The challenges are to have the pieces staged so that you can bring the correct pieces of the AHU in the room to start construction. Also, for the manufacturer to have in-depth knowledge on how to build the unit in order to assist the contractors on site.
Haakon in this case did not need to send a factory trained representative to help with the build. They provided instructions to build the AHU on site prior to the build. Don's Plumbing was then able to unload the trailer and staged all the pieces according to the instructions. Haakon also had a factory contact to run through the build step by step to perform without any flaws.
The school now has a new AHU that supplies 12000 CFM to the building. It has been running flawlessly for over a year.