updated pictures

This picture shows the over head chill water piping. These are the risers that tie in the piping to the coils.

This  picture shows the over head piping after it  has been insulated. the reason chill water piping needs to be insulated is because it will sweat. The temper differential change will make the piping appear to be leaking. The coils pans have been tied together with the copper pipe shown. The copper pipe is necessary from pan to pan, because the air flow through the coils would send the water all over.

The fan wall has now been assembled. The 12 fans will add up for a combination of 27,000 CFM. This a cost effective way to add or subtract the amount of air needed.