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DEWALT HVAC Professional Reference
( SKU 239 )
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DEWALT HVAC Professional Reference

This little book is an ideal pocket reference library for you if you work in the climate-control industry. It covers the design, installation, service, testing, balancing and troubleshooting for common HVAC applications such as compressors, temperature, fans, pressure, duct sizing, refrigeration, air velocities, heat transmission, thermostats and much more. It measures 4”6” and contains 384 pages. You can't beat the price.

Dan Holohan

P.S. Take a look at the Table of Contents:

Chapter 1
HVAC Formulas & Conversions
Air Flow
Air Changes
Fan Laws
Pulley Laws
Refrigeration Formulas
HVAC Conversions

Chapter 2
Ductwork & Ventilation
Converting Round Duct Areas to Square Feet
Duct Cross Joints
Duct Longitudinal Seams
Properties of Steel and Plate Iron
Fibrous Glass Duct Stretch-Out Areas
Weights of Nonferrous Sheet Duct Material
Weights of Sheet Metal Duct Material
Weights of Steel Sheet Duct Material
Weights of Nonferrous Sheet Duct Material
Weights of Galvanized Steel Bands
Volume of Air Required
Fresh Air Requirements
Air-Duct Sizing
Air Velocities
Conversion Data for Pressures
Recommended Gages for Duct Systems
Weights of Metal Angles, Equal Legs, Lb. per Lin. Ft.
Weights of Floor Plates, Skid Resistant, Raised Pattern
Weights of Round Hanger Rod, Threaded Ends
Weights of Aluminum, Steel and Copper Ductwork for Straight Runs

Chapter 3
Design & Installation
Chimney Connector and Vent Connector Clearance from Combustible Materials
Standard Clearance for Heat-Producing Appliances in Residential Installations
Standard Clearance for Heat-Producing Appliances in Commercial and Industrial Installations
Clearance (in Inches) with Specified Forms of Protection
Performance of Storage Water Heaters
Heat Value per Cord (Million BTU) of Wood with 12% Moisture Content
Heat Value per Cord (Million BTU) of Green Woods
Typical Firewoods
Weather Zones and the Size of Tank Required
BTU Content of Fuel Oil
Properties of LP Gas
Usage Estimates For Gas Water Heating per Month in USA
Usage Estimates For Electric Water Heating per Month in USA
Winter Design Temperatures for Major U.S. Cities
Ground Temperatures (U.S.) Below the Frost Line
Heat Gain Factors (Walls, Floor and Ceiling)
Average Air Changes per 24 Hr. for Storage Rooms
Due to Door Openings and Infiltration (Above 32°F)
Heat Removed In Cooling Air
Storage Room Conditions (BTU per cu. ft.)
Infiltration Rate Through Various Types of Windows
Infiltration Through Various Types of Wall Construction
Recommended Limit Control Settings
Common Terminal Identifications
Relay Position and Effect on Gas Burner
Twin-Type Thermostat
Millivolt Control
Suggested Duct Velocities for Low Velocity Systems
Design Pressures for Refrigerant Testing
Attic Vent Sizing Guide
Ventilation Requirements for Refrigeration
Machinery in Hot Areas
Specific Heat of Various Substances—Liquids
Specific Heat of Various Substances—Gases
Room-Cooling Requirements in BTU
Neuron Chip Simplified Block Diagram
Neuron Chip Block Diagram
Neuron Chip Pin Assignment
Neuron Chip Block Diagram
Neuron IC Family
Neuron IC Specifications
Lonworks Node Block Diagram

Chapter 4
Plan Symbols
Pipe Legends
Standard Abbreviations
Equipment Designations
Control Diagram Symbols
Steam Symbols
Fire Safety
Piping Specialities
Air Moving Devices and Components
Auxilliary Equipment
Energy Recovery Equipment
Power Recources
Miscellaneous Plan Symbols

Chapter 5
Electrical & Motors
Calculating Root-Mean-Square
Power Formulas—1ö, 3ö
Typical Power Wiring Color Code
Conduit Size vs. Wire Size
Tightening Torque in Pound-Feet-Screw Fit
Enclosure Types
Designing Motor Circuits
Tips on Selecting Motors
Facts to Consider
Types of Enclosures
Setting Branch Circuit Protective Devices
1ö Motors and Circuits
3ö 230 V Motors and Circuits—240 V System
3ö 460 V Motors and Circuits—480 V System
Motor Frame Dimensions
Coupling Selections
Typical Motor Power Factors
Common Service Factors
Motor Frame Dimensions
Motor Frame Letters

Chapter 6
Conversions Factors & Units Of Measure
Commonly Used Conversion Factors
Electrical Prefixes
Common Prefixes
Common Electrical Quantities
Conversion Table
Electrical Abbreviations
Commonly Used Geometrical Relationships

Chapter 7
Materials & Tools
Cable Clamps for Wire Rope
Pulleys and Gears
Standard “V” Belt Lengths
Wire and Sheet Metal Gauges
Wire Wrope Slings—Straight Leg
Manila Rope Slings—Straight Leg
Manila Rope Slings—Basket
Safe Load for Shackles
Sheet Metal Screw Characteristics
Whitworth Bolt & Torque Characteristics
Metric Bolt & Torque Characteristics
Bolt & Torque Characteristics
Metal-Working Lubricants
Temperature Conversions

Chapter 8
Trouble Shooting
Common Problem Spots
Troubleshooting Gas-Fired Furnaces
Troubleshooting Oil-Fired Furnaces
Troubleshooting Coal-Fired Furnaces
Troubleshooting Electric Furnaces
Troubleshooting Reversing Valve
Troubleshooting Boilers
Troubleshooting Air Conditioning
Troubleshooting Damper Motor
Troubleshooting Gas Burners
Troubleshooting Oil Burners
Troubleshooting Oil Burner Primary Control
Troubleshooting Thermocouples
Troubleshooting Fuel Pumps and Fuel Units
Troubleshooting Steam Systems
Troubleshooting Self-Contained Air-Conditioner

Chapter 9

Chapter 10
Industry Associations

Chapter 11
Toll Free Numbers For HVAC Manufacturers

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