AirSystem represents an analytical air system.
| Attribute | Description | 
|---|---|
| id |  
			  The identifier.  | 
| preheatCoilType |  
			  The value for this attribute is collected from the Preheat Coil parameter of the associatedZone Equipment element.  | 
| heatingCoilType |  
			  The value for this attribute is collected from the Heating Coil parameter of the associatedZone Equipment element.  | 
| coolingCoilType |  
			  The value for this attribute is collected from the Cooling Coil parameter of the associatedZone Equipment element.  | 
| Element | Description | 
|---|---|
| Name |  
				 This value is collected from the Name parameter from the associatedAir System Revit element.  | 
| CADObjectId |  
				 This value is collected from the Element Id of the associatedAir System Revit Element.  | 
| HeatExchanger |  
				 This value for this element is collected from the Heat Exchanger parameter of the associatedAir System Revit Element.  | 
| Fan |  
				 This value for this element is collected from the Fan parameter of the associated Air System Revit Element.  | 
| HydronicLoopId |  
				 This value for this element is a reference to the Hydronic Loop collected from the Preheat Hot, Heating Hot or Chilled Water Loop parameter of the associatedAir System element.  | 
| AnalysisParameter |  
				 Project parameters assigned to Air Systems elements will be exported to gbXML as AnalysisParameter's.  | 
<AirSystemcoolingCoilType="ChilledWater"heatingCoilType="HotWater"id="as-1"preheatCoilType="ElectricResistance">
<Name>Variable Volume Air System</Name>
<CADObjectId>552868</CADObjectId>
<HeatExchangerheatExchangerType="Enthalpy"id="he-1"/>
<FanfanType="VariableVolume"id="f-1"/>
<HydronicLoopIdcoilType="Cooling"hydronicLoopIdRef="hl-2"hydronicLoopType="PrimaryChilledWater"/>
<HydronicLoopIdcoilType="Heating"hydronicLoopIdRef="hl-1"hydronicLoopType="HotWater"/>
</AirSystem>