Ok so i typically do not do many modular blower installs but have come accross afew and reading the instructions for this particualr brand it states the evaporator coil must be downstream of the blower, basically before the blower after the return. I understand we have no choice on fan coil thats the way they are built and may have something to do with water overflowing into heat strips and components, also understand same concept with upflow/vertical installs for same reason..
However a horizontal install IMO we should have a choice and i feel we should , like a furnace install, put the coils in the upstream before the supply plenum for same reasons . I think cold air leads to moisture which also helps stick dirt and debris onto blower motor/wheel/electronics and that cannot be good.
Why can the coil NOT be put in supply side of modular blower. Ive seem many installs way back done that way..
so whats the theory behind the new install instructions stating to NOT install them that way now? can the blower motors not push as hard as they can pull?
is this only for some brands?