Carrier VVT 33ZC Installation, Start-up And Configuration Instructions

Contents

16Alarm Routing Control — This decision indicates whichCarrier system software or devices will receive and processalarms sent by the zone controller. This decision consists ofeight digits each can be set to zero or one. A setting of 1 indi-cates alarms should be sent to this device. A setting of zerodisables alarm processing for that device. Currently thecorresponding digits are configured for the following devices:first digit - user interface software; second digit - autodialgateway or Telink; fourth digit - alarm printer interfacemodule/DataLINK/BAClink/Carrier Translator; digits 3, and 5through 8 - unused.Alarm RoutingControl: Range 00000000 to 11111111Default Value 00000000Re-Alarm Time — This decision is used to configure the num-ber of minutes the zone controller will wait before an alarmcondition which has not been corrected will be re-transmittedon the communications network. Re-alarming of an alarm con-dition will continue until the condition no longer exists.Alarm Re-AlarmTime: Units MinutesRange 0 to 1440Default Value 0 (Disabled)BYPASS CONTROLLER CONFIGURATION (BP_SERV)TABLE — The bypass controller configuration table containsdecisions used to configure the damper modulation and theLAT (leaving air temperature) protection decisions. The bypasscontroller can also be configured as a broadcast acknowledger.See Table 10.Damper Control Deadband — This decision is used to config-ure a deadband for bypass damper position control. This algo-rithm operates based on the pressure sensor input to achieve thedesired set point. In the algorithm, an error signal is defined asthe difference between the system pressure set point and thepressure sensor input. The deadband is multiplied by a fixedvalue of 0.05 to adjust the reaction of the damper algorithm.The size of the deadband will correspond to the gain of theloop. The smaller the deadband, the higher the gain and thefaster the loop will react. The larger the deadband, the lowerthe gain and the slower the loop will react.NOTE: If the Damper Control Deadband value is set too low,excessive actuator movement and wear may occur.Damper ControlDeadband: Range 2 to 10Default Value 5CW Rotation — This decision is used to configure the rotationof the bypass damper. If the decision is set to close, the bypasscontroller modulates the damper counterclockwise to the openposition. If the decision is set to open, the bypass controllermodulates the damper clockwise to the open position.CW Rotation: Range Open/CloseDefault Value CloseMax Damper Alarm Limit — This decision is used to gener-ate alarms during system heating and cooling modes. When thebypass damper position is greater than this configured limit andthe duct temperature meets required conditions, an alarm willbe generated.During the heating mode if the duct temperature is greaterthan the Heating LAT Limit plus 10° F for more than 2 minutesthen a Low Heating Airflow Pressure Alarm will be generated.During the cooling mode if the duct temperature islower than the Cooling LAT Limit minus 2° F for more than2 minutes then a Low Cooling Airflow Pressure Alarm will begenerated.The damper position configured in this decision is also usedwhen the associated master zone controller has not determinedits system mode and the system fan is deenergized.Max DamperAlarm Limit: Range 20 to 99%Default Value 99%LAT Pressure Delta — This decision is used to configure theamount by which the System Pressure Setpt will be increased ifthe duct temperature goes above the Heat LAT Limit or belowthe Cool LAT Limit. This will cause the amount of bypassedair to be reduced, protecting the air source from receiving airthat is too hot or too cool.LAT PressureDelta: Display Units in. wgDefault Value 0.0Display Range 0.0 to 1.0Heat LAT Limit — This decision is used to configure the heat-ing limit used to provide LAT protection to control the systemairflow based on the duct temperature. If the duct temperaturegoes above this limit, the System Pressure Setpt will be in-creased by the amount configured in LAT Pressure Delta.Heat LATLimit: Display Units FDefault Value 120.0Display Range 80.0 to 120.0Cool LAT Limit — This decision is used to configure thecooling limit used to provide LAT protection to control the sys-tem airflow based on the duct temperature. If the duct tempera-ture goes below this limit, the System Pressure Setpt will be in-creased by the amount configured in LAT Pressure Delta.Cool LATLimit: Display Units FDefault Value 50.0Display Range 35.0 to 70.0Broadcast Acknowledger — This decision is used if thebypass controller will be used to acknowledge broadcastmessages on the Carrier Proprietary Network bus. One broad-cast acknowledger is required per bus, including secondarybusses created by the use of a bridge.BroadcastAcknowledger: Range No/YesDefault Value NoTable 10 — Bypass Controller ConfigurationDESCRIPTION VALUE UNITS NAMEDamper ModulationDamp Control Deadband 5 DEADBANDCW Rotation Close DMP_DIRMax Damper Alarm Limit 99 %OPEN DMP_LMTLAT ProtectionLAT Pressure Delta 0.0 in H2O DELTA_SPHeat LAT Limit 120.0 dF LAT_HLIMCool LAT Limit 50.0 dF LAT_LLIMBroadcast Acknowledger No BCST_ACK