Autodesk 235B1-05A761-1301 User Guide - Page 207

Property SupplyAirFlow and ReturnAirFlow Description If you are exporting gbXML data for analysis, you do not need to enter values for these fields. Airflow will be calculated for this space, and you can enter your desired values after you import the load calculations. These values are for the flow rate for the room, not for the flow per unit area or per person. Note that the RequiredOAFlow (occupant air flow) property is not editable. Its value is calculated automatically when you specify a room type for Space Occupancy and a number of occupants for Occupancy. Attaching Property Sets to Zones Before exporting space data to gbXML, you must assign all spaces to a zone. You configure a zone for analysis by specifying the heating and cooling temperatures for the zone. To attach property sets to a zone 1 Create zones, as described in Configuring Zone Styles on page 185. 2 Select all zones, and click Home tab ➤ Build panel ➤ Tools drop-down ➤ Properties . 3 On the Extended Data tab of the Properties palette, click (Add Property Sets). 4 In the Add Property Sets dialog, select ZoneEngineeringObjects, and click OK. The property set is added to the selected zone, and it can be viewed on the Extended Data tab. 5 Under Property Sets, specify the appropriate values for design heating and cooling temperatures. Attaching Spaces to Zones For load calculation purposes, you must assign all spaces to one or more zones. You can also attach zones to other zones, which is useful for exporting zone data through reference drawings. However, the Export Attaching Property Sets to Zones | 189