EasyTouch RV 353 Manual

Installing the Thermostat

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 thermostat. This greatly reduces the chance of any harmful

electrical discharge, as well as preventing accidentally opening a fuse.

Removing the Old Thermostat

The OEM thermostats have a front assembly that detaches from a back plate. Rotate the

thermostat counter-clockwise to free the front assembly from the backplate. The front assembly will have

4 wires attached to it by a screw terminal block. Take a picture of the wire colors as they enter their screw

terminals on the front assembly, to use as a reference later. Try to capture the wire names as well, which

are labeled at the base of the screw terminals. You can also write in Table 3 later in this section to record

what color wires have what name.

The backplate is attached to the wall by 2-4 mounting screws; remove them to remove the

backplate from the wall.

Wiring the New Thermostat

EasyTouch RV will come with 4 wires to make the appropriate connections. Micro-Air will also

provide slide in, lever operated connectors to make your wire connections to the OEM wires coming from

the wall. Table 3 shows how the EasyTouch RV wires will interface with the existing wires. Fill in the OEM

wire color column of the chart (along with a picture saved elsewhere) to have a recorded wiring reference.

Table 3 – Wire Color Chart

OEM Wire Color (Provided

to write in your own color)

OEM Wire

Label

Matching EasyTouch Wire

Color

Function

Blue/White Stripe

Communication

Purple

Communication

+12V

Red

( + ) 12 VDC Power

GND

Green

( - ) 12 VDC Power