#### 7.3.2.1 IfcBoilerTypeEnum

Enumeration defining the typical types of boilers.

Enumerated Item Definitions:

- WATER: Water boiler.
- STEAM: Steam boiler.
- USERDEFINED: User-defined Boiler type.
- NOTDEFINED: Undefined Boiler type.

> HISTORY New enumeration in IFC2x.

XSD Specification:

<xs:simpleType name="IfcBoilerTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="water"/>
<xs:enumeration value="steam"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

TYPE IfcBoilerTypeEnum = ENUMERATION OF (
| WATER, STEAM, USERDEFINED, NOTDEFINED);
END_TYPE;

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