EasyTouch RV 351

Included in the Box

EasyTouch RV model 351 is shipped with the following items:

• 1x EasyTouch RV 351 Display
• 1x Quick-Instruction Card
• 1x Mounting Bracket
• 4x Screw Hole Covers

The mounting bracket is used during installation. The screw hole covers can be used to cover holes in the wall from the previous display if they are exposed.

Installing the Display

Safety

First, it is recommended to remove both AC and DC power from your system. Unplug your RV from shore power and turn off any converters or generators to remove AC power. Open your 12-volt DC bus breaker or fuse to de-energize your display. This greatly reduces the chance of any harmful electrical discharge, as well as preventing accidentally opening a fuse.

Removing the Old Display's Faceplate

SZLCD
This is the thermostat on the right in the main product picture that has the square LCD and raised circular plastic. Depress the rectangular locking tab on the bottom of the display with a small screw-driver. Pull the front of the display away from the wall from the bottom.

CT
This is the thermostat on the left in the main product picture that has the rectangular LCD and has capacitive touch buttons. Carefully hold the base of the thermostat at the bottom while pulling the cover plate away from the wall. It is easiest to pull at one of the corners to get the plastic to pop off.

Backplate and Wire Labels

The backplate is now exposed that shows its screws and the display's wiring. Before removing the wiring, write down the color of the three wires and the name of the terminal that each wire goes to. Also take a picture of this wiring for your reference. The wire terminals will be labeled 12V+, COM or COMMS, and -12V or GND, depending on which display you have. You can use Table 2 to write down the color wire related to the three terminal labels. After recording the original wiring, disconnect them from their screw terminals and remove any wall attachment screws. Free the back plate from the wall.

Wiring the Display

Figure 3 shows a screwdriver depressing the COMM terminal of the EasyTouch RV push button connector, as well as the other terminals and what they look like. This is on the back of EasyTouch RV 351. Depressing the button opens the wire clamp jaw for that terminal. This allows a wire to be inserted. Releasing the button closes the jaw and grabs onto the inserted wire and makes the connection.

Figure 3 - EasyTouch RV Wire Terminals

Table 2 shows the names of the original display terminals and the matching EasyTouch RV terminal names. Insert the original wire into the appropriate EasyTouch RV terminal.

There should be approximately 3/8 inch (1cm) of exposed wire. Remove insulation or cut down the wire if it is a different length. If it is a stranded type of wire then twist them together by hand. Use a small screwdriver or similar tool to push down on the square push button. Insert the wire in the insertion space and release the push button. Verify the connection by gently pulling on the wire. Do not force excessive wire down into the connector. If the stripped wire end is longer than 3/8 inch, cut the end so there is no bare wire sticking out when properly inserted.

If you don't know which wire is which anymore! You can typically use a voltmeter to determine what each wire is. Disconnect the three wires and set the meter to measure DC voltage at least up to 16 volts (some meters can be set to a lower maximum voltage). Make sure your color probe is seated in the matching color hole of the voltmeter. Probe two of the three wires and match the measurement to Table 3. The measurements may be slightly different, but the proportion laid out by the table should be close enough to determine which wire is which.

Re-apply Power

Restore DC power. The display screen should light up and boot into the main menus. Restore AC power so that your appliances can run again. Move on to the section Mounting the Display, or the section Initial Setup Instructions and mount the display later.