This exceptionally produced trainee guide features a highly illustrated design, technical hints and tips from industry experts, review questions and a whole lot more! Key content includes: Alternating current, Compressors, Refrigerants and Oils, Leak Detection Evacuation Recovery and Charging, Metering Devices, Heat Pumps, Basic Maintenance, Chimneys Vents and Flues, Sheet Metal Duct Systems, Fiberglass and Fabric Duct Systems, Commercial Airside Systems, Air quality Equipment, and Introduction to Hydronic Systems.
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Instructor's Resource's 978-0-13-518532-2
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Access Card ONLY for Trainee Guide (does not include print book) 978-0-13-518704-3
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ELECTRONIC Access Code ONLY for Trainee Guide (must be ordered electronically via OASIS; does not include print book) 978-0-13-518718-0
Alternating Current (10 hours)Presents the basic concepts of alternating
current generation and use. It also discusses how single- and three-phase
alternating current is used to power resistive and inductive circuits in
HVAC/R equipment. Various types of transformers used in HVAC systems are
identified. The basic operation of single- and three-phase motors is
explained. In addition, the process of safely testing AC-powered devices is
covered. (Module ID 03206)
Compressors (12.5 hours) Presents refrigerant compressors. Since the
compressor is considered the heart of any HVAC system, its good health and
well-being are crucial to overall system performance and reliability.
Compressors can take many forms, but they all perform the same basic
function. They create the pressure differential in the system that allows
refrigerant to move through the metering device and through the condenser and
evaporator coils where heat is exchanged. Because the compressor is the most
expensive component in most HVAC systems, it is important that technicians be
able to correctly diagnose and correct problems that can affect compressor
operation to avoid a costly compressor replacement. (Module ID 03302)
Refrigerants and Oils (15 hours) Discusses the refrigerants and oils used in
modern refrigeration and air conditioning systems. Today, new technologies
and stringent environmental laws are driving changes in the HVAC industry.
Older refrigerants that damage the environment are being phased out and
replaced with more environmentally-friendly refrigerants. These new
refrigerants often require new compressor lubricating oils. These modern
refrigerants and oils also have new handling and service requirements with
which technicians must be familiar. (Module ID 03301)
Leak Detection, Evacuation, Recovery, and Charging (30 hours) Provides
trainees with guidance related to servicing the refrigerant circuit of HVAC
systems. The four essential service tasksleak detection, evacuation,
recovery, and chargingare covered in detail. In addition, information
related to the US EPAs requirements for providing these services in an
environmentally sound manner are also provided. Developing the necessary
skills to provide these services are vital to the future success of trainees
in the HVAC/R trade. To that end, a significant amount of this module is
devoted to hands-on practice and the successful completion of its required
performance tasks. (Module ID 03205)
Metering Devices (12.5 hours) Introduces metering devices used in the
mechanical refrigeration cycle. The primary function of metering devices is
presented, along with related components such as the distributor. The
operation of capillary tube, fixed-orifice, and expansion-type metering
devices is explored in detail. In addition, the process of selecting and
installing thermal expansion valves specifically is covered. (Module ID
03303)
Heat Pumps (20 hours) Introduces heat pumps, a very efficient form of
electric heat. Compared to straight electric heat, heat pumps can
consistently operate at higher energy efficiency. This module presents the
operation of heat pump systems in detail with additional emphasis on the most
common form of supplemental heat, electric resistance heating elements. The
installation considerations of both split and packaged heat pumps systems are
also reviewed. (Module ID 03211)
Basic Maintenance (20 hours) An introduction to common tasks associated with
the basic maintenance of HVACR systems. Specific tasks, such as lubrication
and belt installation, are discussed in detail. In addition, the module
describes the general procedures for performing inspections and periodic
maintenance of gas furnaces and common cooling/heat pump systems, including
how to complete the required documentation. (Module ID 03215)
Chimneys, Vents, and Flues (5 hours) Covers the chimneys, vents, and flues
that are used with fuel-burning furnaces and boilers. All fuel-burning
appliances must have adequate air for complete combustion and must have a
means to safely remove the products of combustion. Different types of
fuel-fired furnaces and boilers have different and unique requirements for
venting the products of combustion. (Module ID 03202)
Sheet Metal Duct Systems (10 hours) Covers sheet metal duct systems. While
other materials can be used to fabricate air ducts, sheet metal has been and
continues to be one of the most popular materials for this purpose. Major
advantages of sheet metal ducts systems include low resistance to airflow,
strength, and durability. In addition to using time-tested assembly methods,
modern sheet metal duct systems need to be sealed to prevent leakage of
conditioned air, and insulated to prevent heat loss or heat gain through the
walls of the duct. (Module ID 03213)
Fiberglass and Fabric Duct Systems (7.5 hours) Reviews the application and
methods of fabricating fiberglass duct systems. In addition, the installation
guidelines for installing a fiberglass system are presented, along with the
methods to repair damaged components. The module concludes with coverage of
fabric-based duct systems, which have become increasingly popular in a
variety of applications. (Module ID 03214)
Commercial Airside Systems (12.5 hours) Introduces the air distribution
systems used in commercial structures such as schools and office buildings
that are divided into comfort heating and cooling zones. The module covers
the various types of systems, as well as the air terminals and air source
equipment used in these systems. Accessories commonly used with commercial
systems are also covered. (Module ID 03201)
Air Quality Equipment (5 hours) Introduces the factors related to indoor air
quality and human comfort. Since humidity is a common comfort factor for all
types of buildings, the equipment used to control humidity is presented in
detail. The module also covers the air filtration materials and the
introduction of outside air into the indoor environment. (Module ID 03204)
Introduction to Hydronic Systems (15 hours) Introduces hydronic heating
systems. In hydronic heating systems, fluids (typically water) are used to
transfer heat. Fuels such as gas or oil are used to heat the water in a
boiler. Pumps then circulate that heated water throughout the structure where
terminal devices such as radiators release the heat into different areas.
(Module ID 03203)
