Aprilaire Ventilation Controller Manual⁚ An Overview
This manual provides a comprehensive guide to the Aprilaire ventilation controller, covering the 8120 series. It includes safety and operating instructions, warranty information, installation, and setup details for models like the 8120X. The controller helps maintain fresh indoor air quality.
Aprilaire ventilation controllers are designed to manage fresh air intake in homes, ensuring optimal indoor air quality. These controllers, particularly the 8120 series, integrate with HVAC systems to provide controlled ventilation. They use measurements of outdoor temperature and indoor humidity, alongside user-adjustable timer settings, to operate effectively. The controller’s function is to introduce fresh air while preventing excessively high indoor humidity levels. The controller prevents ventilation in extreme high or low temperatures and has an upper limit of 55% RH when the outdoor temperature exceeds 50°F. These devices also offer different operating modes such as “Code” and “Comfort,” allowing users to customize ventilation to their specific needs. The Aprilaire ventilation controller helps reduce the stuffy effects of trapped air by metering in fresh air. It is crucial to follow the installation instructions to ensure proper performance;
Key Features of the 8120 Series Controllers
The Aprilaire 8120 series controllers are known for their advanced capabilities in managing home ventilation. Key features include digital display, offering easy access to settings and real-time information. The controllers integrate outdoor temperature and indoor humidity sensors to adjust ventilation based on environmental conditions. An essential feature is the ability to prevent high humidity levels, ensuring that ventilation does not contribute to discomfort. The 8120 series offers multiple operating modes, including Code and Comfort, allowing for customized ventilation settings. These controllers can automatically adjust ventilation based on user-defined time settings. Additionally, the controllers feature a test mode for verifying proper operation after setup. They also have safety features that prevent ventilation during extreme temperatures, and these devices are designed to work with various HVAC systems. The 8120 series also includes options for heat pump or furnace configurations.
Installation Guide for the 8120X Model
The installation of the Aprilaire 8120X ventilation controller involves several key steps. Start by mounting the controller to the return ductwork, ensuring it’s not directly in the path of outdoor air. Use the provided screws to secure it in place. If installing in a closet return plenum, utilize the duct board mounting bracket. Next, install the outdoor temperature sensor in the fresh air inlet hood, using metal foil tape to secure it. A 3/8-inch diameter hole is required for sensor placement. Disconnect power to the HVAC system before wiring to prevent electrical shorts. The wiring process involves connecting the controller to the HVAC system and temperature sensors. Proper wiring is essential for accurate operation. Refer to the wiring diagrams for heat pumps or furnace configurations. After physical installation and wiring, proceed to the setup menu to configure settings. Always follow the manufacturer’s safety instructions to avoid any harm.
Wiring the Controller to HVAC Systems
Wiring the Aprilaire ventilation controller to HVAC systems requires careful attention to detail. Begin by disconnecting power to the HVAC system to prevent electrical shorts. The controller’s wiring will vary depending on whether you have a heat pump or a furnace with an AC unit. For heat pump systems, run a 2-conductor cable from the controller to the outdoor temperature sensor, connecting to the ODT terminals. Wire the controller’s Gf terminal to the HVAC terminal G, ensuring no other wires are connected to HVAC G. For furnace and AC systems, follow the specific wiring diagram provided in the manual. The controller’s R and C terminals should be connected to the corresponding terminals on the HVAC system’s transformer. It is very important to correctly identify the terminals for proper functionality. Pay close attention to the wiring diagrams for your specific HVAC setup to ensure correct connections. Always double-check all wiring before restoring power.
Wiring to Heat Pumps
When wiring the Aprilaire ventilation controller to a heat pump system, begin by disconnecting power to prevent electrical hazards. Use a 2-conductor cable to connect the controller to the outdoor temperature sensor, linking the wires to the ODT terminals. The heat pump thermostat connections involve linking the controller’s terminals to the corresponding terminals on the thermostat or zone panel. Specifically, the controller’s Y and W1 terminals will be connected to their respective counterparts. Additionally, the controller’s VENT terminal must be wired. A wire nut is required for secure connections. Ensure the Gf terminal of the controller is connected to the G terminal of the HVAC system, with no other wires connected to the HVAC’s G terminal. Refer to the manual’s wiring diagram for visual guidance. Confirm all connections are secure before restoring power to the system. This ensures the heat pump and ventilation controller work seamlessly.
Wiring to Furnaces and AC Units
For wiring the Aprilaire ventilation controller to furnaces and AC units, safety is paramount. Always disconnect power to the HVAC system before beginning any wiring work. The controller’s terminals need to be connected to the corresponding terminals on the furnace or AC unit. The Gf terminal on the ventilation controller should be connected to the G terminal on the HVAC system; it is crucial that this is the sole wire connected to the HVAC’s G terminal. A 24 VAC transformer is needed for power, with the R and C terminals of both the controller and the HVAC system connected appropriately. The controller’s wiring typically involves terminals for the thermostat connections. Refer to the provided wiring diagrams to verify the accurate placement of each wire. Proper connections ensure the controller and the HVAC components function correctly. Double-check all wire connections for tightness before restoring power to the system.
