Engineering Manual o.. - HVAC.Amickracing

GENERAL ENGINEERING DATAOperationSeries 40 97Series 60 Floating 102Series 60 Two-Position 100Series 80 98Series 90 104Operations-LevelFunctions 176Processor 172, 174Operator interface 156Optimum Start 130Optimum Stop 130Output Control 122Output Devices 122PParallel Fan ATU 380Peer Communications Protocol 175Phone Lines 175PI 10PI control 26PID 10PID control 28Pilot Bleed System 60Pilot-operated valve 405Piping ArrangementsHot Water 336Piping SystemsCoupled Vs Decoupled 324Direct Vs Reverse Return 323Pitot tube sensors 258PneumaticCentralization 87Control CombinationsChangeover Control 85Electric-Pneumatic Relay Control 85Limit Control 83Manual Switch Control 84Pneumatic Recycling Control 86Pneumatic-Electric Relay Control 86Reset Control 85Sequence Control 83Control System 59, 88Controller 70Potentiometer 79Recycling Control 86Sensor 71Switch 81Pneumatic control 9Pneumatic-Electric Relay 80, 86Positive (Direct) Reset 115Positive displacement compressor 272Positive-Positioning Relay 78Power SupplyElectronic 123Preheat control processes 211Sensing elements 34Pressure Controller 69Pressure Conversion Multipliers 442Pressure drop 404Critical 404Pressure IndependentConstant Volume ATUDual Duct 383VAV ATUDual Duct 382Pressure Reducing StationsDistrict Heating 361Pressure Reducing Valve Station 66, 346Pressure Reducing Valves 67Pressure SensorElectronic 121Pressure sensors 258Pressure-Dependent ATU 375Pressure-Independent ATU 375Primary Network 359Process 9ProcessorManagement-Level 171, 174Operations-Level 172, 174ProgrammingConfiguration 135Custom Control 135Data File 135System Initialization 135Sensing element 36Properties Of Saturated Steam Data 455Proportional Band 9, 25, 58, 115Proportional Control 9, 24, 115Proportional-Integral 115Proportional-integral (PI) control 10, 26Proportional-Integral Controller 70Proportional-integral-derivative (PID) control 10, 28Propylene Glycol Solutions 412Psi to kPa Conversion 442Psychrometric AspectsAir Conditioning Process 44Air Washer 50Cooling and Dehumidification 52Air Washer 52Cooling Process 45Dehumidification and Reheat 53Heating Process 44Humidifying Process 45Mixed Air 43Steam Jet Humidifier 47Vaporizing Humidifier 51Psychrometric Chart 40ASHRAE 54Psychrometric Processes 41Pulse Width Modulation 122PumpAffinity Laws 316Efficiency 315Performance 314Performance Curves 315Power Requirements 315ENGINEERING MANUAL OF AUTOMATIC CONTROL 468