Emerson Sensi 1F87U-42WF Smart Thermostat Installation Manual
- October 30, 2023
- Emerson
Table of Contents
Emerson Sensi 1F87U-42WF Smart Thermostat
View all Emerson thermostat manual
Overview
- Home comfort control – Anytime. Anywhere.
- Intuitive app and hardware design validated by research and reviews
- Traditional look that covers 90% of existing thermostat footprints
- Extensive compatibility: heat, cool, heat pump, dual fuel
- No c-wire required in most cases (except HomeKit)
Features
- Remote app control
- Auto changeover
- Large backlit display
- Humidity control
- Usage reports in-app for
- heating, cooling, and fan run time
- Contractor branding on device and in-app
- Popular smart home platform integrations – Amazon Alexa, Google Assistant, Apple HomeKit, SmartThings and Wink
- Geofencing smart feature and flexible scheduling options for energy savings
- Multi thermostat control capable for light commercial applications
Sensi Smart Thermostat Comparison
Compatibility and common wire (c-wire) requirement
No common wire required
- Conventional heating and cooling systems
Common wire required
- Apple HomeKit
- Heat only or Cool only (2 wire)
- Heat pumps
Not compatible
- Millivolt systems
- External 24 VAC Transformer is an option
- Communicating systems
- Line voltage systems
- Accessory control
Terminal outputs
The common wire could be labeled “C”, “B” or “X” on the old thermostat. Please refer to the owner’s manual of the old thermostat.
What if I don’t have a common wire and need one?
There are a few options if the application does not have or will not allow the
pulling of a common wire (c-wire) through the wall.
-
Look for an unused wire in the thermostat cable bundle
Video: Using an extra, unused wire as a common wire -
Use the “G” (Fan wire)
Video: Using a g-wire (fan wire) as a common wire -
Install an Emerson Thermostat Common Wire Kit
Video: Using an Emerson Thermostat Common Wire Kit
Do I need a RC/RH jumper?
No jumpers required
- Sensi Thermostat has a built in RC/RH jumper, no need to field install a jumper
- If you have separate wires to RC and RH terminals (two transformer systems)
- Label the wires RC and RH separately and then clip the jumper wire on the back of the Sensi face plate.
RC/RH jumper location
- Sensi Thermostat has a jumper built-in on the back of the thermostat
- No jumpers are required when installing the Sensi Smart Thermostat
Heat pump jumper wires
- Some thermostats will may have additional jumpers installed
- Remove the jumper and label as shown below
Wiring
two transformer – conventional single-stage or two-stage systems
Quick tip: Thermostat wiring does not follow a standardized color code. Take a picture with your smart phone and label thermostat wires before removing old thermostat from the wall.
heat pumps single-stage or multi-stage systems
Quick tip: Thermostat wiring does not follow a standardized color code. Take a picture with your smart phone and label thermostat wires before removing old thermostat from the wall.
Heat pump wiring exceptions
Separate W2 and E Wires
- Both wires will be labeled W/E and attached to the same terminal.
B Terminal Wires
- “B” terminal can be used for more than one. Here is the solution to cross.
- If there is a wire on the “O” terminal, label the B wire C
- If there is no wire on the “O” terminal, label the B wire O/B
Terminal outputs
Note that Y2/ and W2/ are being used for wired humidification or dehumidification, respectively
System configuration
System Compatibility List – Humidity Control
- Heat only: Humidifier only
- Cool only: Dehumidifier only
- 1 stage heat, 1 stage cool: Humidifier and Dehumidifier
- 1 stage heat, 2 stage cool: Dehumidifier only*
- 2 stage heat, 1 stage cool: Humidifier only*
- 2 stage heat, 2 stage cool: None*
Note: if the staging on a 2 stage heat or 2 stage cool system can be handled by the furnace/air handler board, that will open up the Y2 or W2 terminal for hum/dehum use.
How to Set Up Humidity Control on the Sensi Thermostat
Installation
- Install humidifier/dehumidifier equipment
- Wire the whole-house humidifier to the Y2/* terminal
- Wire the whole-house or standalone dehumidifier to the W2/* terminal
- New menu items H AA and dH AA (Additional Accessory)
- For wired dehumidification, select OC (Optimal Comfort)
- For dehumidification through overcooling, select Od (Optimal Dehumidification)
- Depending on installed equipment, select the appropriate configuration
Connecting to Wi-Fi is simple
Connect with your customers – Anytime. Anywhere.
- Register your company at www.SensiRegistration.com
- Upload your logo which will be displayed in your customer’s phone
- During installation, enter your registered phone number in the Sensi app
- The Sensi app stores your contact information in your customer’s phone.
- When your customer needs service, you’re just a tap away.
- Also, if your customer receives a smart alert due to a system issue, your contact information will be included
Grow your business with a light commercial solution from Sensi
Sensi Multiple Thermostat Manager offers a simple, affordable solution for
property-wide comfort control, connected in one place.
Learn more and take a FREE test drive at
sensi.emerson.com/mtm
Learn more at emerson.com/sensipro
Sensi™
Smart Thermostat
1F87U-42WF Installation Training
Sensi Smart Thermostat 1F87U-42WF Installation Manual – Download [optimized]
Sensi Smart Thermostat 1F87U-42WF Installation Manual – Download
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Emerson Sensi 1F87U-42WF Smart Thermostat Installation Manual
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