TEC Zoning Control System for Stand-Alone and BACnet® MS/TP ...

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Table 2: TEC2647Z-2 and TEC2647Z-2+PIR Zone Controller InstallerConfiguration Menu (Part 6 of 7)ParameterAppearingon DisplayDescription and Default Selection OptionsTOccTimeCal RSDeadbandHeat maxCool minMin PosMax PosMaxHTPos 6PIHT Wei 7Sets the duration of the TemporaryOccupancy Time when the heatingor cooling setpoints in the Occupiedmode are established by:• an Override Function enabled inthe Main User Menu (when thezone controller is in theUnoccupied mode)• a temporary heating or coolingsetpointDefault: 2.0 hrsSets the desired room airtemperature sensor calibration(offset). The offset can be added toor subtracted from the actualdisplayed room temperature.Default: 0.0F°/0.0C°Sets the minimum deadbandbetween heating and coolingsetpoints.Default: 2.0F°/1.0C°Sets the Occupied, Standby, andUnoccupied maximum Heatingsetpoint values.Default: 90.0°F/32.0°CSets the Occupied, Standby, andUnoccupied minimum Coolingsetpoint values.Default: 54.0°F/12.0°CSets the minimum position of thezone damper.Default: 10%Sets the maximum position of thezone damper.Default: 100%Sets the minimum heating positionof the zone damper to maximize hotairflow on a call for reheat with coldsupply air.Default: 30%Sets the weight of the PI heatingdemand of a zone, used in thePI heating calculation of the zonecontroller.Default: 100%Range: 0.0 to 12.0 hrsNote: When adjusting the TOccTime, press the UP/DOWN arrowkeys to change the time in 1-hour increments; press and holdthe UP/DOWN arrow keys to change the time in 10-hourincrements.Range: -5.0F°/-2.5C° to 5.0F°/2.5C° adjustable in 1.0F°/0.5C°incrementsRange: 2.0F°/1.0C° to 5.0F°/2.5C° adjustable in 1.0F°/0.5C°incrementsRange: 40.0°F/4.5°C to90.0°F/32.0°CRange: 54.0°F/12.0°C to100.0°F/37.5°CRange: 0 to 100%Range: 0 to 100%Range: 0 to 100%Note: When adjusting thetemperature, press theUP/DOWN arrow keys tochange the temperature in0.5F°/0.5C° increments;press and hold theUP/DOWN arrow keys tochange the temperature in5.0F°/5.0C° increments.Note: When adjusting the damperposition, press theUP/DOWN arrow keys tochange the position in 1%increments; press and holdthe UP/DOWN arrow keys tochange the position in 10%increments.(0%): PI Heating Weight of 0%(25%): PI Heating Weight of 25%(50%): PI Heating Weight of 50%(75%): PI Heating Weight of 75%(100%): PI Heating Weight of 100%Note: A zone that includes a special application (such as a serverroom, mechanical room, or cafeteria) may affect the averageheating demand at the rooftop controller level, resulting indiscomfort in other zones. Setting the PI heating weight to0% eliminates this problem.20TEC Zoning Control System for Stand-Alone and BACnet® MS/TP Networked ApplicationsTechnical Bulletin
Table 2: TEC2647Z-2 and TEC2647Z-2+PIR Zone Controller InstallerConfiguration Menu (Part 7 of 7)ParameterAppearingon DisplayPICL Wei 7Description and DefaultSets the weight of the PI coolingdemand of a zone, used in thePI cooling calculation of the zonecontroller.Default: 100%Selection Options(0%): PI Cooling Weight of 0%(25%): PI Cooling Weight of 25%(50%): PI Cooling Weight of 50%(75%): PI Cooling Weight of 75%(100%): PI Cooling Weight of 100%Note: A zone that includes a special application (such as a serverroom, mechanical room, or cafeteria) may affect the averagecooling demand at the rooftop controller level, resulting indiscomfort in other zones. Setting the PI cooling weight to0% eliminates this problem.1. Zone MAC is the unique device address of the zone controller (from 004 to 127) on the MS/TP network.2. RTC MAC is the unique device address of the rooftop controller (from 004 to 127) on the MS/TP network.3. The standby setpoints