IfcUnitaryEquipmentType

Definition from IAI: The element type IfcUnitaryEquipmentType defines a list of commonly shared property set definitions of a unitary equipment element and an optional set of product representations. It is used to define a unitary equipment element specification (i.e. the specific product information, that is common to all occurrences of that product type).

> NOTE: The product representations are defined as representation maps (at the level of the supertype IfcTypeProduct, which get assigned by an element occurrence instance through the IfcShapeRepresentation.Item[1] being an IfcMappedItem.

A unitary equipment type is used to define the common properties of unitary equipment that may be applied to many occurrences of that type. Unitary equipment typically combine a number of components into a single product, such as pre-packaged rooftop air-conditioning units, split systems, etc. Unitary equipment types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.

The occurrences of the IfcUnitaryEquipmentType are represented by instances of IfcEnergyConversionDevice or its subtypes.

Property Set Use Definition:

The property sets relating to this entity are defined by the IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. It is accessible by the inverse IsDefinedBy relationship. The following property set definitions specific to this entity are part of this IFC release:

- Pset_UnitaryEquipmentTypeAirConditioningUnit: property set for air conditioning unitary equipment types

- Pset_UnitaryEquipmentTypeAirHandler: property set for air handling unitary equipment types

> HISTORY: New entity in IFC Release 2x2.

EXPRESS specification:

ENTITY IfcUnitaryEquipmentType
SUBTYPE OF ( | IfcEnergyConversionDeviceType);
PredefinedType | : | IfcUnitaryEquipmentTypeEnum;
WHERE
WR1 | : | (PredefinedType <> IfcUnitaryEquipmentTypeEnum.USERDEFINED) OR ((PredefinedType = IfcUnitaryEquipmentTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));
END_ENTITY;

Attribute definitions:

PredefinedType | : | The type of unitary equipment.

Inheritance graph

ENTITY IfcUnitaryEquipmentType;
ENTITY IfcRoot;
GlobalId | : | IfcGloballyUniqueId;
OwnerHistory | : | IfcOwnerHistory;
Name | : | OPTIONAL IfcLabel;
Description | : | OPTIONAL IfcText;
ENTITY IfcObjectDefinition;
INVERSE
HasAssignments | : | SET OF IfcRelAssigns FOR RelatedObjects;
IsDecomposedBy | : | SET OF IfcRelDecomposes FOR RelatingObject;
Decomposes | : | SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;
HasAssociations | : | SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcTypeObject;
ApplicableOccurrence | : | OPTIONAL IfcLabel;
HasPropertySets | : | OPTIONAL SET [1:?] OF IfcPropertySetDefinition;
INVERSE
ObjectTypeOf | : | SET [0:1] OF IfcRelDefinesByType FOR RelatingType;
ENTITY IfcTypeProduct;
RepresentationMaps | : | OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;
Tag | : | OPTIONAL IfcLabel;
ENTITY IfcElementType;
ElementType | : | OPTIONAL IfcLabel;
ENTITY IfcDistributionElementType;
ENTITY IfcDistributionFlowElementType;
ENTITY IfcEnergyConversionDeviceType;
ENTITY IfcUnitaryEquipmentType;
PredefinedType | : | IfcUnitaryEquipmentTypeEnum;
END_ENTITY;