Table of Contents
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Table of Contents
Related Manuals for Emerson Sensi ST75
Summary of Contents for Emerson Sensi ST75
- Page 1 PRO Installation Touch Wi-Fi Thermostat...
- Page 2 Designed by the pros for the pros There are a lot of choices when it comes to buying a thermostat, but only one combines 125 years of experience and the latest connected home technology to empower your customers to take control of their comfort from anywhere. We proudly connect you to a professional-grade thermostat that you can offer your customers with confidence and that will keep you connected with them even after the initial install.
- Page 3 Easy to install and connect Sensi is designed to install like a standard thermostat. It gives you the flexibility to connect to Wi-Fi at installation or let your customer connect it later using the Sensi app. MOBILE DEVICE COMPATIBILITY OPERATING SYSTEM COMPATIBILITY Android Amazon Fire...
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Page 4: Hvac System Compatibility
HVAC SYSTEM COMPATIBILITY SYSTEM TYPE COMPATIBILITY MODIFICATIONS Conventional heating and Requires a common cooling wire (c-wire) • Gas furnace • Air conditioner • Electric furnace • Boiler Heat only Requires a common • Gas furnace wire (c-wire) • Electric furnace •... - Page 5 What’s in the box? • Sensi Thermostat • Screws and Anchors • Wire Labels • Sensi Security Code (found on the back of the Welcome Guide) Items needed for Wi-Fi connection: • The homeowners compatible iOS or Android • Device with the Sensi app installed and registered •...
- Page 6 Installation 1. Install Sensi thermostat, referring to these terminal definitions, cross references and wiring diagrams as needed: SENSI CONVENTIONAL HEAT PUMP THERMOSTAT THERMOSTAT SYSTEM SYSTEM Power for heating, 24V RC, R Power for cooling, 24V C, X, B** Common wire, 24V 1st outdoor Y, Y1 1st stage cool...
- Page 9 2. After installation, configure the thermostat to the appropriate system type. Press “Menu” on the thermostat and refer to these menu options as needed: CONFIGURATION MENU ITEMS REFERENCE Menu item Default Options Screen Brightness Adjust resting state brightness with an option to turn off Nightlight Off / On Home Screen Content...
- Page 10 3. Once the thermostat is installed and properly configured, test the equipment by following these steps: • Turn on power to the system. • Fan Operation • If your system does not have a “G” terminal connection, skip to “Heating System” below. •...
- Page 11 • Heating System • Press the “Mode” button on the thermostat and select the “Heat” position. • Press the up arrow on the thermostat and adjust the setting to 1° above the current room temperature. The heating system should begin to operate and the thermostat display will turn red indicating heating on the screen.
- Page 12 • Auxiliary System (only for heat pumps with auxiliary) • Press the “Mode” button on the thermostat and select the “Aux” position. This bypasses the heat pump and runs auxiliary-only heat. • Press the up arrow on the thermostat and adjust the setting to 1°...
- Page 13 • Cooling System • Press the “Mode” button on the thermostat and select the “Cool” position. • Press the down arrow and adjust the setting to 1° below the current room temperature. The blower should come on immediately on high speed, followed by cold air circulation.
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Page 14: Troubleshooting
Troubleshooting SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION No Heat/ 1. Blown fuse or 1. Replace fuse or reset breaker No Cool/ tripped circuit 2. Turn switch to ON No Fan breaker 3. Replace door panel in proper (common 2. Furnace power position to engage safety problem) switch to OFF... - Page 15 SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION No Cool 1. Thermostat not 1. Set thermostat to Cool. set to Cool 2. Verify thermostat and system 2. Loose connection wires are securely attached. to thermostat 3. Diagnostic: Set Mode to Cool or system and lower setpoint below room 3.
- Page 16 SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION Furnace (Air The location of the Digital thermostats provide precise Conditioner) thermostat and/ control and cycle faster than older Cycles Too or the size of the mechanical models. The system turns Fast or Slow Heating System on and off more frequently, but runs may be influencing for a shorter time.
- Page 17 Connecting Sensi to Wi-Fi 1. Ask the homeowner to download the free Sensi app onto the their iOS or Android device. 2. Ask the homeowner to follow the prompts to create an account. 3. Once the homeowner has logged in, ask to use their device to connect the thermostat to the Wi-Fi.
- Page 18 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 VOLTAGE REQUIREMENTS TRANSFORMERS Do not use on circuits exceeding On two transformer systems, the specified voltage.
- Page 19 For Your Customer MAKE SURE TO LEAVE THE SENSI WELCOME GUIDE FOR YOUR CUSTOMER. It provides helpful instructions and information on the following: • Includes their Sensi Security Code for connecting to Wi-Fi • How to connect their Sensi thermostat to Wi-Fi (if this has not already been completed) or connect additional devices •...
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