Today i had a water source heat pump feeding a classroom and 3 offices. It has a main trunk line with 8" taps coming off of it. There are a total of 7 taps on this unit. 4 for the classroom and 1 for each office. Well the problem i am having is the one diffuser nearest to the unit isn't putting out hardly any air. I pulled the duct off and inspected inside the duct. At this point in the duct, it is like there is a dead spot. The air is just turbulating around the opening. This duct tap comes off right after the flex connector. It is the first fed. The diffusers that come off further down the main get plenty of air. Why is this? What can i do to the ducting to fix this problem? The office with the problem has the stat. So it is causing no heat or cool to go into the room. So it either burns everyone out or freezes everyone out depending.
Thanks for the help!