Air Conditioner Drain Kit

 

An instruction sheet comes with the kit but here are some additional tips:

 

You will need to cut a gap in the sealing gasket that is installed by the factory on the bottom of the air conditioner. Install the cups first (you will probably need to remove a 1/4″ hex head screw near or underneath each the two cup mounting locations). Use a couple of the provided screws to mount the cups to the underside of the A/C base pan. You are centering each one on the drain spouts.

Next, lay the drain hose on top of the gasket and trial fit it to the flanged spout so you know exactly where to cut the gasket.

Then remove the hose and cut the gasket right down to the base pan and remove the cut piece.

Install the drain tubing onto both drain fittings and be sure to attach the clamp before connecting to the fitting so it is already on the hose when you attach the hose to the fitting. Then move the clamp over the hose and fitting and it will make a tight seal.

Now completely fill in the gap you cut (a little over fill is fine) with Trempro 635. Do not use silicone. Be sure to get your sealant under the hose as well by lifting it slightly and then re-seating it in the sealant. The sealant fills in the gap and completes the water tight seal.

The final step is to add the second gasket right over the original so that you now have a double layer of gaskets. It should be self stick…just peel off the paper and apply. It should be identical to the original.

You are now ready to install the unit on your roof. Tighten the 4 bolts from the underside so that the gaskets compress approx. 50%. Connect the drain hose from inside the trailer and you are ready to install the air distribution box from underneath.

*Thanks to Lew Farber from Master Tech RV Systems for the tips above.

Click Here for Installation Sheet