With this handy portable guidealong on every job, you’ll knowinstantly how to…
✧ Troubleshoot HVAC problemscorrectly and efficiently
✧ Get calculations right every timewith valuable look-up tables
✧ Follow succinct, step-by-stepprocedures for working with ducts…water, steam, and pipes…electricityand wiring…pumps and valves…sensors, actuators and controllers…water and steam distributionsystems…chillers…boilers — andmuch more
✧ Benefit from hundreds of savvymoney-saving techniques and tips
✧ Ensure the safety of facilitiespersonnel and building residents
✧ Avoid damage to expensiveequipment and systems
✧ MORE!EXTRABONUS:
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Details Inside…
Chapter 1. Introduction and Overview✧How Buildings Work
Chapter 2. Air and Ducts✧Air ✧Psychrometrics ✧Ducts ✧AirCompressors
Chapter 3. Water, Steam, and Pipes✧Water ✧Steam ✧Pipes and Tubing ✧Ironand Steel Pipes ✧Copper Tubing ✧PlasticPiping ✧Support and Insulation ✧HeatExchangers ✧Performance of HeatExchangers
Chapter 4. Electricity and Wiring✧DC Circuits ✧AC Circuits ✧Wye and DeltaCircuits ✧Variable Speed Drives✧Transformers ✧Circuit Breakers and Fuses✧Electric Switches ✧Wires ✧PowerMeasurement and Electric Rates✧Consumption ✧Demand ✧Cost Adjustmentsand Other Charges
Chapter 5. Measurement and Control✧Temperature Sensors ✧PneumaticTemperature Sensors ✧Electric TemperatureSensors ✧Humidity Sensors ✧Air FlowSensors ✧Water Flow Sensors ✧PressureSensors ✧Power Sensors ✧PneumaticActuators and Controllers ✧ElectronicActuators and Controllers ✧Sensor NoiseRejection and Shielding ✧Control Loops
Chapter 6. Pumps and Valves✧Theory of Operation ✧Centrifugal Pumps✧Pump and System Curves ✧PositiveDisplacement Pumps ✧Valves ✧Valve Types✧Controls ✧Safety ✧Deadheading✧Cavitation ✧Personnel Safety ✧ValveDisassembly and Repacking ✧Troubleshooting✧Electric Pump ✧Practical Considerations✧Pump Bearings ✧Pump Seals ✧PumpMotors ✧Control Valves ✧Glycols
Chapter 7. Water Distribution Systems✧Theory of Operation ✧Two and Four PipeSystems ✧Parallel, Series, and Variable-Speed Pumping ✧Control ✧Primary/Secondary Loop ✧Secondary/Tertiary Loop✧Differential Pressure Control ✧StaticPressure Control ✧Safety ✧Troubleshooting
✧Low Flow in System ✧Water TemperatureNot at Setpoint ✧Control Valves Not Workingor Too Noisy ✧Reheat Coils Not Working✧Practical Considerations ✧Piping ✧Pumpsand Valves ✧Water Treatment
Chapter 8. Chillers✧Theory of Operation ✧Vapor CompressionCycle ✧Compressors ✧Other ChillerComponents ✧Direct Expansion ✧AbsorptionCycle ✧Controls ✧Chiller Safeties and FlowInterlocks ✧DX Control ✧Current Limiting✧Safety ✧Troubleshooting ✧PracticalConsiderations ✧Staging Multiple Chillers✧DX Units ✧Noisy Compressors ✧Keep ItClean ✧Keep It Under Control
Chapter 9. Air-Cooled Condensers andCooling Towers✧Theory of Operation ✧Controls ✧Air-CooledCondenser Fan Staging ✧Cooling TowerCapacity Control ✧Heat Recovery ✧Safety✧Troubleshooting ✧Cooling Towers ✧PracticalConsiderations ✧Maintenance ✧Free Cooling✧Controls
Chapter 10. Thermal Energy StorageSystems✧Theory of Operation ✧Cooling Storage✧Heating Storage, Control ✧Cooling Storage✧Safety, Troubleshooting ✧PracticalConsiderations
Chapter 11. Boilers✧Theory of Operation ✧Boiler Rating ✧Ignition✧Controls ✧Boiler Safety ✧Hot Water Reset✧Safety ✧Boiler Controllers ✧Troubleshooting✧Practical Considerations ✧Water Treatment
Chapter 12. Steam Distribution Systems✧Theory of Operation ✧Steam Piping andValves ✧Steam Traps ✧Steam-to-Air HeatExchangers ✧Steam-to-Water Heat Exchangers✧Condensate Return Systems ✧Control✧Steam-to-Air Coils ✧Steam-to-Water Coils✧Humidification ✧Safety ✧Steam Valves andTraps ✧Troubleshooting ✧TroubleshootingSteam Baseboard Heaters ✧PracticalConsiderations
Chapter 13. Fans and Dampers✧Theory of Operation ✧Fans ✧Dampers✧Fire Dampers ✧Face and Bypass Dampers✧Control ✧Safety ✧Troubleshooting ✧Fan
Doesn’t Start or Has Low Flow ✧DamperDoes Not Operate ✧Practical Considerations✧Measuring Air Flow ✧Energy Conservation
Chapter 14. Air-Handling Units✧Theory of Operation ✧Filters ✧Dampers✧Coils ✧Humidifiers and Dehumidifiers✧Controls ✧Damper Control ✧Temperature✧Safety ✧Troubleshooting ✧Mixed AirTemperature (Too Hot or Too Cold) ✧AHUSupply Air Temperature is Not at Setpoint orVaries Too Much ✧Airflow Too Low/FanDoesn’t Start ✧Practical Considerations✧Installation Considerations ✧BearingLubrication ✧Freeze Protection
Chapter 15. Air Distribution Systems✧Theory of Operation ✧Return Fans, ExhaustFans, and Relief Fans ✧Run-Around Loops✧Humidification and Dehumidification✧Controls ✧Duct Pressure Control ✧BuildingWarm-Up/Cool-Down ✧Economizer and NightPurging ✧CAV and VAV System Control✧Safety ✧Troubleshooting ✧Supply Air FlowRate/Static Pressure Too Low ✧Supply AirFlow Rate/Static Pressure Too High ✧SupplyAir Too Cold or Too Hot ✧Supply Air is TooHumid or Too Dry ✧Too Much Noise fromSupply Air Duct ✧Practical Considerations
