Aprilaire 700 Humidifier Installation Manual: A Comprehensive Plan
This manual guides users through the Aprilaire 700 installation, referencing wiring diagrams and operation guides (Table 1).
It details initial setup,
Windows 11 compatibility,
and French language DVD resources for software/firmware activation and updates.

Understanding the Aprilaire 700 Humidifier
The Aprilaire 700 is a whole-house humidifier designed to add moisture to your home’s air during the heating season. It’s crucial to understand its function within your HVAC system, typically installed in the cold air return duct. This unit differs from portable humidifiers, offering a consistent humidity level throughout the entire house.
The control system, vital for operation, may have compatibility considerations with Windows 11, requiring a check of your PC’s specifications. Activation and updates, sometimes delivered via DVD (often in French), ensure optimal performance. The 700 model shares operational similarities with the 400 and 600 series, as detailed in the Operation Guide (Table 1).
Proper installation, guided by the manual and wiring diagrams, is paramount. The initial setup requires matching the control settings to your home’s specific conditions, a process refined during the first heating season. Resources, including French language support, are available for assistance. Understanding these aspects ensures efficient and effective humidity control.
Initial Setup and Considerations
Before commencing installation, verify your system’s compatibility with the Aprilaire 700, particularly if utilizing a Windows 11-based control system. Ensure your PC meets the minimum requirements to avoid installation issues. The humidifier control is positioned within the cold air return duct, necessitating accessible ductwork for proper integration.
Consider the water supply line connection; a reliable source is essential. The included DVD, often in French, may contain software or firmware updates crucial for activation. Familiarize yourself with the wiring diagram overview to understand electrical connections.

Initial control settings require adjustment to match your home’s specific conditions, referencing Table 1 in the Operation Guide (applicable to 400, 600 & 700 models). A bootable DVD or USB drive might be needed for a fresh Windows 11 install. Prioritize safety precautions throughout the setup process, and remember to check for available models on platforms like Darty.com.
Safety Precautions
Prior to initiating any installation steps, disconnect the power supply to your HVAC system at the breaker panel. This prevents electrical shock during wiring connections. Exercise caution when working with water supply lines to avoid leaks and potential water damage. Always adhere to local electrical codes and regulations throughout the installation process;
If installing or reinstalling Windows 11, ensure the bootable DVD or USB drive is from a trusted source to prevent malware. When handling the humidifier unit itself, wear appropriate safety glasses to protect your eyes from debris.

Be mindful of sharp edges on ductwork during attachment. If unfamiliar with electrical wiring, consult a qualified HVAC technician. Proper grounding is crucial for safe operation. Regularly check for any signs of damage to wiring or components. Remember, a licensed professional can ensure a safe and compliant installation, especially concerning Windows 11 compatibility.
Tools and Materials Required
For a successful Aprilaire 700 installation, gather these essential tools: a screwdriver set (Phillips and flathead), wire strippers/crimpers, a drill with appropriate bits, a level, and a pipe cutter for the water supply line. A multimeter is helpful for electrical testing. You’ll also need Teflon tape for sealing water connections and duct tape for securing the humidifier to the ductwork.
Materials include the Aprilaire 700 humidifier unit, a compatible humidifier control (installed in the cold air return), and sufficient length of ½-inch copper or PEX tubing for the water line. Ensure you have appropriate wire connectors and electrical tape.
If utilizing a Windows 11 installation DVD, a DVD drive or USB adapter is necessary. Consider a voltage tester for electrical safety. Having a bucket and towels handy can mitigate potential water spills during plumbing connections. Finally, access to the Operation Guide (Table 1) is crucial throughout the process.
Locating the Humidifier Control
Proper placement of the Aprilaire 700 humidifier control is critical for optimal performance. The control unit must be installed within the cold air return duct, ensuring it accurately senses the air temperature and humidity levels. Avoid locations directly exposed to sunlight or near heat sources, as this can skew readings.
Ideally, position the control approximately 5-7 feet above the furnace or air handler. Ensure sufficient space around the unit for easy access for adjustments and maintenance. The control should be mounted securely to prevent vibration and maintain accurate operation.
Consider proximity to electrical wiring for convenient connection. Remember that Windows 11 compatibility may influence control system updates, so ensure a stable connection. Refer to the wiring diagram for specific mounting and electrical requirements. Proper location contributes to the humidifier’s efficiency, as detailed in the Operation Guide (Table 1).
Wiring Diagram Overview

