MICRO-AIR EasyTouch 352 Manuel utilisateur

EasyTouch

352 and 352C

Operating Manual

Revision 1.4

2 
©2021 Micro-Air Corp May 20, 2021, revision 1.4 
Contents 
Installing the thermostat ..............................................................................................................................4 
Removing the old thermostat...................................................................................................................4 
Using the push button terminals ..............................................................................................................4 
Wiring the thermostat ..............................................................................................................................5 
Connector models.................................................................................................................................5 
Push button wire insert models............................................................................................................5 
Direct wired models..............................................................................................................................6 
Using this thermostat on other applications ........................................................................................7 
Mounting the thermostat .........................................................................................................................8 
Initial setup instructions ...............................................................................................................................9 
Setting the heat sources ...........................................................................................................................9 
Connecting remotely.................................................................................................................................9 
Operating the thermostat...........................................................................................................................10 
Main screen.............................................................................................................................................10 
Away screen (Heat and cool set points) .................................................................................................11 
Schedule screen ......................................................................................................................................12 
Setting a change event........................................................................................................................12 
12- or 24-hour format.........................................................................................................................12 
Setting the time ..................................................................................................................................12 
Enabling the schedule.........................................................................................................................12 
Settings Screen............................................................................................................................................13 
Gas Heat Override...................................................................................................................................14 
Smart device application only features ......................................................................................................14 
Reset device............................................................................................................................................14 
Calibrate Touchscreen ............................................................................................................................14 
Check for updates ...................................................................................................................................14 
Notifications............................................................................................................................................14 
Installation Troubleshooting.......................................................................................................................15 
Testing an output....................................................................................................................................15 
WIFI Troubleshooting..................................................................................................................................15 
Appendix: First connection steps................................................................................................................16 
Adding a control......................................................................................................................................16 

Connecting to a new WIFI network ........................................................................................................16

Updating the thermostat ........................................................................................................................16

The EasyTouch 352 model thermostats were designed to directly replace Coleman™, Airxcel™

and RVP™ single zone DC thermostats. The thermostats can be used in other applications with certain

electrical limitations as explained later in this document.

Installing the thermostat

There are three steps to installing the thermostat. First remove your old thermostat. Next

disconnect and reconnect the wiring. Finally install the mounting pins to the wall and mount your new

thermostat.

Removing the old thermostat

The larger Airxcel thermostats (approximately 5.5 inches wide by 3.75 inches tall) have a front

cover that pops off. Behind the cover there are 2-4 mounting screws that must be removed. Once the

thermostat is removed, pull out some of the wire from the wall and take a picture of the thermostat

wiring connections to the original thermostat.

The smaller three button thermostats are mounted on a button mount similar to the EasyTouch

RV mount. Slide the thermostat up and pull away from the wall to remove this thermostat. Once the

thermostat is removed, take a picture if the wiring order so it can be duplicated on the new thermostat.

Using the push button terminals

Figure 1 shows a screwdriver depressing the push button

connector. The silver gate is opened for the wire to be inserted.

Releasing the button traps the wire and makes the connection.

Remove approximately 3/8 inch (1cm) of insulation from

the wire to be inserted. Use a small screw driver (not provided) 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.

Figure 2

Figure 1

Wiring the thermostat

Original thermostats can have a plug-in connector, push button connector block, or be direct

wired to the RV manufacturers wiring. All EasyTouch versions of the 352 thermostats have the push

button connector block. 352C models (X03 and X04 extensions) have a connector pre-wired to the

connector block for those models that come with connectors.

The tables in each section below list the RVP/Airxcel/Coleman thermostat model numbers that

can be used with each thermostat installation type. If your thermostat is not listed, please contact

Micro-Air https://www.micro-air.com/SupportRequest to verify the thermostat you received is correct

for your application. Coleman model numbers can be found in your original user’s manual and on the

back side of the thermostat or the back of the mounting plate.

Connector models

Button/switch

8330*337*

8330*339*

8330*346*

8330*348*

8330*368*

8530*338*

8530*339*

8530*346*

3 button

9430*335*

9430*336*

9430*339*

9430*340*

9430*354*

9430*355*

9430*357*

9430*358*

9630*337*

9630*352*

These models are the easiest to install. Just disconnect the connector from the wiring harness

on the original thermostat and plug in the new thermostat. Connectors are keyed so you cannot mix the

connectors.

Push button wire insert models

9430*337*

9430*338*

9430*342*

9430*351*

3430*351*

9430*353*

9430*356*

9630*335*

9630*336*

9630*351*

9630*353*

These thermostats connect using push

terminals on the back of the thermostat. Examine

the original thermostat and notice the labels

printed are printed as shown in figure 2. These

labels correspond to the same labels on the

EasyTouch thermostat. It is recommended to

remove DC power when moving the wires from

one thermostat to the other. Touching some wires

together can trip a breaker or burn a fuse in the

RV DC power circuit powering the thermostat. We

also recommend taking a picture of the original

thermostat wiring order so you can verify the

connection order on the new thermostat.

