The Erase Load Calculation Map command is used to erase the load calculation map shading and scale inserted using the Display Load Calculation Map command
To erase a load calculation map, go to
Ribbon: DM HVAC->Load Calculations-> 
Erase Load Calculation Map
Pulldown Menu: DM HVAC->Load Calculations->Erase Load Calculation Map
The shading on each room and the scale will be erased from the drawing.