to which they interact with faculty and peers, and the extent to which students integrate into the campus life.

1. Engagement

  1. Create connections and build relationships with faculty, staff and students (visit during office hours, join clubs and organizations, participate in student activities, etc.);
  2. Stay informed of policies, procedures, deadlines and events for academic and co-curricular activities;
  3. Complete all requirements for admission, registration, and payment by deadlines;
  4. Apply for financial assistance, if needed, complying with all federal, state and local regulations and procedures;
  5. Meet all federal, state and local health care regulations.

2. Communication

  1. Seek guidance from faculty, advisors or counselors for questions and concerns in regards to degree plans, major selection, academic status, grades, and issues impacting college success;
  2. Develop a peer support system to identify student contacts for questions, group assignments, etc. regarding academic and co-curricular activities;
  3. Communicate with College personnel promptly regarding academic or co-curricular concerns and assistance requests;
  4. Carefully consider the information provided by College personnel and make decisions using that information;
  5. Check the Alamo Colleges District’s Web Services regularly for emails, holds, student records, financial aid status and announcements;
  6. Submit disability documentation if seeking services and request academic accommodations in advance of each semester.

3. Academic Success

  1. Complete courses with passing grades and maintain good academic standing (2.0 GPA) status;
  2. Read and follow all syllabi;
  3. Purchase textbooks and required supplies in a timely manner;
  4. Attend classes regularly and on time, with as few absences, late arrivals, and early exits as possible;
  5. Arrive to class with all needed materials and completed assignments for that class period;
  6. Be attentive in class and actively participate as appropriate;
  7. Devote sufficient time for studying;
  8. Ensure integrity in all aspects of academic and career development;
  9. Accurately represent one’s own work and that of others used in creating academic assignments. Use information ethically and exercise appropriate caution to avoid plagiarism on all assignments;
  10. Notify faculty in advance or as soon as possible about absences and provide documentation as appropriate;
  11. Consult faculty members in advance when unable to complete projects, assignments, or take examinations as scheduled.

4. Self-Responsibility and Responsibility to Others

  1. Maintain accurate and complete degree/certificate major selection and contact information including name, address, phone number and emergency contact;
  2. Balance personal obligations and educational pursuits. Work with a counselor / advisor to design a realistic schedule that dedicates adequate effort to be successful in college studies;
  3. Know and follow the regulations and guidelines outlined in the Student Code of Conduct and Student Handbook;
  4. Maintain respectful and appropriate behavior within and outside the classroom;
  5. Ask for help when needed. Use all available resources and facilities provided by the College to enhance the learning experience;
  6. Attend scheduled advising sessions, tutorials, and other appointments. Cancel or reschedule only with good reasons as early as possible;
  7. Arrive prepared for tutorial sessions, bringing all needed materials (books, syllabi, rough drafts, calculators, assignment sheets, etc.).

D.  Textbook Availability

A student of this institution is not under any obligation to purchase a textbook from a university-affiliated bookstore. The same textbook may also be available from an independent retailer, including an online retailer.

E. Licensed Concealed Campus Carry

No open carry of firearms is allowed on all property owned, controlled, or leased by the College District, including vehicles operated by the Alamo Colleges District. Concealed carry of a handgun by persons licensed to carry may not be restricted except in locations signed as prohibited areas.

  • Special testing locations requiring a complete surrender of personal effects during testing will be signed as prohibited areas. 
  • Persons may be required to place their purse, backpack or briefcase away from their person, but within their view during tests at the direction of their instructor or test administrator.
  • License holders carrying on campus intending to access prohibited areas must leave their weapons locked in their vehicles.  College lockers are not authorized for storage of handguns by license holders.

Disciplinary Sanctions

Open carry, intentional display, unlicensed carry, and carry in spite of signed prohibition are subject to employee and student discipline, as well as possible prosecution. Unintentional display of a weapon by a license holder must be avoided.  Police will exercise their enforcement discretion. 

If you see a person openly carrying or deliberately displaying a firearm:

  • Call the Alamo Colleges District Police 210-485-0911
  • Do not confront the person or ask if the person has a permit


While other exams are given at the discretion of the instructor, a final assessment is given at the end of each semester for each course. The Final Exam Schedule changes with each term and differs from normal class meeting dates and times. See the Final Exam Schedule in the Catalog/Schedule of Classes in the left hand navigation bar.

