HVACR
201
by
Joseph Moravek,
John E. Hohman
Theoretical knowledge is presented alongside practical,
industry-relevant examples, allowing both entry-level technicians
and 2nd year apprentices to easily learn and apply key HVACR
concepts.
The second installment in a
series of useful and resourceful guides, HVACR 201, continues
to build upon the basics of the HVACR trade.
The result of a joint effort by
industry leading Air Conditioning Contractors of America (ACCA),
PHCC Educational Foundation Plumbing Apprentice & Journeyman
Training Committee (PHCC Educational Foundation), and the Refrigeration Service Engineers Society (RSES), the book begins
with simpler HVACR concepts and progresses into increasingly complex
theories and skills.
Starting with coverage of all of
the important components of a system, the book advances to deal with
topics in electrical ,heating, motors , and cooling- then moving to
troubleshooting and installation procedures.
Contents:
Year 2, First Semester
Chapter One: Review of Refrigeration Cycle
Basic refrigeration cycle
Saturation, superheat and subcooling
Compressors
Metering devices
Evaporators
Chapter Two: Compressors
Reciprocating
Scroll 2 stage
Hermetic and semi-hermitic
Rotary types, how they work, applications
Chapter Three: Refrigerants
and Lubricants
Applications and required
lubricants
CFCs, HCFCs, chemical strength
Safety and handling
EPA certification
Recovery and recycle
Chapter Four: Refrigerant
Handling Certification
Chapter Five: Condensers
Air cooled
Water cooled
Evaporative
Chapter Six: Metering Devices
Capillary tubes
Fixed orifice/plate
Thermostatic expansion valves (TXV)
Electronic expansion valves (EXV)
Chapter Seven: Accessories
Receivers
Accumulators
Service valves/access ports
Suction/liquid line heat exchangers
Low ambient controls
Reversing valves (defrost, heat pump)
Relief valves
High/low pressure control
Vibration eliminators
Crankcase heater
Chapter Eight: Evaporators
Types (plate, fin) and
applications
Latent and sensible heat removal
Superheat
Direct expansion and flooded
Pressure drop
Moisture removal
Defrost applications
Chapter Nine: Evacuation and
Charging
Leak testing methods
Troubleshooting
Recovery
Vacuum pumps
Dehydration
Safety
Chapter Ten: Heating
Types of heating appliances
Components, burners and valves
Boilers: water and stream
Sequence of operation
Pumps
Venting
Gas pipe capacity
Ignition devices
Combustion process and testing
Code and safety
Carbon monoxide
Electric and strip
Radiant
Venting
Combustion and secondary air
Gas manifolds
Temperature controls
Safety and Limit controls
Sequence of operation
Chapter Eleven: Electrical
Ohms law review and
application
Transformers, voltage, line vs load
Types of wire and wire sizes
Circuits and schematics
Relays
Capacitors
XFMR
Logic
Sources: single and 3 phase
Switches and loads
Contactors
Troubleshooting/testing
Starters
Overload protectors/overcurrent protection (fuses & circuit
breakers)
Overcurrent/fuses
Grounding
Breakers
OCPDs
Bonding
Sizing
Disconnects and wire sizing
Chapter Twelve: Electrical
Troubleshooting
Symptoms, possible causes and
application to instrumentation
Circuits, complete, short, open and grounded
Troubleshooting
Effects of loose wire connections
Wiring diagrams used for troubleshooting
Use of meter/with electrical schematics
Shorts, open, grounds
Loose neutrals
Chapter Thirteen: Introduction
to Motors
Types of motors: squirrel
cage, induction, single phase, dual phase, three phase and
variable speed
Magnetism
Induced current
Electromagnetism
Motor torque
Starting relays
Starting switch
Starting, relays
Efficiency
Heat and temperature
Dimensions
Identifying motor start and run windings
Mechanical and installation considerations
Shafts
Lubrication and bearings
Noisy operation
Electrical connections
Operating limitations
Motor overload protections
Nameplate data
Year Two,
Second Semester
Chapter Fourteen: Cooling
Equipment
Types of units: RTU, split,
package, unitary, built-up, matched, ductless, chillers (air and
water cooled), cooling tower, chilled water, CW, water treatment
intro, pumping
Fluids
Closed vs open loop
Basic sizing
CFM/ton
Sensible vs. latent heat
Velocity over face of coil
Economizers
Outside air
Duct sizing - supply vs. return
Duct calculator
Chapter Fifteen: Mechanical
Troubleshooting
Troubleshooting:
refrigeration, A/C, furnace and air flow problems
Case studies of components/systems
Symptoms/problems/causes; refrigeration, cooling, heating, CSI
Chapter Sixteen: Advanced
Installation Techniques
Best practices
Piping: Dielectric unions and support
Duct sealing systems
Common code violations and solutions
Vibration and noise issues
Chapter Seventeen: Control
Systems
Types of thermostats
Built-in thermostat functions
Heating/cooling controls
Sequence of operation
Troubleshooting components
Pressure switches
Loss of charge
Chapter Eighteen:
Psychrometrics
Why learn psychrometrics?
Psychrometric chart terminology
Human comfort zone
Gas laws
Sling psychrometer
What do the lines on the psychrometric chart mean?
Using the psychrometric chart
Finding the properties of air
IAQ: mold and moisture issues
Moisture control: humidification and dehumidification, system,
room or whole house moisture control
Chapter Nineteen: Basic Sizing
Heat transfer theory
Steps in sizing equipment
Importance of heating and cooling load calculations
Relationships between load, equipment and duct
Location of ducts/proper installation/sealing
Why match condensers, evaporators and blowers?
.....
About the Author:
Joseph Moravek has a
Masters degree in Education. He is a member of the ICBO, ASHRAE and AFE
professional organizations.
Currently, Mr. Moravek is a HVAC instructor at Lee
College in Baytown, Texas.
464 Pages - 8-1/2 x 11in.
Copyright 2010
Related:
1418066648
/ 9781418066642
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