Do not mount the appliance on the ceiling, it is not designed for secure ceiling mounting.
For optional wall mounting, you need:
Screwdriver
Drill with appropriate size bit
For mounting on drywall:
Two #6 pan-head screws, 1 inch long (7mm diameter head, 25mm long)
Two wall anchors
For mounting on solid wood or metal:
Two #6 pan-head wood or machine screws, 1 inch long (7mm diameter head, 25mm long)
To mount the appliance on the wall
Drill two holes 4.5 inches (11.5 cm) apart in the wall where you want to mount the appliance.
If using wall anchors, insert a wall anchor into each hole.
Insert a screw into each wall anchor (into each hole if not using wall anchors), leaving 3/16 inches (0.45 cm) of the screws exposed (including screw head).
Position the appliance mounting slots over the screws and press in and down until the appliance is securely mounted.