Chapter 16. Zone Terminal Systems✧Theory of Operation ✧Single Duct VAVBoxes ✧Double-Duct Boxes ✧Induction Boxes✧Diffusers ✧Fan-Coil Units and RadiantHeating ✧Thermostats ✧Control ✧Safety✧Troubleshooting ✧Zone Too Hot ✧Zone TooCold ✧Practical Considerations ✧ZonePressurization
Chapter 17. Evaporative Cooling✧Theory of Operation ✧Controls ✧Safety✧Troubleshooting ✧Practical Considerations✧Chemical Treatment and Dirt Build-up
Chapter 18. Residential Systems✧Theory of Operation ✧Heat Pumps✧Controls ✧Safety ✧Troubleshooting✧Furnace Cycles Too Much ✧Space is TooHot or Too Cold ✧Furnace is Too Noisy✧Practical Considerations
Appendix A. Tools for the TechnicianAppendix B. Using MultimetersIndex
Your toughest HVAC questions…ANSWERED IN SECONDS!
HVAC INSTANT ANSWERS –The indispensable on-the-job problem-solver that covers it all!
Order online @ books.mcgraw-hill.comEnter Special Reference Code AKCI208Z(Shipping & Handling are FREE with your online order)
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Your toughest HVAC questions…ANSWERED IN SECONDS!
✧ Handy portable size (5” x 8”) – for on-the-jobanswers where and when you need them
✧ Formatted to help you quickly find what youneed by category
✧ Tried-and-tested step-by-step instructions
✧ Special boxed material in each section, calledfastfacts, alert you to critical details
✧ Hundreds of crystal-clear photos, illustrations,and always-right calculation tables and checklists
ISBN 007138701-3
HVACinstantanswersHVACinstantanswers
Packed with schematic diagrams, system layouts, flowcharts, and graphics, HVAC Instant Answersis a reliable, convenient, “answers-at-your-fingertips” resource. If you’re just entering the field, it’s agreat learning tool that will quickly and smoothly ease you into on-the-job skill and confidence.
If you’re an experienced HVAC professional, you’ll find it indispensable for its wealth of immediatelyaccessible tables, tips and techniques. This is the place to look for crystal-clear descriptions of com-mon symptoms and problems – and the quickest and best solutions possible.
✧ Understand the mechanics of ductwork
✧ Use the psychrometric charts to design and troubleshootHVAC systems that heat, cool, or humidify the air
✧ Become familiar with all functioning parts of HVACsystems with break-away views, like this one of atypical valve p. 129
✧ Know how to properly mount and support plastic pipingto account for its expansion due to temperature change
✧ Find a simple way to determine how much energy istransferred across air-to-air coils or air-to-water coils
✧ Avoid creating a fire hazard in a residential HVACsystem with the cable tip on p. 70
✧ Identify a problem with HVAC equipment by trackingits electrical efficiency
✧ Design and debug control systems p. 111
✧ Follow safety guidelines to eliminate costly consequences,from expensive equipment repair or replacement tocatastrophic injuries to facilities personnel
✧ Test if a valve is piped backwards (often the causeof water hammer). Directions on p. 195
✧ Recognize features common to the operation of all chillers– knowledge that can eliminate troubleshootingheadaches. See discussion beginning on p. 223
✧ Save a tremendous amount of energy and reduce thewear and tear on the chiller compressor by divertingcooling water to the secondary water distributionsystem p. 244
✧ Find an extensive troubleshooting flowchart for hotwater boilers (it’s on pp. 288-295)
✧ Install steam pressure gauges at several point along thesteam lines – a cheap way to prevent you from making abig, expensive mistake
✧ Ensure your personal safety with lock out/tag outprocedures when working with steam
✧ Get unresponsive damper motors, which fail moreoften than fan motors, working again
✧ Explore practical installation considerations that ensurelong life and proper operation of an air-handling unit
✧ Pick from among several workable strategies tosuppress noise from supply air ducts
✧ Troubleshoot swamp coolers
✧ Follow a few simple rules to ensure safe, properoperation and good readings from a multimeter
Find the HVAC information you need Find the HVAC information you need
HVAC INSTANT ANSWERS TELLS YOU EXACTLY WHAT STEPS TO TAKEWHEN PROBLEMS OCCUR WITH:
• Air distribution systems• Central cooling plants• Compressors• Condensers and cooling towers• Converters• Fans and pumps
• Rooftop units• Water and steam distribution systems• Thermal energy storage systems• Valves and dampers• Water loops• Zones
You get handy lists of tools, specification charts — andjust about everything else you need to get any HVAC jobdone quickly and correctly
Fastfacts in everychapter tell youwhat to do…what to avoid…best bets…bad moves
This “how-to” powerhouseis loaded with schematics.Here’s a Wheatstone bridgecircuit, often used in HVACsensors
Much, much more! SeeBack…
INAFLASH!INAFLASH!
