The drawing space allows you to draw over an architectural plan after importing underlays (. PNG's) into the workspace. Once imported, a quick sequence of calibrating and setting user preferences allows drawing thermal zones or spaces. The process is repeated for all zones and levels of the building.
Drawing calibration is key to the correct sizing and scaling your model. Where possible, use the longest length to scale your Drawing from an annotated length on the Underlay.
Calibrate your Drawing by selecting ‘Calibrate Drawing’ in the drawing space ribbon. Left-click the starting point of the calibration and hold and drag to the endpoint. Set your length and press ‘Calibrate’.