I noticed that the bypass damper on our new system (2 zone) is installed downstream of the zone dampers (only a foot or so after, but still after). The instructions say to install it upstream of the zone dampers. Is that a problem?

Also, the DATS is installed directly in the silver box that the ducts connect to (don't know the name of that box!), which means in the line-of-sight of the air handler. The instructions say not to do that. Is that a problem? It's also installed in the same box mentione above, before the bypass damper (which is correct) but after the zone dampers. Is that correct?

Shouldn't the correct set-up be:

Air Handler> DATS > Bypass damper > Zone Dampers