Honeywell TH6220D1028 Installer Manual: A Comprehensive Guide
This manual details the installation and operation of the Honeywell FocusPRO TH6220D thermostat‚ suitable for 1H/1C or 2H/2C systems. It provides guidance for professionals and includes crucial safety precautions‚ wiring diagrams‚ and configuration instructions for optimal performance.
The Honeywell TH6220D1028 is a programmable thermostat designed for reliable and accurate temperature control within residential and light commercial environments. As part of the FocusPRO series‚ it offers a user-friendly interface combined with advanced features to optimize comfort and energy efficiency. This thermostat is specifically configured for systems utilizing either one or two heating stages and one or two cooling stages (1H/1C or 2H/2C)‚ providing flexibility for various HVAC setups.
This installer manual serves as a comprehensive resource for professionals tasked with the installation‚ configuration‚ and troubleshooting of the TH6220D1028. It details essential safety precautions‚ necessary tools‚ and a thorough system compatibility check to ensure a successful installation. Understanding the terminal designations and utilizing the provided wiring diagrams are crucial for proper connection to HVAC equipment. The manual also guides users through the initial configuration process‚ including system type selection and fan control settings‚ ultimately enabling personalized temperature schedules for wake‚ leave‚ return‚ and sleep periods.
Always verify product suitability for your application by reviewing the ratings detailed within this booklet (page 17‚ as referenced in available documentation). Proper testing post-installation is also vital to confirm correct operation.
Key Features and Benefits
The Honeywell TH6220D1028 thermostat boasts several key features designed to enhance user experience and optimize HVAC system performance. Its programmable functionality allows for customized temperature schedules‚ adapting to daily routines and potentially reducing energy consumption by up to 33% when utilizing the pre-set settings. The intuitive interface simplifies operation‚ making it easy to adjust settings and monitor temperatures.
This thermostat’s compatibility with both 1H/1C and 2H/2C systems offers installation flexibility. Accurate temperature control ensures consistent comfort throughout the space. The FocusPRO series is known for its reliability and durability‚ providing long-term performance. Furthermore‚ the TH6220D1028 facilitates easy access to online resources and support materials‚ aiding in troubleshooting and maintenance.
Benefits extend beyond comfort and convenience; the programmable features contribute to significant energy savings. The clear display and straightforward controls minimize user frustration. Installation is streamlined with detailed wiring diagrams and instructions‚ reducing installation time and potential errors. This thermostat represents a cost-effective solution for modern heating and cooling needs.

Installation Preparation
Before installing the TH6220D1028‚ ensure power is disconnected to prevent electrical shock. Verify system compatibility and gather necessary tools for a safe and efficient installation process.
Safety Precautions & Warnings
Prior to commencing any installation procedures‚ it is absolutely critical to disconnect the power supply to the HVAC system at the breaker panel or fuse box. Failure to do so presents a significant risk of electrical shock or severe injury. Always verify the power is off using a reliable voltage tester before handling any wiring.
This thermostat is designed for use with low-voltage (24VAC) systems only. Do not connect it to line voltage (120VAC or 240VAC) as this will cause irreparable damage and potentially create a fire hazard. Ensure all wiring connections are secure and comply with local electrical codes. Improper wiring can lead to equipment malfunction or damage.
Read and understand all instructions thoroughly before beginning the installation. If you are unfamiliar with HVAC systems or electrical wiring‚ it is strongly recommended to consult a qualified technician. Keep this manual readily available for future reference and troubleshooting. Always test for proper operation after installation‚ as outlined in the manual‚ to confirm correct functionality and safety.
Caution: Incorrect installation can void the product warranty and may result in hazardous conditions. Always verify ratings to ensure product suitability for your application.
Tools Required for Installation
For a successful and safe installation of the Honeywell TH6220D1028 thermostat‚ having the correct tools readily available is essential. A Phillips head screwdriver is crucial for securing the thermostat base and wiring connections. A flathead screwdriver may also be needed for certain terminal screws.
A wire stripper/cutter is vital for preparing the thermostat wires‚ ensuring clean and accurate connections. A voltage tester is non-negotiable; it’s used to verify the power is completely disconnected before any wiring work begins‚ preventing electrical shock. Pliers can assist with bending and manipulating wires for neat routing.
A small level will ensure the thermostat is mounted straight‚ contributing to a professional appearance and accurate temperature readings. A drill with appropriate drill bits may be necessary for creating mounting holes‚ depending on the wall material. A pencil is useful for marking hole locations. Finally‚ wire labels are highly recommended for clearly identifying each wire‚ simplifying the wiring process and troubleshooting.
Optional‚ but helpful: a digital multimeter for advanced troubleshooting and a fish tape for running wires through walls.
System Compatibility Check
Before commencing installation of the Honeywell TH6220D1028‚ verifying system compatibility is paramount. This thermostat is designed for conventional (1H/1C) and heat pump (2H/2C) systems‚ but confirming your HVAC setup is crucial. Carefully examine your existing thermostat wiring.
Identify the number of wires present. The TH6220D requires a common (C) wire for consistent power. Systems lacking a C-wire may necessitate a C-wire adapter kit‚ sold separately. Determine if your system utilizes a single-stage or multi-stage heating and cooling configuration. The TH6220D supports up to two stages for both heating and cooling.
Check the voltage of your HVAC system. The thermostat operates on 24VAC. Ensure your system provides this voltage. Confirm whether your heat pump utilizes auxiliary heat. Proper configuration of auxiliary heat settings is vital for efficient operation. Refer to page 17 of the booklet to verify product suitability for your application.
If unsure about compatibility‚ consult a qualified HVAC technician. Incorrect installation can damage your equipment or the thermostat itself.

