Been There, I previously had a thread concerning the exhaust noise of this unit,

Hi,

just a couple questions about the Air conditioning on a new York Affinity
High Eff install,

1. Should the main plenum(?) have any space around the perimeter of the A/C unit on top of the furnace, I notice Air comming out of a couple corners, is this a design fitting issue or can some tape cover this seal?

2. I run the fan On and the whole house is pretty comfy with the A/C set @ 75, it says in the manual that the fan will be running at 50% high cool speed when the jumper is located where it's currently at , how can I increase the fan speed? should I increase the fan speed?
-the third floor does not get quite as cool, I tried to close some Basement supply to increase the flow to the third...