are used in the standby mode. The PIR Func parameter must be set to on, or the BI1 parametermust be set to either MotionNO or MotionNC to enable the standby mode.4. The settings for this parameter are valid only if the analog reheat sequences are enabled.5. The settings for this parameter can only be enabled if an outside air temperature sensor is connected and ready foroperation.6. The MaxHTPos value should never be lower than the Min Pos value; likewise, the MaxHTPos value should never behigher than the Max Pos value.7. The setting for this parameter does not change the PI demand used locally at the zone controller to maintain the setpoint;instead, it only adjusts the PI demand transferred to the rooftop controller for its highest/average demand calculations.TEC2647Z-2 and TEC2647Z-2+PIR Zone Controller Operation andStrategyThe zone controller is designed to control a proportional 0 to 10 VDC modulatingdamper actuator, unlike low-end commercial and residential zoning thermostatsthat are designed to control two-position (open/closed) damper actuators.Proportional modulating control enables performance and control sequences thatare much closer to what is normally found in Direct Digital Control (DDC),application-specific control devices. Proper operation of the zone controllersrequires proper communication between the rooftop controller and its associatedzone controllers.The data exchange from the zone controllers to the associated rooftop controllerincludes:• current Proportional plus Integral (PI) heating demand, whereby the outputvalue is based on the PI heating weight configuration• current PI cooling demand, whereby the output value is based on the PI coolingweight configurationThe data exchange from the rooftop controller to the associated zone controllersincludes:• current central system occupancy• current system mode active (hot or cold air being delivered)• outside air temperatureTEC Zoning Control System for Stand-Alone and BACnet® MS/TP Networked ApplicationsTechnical Bulletin21
Page 1 and 2: TEC Zoning Control System for Stand
Page 3 and 4: Sequence of Manual Status Display S
Page 5 and 6: TEC Zoning Control System for Stand
Page 7 and 8: Figure 1 illustrates a typical TEC
Page 9 and 10: Example: A typical installation may
Page 11 and 12: Bypass Damper Design RulesA bypass
Page 13 and 14: The zone controller automatically s
Page 15 and 16: Main User MenuUse the Main User Men
Page 17 and 18: Table 2: TEC2647Z-2 and TEC2647Z-2+
Page 19: Table 2: TEC2647Z-2 and TEC2647Z-2+
Page 23 and 24: Table 3: System Mode Calculation wi
Page 25 and 26: Table 6: Lockout Level Function Det
Page 27 and 28: - It is possible for an internal zo
Page 29 and 30: Table 9: Maximum Heat Flow Adjustme
Page 31 and 32: Note that 0 to 100% is directly con
Page 33 and 34: Table 12: TEC2664Z-2 Rooftop Contro
Page 37 and 38: The rooftop controller calculates t
Page 39 and 40: Rooftop Controller Heating and Cool
Page 41 and 42: Typically, the number of rooftop co
Page 43 and 44: PIR Occupancy Sensor LogicThe PIR o
Page 45 and 46: AO2HeatingSetpointCoolingSetpointAO
Page 47 and 48: HeatingSetpointCoolingSetpointB05AO
Page 49 and 50: The system mode can be set to eithe
Page 51 and 52: 1. The outdoor temperature displays
Page 53 and 54: FIG:byps_dmprSequence of OperationF
Page 55 and 56: • Properly set the Min Pos, Max P
Page 57 and 58: Table 19: Rooftop Controller Commis
Page 59 and 60: Table 22: Zone Controller Number (
Page 61 and 62: Table 23: TEC2647Z-2 and TEC2647Z-2
Page 65: Table 24: TEC2664Z-2 Rooftop Contro
Page 69 and 70: • Ground the circuit if required.
Page 71 and 72:
Table 25: Troubleshooting Details 1
Page 73 and 74:
Table 25: Troubleshooting Details 1
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