Welcome to the T855 Thermostat Manual! This guide provides comprehensive instructions for installing, operating, and maintaining your Pro1 IAQ T855 thermostat. Designed for optimal performance, the T855 supports conventional and heat pump systems, offering 7-day programmable scheduling and battery or hardwire power options. Refer to this manual for troubleshooting, warranty details, and advanced customization features to ensure efficient HVAC control and energy savings.
1.1 Overview of the T855 Thermostat
The Pro1 IAQ T855 thermostat is a versatile and energy-efficient HVAC controller designed for both conventional and heat pump systems. It supports up to 2 heat and 2 cool stages for conventional systems, and up to 3 heat and 2 cool stages for heat pumps. The thermostat features a user-friendly interface with an LCD display, offering programmable scheduling options like 7-day, 5/1/1, or non-programmable modes. It can be powered by batteries or hardwired, ensuring flexibility during installation. The T855 also includes advanced settings for customization, such as temperature swing configuration, to optimize comfort and energy savings. Its universal sub-base allows easy mounting on walls or junction boxes, making it a reliable choice for residential and light commercial use.
1.2 Importance of the Manual for Users
The T855 manual is essential for users to understand and optimize their thermostat’s performance. It provides detailed instructions for installation, operation, and troubleshooting, ensuring safe and efficient use. The manual explains how to navigate advanced features like programmable scheduling and temperature swing settings. It also covers maintenance tips, such as replacing batteries and updating settings, to prevent system malfunctions. Additionally, the manual includes warranty information and customer support details, offering peace of mind. By following the guide, users can maximize energy savings, customize their comfort settings, and resolve issues quickly, making it a vital resource for all T855 thermostat owners.
Installation Tips for the T855 Thermostat
Select a location representative of room temperature, avoiding direct sunlight or drafts. Mount vertically or horizontally, ensuring level placement. Follow wiring diagrams carefully, and verify system compatibility before installation.
2.1 Choosing the Right Location
Choose a location that accurately represents the room temperature, avoiding areas with direct sunlight, drafts, or extreme temperatures. The thermostat should be at average human height for precise comfort control. Ensure it’s accessible for adjustments and programming. Avoid installing near windows, fireplaces, or radiators to prevent inaccurate readings. For optimal performance, the thermostat should be mounted on an interior wall, away from furniture or obstructions. Proper placement ensures consistent temperature monitoring and efficient HVAC operation, maintaining comfort and energy efficiency throughout your space.
2.2 Mounting Options (Vertical vs. Horizontal)
The T855 thermostat offers flexible mounting options to suit your installation needs. For vertical mounting, attach the sub-base to a wall or junction box, ensuring it is level. Horizontal mounting is also supported; place one screw on the left and one on the right for stability. Use the included hardware and ensure the device is securely fastened. Proper alignment is crucial for accurate temperature sensing and smooth operation. Refer to the installation guide for detailed steps, and verify the thermostat is level before finalizing the mount. This ensures reliable performance and ease of use.
2.3 Wiring Connections and Setup
Proper wiring is essential for the T855 thermostat to function correctly. Connect the wires to the appropriate terminals (R, W, Y, G, C, and O/B) as per your system type, whether it’s conventional or heat pump. Use the universal sub-base, compatible with most HVAC systems, and ensure all connections are secure. Incorrect wiring can lead to system damage or malfunctions. Refer to the wiring diagram in the manual for specific configurations. Always turn off the power before making connections to avoid risks. After wiring, test the system to ensure proper operation and adjust settings as needed for optimal performance and safety.
Operating the T855 Thermostat
Mastering the T855 thermostat is straightforward. It offers intuitive controls for heating, cooling, and fan settings, ensuring precise temperature management. Users can easily switch between modes, adjust fan speeds, and set temperature preferences for optimal comfort and energy efficiency.
3.1 Understanding Heating and Cooling Modes
The T855 thermostat allows you to seamlessly switch between heating and cooling modes to maintain your desired comfort level. In Heat mode, the thermostat activates your heating system to warm your space. In Cool mode, it engages the cooling system to lower the temperature. Additionally, you can select Off to deactivate both heating and cooling systems. The thermostat also features a Fan option for continuous airflow, even when heating or cooling isn’t active. Understanding these modes ensures efficient operation and energy savings. Proper system configuration is essential to avoid issues like the thermostat blowing cold air in heat mode or failing to shut off.
3.2 Stages of Operation (First and Second Stage)
The T855 thermostat operates in two stages to efficiently manage heating and cooling. The first stage activates when the temperature deviates from the set point by the swing setting (e.g., 0.8°F). If the temperature continues to drop or rise beyond this threshold, the second stage engages, providing additional heating or cooling. This dual-stage operation ensures consistent comfort while minimizing energy usage. The second stage turns off once the temperature returns within the swing range, optimizing system performance and reducing wear on your HVAC equipment. Proper configuration of these stages is crucial for reliable operation.
3.3 Temperature Settings and Swing Configuration
The T855 thermostat allows precise control over temperature settings, with a default swing setting of 0.8°F for heating. This means the first stage activates when the temperature drops below the set point by 0.8°F. The second stage engages at twice the swing setting (1.6°F below the set point) for enhanced heating. For cooling, the second stage turns on when the temperature rises by 1.6°F above the set point and turns off once it drops by 0.8°F. Adjusting the swing setting can optimize comfort and energy efficiency, but narrower settings may cause more frequent system cycling. Proper configuration ensures balanced performance and temperature consistency. Always refer to the manual for customization guidance.
