HVA 120 RESIDENTIAL HVAC INSTALLATION

Transcription

1 HVA 120 RESIDENTIAL HVAC INSTALLATION PRESENTED AND APPROVED: AUGUST 9, 2012 EFFECTIVE: FALL

2 Prefix & Number HVA 120 Course Title: Residential HVAC Installation Purpose of this submission: New X Change/Updated Retire If this is a change, what is being changed? Update Prefix X Course Description (Check all that apply) Title Course Number Format Change Credits X Prerequisite X Competencies Textbook/Reviewed Competencies-no changes needed Does this course require additional fees? X No Yes If so, please explain. Is there a similar course in the course bank? X No Yes (Please identify) Articulation: Is this course or an equivalent offered at other two and four-year universities in Arizona? X No Yes (Identify the college, subject, prefix, number and title: Is this course identified as a Writing Across the Curriculum course? X No Yes Course Textbook, Materials and Equipment Textbook(s) Title Refrigeration & Air Conditioning Technology 7th Edition Author(s) Whitman, Johnson, Tomczyk Publisher Cengage ISBN Software/ Equipment Modality Check all that apply Title Author(s) Publisher ISBN N/A X On-ground On-line Hybrid ITV Web-enhanced Course Assessments Description of Possible Course Assessments: Exams standardized for this course? Midterm X Final X Other (Please specify): Weekly tests Where can faculty members locate or access the required standardized exams for this course? Student Outcomes: Identify the general education goals for student learning that is a component of this course. Quizzes, tests, written homework assignments, lab assignments, lab final examination, written final examination. Are exams required by the department? No X Yes Lab and Written Final Examination Ken Kramer, Instructor, BHC Campus 1. Demonstrate appropriate safety procedures required for HVAC system installation. 2. Demonstrate the correct procedures for

3 installing refrigeration system piping, including copper, PVC, and steel. 3. Demonstrate the ability to work effectively as part of an installation team and analyze why teamwork is important to the HVAC installation technician. 4. Understand local, state and Federal building codes used when completing an HVAC installation. 5. Demonstrate the methods used to complete a building heat load calculation. 6. Demonstrate the methods used to design a duct system based on heat load calculations. 7. Discuss and analyze the installation techniques for various types of ducting. Check all that apply: 1. Communicate effectively. a. Read and comprehend at a college level. X b. Write effectively in a college setting. Method of Assessment Complete weekly reading assignments and then complete written homework assignments based on those reading assignments. 2. Demonstrate effective quantitative reasoning and X problem solving skills. Complete mathematical calculations used to determine heat load calculations and then design a duct system based on those heat load calculations. 3. Demonstrate effective qualitative reasoning skills. X Complete HVAC installations including package unit and a split system. 4. Apply effective methods of inquiry. a. Generate research paper by gathering information from varied sources, analyzing data and organizing information into a coherent structure. b. Employ the scientific method. 5. Demonstrate sensitivity to diversity a. Experience the creative products of humanity. b. Describe alternate historical, cultural, global perspectives. Office of Instruction Use only: CIP Code: ONET Code: Minimum Qualifications:

4 COURSE INFORMATION Initiator: Ken Kramer, Frank Port Date of proposal to Curriculum Sub-Committee: August 9, 2012 Effective Semester/Year Fall 2013 Prefix & Number: HVA 120 Full Title: Residential HVAC Installation Short Title: HVAC Installation Catalog Course Description: Covers air distribution systems, including airflow, pressures and various types of ducting systems including fiberglass duct-board, flexible duct work, and sheet metal duct work. Methods used to calculate heat gain and heat loss quantities in order to determine the proper sizing of heating and cooling equipment will be covered. Using those heat load calculations to properly size the duct work for a system will then be discussed. Alternative energy sources and energy efficient units will also be discussed.. SUN Course Number: Credit Hours: 3 Lecture Hours: 2 Lab Hours: 2 Prerequisite(s) Co-requisite(s) Successful completion of HVA 105 or permission of academic chair Intended Course Goals By the end of the semester, students will be able to: 1. Use the proper safety procedures required for an HVAC system installation. 2. Install refrigerant, condensate, and gas piping required for an HVAC installation. 3. Be able to work effectively with others as a team to complete an HVAC system installation. 4. Use local, state and Federal building codes to design and install an HVAC system. 5. Use the proper methods to complete a heat gain and heat loss calculation for a structure, 6. Use the proper methods to design a duct system based on those heat load calculations. 7. Use the proper installation techniques to install various types of ducting.

