The installers of a heating coil and a chilled water coil apparently installed them backwards at one of our buildings. This was brought to my attention by the engineer. The chilled water coil entering the coil is on the bottom (like I expected) but it is on the front or the face of the coil. The engineer says I can expect to see a 15% efficiency loss. The same goes for the heating coil. I believe they are going to "correct" this by supplying the coil from the top which is located on the back or rear of the coil.
I believe this will be a loss of efficiency as well but I don't have any information to back this up as I am not a smooth talker like the engineer. He claims to have worked for Heatcraft and he explained to me the reasoning for wanting the chilled water to enter on the back side of the coil and not the front. He also explained to me why you enter from the bottom of the chilled water coil and not the top. Yet I believe they are going to enter the top of the coil even though it is incorrect.
Question: I am pissed off and would like to see it corrected, but should I be?
Is entering the top of the coil sufficient?