Heating coils can only be incorporated within the supply sub-loops of air loops so you first need to go to the supply sub-loop of the air loop to which the coil is to be added. The Add heating coil tool icon will then appear on the toolbar. To place a heating coil, click on the Add heating coil tool.
Heating coils can be placed anywhere in the sub-loop but are more commonly incorporated within an air handling unit. To add a heating coil to an air handling unit, after clicking on the Add heating coil tool, move the cursor (with the coil attached to it) into the supply section of the air handling unit and click the mouse button to place the coil at the required location. Coils may be placed in front of the supply fan for a ‘draw-through’ configuration or after the fan for a ‘blow-through’ configuration:
