Emerson ST25 - User Manual

This Installation Manual covers the Sensi Lite smart thermostat, guiding users through setup, wiring, Wi-Fi connection, and basic configuration for models like the ST25 series or 1F76U-22WFB. The guide emphasizes tools, power management, app integration, troubleshooting common issues (like connectivity or HVAC activation failures), and essential steps such as wire labeling, battery installation, and system compatibility checks–including diagrams for conventional and heat pump setups.

Page 1 – Installation Guide Overview
Page 2 – Sensi App Account Setup
Page 3 – Initial Thermostat Setup in App
Page 4 – Removing Old Thermostat and Wiring Documentation
Page 5 – Physical Thermostat Installation Procedure
Page 6 – Wi-Fi Connection and Registration
Page 7 – Troubleshooting Installation Issues
Page 8 – Thermostat Configuration and Access
Page 9 – Multi-Thermostat Setup and Support
Page 10 – HVAC Wiring Diagrams

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SENSI

™

LITE SMART THERMOSTAT

Installation guide

Models: 1F76U-22WFB series, ST25 series
Version: February 2023

R-5664

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About this manual

Brand: Emerson
Model: ST25
Document type: User Manual
Category: Thermostat
Language(s): English
Pages: 10
File size: 1.3 MB
Format: PDF

Summary

Page 1 - Installation Guide Overview

Details for installing the Sensi Lite Smart Thermostat for the 1F76U-22WFB series and ST25 series models.

Page 2 - Sensi App Account Setup

Instructions for downloading the Sensi app, creating an account, and setting up Wi-Fi credentials for thermostat installation.

Page 3 - Initial Thermostat Setup in App

Steps for adding a new thermostat to the application, identifying model series, and selecting whether the unit is newly installed or already mounted on the wall.