Emerson SA11 Common Wire Kit for Sensi Wi-Fi Thermostats User Manual

1. Introduction

This manual provides detailed instructions for the installation and operation of the Emerson SA11 Common Wire Kit. This kit is designed to provide a common wire (C-wire) connection for Wi-Fi thermostats, such as Emerson Sensi Wi-Fi thermostats, in systems where a C-wire is not present. A C-wire is essential for powering Wi-Fi thermostats that require continuous power for features like Wi-Fi connectivity and LED displays.

The SA11 kit allows for the reconfiguration of existing thermostat wiring without the need to run new wires through your home, offering a practical solution for upgrading to smart thermostats.

2. Safety Information

WARNING: Always turn off power to your heating and cooling system at the circuit breaker or fuse box before beginning any installation or maintenance procedures. Failure to do so can result in electrical shock, property damage, or personal injury.

• Ensure all wiring is performed in accordance with local electrical codes and ordinances.
• This device operates on 24 Volts AC. Do not connect to higher voltage systems.
• If you are unsure about any part of the installation process, consult a qualified HVAC technician or electrician.
• Do not use this kit with 2-wire heating/cooling systems.

3. Package Contents

The Emerson SA11 Common Wire Kit package typically includes the following items:

• Emerson SA11 Common Wire Kit module
• Installation Guide
• Additional wiring (if applicable, for specific configurations)

Figure 3.1: Contents of the Emerson SA11 Common Wire Kit. This image displays the white rectangular module with multi-colored wires, a small bundle of additional wires, and the folded instruction manual.

4. Installation Guide

This section outlines the general installation process for the Emerson SA11 Common Wire Kit. Specific wiring configurations may vary based on your existing HVAC system. Refer to the included installation guide and online resources for detailed diagrams and video tutorials.

4.1. Before You Begin

1. Turn off Power: Locate your HVAC system's circuit breaker and turn off the power to both the furnace/air handler and the outdoor unit. Verify power is off at the thermostat by attempting to operate it.
2. Identify Wires: At your existing thermostat, note the color and terminal designation of each wire. Take a picture for reference.
3. Access HVAC Control Board: Open your furnace or air handler to access the control board where the thermostat wires connect.

4.2. Wiring the SA11 Kit

The SA11 kit works by re-purposing one of your existing wires (typically the G wire for fan control) to carry both the G signal and the C-wire power. The kit then splits these signals at the furnace control board.

1. Connect Kit Wires to Furnace Board:
   • Disconnect the existing thermostat wires from the furnace control board.
   • Connect the wires from the SA11 module to the corresponding terminals on your furnace control board. The SA11 module has five wires: R, C, Y, W, G. Match these to the R, C, Y, W, G terminals on your furnace board.
   • The existing thermostat wires (R, Y, W, G) will then connect to the corresponding terminals on the SA11 module.
2. Reconfigure Thermostat Wiring:
   • At the thermostat, the wire that was previously connected to the G terminal will now be connected to the C terminal of your new Wi-Fi thermostat.
   • The remaining R, Y, W wires connect to their respective terminals on the new thermostat.
3. Secure the Module: Mount the SA11 module inside the furnace/air handler using screws or double-sided mounting tape, ensuring it is not obstructing any moving parts or vents.

Figure 4.1: The Emerson SA11 Common Wire Kit module. This image shows the compact white module with five color-coded wires extending from it, ready for connection.

Note: This is a simplified overview. Always consult the detailed wiring diagrams provided with your specific kit and thermostat for accurate connections.

4.3. Post-Installation

1. Restore Power: Once all connections are secure and verified, restore power to your HVAC system at the circuit breaker.
2. Test System: Power on your Wi-Fi thermostat and follow its setup instructions. Test all heating, cooling, and fan functions to ensure proper operation.

5. Operating the System with SA11 Kit

The Emerson SA11 Common Wire Kit is a passive component that enables your Wi-Fi thermostat to receive continuous power. Once installed, the operation of your heating and cooling system is controlled directly by your Wi-Fi thermostat. Refer to your specific thermostat's user manual for operating instructions, programming schedules, and smart features.

The kit ensures that your thermostat has the necessary 24V AC power (C-wire) to function optimally, supporting features like Wi-Fi connectivity, backlighting, and smart home integrations without relying on battery power alone.

6. Maintenance

The Emerson SA11 Common Wire Kit is designed to be maintenance-free. Once properly installed, it requires no regular servicing. However, it is recommended to:

• Periodically inspect the wiring connections at both the furnace control board and the thermostat for any signs of loosening or corrosion.
• Ensure the module remains securely mounted within the furnace/air handler.
• If you experience issues with your thermostat's power or connectivity, first check the power supply to your HVAC system and then verify the SA11 kit's connections.

7. Troubleshooting

If you encounter issues after installing the SA11 Common Wire Kit, consider the following troubleshooting steps:

If problems persist after following these steps, it is recommended to contact Emerson customer support or a qualified HVAC professional.

8. Specifications

• Model: SA11
• Brand: Emerson
• Compatibility: Designed for use with Sensi Wi-Fi thermostats and Sensi Touch Wi-Fi thermostats. Not compatible with 2-wire systems.
• Voltage: 24 Volts AC
• Dimensions: Approximately 1.75 x 2.13 x 2 inches
• Weight: Approximately 2.39 ounces
• Included Components: Common wire kit module, installation guide
• Manufacturer: White-Rodgers
• UPC: 786710555640

9. Warranty Information

Specific warranty details for the Emerson SA11 Common Wire Kit are typically provided with the product packaging or can be found on the official Emerson/Sensi website. Generally, Emerson products come with a limited warranty covering defects in materials and workmanship for a specified period from the date of purchase. Please retain your proof of purchase for warranty claims.

For detailed warranty terms and conditions, please visit the Emerson or Sensi official support pages.

10. Customer Support

For technical assistance, troubleshooting, or warranty inquiries regarding your Emerson SA11 Common Wire Kit, please contact Emerson customer support:

• Website: Visit the official Sensi website (e.g., sensi.emerson.com/en-us/support) for FAQs, installation videos, and contact information.
• Phone: Refer to the contact information provided in your product packaging or on the official website for phone support hours.

When contacting support, please have your product model (SA11) and any relevant purchase information ready.