From the roof he will cut a hole the same size as the diameter of the vent.
Installing ac on roof.
I knew that i needed this frame to line up with the structural ribs in the van where i would be attaching my ceiling panels.
In my case the unit is installed just behind the cab area.
On the interior of the rv install the bolts that hold the ceiling unit into place.
Installing a rooftop air conditioner also has the advantage of keeping all moving parts together.
Precision air plumbingoctober 5 2017.
Remove the mount and drill a 3 32 2 4mm wide 1 4 6 mm deep starter hole in the roof.
So make sure that you weigh your options carefully and choose the right system for your home or office without worrying about additional costs.
Over the hole you made mount the roof portion of the air conditioner.
Installing an ac system on your roof roughly costs the same as having a split system installed on the ground.
From inside the attic your roofing professional will drive a nail about one third of the way down from the ridge between two rafters to mark the desired spot for installation.
Mount and secure the ceiling unit.
Drill the top hole.
This ac unit is quite heavy about 90 pounds so i wanted to provide some extra rigidity to metal van roof.
While holding the mount in place move the plastic track out of the way and mark with a pencil through the top hole.