A student who must be absent from a final evaluation should petition that instructor for permission to postpone the evaluation. A student absent without permission from a final evaluation is graded "0" on the exam.

Incomplete Grades.  The conditional grade of “I” may be issued to a student having a passing average on all completed coursework but for a justified reason, such as illness or death in the family or by providential hindrance, has been prevented from taking the final examination or completing other required coursework. The “I” becomes an “F” in one hundred twenty (120) calendar days from the end of the term unless the student completes the balance of the coursework with a performance grade of “D” or higher. Re-enrollment in the course will not resolve the “I.”  The student and faculty must fill out an Incomplete Contract, clearly defining the work remaining to be finished.

College Policies

St. Philip’s College Mission Statement

St. Philip's College, founded in 1898, is a comprehensive public community college whose mission is to empower our diverse student population through personal educational growth, ethical decision-making, career readiness, and community leadership. As a Historically Black College and Hispanic Serving Institution, St.Philip's College is a vital facet of the community, responding to the needs of a population rich in ethnic, cultural, and socio-economic diversity. St. Philip's College creates an environment fostering excellence in academic and technical achievement while expanding its commitment to opportunity and access.

 The college fulfills its mission by offering:

1) General courses in arts and sciences leading to an associate degree.

2) Transfer education for students desiring to attend senior institutions.

3) Developmental courses that improve the basic skills of students whose academic foundations require strengthening.

4) Applied Science and technical programs leading to an associate degree or certificate designed to prepare students for employment and/or to update crucial skills.

5) Workforce and Career development training programs for business, industry and government.

6) Continuing education programs for occupational and educational enrichment or certification.

7) Counseling and guidance designed to assist students in achieving their educational and professional goals.

8) Educational support services including library services, tutoring, open usecomputer labs and writing center.

9) Services and appropriate accommodations for special populations, to include adult literacy and distance education.

10) Quality social, cultural, and intellectual enrichment experiences for the community.

11) Opportunities for participation in community service and economic development projects.

St. Philip’s College Quality Enhancement Plan: Ethical Decision Making

St. Philip's College is committed to quality education, as such the focus of the 2016 Quality Enhancement Plan is ethical decision-making which is the ability to connect values and choices to actions and consequences.

QEP FOCUS STATEMENT: Ethical Decision–Making is the ability to connect values and choices to actions and consequences.

QEP GOAL: Students engage in specific measurable academic activities to enhance their ethical decision–making skill

QEP Student Learning Outcomes:

  • Values: Students gain skills to assess their own values.
  • Ethical Issues: Students identify and are knowledgeable of ethical issues.
  • Perspectives: Students analyze various ethical perspectives.


  1. Stop and think to determine the facts.
  2. Identify options.
  3. Consider consequences for yourself and others.

          Make an ethical choice and take appropriate action

 For more information on the Quality Enhancement Plan,

click HERE



Policies for St. Philip's College:

A. All of the colleges of the Alamo Colleges District are tobacco free.

B. Alamo Colleges District DPS Emergency Phone Numbers:

Emergency Phone (210) 485-0911

General Phone (210) 485-0099

Weather Phone (210) 485-0189 (For information on college closures)

C. Disability Access Statement – In accordance with the Americans with Disabilities Act (ADA) and Section 504 of the Rehabilitation Act, it is the responsibility of the student to self-identify with the campus Disability Support Services office. Only those students with appropriate documentation will receive a letter of accommodation from the Disability Services office. Instructors are required to follow only those accommodation and/or services outlined in the letter of accommodation. For further information, please contact the Disability Services office at (210) 486-2199 or SWC (210) 486-7175 or visit the office located:

MLK Campus – Located at the Sutton Learning Center, Ste. 102

SWC – Located in the LIFEspace office, Bldg. 1, A-135

Web -

If you have specific needs, please discuss them privately with your instructor.

D. Mandatory Student Training for Online Classes:

**Note** If you are new to online classes, you are REQUIRED to take the St. Philip’s College Orientation to Online Learning course, OLRN 0001. The free, self-paced, online course will familiarize you with Canvas and will provide helpful tips on being a successful online learner. Register for the OLRN course the same way as any other course. See or call 210-486-2239 for more information.