American Standard UV05 manual Using the Keypad/Display, Menu Reference, Changing Set Points

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Getting Started

Using the Keypad/Display

Viewing Actual Indoor Air Temperature (IAT)

Normally, the effective set point temperature appears on the keypad/display. You also can use the keypad/display to view the indoor air temperature (IAT). See Figure 3.

Note – When the actual indoor air temperature (Effective Space Temp Output) equals the effective set point temperature (Effective Set Point Output), you there is no change to the keypad/display when you view space temperature.

Figure 3: Viewing indoor air temperature

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Effective

Enter

Actual space

Effective

set point

(5-sec)

temperature

set point

Changing Set Points

The keypad/display can be used to make a +/–5°F (+/–3°C) offset adjustment to the effective temperature set point. See Figure 4. Also see “Space Temperature Set Points” on page 26 to learn more about temperature set points.

Figure 4: Adjusting the set point offset

70

So

FUNC

00

 

 

 

Effective

Set point

Enter

Current

 

set point

offset

 

offset

 

-1

FUNC

-1

So

69

 

Adjusted

Save

Flash

 

Effective

offset

change

value

 

set point

Note – The set point offset clears whenever UVC power is cycled. When you change the set point offset after a power cycle, or for the very first time, this cleared value shows as the highest allowed value (5°F/3°C) but is not an actual offset value.

When using the +/–3°F (+/–1.7°C) remote wall sensor, any set point offset adjustment made at the keypad/display causes the UVC to override and ignore the remote wall sensor set point adjustment knob. To use the remote wall sensor set point adjustment knob after you changed the set point offset on the keypad/display, clear the keypad/ display set point offset by cycling UVC power.

When using the 55°F to 85°F remote wall sensor, the UVC ignores any LUI set point offset adjustments.

Menu Reference

The keypad/display menu eases troubleshooting and simplifies UVC configuration. The user can access the most common parameters and system status values without a PC or network interface.

The keypad/display menu is accessed via an unmarked, hidden key. This hidden key is located approximately behind the letter “h” in the MicroTech II logo on the keypad/display face.

The keypad/display menu consists of two levels. The first level is the keypad/display Menu Item List containing alphanumeric characters representing each parameter. The second level is where the parameter’s value is viewed and adjusted if the parameter is adjustable. After 15- seconds, an inactivity timer automatically causes the display to back out of the menu levels, returning to the effective set point display.

McQuay OM 751

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Contents DX Cooling Only Software Model UV05 Group Applied SystemsDate November Introduction UVC Configuration ParametersGetting Started Description of OperationModel-specific unit ventilator installation literature Accessory-specific installation literatureDescription Manual # Software program literature Extreme temperature can damage system componentsAcronyms/Abbreviations Acronyms and 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 StateEmergency Heat Mode Super State Full Heat State StateCant Heat State State D Auto Mode Heat Mode Super StateHeat State State Cool Mode Super State Low Limit State State ECant 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 optionalSet point calculation examples Example a Example B GivenEffective set point calculations Proportional Integral PI Control Loops Discharge Air Temperature ControlPI loop list PI loopsProportional Band PI Control ParametersIndoor Air Fan Operation Integral TimeOccupied, Standby, and Bypass Operation Outdoor Air Damper Operation Economizer enable EconomizerOA 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 Monitoring Alarm and fault code summaryPriority 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