Welcome to the Aprilaire 700 Automatic Humidifier Installation Manual. This guide provides comprehensive instructions for installing, operating, and maintaining your Aprilaire 700 or 700M humidifier effectively.

Overview of the Aprilaire 700 and 700M Models

The Aprilaire 700 and 700M are advanced whole-house humidifiers designed to provide optimal indoor air quality. Both models are compatible with forced air heating systems and can be installed on either the supply plenum or cold air return. The Aprilaire 700 features an automatic digital humidifier control, while the 700M includes a manual humidifier control, offering flexibility for different installation needs. These models are engineered to deliver precise humidity control, improving comfort and protecting your home from dry air damage. They support both hot and cold water connections and include a built-in drain system for efficient operation. Regular maintenance, such as replacing the water panel evaporator, ensures long-term performance and reliability.

Importance of Proper Installation for Optimal Performance

Proper installation of the Aprilaire 700 and 700M humidifiers is critical to ensure safe, efficient, and reliable operation. Incorrect installation can lead to reduced performance, increased energy consumption, and potential safety hazards. By following the guidelines in this manual, you can avoid issues such as water damage, mold growth, and electrical malfunctions. Proper installation also ensures compliance with local and federal codes, safeguarding your home and family. Additionally, correct setup guarantees optimal humidity levels, protecting your home from dry air damage and improving indoor air quality. Always refer to the provided instructions and consult a qualified HVAC professional if necessary to ensure a flawless installation process.

Safety Precautions and Compliance

Adhere to all safety guidelines to prevent electrical hazards, water damage, or system malfunctions. Ensure compliance with local and federal codes for safe and proper installation.

General Safety Guidelines for Installation

Always follow safety guidelines to ensure a secure and efficient installation process. Turn off the power supply to the HVAC system before starting any work. Properly ground the humidifier to prevent electrical hazards. Wear protective gear, such as gloves and safety glasses, when handling tools and components. Ensure the installation area is clear of clutter and well-ventilated. Avoid exposing the humidifier to extreme temperatures or moisture during installation. Never modify the unit or bypass safety features, as this could lead to malfunction or injury. Comply with all local electrical and plumbing codes to prevent safety risks and ensure proper operation. Regularly inspect the system for leaks or damage to maintain safety and performance. Always refer to the manufacturer’s instructions for specific safety recommendations.

Compliance with Local, State, and Federal Codes

Ensure the installation of the Aprilaire 700 Automatic Humidifier complies with all local, state, and federal regulations. This includes electrical, plumbing, and HVAC codes to guarantee safety and proper operation. Always verify that the installation meets the requirements of your area, as codes may vary. The humidifier must be installed in accordance with the National Electrical Code (NEC) and local plumbing standards. Failure to comply may result in safety hazards, legal issues, or system malfunction. Refer to the manufacturer’s guidelines and consult local authorities if unsure about specific regulations. Proper compliance ensures optimal performance, efficiency, and adherence to safety standards.

Installation Options for the Aprilaire 700 and 700M

The Aprilaire 700 and 700M models offer flexible installation options, including placement on the supply plenum or cold air return of a forced air system.

Installation on the Supply Plenum

Installing the Aprilaire 700 or 700M on the supply plenum is a common configuration, ensuring efficient humidity distribution throughout your home. This setup allows the humidifier to operate in conjunction with your furnace blower, automatically adding moisture as heated air circulates. The supply plenum installation requires proper mounting and alignment to ensure optimal performance. It is essential to follow the provided template for accurate placement and connections. The humidifier must be connected to a water supply and drain line, with electrical components wired according to the manual. This configuration ensures seamless integration with your HVAC system, providing consistent humidity levels during heating seasons.

Installation on the Cold Air Return

Installing the Aprilaire 700 or 700M on the cold air return is another viable option, offering flexibility in system integration. This configuration allows the humidifier to operate efficiently with your HVAC system, ensuring proper humidity levels even when the furnace is not actively heating. The cold air return installation requires careful mounting and wiring to ensure the humidifier control accurately senses humidity levels and activates the blower as needed. Proper alignment and connections are critical to maintain system performance. This setup is particularly effective in systems where the supply plenum installation is not feasible, providing an alternative solution for whole-house humidity control.