The Aprilaire 700 humidifier’s wiring diagram is essential for a safe and functional installation. It details the connections between the humidifier control, the furnace control board, and the power source; Carefully review the diagram before commencing any electrical work.
Typically, the wiring involves a 24V AC power connection, a signal wire to the furnace to indicate a call for heat, and wires for the solenoid valve and fan motor. Always disconnect power to the furnace before making any connections. Ensure correct polarity and secure wire connections to prevent shorts or malfunctions.
The diagram will illustrate the specific wiring configuration for your model, potentially differing based on furnace type. Consider potential Windows 11 compatibility issues with control systems during updates. Refer to the Operation Guide (Table 1) for troubleshooting. Incorrect wiring can damage the system; professional assistance is recommended if unsure.
Connecting the Water Supply Line
Properly connecting the water supply line is crucial for the Aprilaire 700 humidifier’s operation. A cold water line, typically ½ inch copper or PEX tubing, is required near the humidifier unit. Ensure the water supply is turned off before beginning this step.
Use a saddle valve or a tee fitting to tap into the existing water line. A saddle valve is easier to install but may be prone to leaks; a tee fitting provides a more secure connection. Apply Teflon tape to all threaded connections to prevent leaks. Connect the water supply line to the humidifier’s water inlet using a flexible tubing.
Check for leaks immediately after turning the water supply back on. Consider potential issues during the first heating season and adjust control settings accordingly (refer to Table 1). Be mindful of potential software/firmware updates and Windows 11 compatibility. Regularly inspect the water line for leaks and damage.
Attaching the Humidifier to the Ductwork
Securely attaching the Aprilaire 700 to the ductwork is vital for efficient operation and preventing airflow restrictions. The humidifier control is typically installed in the cold air return duct. Ensure the ductwork is clean and free of debris before installation.
Position the humidifier so that airflow passes through it. Use sheet metal screws to firmly attach the humidifier cabinet to the ductwork. Seal all seams with duct sealant to prevent air leaks, maximizing humidity output. Proper sealing is crucial for optimal performance during the first heating season.

Verify the humidifier is oriented correctly according to the installation diagram. Consider potential software/firmware updates and Windows 11 compatibility of the control system. Regularly inspect the ductwork connections for tightness and damage. Refer to the operation guide (Table 1) for optimal settings.
Electrical Connections
Establishing correct electrical connections is paramount for safe and reliable operation of the Aprilaire 700. Always disconnect power at the breaker before commencing any electrical work. The wiring diagram overview provides a detailed guide for connecting the humidifier control.
Typically, a 24V AC power source from the furnace control board is required. Carefully connect the wires according to the diagram, ensuring secure connections. Double-check polarity and wire routing to prevent shorts or malfunctions. Consider Windows 11 compatibility of the control system’s software.
Use appropriate wire connectors and strain relief to protect the wiring. Regularly inspect the electrical connections for looseness or damage. Refer to the operation guide (Table 1) for troubleshooting common issues. Ensure the installation adheres to local electrical codes and safety precautions. Proper grounding is essential for safety.
Setting the Initial Humidifier Control Settings
Initial setup of the Aprilaire 700 control is crucial for optimal performance during the first heating season. The control needs adjustment to match your home’s specific conditions. Refer to Operation Guide (Table 1) for detailed instructions and recommended settings.
Begin by selecting a moderate humidity level, typically between 30-40%. Monitor indoor humidity levels using a separate hygrometer to verify accuracy. Adjust the control incrementally, observing the impact on humidity. Consider factors like home insulation, air leakage, and local climate.
Familiarize yourself with the operating instructions for 400, 600, and 700 models, as slight variations may exist. Ensure Windows 11 compatibility if the control system utilizes software interfaces. Regularly check and fine-tune settings throughout the season for consistent comfort. Proper calibration ensures efficient operation and prevents condensation.
Operation Guide – Table 1 Reference
Table 1 within the Operation Guide serves as the primary reference for adjusting the Aprilaire 700 humidifier control. It details recommended settings based on varying home conditions and desired humidity levels. Understanding this table is vital for efficient operation and personalized comfort.
The table typically correlates outdoor temperature ranges with suggested humidity control settings. Consider factors like home insulation, air leakage, and the number of occupants when interpreting the data. Initial settings for the first heating season should align with moderate humidity (30-40%), adjusting as needed.
Regularly consult Table 1 throughout the heating season, especially during significant weather changes. It provides guidance on preventing over-humidification and condensation. Ensure compatibility with Windows 11 if utilizing digital control interfaces. Proper use of Table 1 maximizes efficiency and maintains optimal indoor air quality.
Troubleshooting Common Installation Issues
Common installation challenges with the Aprilaire 700 often involve water supply line connections and electrical wiring. Verify the water supply line is securely attached, preventing leaks, and that the solenoid valve operates correctly. Electrical connections must adhere to local codes, ensuring proper grounding and voltage.

