Originally Posted by 64airstream
Do you have a part number or model and manufacturer of the drain pan system you installed? Somehow, I was under the impression, the Coleman Mach 3 13,500BTU Power Saver did not have drain pans available. Any info would help.
HI Roy, We ordered the ac, the drain and the interior ceiling control panel from Amazon. This is the drain set up we ordered. It's made for a dometic penguin but will work with the Coleman Mach 3. Dometic 3107688.016 Drain Kit
Sold by: American RV Company $61.73. It required some simple modifications but appears to be functioning well. The two drain cups attach under the bottom of the unit, before attaching these we used a forstner bit 5/8" by hand to make two small holes through the bottom gasket which was attached to the unit in order to run the tubes through it instead of cutting the gasket. The drain kit included a 14" square gasket and two extra strips of gaskets. We glued The 14" one to the gasket that was already attached to the ac. This gives the drain cups room to clear the top of the camper. The other two strips were added to the back edge of the ac to level it up. The two tubes went to a tee which attached to our existing drain hose. Did not seal the cups so if the hose gets stopped up they will overflow on the outside of the trailer. tightened it down on the roof to the white indicators on the gasket. It's difficult to explain but it really was not very difficult. Hope this helps.