IfcAirTerminalTypeEnum

BACnet MVD

#### IfcAirTerminalTypeEnum

Natural language names

| Air Terminal Type Enum
| Énumération des types d'entrée/sortie d'air

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcAirTerminalTypeEnum |  |  |  |
LOUVRE |  |  | ADDED |
EYEBALL | X | X | DELETED |
IRIS | X | X | DELETED |
LINEARGRILLE | X | X | DELETED |
LINEARDIFFUSER | X | X | DELETED |

##### Semantic definitions at the type

Type definition

Enumeration defining the functional types of air terminals.

> NOTE Architectural louvres within doors or windows are defined by IfcPermeableCoveringProperties.

> HISTORY New enumeration in IFC2x2. Modified in IFC4 to add LOUVRE and remove EYEBALL, IRIS, LINEARGRILLE, LINEARDIFFUSER.

Enumeration definition

Constant | Description
--- | ---
DIFFUSER | An outlet discharging supply air in various directions and planes.
GRILLE | A covering for any area through which air passes.
LOUVRE | A rectilinear louvre.
REGISTER | A grille typically equipped with a damper or control valve.
USERDEFINED | User-defined air terminal type.
NOTDEFINED | Undefined air terminal type.

##### Formal representations

XML Specification
`<xs:simpleType name="IfcAirTerminalTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="diffuser"/>
<xs:enumeration value="grille"/>
<xs:enumeration value="louvre"/>
<xs:enumeration value="register"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcAirTerminalTypeEnum = ENUMERATION OF (
DIFFUSER,
GRILLE,
LOUVRE,
REGISTER,
USERDEFINED,
NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

`

References: IfcAirTerminal IfcAirTerminalType

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