IFC 4.3.0.1 (IFC4X3) development

7.5.2.1 IfcAirTerminalBoxTypeEnum

7.5.2.1.1 Semantic definition

This enumeration identifies different types of air terminal boxes.

7.5.2.1.2 Type values

Type 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 independent of supply pressure.

USERDEFINED

User-defined terminal box.

NOTDEFINED

Undefined terminal box.

Table 7.5.2.1.A

7.5.2.1.3 Formal representation

TYPE IfcAirTerminalBoxTypeEnum = ENUMERATION OF
	(CONSTANTFLOW
	,VARIABLEFLOWPRESSUREDEPENDANT
	,VARIABLEFLOWPRESSUREINDEPENDANT
	,USERDEFINED
	,NOTDEFINED);
END_TYPE;

7.5.2.1.4 References

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