Table of Contents
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INDEX
T
Temperature
Dew-Point 38
Dry-Bulb 38
Wet-Bulb 39
Temperature Controller 71
Temperature Controllers
Electronic 128
Temperature Sensor
Electronic 122
Terminal Units
Control 365
Thermal Storage
Control 315
Control Modes 315
Thermistor 124
Thermocouple 125
Thermostat
Pneumatic 60
Dual Temperature 69
Dual-Acting 69
High Capacity, Single Temperature 69
Low-Capacity, Single Temperature 69
Three-way Valve 431, 436
Throttling Range 7, 22, 60, 121
Adjustment 64
Throttling VAV ATU 400
Time and Event Programs 142
Time constant 7
Time Proportioning 19, 102
Timed two-position control 18
Torque Conversion Multipliers 472
Total and static pressure sensors 278
Total Heat 39
Tower Free Cooling, Dual Chillers 325
Toxicity 153
Transducer 33
Electronic 121, 125, 128, 129
Electronic-to-Pneumatic 129
Transformer 99
Transmission 9
Transmitter
Electronic 121, 125, 127
Turndown 429
Twisted Copper Pair 188
Two-Pipe Steam Systems 370
Two-Position Control 7, 17, 105
Electric 107
Two-Pressure Reducing Valve 69
Two-Way Valve 431, 434
U
Unbalanced loading 295
Unit Heater 10, 409
Control 101, 410
Modulating 410
Two-Position 410
Down-Blow 410
Gas Fired 411
Oil Fired 411
Unit Ventilator 10, 411
ASHRAE Control Cycles 412
Control 412
Day/Night Setback 414
Digital 415
Draw-through 412
Unitary Equipment Control 408
Universal Controllers
Electronic 128
V
Valve 75
Ball 430, 433
Body rating 430
Butterfly 431, 433
Components 428
Diverting 436
Double-seated 431
Equal Percentage 435
Expansion 297
Globe 431, 433
Linear 434
Material and Media 431
Maximum
Pressure 430
Temperature 430
Mixing 436
Pilot-operated 431
Quick-Opening 434
Ratings 429
Reduced-Port 431
Selection 432
Single-seated 431
Sizing 437, 441
Steam
Sizing 441
Three-way 431
Two-way 431, 434
Types 430
Water
Sizing 437
Valve Control
Coil 348
ENGINEERING MANUAL OF AUTOMATIC CONTROL
494
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