Year2

Year 2 Apprenticeship

Costs:

Year 2

$1292.00

*Required Books

 

$90.00

ICC Residential

 

$81.50

ICC Fuel Gas

 

$81.50

ICC Mechanical 

 

$141.95

Delmar 6th Edition
Refrigeration & AC Technology

(You may have the above books from Year 1)
*Does not include shipping and handling

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Year 2 (150 hours of instruction)

Year 2 Program Learning Objectives:

Year 2

1. The apprentice will demonstrate new knowledge in the subjects of Heat Loads, Indoor Air Quality, Electrical, Blueprints, and Appliance Installation; by earning an overall average score of 75% or higher in the combined year’s curriculum.

2. The apprentice will actively participate in the programs discussion forums, as confirmed by the forum logs and discussion grades, by earning an overall average score of 75% or higher in the combined year’s curriculum.

Intro to Blueprints (24 hours)

  • Introduction

Blueprints are sets of documents that provide detailed information about structures being built and the materials needed for construction.  All blueprints contain standard components such as a title block, border, drawing area, revision block and legend that ensure everyone using the blueprint has the same, accurate information.  Understanding the basics of reading blueprints is a significant skill for all members of the construction trade.  When you have completed this module, you will be able to do the following:
                Recognize and identify basic blueprint terms, components, and symbols.
                Relate information on blueprints to actual locations on the print.
                Recognize different classifications of drawings.
                Interpret and use drawing dimensions.

  • Components of the Blueprint

Civil, Architectural, Structural, Mechanical, Plumbing, Electrical, Computer-Aid Drafting,

  • Scale

Architect’s scale: 3”=1 foot

  • Lines of Construction

Students will be introduced to and know how to read all the basic lines used in blueprints

  • Abbreviations, Symbols, and Keynotes

Students will be introduced to and know how to interpret the basic abbreviations, symbols, and keynotes used in blueprints

  • Using Gridlines to Identify Plan Locations

Students will be introduced to the use of Gridlines on blueprints

  • Dimensions

Students will be introduced to a variety of drawings including Isometric, Orthographic, Schematic, and learn to measure the actual structure to verify the measurements in the blueprints are accurate.

  • Architect’s Ruler

You will obtain an architect’s rule, about 12-13” long.  We will learn the standard measurements in feet, inches, and fractions of an inch.

  • Architect’s Scale Ruler

Attached are some additional directions which should help you figure out how to use an Architect’s Scale Ruler and an assignment to take some readings.  Reading the dimensions and distances on a floor plan or other scale drawing is very important in HVACR installation work as well in doing load calculations to size equipment to a building. This is one skill that can set you apart from other HVACR employees.

Appliance Installation (24 hours)

This section is designed to cover the issues of residential / light commercial HVAC appliance installation. Your overall focus for this section is to study and discuss the requirements that dictate the installation of a typical HVAC appliance with safety for the occupants as the primary objective in addition to efficient and proper operation of the appliance. Additional topics that go with this section are the concepts of professionalism and craftsmanship when doing your job. After all, if you are a professional, the installation of an appliance will be safe and efficient in operation and aesthetically pleasing to the eye.

The four week conference areas are where the action is for this section. Each of them has materials to study and discuss. The content is made up from different sources that include:

  • International Code References
  • Manufacturer’s Installation Instructions
  • Appliance Specification Sheets
  • Good Install Photos
  • Bad Install Photos

Learning Modules cover the following topics:

  • Equipment Installation Instructions
  • International Fuel Gas Code
  • The Good, The Bad, The Ugly
  • Appliance Installation
  • Installation Site Surveys
  • Manufacturers Specification Sheets
  • Specific Appliances / IFGC Commentary
  • Oil Burner Set-up
  • Oil Furnaces
  • Applying the Code
  • Roof Top Units

Heat Loads (24 hours)

  • Fundamentals of Load Calculations

This module introduces you to residential load calculations. This is a method to determine the heating and cooling Btu/h loads of structures prior to installing HVAC/R systems to meet those loads. We will focus on the residential version in this module. Commercial load calculations are covered in another course.  The accepted method for residential load calculations is the Air Conditioning Contractors of America (ACCA) Residential Load Calculation, 8th Edition (MJ8)  An abridge version is available for contractors and technicians that follows the concepts of MJ8 and is acceptable in the HVAC/R industry as well in lieu of using MJ8.  This abridged version of the eighth edition of ManualJ entitled Manual J Abridged Edition (MJ8-AE), provides complete instructions for estimating heat loss and heat gain for single-family, single-zone residential structures.

