Sensi Smart Thermostat Installation Guide
STOP
This section contains a STOP symbol, indicating a critical point or warning.
Download the Sensi app before you begin.
This document is not meant to be used independently or to replace the step-by-step installation procedure found only in the Sensi app. The app is required for installation to ensure proper configuration and enable Wi-Fi control of your thermostat.
The free Sensi mobile app is available on the App Store™ and Google Play™. Simply search for “Sensi” to download and get started.
Important Note: All system types require a common wire (c-wire).
Easy start guide
CREATE YOUR ACCOUNT.
Open the Sensi app on your device and follow the prompts to create an account, using a valid email address. Your Sensi account can only be linked to one email address, but you can share your account information across devices so your whole family can have access.
INSTALL YOUR THERMOSTAT.
The Sensi app will walk you through removing your old thermostat from the wall, labeling your existing wires, and installing your new Sensi thermostat.
CONNECT TO WI-FI.
After installation, the app will guide you through connecting your new thermostat to your home Wi-Fi network. Remember to have your Wi-Fi network name, password, and Sensi password ready.
REGISTER YOUR THERMOSTAT.
Finally, the app will walk you through registration so you can start controlling your home comfort anytime, anywhere.
For detailed instructions, visit sensi.emerson.com/install.
What's in the box?
- Sensi Thermostat
- Screws and Anchors
- Wire Labels
- Welcome Guide
The package includes the Sensi Thermostat unit, mounting hardware (screws and anchors), wire labels for easy identification during installation, and a welcome guide.
Here's what you'll need.
Things you'll definitely need:
- Medium Phillips screwdriver
- Compatible iOS or Android device with the Sensi app installed
- Your email address
- Your Wi-Fi network with 802.11n 2.4 GHz band (Sensi thermostats cannot connect to 5 GHz band networks), Wi-Fi network name (SSID), and password
Things you might need:
- Needle-nose pliers
- Drill with 3/16" bit
- Wire stripper
You're just a few steps away from complete comfort control. Never installed a thermostat before? We've got you covered. The Sensi™ Touch Smart Thermostat was designed for a quick and easy DIY installation. The Sensi app provides step-by-step instructions and helpful videos to get you up and running in no time.
Compatibility
The Sensi thermostat works with HVAC equipment in most homes and is compatible with most mobile devices and smart home platforms.
MOBILE DEVICE COMPATIBILITY
| OPERATING SYSTEM | COMPATIBILITY |
|---|---|
| iOS 10.0 or later | Yes |
| Android 5.0 or later | Yes |
| Amazon Fire | Yes |
SMART HOME PLATFORM COMPATIBILITY
Please refer to sensi.emerson.com for the most up-to-date smart home information.
ROUTER COMPATIBILITY
| ROUTER TYPE | COMPATIBILITY |
|---|---|
| Single-band router with 2.4 GHz band | Yes* |
| Dual-band router with 2.4 GHz & 5.0 GHz bands | Yes* |
| Single-band router with 5.0 GHz band | No |
* Sensi thermostats require an 802.11n 2.4 GHz Wi-Fi network and are compatible with most residential Wi-Fi networks, however there are some known incompatible routers. Visit sensi.emerson.com/support and search "router compatibility” for a list of known incompatible routers.
HVAC SYSTEM COMPATIBILITY
| SYSTEM TYPE | COMPATIBILITY | MODIFICATIONS |
|---|---|---|
| Conventional heating and cooling • Gas furnace • Air conditioner • Electric furnace • Boiler |
Yes | Requires a common wire (c-wire) |
| Heat only • Gas furnace • Electric furnace • Boiler |
Yes | Requires a common wire (c-wire) |
| Cool only • Air conditioner |
Yes | Requires a common wire (c-wire) |
| Heat pump | Yes | Requires a common wire (c-wire) |
| Communicating proprietary systems | No | Needs standard HVAC wiring |
| Line voltage | No | Requires low voltage (20-30VAC) |
| Millivolt systems | No | Requires 20-30VAC |
Energy efficiency made simple.
ENERGY STAR® is the simple choice for energy efficiency. Save energy, save money, and protect the environment with the ENERGY STAR® certified Sensi thermostat.
Warnings
INSTALLER INFORMATION
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY AND/OR PROPERTY DAMAGE.
WARNING: OUT OF PHASE TRANSFORMERS
On two transformer systems, the transformers MUST be in phase. Measure the voltage across RC and RH. If more than 12 Volts AC is present between RC and RH, then the transformers are NOT in phase. To correct this condition, reverse the secondary low voltage connections at either the Heating or Cooling transformer.
VOLTAGE REQUIREMENTS
Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard. Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code.
CAUTION: E5 Alert
If "Call For Service" is displayed on your Sensi thermostat, and E4 or E5 appears where the room temperature should be displayed or the backlight is flashing, please call our support team immediately at 888.605.7131.
ATTENTION: MERCURY NOTICE
This product does not contain mercury. However, this product may replace a product that contains mercury. Mercury and products containing mercury must not be discarded in household trash. Refer to thermostat-recycle.org for location to send product containing mercury.
FOR CALIFORNIA RESIDENTS: WARNING:
This product contains a chemical known to the state of California to cause cancer and birth defects and other reproductive harm.
Need some help?
Visit sensi.emerson.com/support for access to support articles, instructional downloads, and comprehensive support videos. Our highly-trained Sensi Support Team is available seven days a week.
Visit: www.sensi.emerson.com
The Emerson logo is a trademark and service mark, and the Sensi logo is a trademark of Emerson Electric Co.
Document identifier: 0037-7649005
Sensi - The Best Smart Thermostat | Sensi US
Home - Thermostat Recycling Corporation (TRC)
