7.5.3.61 IfcUnitaryEquipment

Equipement unitaire
Einbaufertige Anlage

Unitary equipment typically combine a number of components into a single product, such as air handlers, pre-packaged rooftop air-conditioning units, and split systems.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 583.
Type
IfcUnitaryEquipmentType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 583 — IfcUnitaryEquipment Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 584.
PredefinedTypeName
AIRCONDITIONINGUNITPset_UnitaryEquipmentTypeAirConditioningUnit
AIRHANDLERPset_UnitaryEquipmentTypeAirHandler
 Pset_UnitaryEquipmentTypeCommon
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 584 — IfcUnitaryEquipment Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 585.
Name
Qto_UnitaryEquipmentBaseQuantities

Table 585 — IfcUnitaryEquipment Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 586.
NameDescription
CasingMaterial from which the casing is constructed.

Table 586 — IfcUnitaryEquipment Material Constituents



Object Aggregation

The Object Aggregation concept applies to this entity as shown in Table 587.
PredefinedTypeRelatedObjectsDescription
 IfcDistributionElementUnitary equipment (air handlers in particular) may elaborate contained elements such as dampers, fans, coils, sensors, actuators, and controllers. Such breakdown provides access to component information and tracking of performance history for embedded elements.

Table 587 — IfcUnitaryEquipment Object Aggregation



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 588.
PredefinedTypeNameFlowTypeDescription
AIRHANDLERReturnAirInSINKAIRCONDITIONINGReturn air entering mixture or exhausted.
AIRHANDLERSupplyAirOutSOURCEAIRCONDITIONINGChilled supply air.
AIRHANDLEROutsideAirInSINKVENTILATIONOutside air entering mixture.
AIRHANDLERExhaustAirOutSOURCEEXHAUSTExhaust air leaving to outside.
AIRHANDLERChilledWaterInSINKCHILLEDWATERChilled water entering cooling coil.
AIRHANDLERChilledWaterOutSOURCECHILLEDWATERChilled water leaving cooling coil.
AIRHANDLERHeatingInSINKHEATINGSteam entering heating coil.
AIRHANDLERHeatingOutSOURCEHEATINGSteam leaving heating coil.
AIRHANDLERPowerSINKELECTRICALElectrical power source.
AIRHANDLERControlSINKCONTROLControl system communication.

Table 588 — IfcUnitaryEquipment Port Nesting




XSD Specification:

 <xs:element name="IfcUnitaryEquipment" type="ifc:IfcUnitaryEquipment" substitutionGroup="ifc:IfcEnergyConversionDevice" nillable="true"/>
 <xs:complexType name="IfcUnitaryEquipment">
  <xs:complexContent>
   <xs:extension base="ifc:IfcEnergyConversionDevice">
    <xs:attribute name="PredefinedType" type="ifc:IfcUnitaryEquipmentTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcUnitaryEquipment
SUBTYPE OF IfcEnergyConversionDevice;
PredefinedType : OPTIONAL IfcUnitaryEquipmentTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcUnitaryEquipmentTypeEnum.USERDEFINED) OR ((PredefinedType = IfcUnitaryEquipmentTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCHVACDOMAIN.IFCUNITARYEQUIPMENTTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcUnitaryEquipmentType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no unitary equipment type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcUnitaryEquipmentType.

Inheritance Graph:

ENTITY IfcUnitaryEquipment
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
INVERSE
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcDistributionElement
INVERSE
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
INVERSE
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcEnergyConversionDevice
ENTITY IfcUnitaryEquipment
PredefinedType : OPTIONAL IfcUnitaryEquipmentTypeEnum;
END_ENTITY;

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