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;