Wiring and Connections
Proper wiring is essential for correct thermostat function. This section details terminal designations‚ provides wiring diagrams for 1H/1C and 2H/2C systems‚ and guides connecting to HVAC equipment.
Identifying Terminal Designations
Understanding the terminal designations on both the thermostat backplate and your HVAC system’s control board is paramount for a successful installation. The Honeywell TH6220D1028 utilizes standard terminal labels‚ but verifying compatibility with your existing wiring is crucial before proceeding.
Key terminals include: R (Power – typically 24VAC)‚ C (Common – provides a return path for power‚ often required for consistent operation)‚ W (Heat – activates the heating system)‚ Y (Cool – activates the cooling system)‚ and G (Fan – controls the blower motor). For 2H/2C systems‚ you’ll also find W2 (Second Stage Heat) and Y2 (Second Stage Cool) terminals.
Carefully examine your existing thermostat wiring. Note the color of each wire and its corresponding terminal. Do not rely solely on wire color‚ as wiring standards can vary. Always double-check against the HVAC system’s wiring diagram. Incorrect wiring can lead to system malfunction or damage. The backplate clearly labels each terminal‚ ensuring accurate connections. If unsure‚ consult a qualified HVAC technician before proceeding with the installation.
Wiring Diagrams for Different System Types (1H/1C‚ 2H/2C)

