How To Seal An Roof Top A C Unit

The proper way to seal an rv air conditioner is to use a rubber compression gasket placed between the roof of the rv and the air conditioner.

How to seal an roof top a c unit.

Finally reattach the shroud and test the unit. The next thing we might find are some dampers. Remove the air conditioning unit placing it on its side and take out the sponge rubber gasket. When a new unit has been installed it must be properly sealed to prevent leaks.

Use a wonder bar or putty knife to pry loose the caulk and or butyl tape that was used to make a watertight seal on the air conditioner. Place the new gasket and reassemble the rooftop unit wiring and plastic housing. Addison il august 24 2009 pres on the hvac industry s leader in adhesive gaskets and tapes has introduced a line of contractor grade curb tapes specifically designed to seal roof curbs to a c units preventing rain moisture and dust from damaging their increasingly sensitive electronics. Removing the main unit from the roof.

Next position the air conditioner over the gasket and reattach it in reverse order to the rooftop. Once you see that it does attach the coolant container to the suction tubing and open it up. Attach the manifold gauge to the suction side of the unit this is the large copper tubing. Not every unit has these but newer models typically do.

After you get the air conditioner free from the roof it is time to lower it down off the roof. Read the gauge to make sure you need to top up or recharge. These are basically sheets of metal which rotate together. Reconnect the wiring harness or use wire nuts to join the wires together.

You may also need to reseal an air conditioning unit if it has started to leak. They open fully to allow air to enter the unit or they close to seal the unit and prevent air entering or leaving.