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.

Table 583 — IfcUnitaryEquipment Object Typing

Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 584.

Table 584 — IfcUnitaryEquipment Property Sets for Objects

Quantity Sets

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

Table 585 — IfcUnitaryEquipment Quantity Sets

Material Constituents

The Material Constituents concept applies to this entity as shown in Table 586.
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.
 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.
AIRHANDLERReturnAirInSINKAIRCONDITIONINGReturn air entering mixture or exhausted.
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:extension base="ifc:IfcEnergyConversionDevice">
    <xs:attribute name="PredefinedType" type="ifc:IfcUnitaryEquipmentTypeEnum" use="optional"/>

EXPRESS Specification:

ENTITY IfcUnitaryEquipment
SUBTYPE OF IfcEnergyConversionDevice;
PredefinedType : OPTIONAL IfcUnitaryEquipmentTypeEnum;
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));

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
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
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;
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;
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
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
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcEnergyConversionDevice
ENTITY IfcUnitaryEquipment
PredefinedType : OPTIONAL IfcUnitaryEquipmentTypeEnum;

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