The Honeywell TH6220D1028 accommodates both 1H/1C (single-stage heating/cooling) and 2H/2C (two-stage heating/cooling) systems. Utilizing the correct wiring diagram is essential for proper functionality. Incorrect wiring can cause system failures or damage to components.
For 1H/1C systems: Connect the R wire to the R terminal‚ C to C‚ W to W‚ Y to Y‚ and G to G. This configuration provides basic heating and cooling control. Ensure a secure connection for each wire.
For 2H/2C systems: In addition to the 1H/1C connections‚ connect the W2 wire to the W2 terminal and the Y2 wire to the Y2 terminal. This enables two-stage operation‚ offering increased comfort and efficiency. Refer to the detailed wiring diagrams included within the installation guide or available online for visual clarification. Always disconnect power before making any wiring connections. Double-check all connections before restoring power to the system;
Connecting the Thermostat to HVAC Equipment
After completing the wiring based on your system type (1H/1C or 2H/2C)‚ carefully connect the thermostat to your HVAC equipment. Ensure all power is disconnected at the breaker box before proceeding – this is a critical safety precaution to prevent electrical shock or equipment damage.
Mount the thermostat baseplate securely to the wall‚ ensuring it’s level. Gently tuck the wires into the wall opening‚ avoiding any pinching or strain. Attach the thermostat body to the baseplate‚ verifying a snug fit.
Restore power to the HVAC system at the breaker box. The thermostat should power on and initiate the setup process. Always test for proper operation after installation‚ verifying that heating and cooling cycles engage correctly. If issues arise‚ re-check wiring connections and consult the troubleshooting section of this manual or the online resources for assistance. Proper connection guarantees efficient and reliable operation.
Thermostat Configuration
The TH6220D allows customization of system type‚ fan control‚ and temperature schedules. Configure settings for heat pump or conventional systems‚ optimizing comfort and energy efficiency for your specific needs.
Setting the System Type (Heat Pump‚ Conventional)
Properly configuring the system type is crucial for accurate temperature control and efficient operation of your Honeywell TH6220D1028 thermostat; The thermostat supports both heat pump and conventional (furnace and air conditioner) heating and cooling systems. To select the appropriate system type‚ access the configuration menu through the thermostat’s interface.
Navigate to the “System Type” setting‚ typically found within the installer or advanced settings. You will be presented with options for “Heat Pump” and “Conventional.” Carefully select the option that corresponds to your home’s HVAC system. Incorrect selection can lead to improper heating or cooling‚ reduced efficiency‚ and potential equipment damage.
For heat pump systems‚ the thermostat will manage both heating and cooling using the heat pump‚ and may also incorporate auxiliary heat for supplemental warmth during colder temperatures. Conventional systems utilize a separate furnace for heating and an air conditioner for cooling. Ensure the wiring is correct for the selected system type‚ referencing the wiring diagrams provided in this manual. After setting the system type‚ test the thermostat’s operation to confirm proper functionality.
Configuring Fan Control Settings
The Honeywell TH6220D1028 thermostat offers several fan control options to optimize comfort and air circulation. These settings allow you to customize how the fan operates independently of the heating or cooling system; Access the fan control settings through the thermostat’s menu‚ typically located within the “System” or “Fan” options.
You can choose from settings like “Auto‚” “On‚” and potentially “Circulate.” “Auto” mode runs the fan only when the heating or cooling system is active. “On” mode keeps the fan running continuously‚ providing constant air circulation. The “Circulate” setting periodically runs the fan for a set duration‚ even when heating or cooling isn’t needed‚ to improve air mixing and temperature consistency.
Selecting the appropriate fan control setting depends on your preferences and home’s needs. Continuous fan operation can improve air quality and reduce temperature stratification‚ but it also consumes more energy. Experiment with different settings to find the optimal balance between comfort and efficiency. Refer to the thermostat’s display for confirmation of the selected fan control mode.
Programming Temperature Schedules (Wake‚ Leave‚ Return‚ Sleep)
The Honeywell TH6220D1028’s programmable scheduling feature allows for customized temperature settings throughout the day‚ maximizing comfort and energy savings. The thermostat utilizes four primary periods: Wake‚ Leave‚ Return‚ and Sleep. Each period can be individually programmed with a specific start time and desired temperature.
“Wake” sets the temperature for when you typically wake up. “Leave” adjusts the temperature while you’re away from home‚ often set for energy conservation. “Return” establishes the temperature for when you come back‚ ensuring a comfortable environment upon arrival. Finally‚ “Sleep” sets a cooler or warmer temperature for nighttime comfort.
To program these schedules‚ access the “Program” menu on the thermostat. You’ll be prompted to set the time and temperature for each period. Pre-set settings are available and recommended‚ potentially reducing heating/cooling expenses by up to 33%. You can customize these pre-sets to align with your lifestyle. Ensure accurate time settings for proper schedule execution. Regularly review and adjust schedules as needed to maintain optimal comfort and efficiency.

Advanced Settings & Troubleshooting
This section covers pre-set settings for energy savings‚ resolving common installation issues‚ and resetting the thermostat to factory defaults‚ ensuring optimal performance and user control.

Understanding Pre-Set Settings and Energy Savings
The Honeywell TH6220D1028 thermostat offers pre-set temperature schedules designed to maximize energy efficiency and reduce heating and cooling expenses. These settings‚ carefully calibrated by Honeywell‚ provide a comfortable environment while minimizing energy consumption. It’s recommended to utilize these pre-programmed schedules as a starting point‚ tailoring them to individual preferences and occupancy patterns.
The pre-set schedule typically includes four distinct periods: Wake‚ Leave‚ Return‚ and Sleep. The ‘Wake’ period allows you to set a comfortable temperature for when you first awaken. ‘Leave’ adjusts the temperature while you are away from home‚ conserving energy. Upon your return‚ the ‘Return’ period restores a comfortable climate. Finally‚ the ‘Sleep’ period lowers the temperature for overnight energy savings.
According to available information‚ utilizing these pre-set settings can potentially reduce heating and cooling costs by up to 33%. However‚ individual savings will vary depending on factors such as climate‚ insulation‚ and personal temperature preferences. Users can easily customize these settings to align with their specific needs and lifestyle‚ further optimizing energy savings and comfort. Regularly reviewing and adjusting the schedule based on seasonal changes and occupancy patterns is also recommended.
Troubleshooting Common Installation Issues
During the installation of the Honeywell TH6220D1028 thermostat‚ several common issues may arise. One frequent problem is incorrect wiring‚ leading to the system not responding or operating improperly. Always double-check the wiring diagram against your specific HVAC system’s terminal designations before powering on the thermostat.