Programming Features of the T855
The T855 thermostat offers flexible programming features, including 7-day, 5/1/1, and non-programmable scheduling options, with advanced settings for temperature customization and energy efficiency.
4.1 Scheduling Options (7-Day, 5/1/1, Non-Programmable)
The T855 thermostat offers versatile scheduling options to suit various lifestyles. The 7-day schedule allows different settings for each day, providing maximum flexibility. The 5/1/1 option enables a consistent weekday schedule with separate weekend settings. For simplicity, the non-programmable mode lets you set a consistent temperature without daily changes. Each option ensures efficient energy management, allowing you to customize comfort levels while optimizing energy savings. Whether you prefer detailed control or straightforward operation, the T855 accommodates your needs with ease.
4.2 Advanced Settings for Customization
The T855 thermostat offers advanced settings to tailor your comfort experience. Adjust the temperature swing to minimize fluctuations, set optimal heating and cooling limits, and customize fan operation for consistent airflow. Energy-saving features allow you to balance comfort and efficiency. Advanced settings also include humidity control and system configuration options, ensuring the thermostat works seamlessly with your HVAC system. These features provide precise control over your environment, enabling you to customize settings according to your preferences and lifestyle. Explore the menu to unlock full customization potential and optimize your home’s climate control effectively.
Troubleshooting Common Issues
Identify and resolve issues like thermostat not turning on/off, incorrect system configuration, or wiring problems. Check battery status and ensure proper setup for optimal performance. Refer to manual for solutions.
5.1 Thermostat Not Turning On or Off
If your T855 thermostat isn’t turning on or off, check the power source. Ensure batteries are replaced if low, and connections are secure. Verify system configuration matches your HVAC setup. Loose or incorrect wiring can cause malfunctions. Also, ensure temperature settings are correctly configured. If issues persist, restart the thermostat or consult the troubleshooting section for advanced solutions. Always refer to the manual for detailed guidance on resolving operational issues effectively.
5.2 Incorrect System Configuration and Wiring Problems
Incorrect system configuration or wiring issues can lead to thermostat malfunctions. Ensure the thermostat is set to the correct mode (heating or cooling) for your HVAC system. Verify wiring connections match the system type, as improper setup can cause operational failures. For heat pump systems, ensure the thermostat is configured correctly to avoid issues. If problems persist, consult the wiring diagram in the manual or contact a professional. Always double-check connections and settings to maintain optimal performance and avoid system damage.
Maintenance and Battery Information
Replace AA batteries promptly when the low battery icon appears to prevent system issues. Clean the thermostat regularly for optimal performance and reliability. Ensure proper maintenance to extend lifespan.
6.1 Replacing Batteries and Low Battery Warnings
The T855 thermostat uses two AA batteries for power. When the battery icon appears on the display, replace the batteries immediately to avoid system shutdown. Failure to replace batteries within 21 days will result in the thermostat becoming inoperable. Remove the old batteries from the back panel, insert new ones ensuring correct polarity, and close the compartment securely. Proper battery maintenance ensures continuous operation and prevents temperature control issues. Always use high-quality alkaline batteries for optimal performance and longevity of your thermostat.
6.2 Regular Maintenance Tips for Optimal Performance
Regular maintenance ensures your T855 thermostat operates efficiently. Clean the display screen gently with a soft cloth to avoid dust buildup. Check wiring connections periodically for loose or damaged wires. Ensure the thermostat is mounted securely on the wall or junction box. Verify that the location reflects accurate room temperature, avoiding direct sunlight or drafts. Inspect the backplate for proper alignment and tighten screws if necessary. Update schedules or settings as needed to maintain energy efficiency. Replace batteries promptly when the low-battery warning appears. These simple steps will enhance performance, extend lifespan, and ensure reliable temperature control year-round.
Warranty and Support
The T855 thermostat is backed by a 5-year warranty. Register your product online or by mail for coverage. Contact Pro1 Technologies at 888-776-1427 or visit www.pro1iaq.com for assistance.
7.1 Warranty Registration Process
To activate your T855 thermostat’s 5-year warranty, complete the registration process online or by mail. Visit www.pro1iaq.com, select “Warranty Registration,” and fill out the form with your product details. Alternatively, mail the completed registration form to Pro1 Technologies at P.O. Box 3377, Springfield, MO 65808-3377. Ensure all required information is accurate to avoid delays. Registration must be completed within 30 days of installation for warranty validation. For assistance, contact customer support at 888-776-1427.
7.2 Contact Information for Customer Support
For any inquiries or assistance with your T855 thermostat, contact Pro1 Technologies customer support. Their office is located at P.O. Box 3377, Springfield, MO 65808-3377. You can reach them toll-free at 888-776-1427. Customer support is available Monday through Friday, 9 AM to 6 PM Eastern Time. Visit their website at www.pro1iaq.com for additional resources, including downloadable manuals and troubleshooting guides. Their team is ready to address any questions or concerns to ensure your thermostat operates efficiently.
The T855 thermostat manual provides a comprehensive guide to installing, operating, and maintaining your Pro1 IAQ T855 thermostat. By following the instructions, you can optimize its performance, troubleshoot common issues, and customize settings for energy efficiency. For further assistance, contact Pro1 Technologies at 888-776-1427 or visit their website. Regularly reviewing this manual ensures you maximize your thermostat’s capabilities and enjoy consistent comfort. Thank you for choosing the T855 thermostat for your HVAC needs.