Setting Up the Controller Menu
The Aprilaire ventilation controller’s menu allows users to customize its operation. The menu includes settings for selecting the equipment type connected, such as heat pump (HP) or furnace and AC (HC). This selection is crucial for proper functioning. Before configuring, determine the airflow being delivered by the system in cubic feet per minute (CFM). The menu provides options for different ventilation modes, typically referred to as “Code” and “Comfort,” where you can choose the desired mode based on your needs. The amount of ventilation will differ based on settings. Navigate through the menu by using the select button. The screen will initially appear dim; pressing any button will brighten it. Adjust settings according to the specific installation and desired preferences. Understanding each menu item is essential for optimal performance. The settings are crucial for the system to operate correctly.
Operating Modes⁚ Code and Comfort
The Aprilaire ventilation controller offers two primary operating modes⁚ “Code” and “Comfort.” The “Code” mode is designed to meet building code requirements for ventilation. In this mode, the system runs for a set number of minutes per hour based on calculations and settings. This ensures a constant exchange of fresh air. The “Comfort” mode allows users to set a desired ventilation level according to personal preferences. This mode prioritizes comfort and can be adjusted to balance air quality with energy usage. The controller can prevent ventilation during extreme temperatures or humidity. In both modes, ventilation is automatically adjusted based on indoor humidity. The ventilation controller will not allow outside air to enter if it could raise the humidity to high levels. The user can switch between modes according to their needs. The display will show the currently selected mode.
Understanding Test Mode
The Aprilaire ventilation controller includes a “Test Mode,” which is a diagnostic function to verify system operation after installation and setup. This mode is essential for ensuring that all wiring and settings are correctly implemented. By entering test mode, you can check whether the ventilation system activates as expected. It confirms that the HVAC fan turns on when ventilation is required. This test mode is used to verify the ventilation time setting, by scrolling through the settings. It also allows you to ensure that the outdoor temperature sensor is working correctly and influencing the system as it should. Test mode assists in identifying and resolving issues, by showing if the system is working as intended. This mode is particularly useful for troubleshooting and ensuring proper system functionality. It’s important to run the test mode after initial setup. Test mode is only available when “bLnd” is selected in the menu, and is a simple way to confirm correct settings. It is crucial for the system to operate efficiently.
Safety and Mounting Instructions
Prior to installing or servicing the Aprilaire ventilation controller, always disconnect power to the HVAC system to prevent electrical shocks. This is a critical safety precaution. Never mount the controller on the supply plenum or duct, as high temperatures can cause it to lose its calibration. The controller should be mounted on the return ductwork, at a location where temperature and humidity are representative of the indoor conditions. Avoid mounting it directly in the path of outdoor air. When mounting in a closet return plenum, use the duct board mounting bracket provided. When installing on downflow furnaces, ensure the blower continues to run sufficiently long after a heat call to properly distribute fresh air. Secure the controller using the provided screws. The outdoor temperature sensor should be installed in the fresh air inlet hood, using metal foil tape to secure it. Proper installation and mounting are crucial for safe and efficient operation of the ventilation system. Always adhere to these safety and mounting instructions for best performance.
Mounting Location Considerations
Selecting the appropriate mounting location for your Aprilaire ventilation controller is crucial for accurate operation and optimal performance. The controller should always be installed on the return ductwork, where it can effectively monitor the temperature and humidity of the indoor air. Avoid placing the unit on the supply plenum or duct, as elevated temperatures in these areas can lead to calibration issues. It’s essential to choose a location that is representative of the overall indoor environment, ensuring that the readings are accurate and reliable. When mounting in a closet return plenum, use the provided duct board mounting bracket, making sure to avoid the direct path of outdoor air. For systems in hot and humid climates, consider mounting the controller to the return duct and the outdoor temperature sensor as described in the manual to limit ventilation when indoor humidity is high. Ensure the selected area is accessible for future maintenance and adjustments. Proper mounting placement is key to the controller’s ability to effectively manage ventilation and maintain a comfortable indoor environment.
Warranty and Registration Information
Your Aprilaire digital ventilation controller is backed by a limited warranty from Research Products Corporation, demonstrating their commitment to product quality and customer satisfaction. This warranty specifically covers the controller for a period of five years from the date of purchase, offering peace of mind against potential manufacturing defects. To activate the warranty and ensure you receive the full benefits, it is crucial to register your Aprilaire product. You can conveniently complete this registration online at the official Aprilaire website. For those without internet access, a mail-in option is available; simply send a postcard with your purchase details to Research Products Corporation. Include your name, address, phone number, email, product model, purchase date, and dealer information. Prompt registration is essential to ensure the proper handling of potential warranty claims. This process ensures you are fully covered under the manufacturer’s terms, guaranteeing support and assistance if needed for your ventilation controller. Remember to keep your purchase receipt as proof of purchase.