5 Course Competencies and Objectives By the end of the semester, students will be able to: Competency 1 Describe some of the ways the building or structure design can affect the type of HVAC system utilized for the structure. Objective 1.1 Describe the three ways heat is transferred into a building structure. Objective 1.2 Describe and discuss the ways that air is conditioned for cooling. Objective 1.3 Compare and contrast a packaged air-conditioning system and a split system. Objective 1.4 Discuss and analyze ways in which high efficiency is accomplished in HVAC systems. Objective 1.5 Discuss and demonstrate the processes used to determine the tonnage of a system needed for the size of the structure. Objective 1.6 Discuss and demonstrate methods used to complete a building heat load calculation. Competency 2 Discuss the safety precautions including the use of personal protective equipment (PPE) used when performing HVAC system installation. Objective 2.1 Demonstrate the correct way to lift HVAC equipment for installation. Objective 2.2 Discuss the potential hazards of working in attics and crawl spaces. Objective 2.3 Describe and analyze the potential skin damage from escaping refrigerants. Objective 2.4 Discuss the precautions necessary when working with metal ducting and sheet metal. Objective 2.5 Discuss the cautions required while working with the electrical circuit including lockout/ tag-out procedures, and safely working in high moisture situations. Objective 2.6 Discuss the safety precautions required when working around installation Cranes. Competency 3 Identify and demonstrate the use of the basic tools and equipment required for HVAC and refrigeration servicing and installation. Objective 3.1 Identify and describe the hand tools typically used by the air-conditioning, heating, and refrigeration technician. Objective 3.2 Identify and describe other equipment, including test equipment, used to install and service air-conditioning, heating, and refrigeration systems. Competency 4 Identify and describe the components of a forced-air system. Objective 4.1 Describe the characteristics of the propeller and the centrifugal blower. Objective 4.2 List and describe the different types of air measuring devices. Objective 4.3 Demonstrate the procedure used to obtain basic air-pressure measurements. Objective 4.4 Demonstrate the procedure to obtain air quantity measurements. Competency 5 Discuss and analyze the factors that contribute to good air balancing and diffusion. Objective 5.1 Describe the most commonly used blower motors and drives. Objective 5.2 Describe the most common ducting systems, including plenum, extended plenum, reducing plenum, and perimeter loop systems, and analyze their appropriate uses. Objective 5.3 Discuss airflow,and analyze the factors that encourage good airflow through a duct system. Objective 5.4 Discuss the purpose of a return air system and analyze its impact upon the system s airflow. Objective 5.5 Discuss the methods used to design a duct system based on the heat load calculation. Then design a duct system based on those calculations. Competency 6 Identify the common fastening devices utilized in HVAC systems and installation. Objective 6.1 Identify common fasteners used with wood.

6 Objective 6.2 Identify common fasteners used with sheet metal. Objective 6.3 Identify typical machine screw heads. Objective 6.4 Identify the types of fasteners that are typically used in masonry. Objective 6.5 Describe the use of hanging devices for piping, tubing, and ducting. Competency 7 Discuss best practices for the installation of residential package and split aircondition systems. Objective 7.1 Identify the three primary crafts involved in air-conditioning installation. Objective 7.2 Describe the process for installing metal duct work, flexible duct work, and ductboard systems. Objective 7.3 Describe installation techniques that minimize unit vibration including the correct use of fasteners. Objective 7.4 Discuss and analyze installation conditions that require the use of a crane for setting the system unit in place. Competency 8 List, describe, and demonstrate the correct techniques for the installation of piping to support a residential HVAC system. Objective 8.1 Identify the correct piping material and demonstrate appropriate techniques for the installation of condensate drains and refrigerant piping. Objective 8.2 Demonstrate the steps required for initial equipment start-up, including charging, leak testing of systems, and examination of all electrical connections and moving parts. Objective 8.3 Locate and describe the manufacturers specific initial start-up instructions. Competency 9 Identify the low-voltage, operating, and safety controls used in air-conditioning equipment. Objective 9.1 Describe the control sequence for an air conditioning system. Objective 9.2 Explain the function of the 24-V control voltage. Objective 9.3 Describe the space thermostat. Objective 9.4 Describe the compressor contactor. Objective 9.5 Explain the operation of the high- and low-pressure controls. Objective 9.6 Discuss the function of the overload devices and motor winding thermostat. Objective 9.7 Discuss the winding thermostat and the internal relief valve. Objective 9.8 Identify the operating and safety controls on a typical HVAC system Objective 9.9 Compare modern and older control concepts. Objective 9.10 Describe how crankcase heat is applied in some modern equipment. Competency 10 Discuss the impact of add-on air-conditioning systems to existing ductwork and electrical service. Analyze its impact upon airflow, duct sizing, control wiring and phasing. Objective 10.1 Describe year-round air conditioning and its impact upon system design. Objective 10.2 Discuss the three typical year-round air-conditioning systems. Objective 10.3 List the five ways to condition air. Objective 10.4 Determine airflow for a cooling system. Objective 10.5 Describe why a heating system normally uses less air than a cooling system. Objective 10.6 Explain two methods used to vary the airflow in the heating season from that in the cooling season. Objective 10.7 Describe two types of control voltage power supplies used in add-on air conditioning.

7 Objective 10.8 Describe add-on air conditioning. Objective 10.9 Explain package all-weather systems.