IfcAirTerminalBoxTypeEnum

BACnet MVD

#### IfcAirTerminalBoxTypeEnum

Natural language names

| Air Terminal Box Type Enum
| Énumération des types de diffuseur d'air

##### Semantic definitions at the type

Type definition

This enumeration identifies different types of air terminal boxes.

> HISTORY New enumeration in IFC2.0.

Enumeration definition

Constant | Description
--- | ---
CONSTANTFLOW | Terminal box does not include a means to reset the volume automatically to an outside signal such as thermostat.
VARIABLEFLOWPRESSUREDEPENDANT | Terminal box includes a means to reset the volume automatically to a different control point in response to an outside signal such as thermostat: air-flow rate depends on supply pressure.
VARIABLEFLOWPRESSUREINDEPENDANT | Terminal box includes a means to reset the volume automatically to a different control point in response to an outside signal such as thermostat: air-flow rate is independant of supply pressure.
USERDEFINED | User-defined terminal box.
NOTDEFINED | Undefined terminal box.

##### Formal representations

XML Specification
`<xs:simpleType name="IfcAirTerminalBoxTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="constantflow"/>
<xs:enumeration value="variableflowpressuredependant"/>
<xs:enumeration value="variableflowpressureindependant"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>
`
EXPRESS Specification
`TYPE IfcAirTerminalBoxTypeEnum = ENUMERATION OF (
CONSTANTFLOW,
VARIABLEFLOWPRESSUREDEPENDANT,
VARIABLEFLOWPRESSUREINDEPENDANT,
USERDEFINED,
NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

`

References: IfcAirTerminalBox IfcAirTerminalBoxType

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