Figure 2

Direct wired models

7330*332*

7330*335*

7330*336*

7330*385*

7330*786*

8330*336*

8330*338*

8330*386*

8330*387*

8350*336*

8530*345*

8530*348*

8530*349*

8550*335*

9330*378*

9330*380*

9330*382*

9530*380*

Direct wired models have wires coming out of the back of the thermostat that are connected to

the manufacturers wiring harness using a crimp splice. The colors on the RV manufacturers harness can

vary but the wires connected to the thermostat are always the same as shown in the chart below.

Follow the thermostat wires to where they are crimp spliced to the RV wire harness. Write in the RV

wiring harness colors in the chart below before making connections. Some thermostats and harnesses

may not have all of the wires shown.

Note: The sensor wires (green with white stripe) may be connected either way as long as one wire is

connected to each of the SEN terminals.

Original

thermostat wire

color

Original factory wire harness

color (Write in here)

Connect to

EasyTouch

terminal

label

Function

Red

+12VDC

Blue

-12VDC, Ground

Gray

Fan low

Green

Fan high

Yellow

Compressor

White/Black stripe

WHP

Heat pump (Valve)

White

Furnace

Green/White stripe

SEN

Sensor

Green/White stripe

SEN

Sensor

Figure 3

Using this thermostat on other applications

It is possible to use this thermostat for custom installations. The outputs are all +12-volt active

and open collector (high impedance) inactive outputs. Maximum drive current is 200mA per output. This

thermostat cannot be used for 24 VAC applications. Contact Micro-Air if you are not certain this device

will work in your intended application.

Mounting the thermostat

Step 1: Locate the mounting buttons

horizontally across the hole with the smaller

diameter against the wall.

Step 2: Screw in one screw and level the

buttons so the display will be straight when

installed.

Step 3: Screw in second screw making sure the

two buttons remain level.

Step 4: Remove mounting tab before mounting

on the wall.

Step 5: Aligning the buttons with the holes in

the back of the display. Press the display against

the wall and gently slide the display down to

lock it in place.

Initial setup instructions

Setting the heat sources

It is necessary to set up the heating sources prior to operating your thermostat. Press the

settings button on the main screen. Select the heating sources button on the settings

screen. Select furnace, Heat pump, or heat strip by pressing the icon. The red circle

with a line through it will disappear indicating the heat source is available. Heat pump and heat strip

cannot be selected together.

Connecting remotely

This thermostat may be operated remotely using either Bluetooth or WIFI. Apps may be loaded

from the Google Play store or Apple App store. The first time the app is opened, it will ask to create an

account. A WIFI connection on your smart device is necessary for this step. Create your account and

follow the prompts to connect your thermostat.

If a second user is going to use the thermostat remotely, they can use the same account and

password as the first user. Each thermostat can only be assigned to a single account.

Operating the thermostat

Main screen

1. Inside temperature shows the ambient

temperature of the room. If the temperature

is followed by (R), the thermostat is using the

remote sensor input on the back of the

thermostat.

2. WIFI indicator shows the state of the WIFI

connection. Green indicates WIFI is

connected properly, Red indicates

connection to router only, bars indicate signal strength, and no symbol indicates no connection.

3. Raise and lower the temperature set point using the red and blue arrows.

4. Use the power button to turn the system on or off. Button is red for off and green for on.

5. Pressing the mode icon changes from cooling or heating modes depending on what is available

in your system. See table 1 for a list of all possible modes.

Table 1

6. Pressing the fan icon selects between manual (always on) fan speeds and automatic fan speeds.

Automatic will turn the fan off after the heating or cooling cycle is completed. See table 2 for

available fan speeds.

Table 2

7. Home-away-schedule icon. Pressing this button selects between these modes. Home mode is the

normal operating mode using a single setpoint for temperature control. Schedule mode allows

changing set points throughout the day programmatically. Away mode allows setting a heating and

a cooling set point and automatically changing from heating to cooling.

8. Pressing the settings gear will change the screen to allow additional setup functions.

9. Pressing the set point will change the system units from °F to °C and back. The setpoint is also

used as an indicator of system operation. A red set point indicates a heating cycle is in process. A

blue set point indicates a cooling cycle is in process. A white icon indicates no cycle is in process

The hourglass symbol indicates that a delay is in process and operation will resume once the

delay is complete. It is an indication that the display is handling the requested operation.

Fan only

Heat strip only

Cool Only

Automatic cool and furnace

Furnace only

Automatic cool and heat pump

Heat pump only

Automatic cool and heat strip

Fan

low

Fan

high

Fan

Auto

Ce manuel convient aux modèles suivants

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