<?xml version="1.0"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="0b159180d21311e1800000215ad4efdf" templatetype="PSET_PERFORMANCEDRIVEN" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4" />
  <Name>Pset_UnitaryControlElementPHistory</Name>
  <Definition>Properties for history and operating schedules of thermostats.  HISTORY: Added in IFC4.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcUnitaryControlElement</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcUnitaryControlElement</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="1072dc00d21311e1800000215ad4efdf">
      <Name>Temperature</Name>
      <Definition>Indicates the current measured temperature.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Temperature</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="136dcc80d21311e1800000215ad4efdf">
      <Name>Mode</Name>
      <Definition>Indicates operation mode corresponding to Pset_UnitaryControlTypeCommon.Mode.  For example, 'HEAT', 'COOL', 'AUTO'.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Mode</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="17015380d21311e1800000215ad4efdf">
      <Name>Fan</Name>
      <Definition>Indicates fan operation where True is on, False is off, and Unknown is automatic.</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Fan</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="1a94da80d21311e1800000215ad4efdf">
      <Name>SetPoint</Name>
      <Definition>Indicates the temperature setpoint.  For thermostats with setbacks or separate high and low setpoints, then the time series may contain a pair of values at each entry where the first value is the heating setpoint (low) and the second value is the cooling setpoint (high).</Definition>
      <PropertyType>
        <TypePropertyReferenceValue reftype="IfcTimeSeries" />
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Set Point</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases>
    <PsetDefinitionAlias lang="en" />
  </PsetDefinitionAliases>
</PropertySetDef>