I bought the 1400 BTU LW1517IVSM a couple weeks ago and it was delivered this past week in good condition. I installed in our first floor window according to the manual and did not need to use a AC support bracket I purchased, so I used the 2 brackets supplied with the unit and everything seems great.  So far we are very happy with the way it runs and cools the first floor (4 rooms).  One thing I'm not sure of is whether I should remove the rubber plug under the unit to drain water or is it best to leave the plug in while it is running?  I could not find anything in the manual that comes with this AC.