Applications Guide Tracer Graphical Programming - Trane
Applications Guide Tracer Graphical Programming - Trane
Applications Guide Tracer Graphical Programming - Trane
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®<br />
Figures<br />
Chapter 8<br />
Constant-volume AHU with warm-up, pre-cool,<br />
andcommunications..................... 189<br />
Figure164:Constant-volumeairhandler .......................190<br />
Figure 165: Modified constant-volume AHU wiring diagram . . . . . . . 198<br />
Figure 166: Economize decision with communicated values . . . . . . . 201<br />
Figure 167: Decision incorporating pre-cool and warm-up modes. . . 202<br />
Figure 168: Outdoor air damper control . . . . . . . . . . ..............203<br />
Figure169:Completedmixedaircontrolprogram ...............203<br />
Figure170:Dehumidifyorhumidify? ..........................205<br />
Figure 171: Modulate or open the cooling valve? . . ..............207<br />
Figure 172: Controlling the cooling valve . . . . . . . . . ..............208<br />
Figure 173: Controlling the heating valve . . . . . . . . . ..............209<br />
Figure 174: Completed discharge air control program. . . . . . . . . . . . . 210<br />
Figure 175: Space temperature setpoint source determination . . . . . 213<br />
Figure176:Pre-coolandwarm-updecisions ....................215<br />
Figure 177: Completed modes and setpoints program . . . . . . . . . . . . 215<br />
Figure178:Communicationsprogramproperties................219<br />
Figure179:Transmittingtemperatures.........................219<br />
Figure180:Transmittingtheeffectivesetpoint...................220<br />
Figure181:Transmittingeffectiveoccupancy....................220<br />
Figure182:IndicatingmodewithinnvoUnitStatus ...............222<br />
Figure183:Remainingunitstatusitems........................222<br />
Figure184:Completedcommunicationsprogram................223<br />
<strong>Programming</strong> best practices. ............... 227<br />
Figure185:Programproperties...............................228<br />
Figure186:Inputsontheleft,outputsontheright ...............229<br />
Figure 187: Checking the space temperature input for failure. . . . . . . 230<br />
Figure 188: Using wireless connections . . . . . . . . . . ..............231<br />
Summary-question answers. ............... 235<br />
Figure 189: Equip Room Exhaust Fan program with a modification . 236<br />
Figure190:FeedbackAlarmblocksubstitution...................236<br />
Figure 191: Automatically resetting the alarm reset<br />
without a Switch block . . . . . . . . . . ...........................237<br />
Figure 192: Using outdoor air enthalpy. . . . . . . . . . . ..............238<br />
Figure193:FanMaintenancecalculationsetup..................238<br />
Figure194:Maintenancetimerindicationandreset ..............239<br />
Figure195:Addingasetpointsourceoption ....................239<br />
Figure196:Effectivesetpointcalculation.......................240<br />
Figure197:Scheduleapplicationoccupancyinputs...............241<br />
xviii<br />
CNT-APG001-EN
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