This Load Calculation course and all modules will focus on utilizing MJ8-AE. The manual provides thorough instructions for estimating heat loss and heat gain for residential structures and helps to simplify complicated procedures that are often used on a variety of home applications. Other features include: basic principles of heat transfer, R-Values, U-Values, and heat transfer multipliers; and a step-by-step example of a single-zone, single-family, detached calculation for an entire house room-by-room.

The manual offers the latest approaches and recognized values, it enhances entry into computerized Manual J solutions, and it provides numerous examples for calculating component (i.e., wall, windows, ceilings, etc. ) heat loss and heat gain, and details the steps in the design procedure after loads are determined.  However, the comprehensive eighth edition of Manual J should be used for most new homes, homes that had significant upgrades or modifications, or homes that have non-standard design elements (i.e. National Fenestration Rating Council labeled glass, large glass areas, atriums, excessive internal loads, heat recovery systems, etc. ).

A prerequisite for this course and all its modules is a good understanding of the refrigeration cycle, and basic air conditioning and heat pump concepts and terminology. You should know how to install and service these systems in residential structures. If you do not have this knowledge, this course will not be of much value. You should also be proficient in manual calculations and basic math skills.

This module follows the tenants of the Air Conditioning Contractors of America (ACCA) HVAC Quality Installation Specifications (QI). These industry standards were developed from contribution from contractors and other interested parties. These contributors include original equipment manufacturers (OEMs), public, private, and federal electric utilities, and industry associations. The QI specifications are actually a set of nationally accepted requirements for “quality installations”. These accepted requirements, standards, procedures, and forms of documentation are available with a focus on the installation and how well the actual HVAC equipment is designed, selected, and installed. The QI establishes a set of minimum criteria for use with the proper installation, maintenance, and servicing of HVAC systems. It focuses on energy efficiency, comfort, and indoor air quality in residential and commercial applications. The ACCA Standard is designed to assist contractors as they go through the process of determining which approach to follow when they design, install and service a system.
During this module, we will reference the QI as it pertains to specific topics concerning the fundamentals of load calculations.  At the end of this module you should be able to answer questions related to the basic fundamentals of residential load calculations.

Module Objectives:

  • Understand what a load calculation is
  • Understand the ACCA QI involvement in load calculations
  • Understand the basics of proper sizing, including under and over sizing
  • Understand how to avoid an incorrectly sized system
  • Understand things that influence load calculations
  • Understand how insulation factors into load calculations and equipment sizing
  • Understand heat transmission, including what heat is, how it travels, and how it is measured
  • Understand sensible heat versus latent heat
  • Understand structure material properties
  • Understand R-values
  • Understand wall properties
  • Understand windows and glass door properties
  • Understand ceiling/roof properties
  • Understand thermal properties of materials
  • Understand U-values
  • Understand infiltration and exfiltration
  • Understand the survey and measurements
  • Understand design conditions for load calculations
  • Understand temperature difference (TD)
  • Understand cooling load temperature difference (CLTD)
  • Understand the impact of internal gains, duct loss and gain, and the reason for room by room load calculations
  • Review basic load calculation methods

Module Topics are:

  • Intro to Heat Loads
    • The House Plan
    • Heat Load Tables
  • Conduction Loads
  • Solar Gain
  • Infiltration and Ventilation Load
  • Duct Loads
  • Complete Heat Loads

Indoor Air Quality (18 hours)

After successful completion of the course, students should be able to correctly discuss all of the following:

Also, students will learn best practices and the importance of Indoor Air Quality management:

  • Reduce sources of moisture
    • Control ground moisture, repair leaks
    • Duct clothes dryers and other exhaust fans outdoors
    • Ensure proper venting of combustion appliances
  • Control movement of moist air
    • Seal the building shell and ducts
    • Control house pressure balances
  • Use mechanical ventilation that targets remaining moisture sources

And the module on Air Flow Basics has the following objectives:

  1. Understand terminology applicable to residential airflow
  2. Be able to identify factors of controlled and uncontrolled airflow
  3. Recognize, measure and mitigate issues of concern: safety, economy and comfort
  4. Know what physical processes occur from within and without and which affect movement of air through a building
  5. Relate HVAC and other air-moving equipment performance to overall building performance.
  6. Identify holes and penetrations that affect residential air-flow and determine how to best ensure building safety and comfort
  7. Understand mitigation measures relative to moisture, pollutants and mold or mildew.
  8. Understand and recognize occurrence of air circulation within the building envelope

Topics covered are:

  • Indoor Air Quality
  • Indoor Pollutants
  • Combustion By-products
  • Biological Particles
  • Asbestos and Fiberglass
  • Moisture Management
  • Water Vapor and Humidity
  • Preventing Moisture Problems
  • Ventilating Attics and Crawl Spaces
  • Whole-House Mechanical Ventilation
  • Sizing Ventilation Systems
  • Exhaust Ventilation
  • Supply Ventilation
  • Balanced Ventilation Systems
  • Heat and Energy Recovery Ventilators
  • Air Conditioners and Dehumidifiers
  • Pollutant Control Strategies

Electrical 1 (24 hours)

The importance of being able to calculate conversions from one energy form to another is understated for technicians. Your ability to do so is important in your job.  But, equally important is the ability to recognize what is happening when you see processes that are energy conversions occurring.  This course covers the following topics:

  • What is Energy
  • Atomic Theory
  • Basic Circuits
  • Parallel Circuits
  • Power
  • Magnetism
  • Alternating Current
  • Loads
  • Capacitors
  • Resistance

Electrical II (36 hours)

  • Transformers

Transformers play a big role in the operation of HVAC/R systems. They allow the power to be shipped from generation plants economically and then break the energy level down to safer, more manageable levels. We typically work with small transformers for control voltages in our systems. Students will learn how a transformer can step voltageup or down. We will discuss the induction process with an iron core to carry the magnetism to the secondary coil. We will explore the turns ratio and how that determines the secondary voltage. When finished, you will have an understanding of the connection logic for multi-voltage primarytransformers. We will discuss how to paralleltransformers to increase VA ratings and have some guidelines for checking out suspected faulty ones. You will learn what type of utility servicetransformer is installed by measuring voltage.

  • Power Wiring

The topic power wiring concerns the utility electrical supply from the generation source to the HVAC/R system. We have studied some of that in prior courses. We will review what we know and then take it further in this module. This presentation will concentrate on the power supply after it arrives in the structure. Our focus will be on residential and light commercial buildings. We will complete the module with an explanation and study of the "hot" side of electrical schematics. Remember that most of our work (estimated @ 75% to 80%) deals with electrical systems and problems. Your understanding of this subject is important to your success as a technician.

  • Odds and Ends of Electrical Drawings

It’s my intention to try out some animated schematics in this lesson. I am interested in getting you to understanding the connection between an electrical diagram/schematic and the reality of the equipment components of the  system.

  • Basic Electric Motor Theory & Shaded Pole Motors

In this Module we will study how Alternating Current  is used to create a motor that is economical, dependable and the most common motor used in our world.
Our Learning Objectives will be:

1)  Review the Basics of Magnetic and Electro-Magnetic Principles
2)  Describe the operation of a Basic Electric Motor and the role of AC,        Induction and Magnetism
3)  Describe the Factors that determine an Induction Motor’s Speed
4)  Describe the physical factors and characteristics of Shaded Pole Motors

  • Open and Hermetic Motors

In this Module we will learn to distinguish the differences between Open and Hermetic Motors and determine their different applications.  We will also examine motors that use start and run windings to develop rotation. As we progress, we will review Capacitors so we can move on to Capacitor Motors.
Our Learning Objectives will be:
1)   Explain the differences and applications of Hermetic and Open    Compressors
2)   Describe  the relationship of the start and run windings in creating rotation in induction motors.
3)   Describe the physical factors and characteristics of Split Phase Motors
4)   Demonstrate the characteristics of Capacitors.

  • Capacitor Motors

In this module we will look at Induction Motors that use capacitors and how the capacitors develop high starting torque and good running efficiency
Our Learning Objectives will be:
1. Describe the operation of a Basic Electric Motor and the role of Start and Run Capacitors
2. Describe the electrical differences between Open and HermeticCapacitor Motors
3. Describe the physical factors and characteristics of Capacitor Motors
4. Identify the wiring schematics of Capacitor Motors

  • Three-phase Motors

In this Module we will analyze Three Phase Motors. As in the other motors, we will find that an understanding of any induction motors required us to comprehend magnetism, Alternating Current and Induction. In addition, if we are looking at Three Phase Motors we should pay close attention to Three Phase Power as we look back at AC.

  • The Application of Electric Motors

In the previous Modules we learned the theory of operation and the different types of electric motors. Now we must find out where and under what conditions these motors may be used.  We will also learn which electric motor characteristics are needed for a particular usage. This usage referred to as an “application”, which is an important topic with HVAC/R equipment, but especially critical here with motors. In other words, you have to have the right motor for the right job.

  • Diagnosing and Replacing Electric Motors

In this module we will use the knowledge of the electric motor operation, application and identification to build troubleshooting skills, installation and replacement tasks. A concise and logical troubleshooting progression will be developed. The use of electrical meters and wiring schematics will be incorporated into a practical diagnostic process.

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