American Standard UV05 manual External Binary Inputs, Unoccupied Input Signal

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Description of Operation

External Binary Inputs

The UVC is provided with three binary inputs that provide the functions described below.

Figure 24: Binary inputs

Binary Inputs

3 sets of dry contacts to signal UVC

Input 1: Unoccupied (default)

Input 2: Remote shutdown

Input 3: Ventilation lockout (default) or

Exhaust interlock system

These inputs each allow a single set of dry contacts to be used as a signal to the UVC. Multiple units can be connected to a single set of dry contacts. For wiring examples, see MicroTech II Unit Ventilator Controller IM 747.

Note – Not all of the functions listed can be used at the same time. The UVC is provided with configuration parameters that can be adjusted to select which function is used for these inputs where multiple functions are indicated below.

External Binary Input 1

This input can be configured as an unoccupied (default) or dew point/humidity signal.

Unoccupied Input Signal

This input allows a single set of dry contacts to be used to signal the UVC to go into unoccupied or occupied mode. When the contacts close, the UVC goes into unoccupied mode. When the contacts open, the UVC goes into occupied mode. Additional variables can effect occupancy mode and override this binary input. See “Occupancy Modes” on page 24.

External Binary Input 2

This input can only be used for remote shutdown.

Remote Shutdown Input Signal

This input allows a single set of dry contacts to be used to signal the UVC to go into shutdown mode. When the contacts close (shutdown), the UVC goes into shutdown mode. When the contacts open. the UVC returns to normal operation. See “Special Purpose Unit Modes” on page 21.

External Binary Input 3

This input can be configured as a ventilation lockout (default) or exhaust interlock signal.

Ventilation Lockout Input Signal

This input allows a single set of dry contacts to be used to signal the UVC to close the OA damper. When the contacts close (ventilation lockout signal), the UVC closes the OA damper. When the contacts open, the UVC returns to normal OA damper operation.

McQuay OM 751

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Contents Group Applied Systems DX Cooling Only Software Model UV05Date November Introduction UVC Configuration ParametersGetting Started Description of OperationAccessory-specific installation literature Model-specific unit ventilator installation literatureDescription Manual # Software program literature Extreme temperature can damage system componentsAcronyms and abbreviations Acronyms/AbbreviationsDescription Acronym Abr OCS Display Format Using the Keypad/DisplayKeypad Functions Security LevelsON/STOP Key and LED Mode KeyFAN Key Arrow KeysViewing Actual Indoor Air Temperature IAT Using the Keypad/DisplayMenu Reference Changing Set PointsRW1 Abr Description DefaultChlo State Programming Description of OperationUVC Unit Modes Complete UVC-state diagramUVC state names and numbers OFF Mode StateNormal UVC modes State names DecimalFan Only Mode State a Night Purge Mode StateFull Heat State State Emergency Heat Mode Super StateCant Heat State State D Heat Mode Super State Auto ModeHeat State State Low Limit State State E Cool Mode Super StateCant Heat State State B Econ State State Cool mode super state diagramMech State State Econ Mech State StateDischarge Air DA Heat State State Special Purpose Unit ModesLow Limit State State F Cant Cool State State CDepressurize Mode Pressurize ModePurge Mode Shutdown ModeSpecial purpose UVC unit mode priority Unit Mode PriorityNormal UVC mode priority Priority resultUnoccupied Mode Occupied ModeStandby Mode Occupancy mode priorityAdditional Occupancy Features Networked Space Temperature Sensor Capability Space Temperature Set PointsNetworked Set Point Capability Networked Set Point Offset CapabilityEffective Set Point Calculations Remote Wall-Mounted Sensor with +/-3F Adjustment optionalExample a Example B Given Set point calculation examplesEffective set point calculations Proportional Integral PI Control Loops Discharge Air Temperature ControlPI loop list PI loopsProportional Band PI Control ParametersIntegral Time Indoor Air Fan OperationOccupied, Standby, and Bypass Operation Outdoor Air Damper Operation Economizer Economizer enableOA temp sensor Space humidity Networked Outdoor Humidity Sensor Capability Networked Space Humidity Sensor CapabilityCO2 Demand Controlled Ventilation optional Networked Space CO2 Sensor CapabilityAshrae Cycle Compressor OperationCompressor Envelope Compressor Cooling LockoutCompressor Start Delay Compressor Minimum On and Off TimersFloating-Point Actuator Auto-Zero, Overdrive and Sync Outdoor Air Fan OperationRemote Shutdown Input Signal Unoccupied Input SignalVentilation Lockout Input Signal External Binary InputsLights On/Off Signal Exhaust Interlock Input SignalFault Signal External Binary OutputsAuxiliary Heat Signal Exhaust Fan ON/OFF SignalAuxiliary heat start/stop calculation Start/Stop CalculationExpansion board Inputs and outputs, software model 05-DX cooling onlyAlarm and fault code summary Alarm and Fault MonitoringPriority Fault description Reset Keypad Compressor Envelope Fault F2 DX Pressure Fault F1Space Temp Sensor Failure F0 Discharge Air DX Cooling Low Limit Indication F3Space Coil DX Temp Sensor Failure F5 Condensate Overflow Indication optional F4Outdoor Temp Sensor Failure F6 Discharge Air Temp Sensor Failure F7Troubleshooting Temperature Sensors Temperature versus resistance Troubleshooting Humidity SensorsHumidity versus voltage Troubleshooting Carbon Dioxide CO2 SensorsCO2 versus voltage table RH % VDC mVConfiguration Parameter Name Abr Default LUI Menu UVC configuration parameters OMAbr Default LUI Menu OAD Stroke Time Warranty