I recently finished installing one
myself and the refer blocked 80% of of the top vent so left the rest open although my coils are all on the bottom of the unit. I created a baffle that directs the hot air out part of my outside vent on the left side. Used the alum duct tape to seal off the rest of the louvers on the vent so outside air cannot get in on the right side. In the winter I may remove part of the baffle and seal all of the vent so the hot air stays inside.
Capped off the copper gas line but I may put a quick connect on it in the future although it's on the wrong side of the rig to be handy.
