Engineering Manual o.. - HVAC.Amickracing

GENERAL ENGINEERING DATAHumidifying Process 45Humidity. See Relative HumidityHumidity Controller 69Humidity Ratio 39Hunting 9Hybrid Heat Transfer Substations 364Hydronic SystemsCorrosive Elements 406Hysteresis 132II/O Summary 180In-Depth Integration 183Indicating DeviceElectronic 123Indirect Heat Transfer Substations 363Individual Room Control Automation 399Indoor air qualityAcceptance testing 152Air contaminants 143Codes and standards 151Concerns 143Control applications 153Design considerations 147Design procedures 149Indoor air contaminant indicators 147Indoor Air Quality Fundamentals 140Induction VAV ATU 378Infiltration 13Infrared heater 13Instantaneous Converter Control 354Integral Action 115IntegrationSystem 183In-Depth 183Surface 183Isothermal Process 39LLaboratory pressurization control 269Lag 30Latent Heat 39Legionnaires disease 141Length Conversion Multipliers 443Limit Control 83Limit Controller 108Limit Sensor 115Line Voltage 95Linear Valve 409Load 9, 29Load Analyzer Relay 77Load Reset 131Lockout Relay 76Low Pressure Steam Distribution Systems 347Low Voltage 95Low-Limit Controller 98, 99, 107Low-Pressure Selector Relay 77MMain Line 58Main Sensor 115Management-Level Processor 171, 174Manipulated variable 9, 18, 58Manual Minimum Positing of Outdoor Air Damper 109Manual Positioning Switch 82Manual Switch Control 84Materials safety data sheets 141Measured variable 9Metric Prefixes 442Microprocessor-based control 9Microprocessor-Based Controller 125, 126Microprocessor-Based Systems 114Microprocessor-Based/DDC Fundamentals 125Mixed Air 58Mixing Valve 410Modulating 9, 58Modulating ControlElectric 103Modulating Steam Coil Performance 349Sensing element 35Moisture Content 39Moisture Content Of Air Data 458Moisture In Compressed Air 458Momentary Fast-Slow-Off Start-Stop Circuit 112Momentary Start-Stop Circuit 111MotorContactors and Relays 110Control Circuits 110Control Combinations 113Starters 110Hand-Off-Auto 111Momentary Fast-Slow-Off 112Momentary Push-Button 111Motor Starter 122Multiple Decoupled Chiller Control 290Multizone Space-Heating HTW Water Converters 356NNatural Convection Units 384Negative (Reverse) Reset 115Night Cycle 130Night purge control 266Nozzle-Flapper Assembly 60OOff gassing 141Offset 9, 24, 25, 58, 115Oil Burners 306On/off control 9One-Pipe Steam Systems 347Open-Closed Control 101Operating Software 125, 129ENGINEERING MANUAL OF AUTOMATIC CONTROL 467