Professional Contractor
INSTALLATION GUIDE
37-7498
Exit
Next
Setup
Indoor
Exit
Next
Wireless Setup
Connect
3 EASY STEPS
1. Install on the wall
2. Configure for HVAC system
3. Connect to Wi-Fi
Connect Wi-Fi now or homeowner connects later
Installing Sensi thermostat isn’t that different than
installing a non Wi-Fi thermostat.
Terminal Cross Reference
Old
Sensi
Conventional
thermostat...
thermostat…
RC
RC*
Power for cooling
RH, R
RH*
Power for heating
C, X, B**
C
Common wire
W, W1, W/E
W/E
1st stage indoor heat
W2
W2
2nd stage indoor heat
Y, Y1
Y
1st stage outdoor cool
Y2
Y2
2nd stage outdoor cool
G
G
Fan
*
If the old thermostat has

separate RC and RH wires,

clip the RC/RH jumper on

the back of the thermostat.
** Label “B” as “C” only if

the old thermostat also

had a wire on “O”.

If there is no wire on

“O” – label the wire “B”.
Back of new thermostat
1. INSTALL on the wall
For Conventional Systems
Terminal Cross Reference
Old
Sensi
Heat Pump
thermostat…
thermostat…
RC
RC*
Power for cooling
RH, R
RH*
Power for heating
C, X, B**
C
Common wire
W, W1, W/E,
W/E
1st stage aux/
Aux/E, E

emergency heat
W2***
W2
2nd stage aux/


emergency heat
Y, Y1
Y
1st stage compressor
Y2
Y2
2nd stage compressor
G
G
Fan
O, B**, O/B
O/B
Heat pump


changeover valve
L
L
Heat pump diagnostic
*
If the old thermostat has separate RC and RH wires, clip the RC/RH jumper

on the back of the thermostat.
** Label “B” as “C” only if the old thermostat also had a wire on “O”.

If there is no wire on “O” – label the wire “B”.
*** On Heat Pump systems with separate W2 and E wires, label both wires W/E

(2 wires on one terminal).
For Heat Pump Systems
Exit
Next
Setup
Indoor
Exit
Next
Setup
Indoor
Room Temperature
Set To
Heat Off Cool
Auto On
On Off
Exit
Next
Wireless Setup
Connect
2. CONFIGURE for HVAC system
For HVAC System Type
A. Press Menu to enter

configuration menu.
B. Press Next until you see
“Setup Outdoor” menu

item 3.
C. Use Up/Down Arrows

to change settings.

Press Next to continue

through menu items.
D. Press Exit
when you’re finished.
Configuration Menu Items Reference
No. Menu Item
Default
Options
1 Wireless Setup
—
Connect

Connects Thermostat to Wi-Fi network
2
Fahrenheit or Celsius
F
F



C
3 Outdoor Equipment
AC2
AC1 - Conventional

Configuration


Cooling 1

For Cooling or Heat Pumps


(Single Stage)



AC2 - Conventional




Cooling 2




(Two Stage)



HP1 - Heat Pump 1




(Single Stage)



HP2 - Heat Pump 2




(Two Stage)



AC0 - No Cooling
4
Indoor Equipment
EL2
GA1 - Gas 1

Configuration


(Single Stage)

For Gas or Electric Heat

GA2 - Gas 2





(Two Stage)



EL1 - Electric 1




(Single Stage)



EL2 - Electric 2




(Two Stage)



FAN - Fan (No Heat)
5
Reversing Value Position
O
O

Selects “O” or “B” Setting

B


For heat pumps only
6 Wireless Radio
ON
On

Turns Wi-Fi Radio On/Off

Off
Swipe screen to unlock
PM
3. CONNECT to Wi-Fi
In order to connect to the homeowner’s Wi-Fi,
you will need the following:
The homeowner’s Wi-Fi
router access information.
If the homeowner is not available or does not want
to connect at this time, go to the last 2 pages.
Before You Begin
Access to the homeowner’s
smartphone.
Have the homeowner do the following:
If Homeowner is Available...
1. Download Sensi App

on their smartphone.
2. Make sure their Wi-Fi

router is turned on and

the Internet connection

is working properly.
3. Open Sensi App and

create homeowner

Sensi account.
4. On “Add Thermostat” screen,

select “Just Connect Wi-Fi”.
5. Follow the steps in the app to

establish a Wi-Fi connection.
6. Make sure the connection works

by adjusting the temperature

from the app screen.
Technical Support
TECHNICAL SUPPORT
888-605-7131
sensicomfort.com
The Sensi logo is a trademark of Emerson Electric Co.
The Wi-Fi connection process is designed so that any homeowner
familiar with a smartphone and router can complete the step
on their own.
You just need to leave two items behind:
Wi-Fi Connection Guide

(tear out next page)
Security Code Card

(included in the box with the thermostat)

Insert the Security Code Card into the pre-cut slots

in the Wi-Fi Connection Guide leave-behind.
If Homeowner is Not Available
XXXXXXXX
Dear Homeowner:
Your new Sensi thermostat has been successfully installed and
can now control your HVAC system.
In order to connect the Sensi thermostat to your Wi-Fi router
and enable remote access from your smartphone or tablet,
follow these simple steps:
Wi-Fi Connection Guide
1. Gather these items
Contractor Phone# ____________________
3. Open the App

and follow the

instructions

step by step.
2. Download Sensi App to your iOS or Android device
HOMEOWNER SUPPORT
888-605-7131
sensicomfort.com
Sensi Security Code Card
Touch here
to get started.
Your Network Password
XXXXXXXX
XXXXXXXX
Dear Homeowner:
Your new Sensi thermostat has been successfully installed and
can now control your HVAC system.
In order to connect the Sensi thermostat to your Wi-Fi router
and enable remote access from your smartphone or tablet,
follow these simple steps:
Wi-Fi Connection Guide
1. Gather these items
Contractor Phone# ____________________
3. Open the app

and follow the

instructions

step by step
2. Download Sensi App to your iOS or Android device
HOMEOWNER SUPPORT
888-605-7131
sensicomfort.com
Sensi Security Code Card
Touch here
to get started.
Your Network Password