Originally Posted by captainmorgan
asI w trying to look into why I have Would that cause the AC to separate from the roof any? I do not want to go messing things up to get a little better performance. Anyone have instructions? I have a Dometic Brisk Air II 15k BTU with a Quick Cool Ceiling Assembly.
On the AC's I've installed there are four long lag bolts that screw up through the ceiling assembly in each corner into the upper unit and tighten down a foam compression seal. If you remove the ceiling unit carefully this compression seal should be stuck to the roof membrane and hold the upper unit in place. The roof material was probably cut out in an X pattern and the corners stapled down to the roof trusses and may be in the way but it wouldn't hurt to trim it back.
On my Voltage the main AC screws down from the top, but I believe the garage and bedroom AC's have the lag bolts from underneath.