Another common issue is a lack of power to the thermostat. Verify that the power supply is active and that the thermostat is receiving voltage. Check the circuit breaker and ensure all connections are secure. If the display remains blank‚ a faulty transformer or wiring issue may be present.
Incorrect system type configuration can also cause problems. Ensure the thermostat is set to the correct system type (heat pump or conventional) as specified by your HVAC equipment. Finally‚ if the thermostat doesn’t seem to be communicating with the HVAC system‚ verify compatibility and check for any obstructions or loose connections. Always disconnect power before attempting any troubleshooting steps to avoid electrical shock or equipment damage. Refer to the full manual for detailed troubleshooting guidance.
Resetting the Thermostat to Factory Defaults
Occasionally‚ it may become necessary to reset the Honeywell TH6220D1028 thermostat to its factory default settings. This is particularly useful if you’re experiencing persistent configuration issues or preparing the thermostat for a new installation. Resetting clears all personalized settings‚ returning the thermostat to its original‚ out-of-the-box state.
The process for resetting the TH6220D1028 typically involves a specific sequence of button presses. While the exact procedure can vary slightly‚ it generally includes holding down a combination of the ‘Menu’ and ‘Down’ or ‘Up’ buttons simultaneously for a sustained period – usually around 5-10 seconds. The display should indicate that the reset is in progress.
Be aware that resetting to factory defaults will erase all programmed schedules‚ temperature preferences‚ and any custom settings you’ve configured. You will need to re-enter these settings after the reset is complete. Always consult the complete installation manual for the precise reset instructions applicable to your specific model and software version. This ensures a smooth and successful restoration to factory settings.

Manual Specifications & Resources
The Honeywell TH6220D boasts 80 pages of detailed information‚ covering product specifications‚ installation guidance‚ and troubleshooting tips. Online resources and support are readily available.
Product Specifications (TH6220D)
The Honeywell FocusPRO TH6220D thermostat is designed for versatile HVAC system control‚ accommodating both residential and commercial applications. It’s specifically engineered for systems utilizing 1 or 2 heating stages and 1 or 2 cooling stages‚ offering adaptable temperature regulation. The thermostat operates on 24VAC power‚ ensuring compatibility with standard HVAC setups.
Key features include a large‚ easy-to-read backlit display‚ providing clear visibility in various lighting conditions. Programmable 7-day schedules allow for customized comfort and energy savings‚ with four periods per day (Wake‚ Leave‚ Return‚ Sleep). The thermostat supports non-volatile memory‚ retaining programmed settings even during power outages.
Regarding physical characteristics‚ the TH6220D is designed for wall mounting and includes a battery compartment for backup power. It’s crucial to verify compatibility with your specific system before installation‚ referencing the ratings detailed within the accompanying documentation. Proper operation should always be tested post-installation to guarantee optimal performance and prevent potential issues.
Accessing the Online Manual & Support
For comprehensive assistance with your Honeywell TH6220D1028 thermostat‚ a wealth of resources is readily available online. Honeywell’s official website provides a downloadable PDF version of the complete installation manual‚ offering detailed instructions and troubleshooting guidance. This digital version allows for easy searching and printing of specific sections.
Beyond the manual‚ Honeywell’s support portal features frequently asked questions (FAQs)‚ video tutorials‚ and a dedicated support forum where users can exchange information and solutions. Direct contact with Honeywell’s customer support team is also possible via phone or email‚ providing personalized assistance for complex issues.
Furthermore‚ numerous online communities and HVAC forums host discussions related to the TH6220D‚ offering valuable insights from experienced installers and users. Always ensure you are referencing official Honeywell documentation or reputable sources for accurate information. Regularly checking Honeywell’s website for updates and revisions to the manual is recommended to stay informed about the latest features and best practices.