Furnished Items for Installation

The Aprilaire 700 and 700M include a humidifier unit, 24VAC transformer, manual or digital control, saddle valve, and installation template. Additional tools and materials may be required.

Components Included in the Package

The Aprilaire 700 and 700M humidifier packages include essential components for installation. These items are carefully selected to ensure a smooth and efficient setup process. The package typically contains the humidifier unit itself, a 24VAC transformer, and a control system, which varies by model. For the 700M, a manual humidifier control is provided, while the 700A includes an automatic digital humidifier control. Additionally, a saddle valve, installation template, and necessary wiring diagrams are furnished. These components are designed to work together seamlessly, ensuring proper installation and operation. Always verify the contents of your package against the manual to confirm all items are included before starting the installation process.

Tools and Materials Required for Installation

To ensure a successful installation of the Aprilaire 700 or 700M humidifier, gather the necessary tools and materials. You will need a drill, screwdrivers (Phillips and flathead), wrenches (adjustable and open-end), and a utility knife. Additional materials include Copper tubing (for water supply), PVC pipe and fittings (for drain setup), electrical wiring, and wire nuts or connectors. A level, measuring tape, and pencil are essential for accurate placement and alignment. Safety gear like gloves and safety glasses should be worn during the process. Ensure all materials comply with local plumbing and electrical codes. Having these tools and materials ready will streamline the installation and minimize delays.

Installation Steps for the Aprilaire 700 Automatic Humidifier

Follow the detailed steps to install the Aprilaire 700, ensuring proper mounting, water supply connection, drain setup, and electrical wiring for optimal performance and safety.

Preparing the Site for Installation

Before starting the installation, ensure the site is properly prepared. Clear the area around the furnace and ductwork to allow easy access; Verify that all necessary tools and materials are available. Shut off the power supply to the HVAC system and ensure it is cool to avoid any safety risks. Check for any existing damage to the ductwork or system components. Inspect the humidifier and its components for any shipping damage. Ensure the installation location complies with local building codes and manufacturer recommendations. Protect surrounding areas from dust and debris by covering them with drop cloths or plastic sheeting. Finally, review the installation manual to familiarize yourself with the process and safety guidelines. Proper preparation ensures a smooth and safe installation process.

Mounting the Humidifier Unit

Mounting the Aprilaire 700 humidifier unit is a critical step that requires precision. Begin by identifying the suitable location, either on the supply plenum or the cold air return, depending on your HVAC system. Ensure the unit is level and securely fastened using the provided mounting hardware. If installing on the supply plenum, position the humidifier to allow adequate clearance for proper airflow. For cold air return installations, ensure easy access for future maintenance. Use the installation template provided to mark the mounting holes accurately. Follow the manufacturer’s instructions closely to avoid misalignment or damage. Proper mounting ensures optimal performance and longevity of the humidifier. Always double-check the installation before proceeding to the next steps.

Connecting the Water Supply and Drain Line

Connecting the water supply and drain line is a straightforward process that requires attention to detail. Begin by installing the saddle valve on a nearby water supply line, ensuring it is turned off before drilling. Connect the water supply line to the humidifier’s inlet, using the provided fittings. For the drain line, attach it to the humidifier’s drain outlet and route it to a nearby floor drain or condensate pump. Ensure the drain line is properly sloped to prevent standing water. If using hot water, connect it to the humidifier’s hot water inlet for improved performance. After connections, turn on the water supply and check for leaks. Properly securing these connections is essential for efficient operation and to prevent water damage. Always follow local plumbing codes and safety guidelines during this step.

Installing the Electrical Components

Installing the electrical components for the Aprilaire 700 humidifier involves connecting the 24VAC transformer and wiring the humidifier control. Locate a suitable 24VAC power source, typically from the furnace or HVAC system. Connect the transformer to this power source, ensuring all wiring matches the manufacturer’s specifications. For the Model 700, wire the Automatic Digital Humidifier Control, while the Model 700M uses the Manual Humidifier Control. Refer to the wiring diagram provided in the installation manual for specific connections. Mount the control unit in a convenient location, such as the return duct or wall, and ensure all wires are securely connected. Double-check the wiring to avoid short circuits and ensure proper operation. Always turn off the power supply before starting electrical work to maintain safety.

