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LTRx-512 Installation and User’s Guide
3
To surface mount the Master
1. Place the Master on its back with the display unit facing up and the keypad to the right
2. Remove the two screws from just above the display unit
3. Lift the display unit up and away from you. Note that two rivets at the bottom of the cover
prevent you from lifting it straight up
4. Unplug the ribbon power cable from the back of the display unit
5. Set the display unit aside
6. Place two wall anchors and #8 screws 10 inches apart and level on the wall where you want
to mount the Master
7. If needed, place two wall anchors 5 inches below the first two screws
8. Hang the power supply onto the top two screws using the keyholes on the back
9. Screw two more #8 screws through the two holes at the bottom of the power supply into
the wall anchors
10. Follow the wiring steps in step 2
11. Reconnect the ribbon cable
12. Replace the display unit using the two screws that you earlier removed
Semi-Flush Mount
You can set the power supply portion of the Master into the wall. See the steps below and refer to
the Surface Mount drawing to semi-flush mount your Master. A competent electrician should mount
the Power Supply Box inside the wall
To semi-flush mount the Master
1. Place the Master on its back with the display unit facing up and the keypad to the right
2. Remove the two screws from just above the display unit
3. Lift the display unit up and away from you. Note that two rivets at the bottom of the cover
prevent you from lifting it straight up
4. Unplug the ribbon power cable from the back of the display unit
5. Set the display unit aside
6. The power supply measures 12" wide x 6" high x 3 3/8" deep. The cover extends ½" around
the 12" x 6" dimensions. Cut a hole roughly 12¼" x 6¼" in the wall between two studs where
you want to hang your Master
7. Cut two blocks of wood for filler and attach them to the studs
8. Using the two holes on each side of the power supply, screw it to the blocks
9. Follow the wiring steps in step 2
10. Plug the ribbon cable
11. Replace the display unit using the two screws that you earlier removed