To define a room

Click the Define icon.

CAUTION: At least one floor must exist in your project to trace a room.
Select a Room type for the new room.
Enter a Room name in the text field provided.
Change the default Room height to be smaller than Floor height to create a plenum space.
The height difference is automatically entered for Ceiling plenum height, and Underfloor plenum height is set to zero.
Enter an Underfloor plenum height.
The value you entered is automatically subtracted from Ceiling plenum height.
Select a shape element in the referenced drawing that defines the room perimeter.
The room and plenums are added to the OpenBuildings Energy Simulator Project Tree dialog box.