If the humidifier doesn’t activate, check the wiring diagram and confirm all connections are secure. Inspect the control board for any visible damage. Compatibility issues with Windows 11-based control systems can sometimes cause communication errors; ensure drivers are updated.
Persistent issues may stem from incorrect initial settings. Refer to Table 1 in the Operation Guide for guidance. Consider professional assistance if you’re uncomfortable with electrical work or plumbing. Remember the French language DVD resources are for software, not installation support. A faulty solenoid valve or control board may require replacement.
First Heating Season Adjustments
During the initial heating season, careful adjustments are crucial for optimal performance of your Aprilaire 700; Begin by setting the humidifier control to match your home’s specific conditions, referencing Table 1 in the Operation Guide for recommended starting points.
Monitor indoor humidity levels closely. Adjust the control settings incrementally, observing how the humidifier responds to changes in temperature and airflow. Be aware that new construction or significant home renovations may require more frequent adjustments.
Consider the impact of Windows 11 compatibility on the control system. Ensure any software updates are installed to maintain accurate readings and responsiveness. Remember the French language resources on the DVD pertain to software installation, not humidity adjustments. Regularly inspect the water panel for mineral buildup and replace as needed for efficient operation.
Understanding the Operation Instructions (400, 600 & 700 Models)
The Operation Instructions, applicable to 400, 600, and 700 models, detail how to effectively manage your Aprilaire humidifier. Key to understanding these instructions is Table 1, providing a reference for setting humidity levels based on outdoor temperature and home conditions.
These guides explain how the control system interacts with your HVAC system, ensuring proper moisture distribution. Pay close attention to sections covering seasonal adjustments and troubleshooting common issues. Remember that Windows 11 compatibility may influence the control system’s interface, so software updates are vital.
The French language DVD offers installation support, but the core operational principles remain consistent across all language versions. Familiarize yourself with the manual’s diagrams and explanations to maximize efficiency and maintain optimal indoor air quality. Proper operation extends the lifespan of your humidifier.
Windows 11 Compatibility Considerations (Related to Control Systems)

Ensuring compatibility between your Aprilaire 700 humidifier control system and Windows 11 is crucial for optimal performance. The minimum system requirements for Windows 11 may impact the functionality of software used to monitor or control your humidifier. If your PC doesn’t meet these requirements, consider an upgrade or alternative control methods.
Software updates for the humidifier control system are essential to maintain seamless integration with Windows 11. Check for available updates regularly, as these often address compatibility issues and enhance performance. The French language DVD may contain updated software versions.
Activation and firmware updates are vital for continued operation. Consider purchasing a Windows 11 Pro license for enhanced features and stability. Darty.com provides updated model availability information. Proper configuration ensures reliable humidity control.
DVD Installation & French Language Resources
The installation DVD included with some Aprilaire 700 systems features a French language interface. This resource is particularly useful for users preferring French instructions or requiring assistance with software installation in that language. The DVD offers a bootable Windows 11 Pro or Family installation, complete with an official license and updates through 2026.
For new PC installations or reinstallations, the DVD provides a convenient method to create a bootable USB drive or directly install Windows 11. A detailed notice in French accompanies the DVD, guiding users through the process. Fast shipping and tracking are available from France.

Verify PC compatibility with Windows 11 before proceeding. DA Licences offers discounted Windows 11 options and rapid activation. The DVD ensures a straightforward installation experience, with included invoice and French documentation.
Activation and Updates (Software/Firmware)
Proper activation of your Aprilaire 700 humidifier control system is crucial for optimal performance. The included DVD, particularly the French language version, often contains the necessary software and firmware for initial setup and ongoing updates. Ensure your PC meets the minimum Windows 11 requirements for seamless integration.
Activation guarantees access to the latest features and bug fixes, enhancing the humidifier’s efficiency and responsiveness. DA Licences provides officially licensed Windows 11 keys with guaranteed activation and updates through 2026, simplifying the process. Regularly check for firmware updates to maintain compatibility and address potential issues.
The software facilitates communication between the humidifier control and other smart home systems. Utilize the provided resources and documentation to navigate the activation process effectively. A stable internet connection is recommended during updates.
Where to Find Additional Support & Resources
For comprehensive assistance beyond this manual, several resources are available to support your Aprilaire 700 humidifier installation and operation. User manuals, specifically the updated Aprilaire 700 Installation Manual, provide detailed guidance and troubleshooting steps. Online retailers like Darty.com frequently update model availability and may offer support documentation.
Microsoft’s website offers extensive resources for Windows 11 compatibility checks and installation assistance, crucial given the system’s integration with the humidifier control. DA Licences provides support for Windows 11 activation and licensing inquiries. Aprilaire’s official website is a primary source for FAQs, technical specifications, and contact information.
Consider exploring online forums and communities dedicated to HVAC systems and smart home technology. These platforms often host discussions and solutions to common installation challenges. Remember to consult a qualified HVAC technician for complex issues or if you are uncomfortable performing any installation steps.