Remove controller door and control panel for easier access.
1a. Use enclosed hole template to mark and drill mounting holes. Leave enough room to open the door. Allow for screw anchors if necessary. Install top center screw first, and leave the screw head ¼” (6 mm) out from the wall.
1b. Hang the controller on the screw head.
1c. Secure the controller in place by installing screws in the remaining holes from inside the cabinet. Replace control panel and door.