[. . . ] Side louvers and the rear of the AC must have clear air space to allow enough airflow through the condenser, for heat removal. The rear of the unit must be outdoors, not inside a building or garage. CAUTION When handling unit, be careful to avoid cuts from sharp metal edges and aluminum fins on front and rear coils. Before installing unit, the top rail must be assembled on the unit. [. . . ] Top Rail Hardware Qty. 3/8" Screw Top Rail Packaging 4 1 NOTE: SAVE CARTON and these INSTALLATION INSTRUCTIONS for future reference. The carton is the best way to store unit during winter, or when not in use. Please read these instructions carefully. TOOL NEEDED: Phillips Screwdriver A. Remove the air conditioner from the carton and place on a flat surface. Remove top rail from the bottom of the packaging material as shown in Fig. Align the hole in the top rail with those in the top of the unit as shown in Fig. Secure the top rail to the unit with the 3/8" Screws as shown in Fig. Drive 3/4" (19 mm) locking screws through the frame lock and into the sill (FIG. NOTE: To prevent window sill from splitting, drill 1/8" (3 mm) pilot holes before driving screws. 4 7 Cut foam seal and insert in the space between the upper and lower sashes (FIG. 9 If AC is Blocked by Storm Window 5 Drive 1/2" (13 mm) locking screws through frame holes into window sash (FIG. 14, or remove storm window before air conditioner is installed. FIG. 14 SASH BOARD THICKNESS AS REQUIRED, FOR PROPER PITCH TO REAR, ALONG ENTIRE SILL. 10 STORM WINDOW FRAME OR OTHER OBSTRUCTION 1 1/2" MIN (38 mm) FIG. 11 If Storm Window Frame must remain, be sure the drain holes or slots are not caulked or painted shut. Accumulated Rain Water or Condensation must be allowed to drain out. 6 To secure lower sash in place, attach right angle sash lock with 3/4" (19 mm) screw as shown (FIG. [. . . ] 11 If Storm Window Frame must remain, be sure the drain holes or slots are not caulked or painted shut. Accumulated Rain Water or Condensation must be allowed to drain out. 6 To secure lower sash in place, attach right angle sash lock with 3/4" (19 mm) screw as shown (FIG. 12). Removing AC From Window * * * * * Turn AC off, and disconnect power cord. [. . . ]