After creating your chilled water coils in each component, you should be able to find the PAU coil under the My Model section of OpenStudio on the right when you are editing HVAC diagrams. Follow these steps to have the two chilled water coils in series:
- Go to the HVAC Systems tab of OpenStudio and select the chilled water loop (same loop from your screenshot above)
- Click on My Model near the top right corner
- Click on Coil Cooling Water (you should see the name of the PAU cooling coil)
- Drag and drop the PAU cooling coil upstream (to the right) of the chilled beam coil on the demand side of the chilled water loop
When finished, the chilled water loop should look like the screenshot below.
