Month that the heating design day occurs on. 1=Jan 12=Dec | 
                           
| Element | Weather | 
<xsd:element name="DDMonthHeat" type="xsd:integer"> <xsd:annotation> <xsd:documentation>Month that the heating design day occurs on. 1=Jan 12=Dec</xsd:documentation> </xsd:annotation> </xsd:element>  |