How To Seal An Roof Top A C Unit

Remove the air conditioning unit placing it on its side and take out the sponge rubber gasket.

How to seal an roof top a c unit.

Reconnect the wiring harness or use wire nuts to join the wires together. Next position the air conditioner over the gasket and reattach it in reverse order to the rooftop. 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. Once the old gasket is removed and the site is clean place a new gasket over the opening in the roof.

Finally reattach the shroud and test the unit. Attach the manifold gauge to the suction side of the unit this is the large copper tubing. Read the gauge to make sure you need to top up or recharge. The next thing we might find are some dampers.

Once you see that it does attach the coolant container to the suction tubing and open it up. When a new unit has been installed it must be properly sealed to prevent leaks. Turn the air conditioner on by putting it on the lowest setting possible. Verify that your work sealed your air conditioner by testing it out.

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. 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. Removing the main unit from the roof.

Place the new gasket and reassemble the rooftop unit wiring and plastic housing. These are basically sheets of metal which rotate together.