Setting Up the Humidifier Control System

Setting up the humidifier control system involves configuring the control unit to regulate humidity levels effectively. For the Model 700, install the Automatic Digital Humidifier Control, ensuring it is mounted in the cold air return duct or on a wall in the living space. Set the control knob to “Test/Reset” to initialize the system and verify proper operation. For the Model 700M, attach the Manual Humidifier Control and adjust the humidistat to your desired humidity level. Ensure the outdoor temperature sensor is correctly installed or replaced with a plastic resistor case for manual mode. Refer to the wiring diagram and safety instructions for accurate setup. Test the system to confirm it operates smoothly and maintains the desired humidity levels. Always follow the manufacturer’s guidelines for optimal performance.

Final Connections and System Checkout

After completing the installation, ensure all connections are secure and properly aligned. Verify the electrical connections, water supply lines, and drain setup for leaks or misalignments. Power on the system and test the humidifier control by adjusting the humidity settings. Check the furnace blower operation to ensure it activates when humidity is called for. Inspect the water panel for proper saturation and airflow through the humidifier. Run a full cycle to confirm the system operates quietly and efficiently. Refer to the wiring diagram in the control installation manual for any final adjustments. If issues arise, consult the troubleshooting section or contact a certified technician for assistance. Ensure the system is functioning correctly before finalizing the installation.

Maintenance and Upkeep of the Aprilaire 700

Regular maintenance ensures optimal performance and longevity. Replace the water panel evaporator annually and clean the humidifier as needed to prevent mineral buildup and bacterial growth.

Replacing the Water Panel Evaporator

Replacing the water panel evaporator is essential for maintaining optimal humidity control and system efficiency. The evaporator should be replaced annually or as recommended by the manufacturer. To replace it, first, turn off the power and water supply to the humidifier. Open the unit by removing the screws that hold the cover in place. Gently pull out the old evaporator panel and discard it properly. Install the new panel, ensuring it is securely positioned and aligned. Replace the cover and restore power and water supply. Proper disposal of the old panel is important to avoid environmental harm. Regular replacement ensures consistent performance and prevents mineral buildup. Always follow the manufacturer’s guidelines for replacement procedures.

Cleaning and Inspecting the Humidifier

Cleaning and inspecting the Aprilaire 700 humidifier is crucial for maintaining its efficiency and preventing mold or mineral buildup. Start by turning off the power and water supply to the unit. Remove the humidifier cover and gently take out the water panel evaporator. Inspect for any mineral deposits or debris and clean the panel with a soft brush or mild detergent. Check the drain line for blockages and ensure proper water flow. Use a mixture of water and white vinegar to clean the interior and exterior components. After cleaning, rinse thoroughly and allow all parts to dry before reassembling. Regular inspections help identify issues early, ensuring optimal performance and longevity of the system. Always follow the manufacturer’s cleaning recommendations for best results.

Troubleshooting Common Issues

Identify and resolve issues like water leaks, low humidity output, or sensor malfunctions by checking connections, verifying water supply, and ensuring proper control settings and operation.

Diagnosing and Resolving Operational Problems

Common issues with the Aprilaire 700 include water leaks, low humidity output, or sensor malfunctions. To diagnose, check water supply lines for leaks, ensure the humidifier is properly connected to the HVAC system, and verify sensor functionality. If the humidifier fails to turn on, inspect electrical connections and ensure the control is set correctly. For low humidity, check the water panel for cleanliness and ensure proper installation. Refer to the troubleshooting section in the manual for detailed solutions. Regular maintenance, such as replacing the water panel, can prevent many operational issues. Always follow safety guidelines and consult a professional if problems persist.

Proper installation and maintenance ensure optimal performance and longevity of your Aprilaire 700 humidifier. Always follow the manual’s guidelines for a healthy and efficient indoor environment.

Final Tips for Ensuring Long-Term Efficiency

To maintain peak performance of your Aprilaire 700 humidifier, regular maintenance is essential. Replace the water panel evaporator annually or as needed to prevent mineral buildup. Ensure the humidifier is cleaned thoroughly during seasonal shutdowns to remove dirt and debris. Check and replace the humidifier filter as recommended to maintain proper airflow. Always use distilled or demineralized water to minimize scaling issues. Adjust the humidity settings according to seasonal changes to avoid over-humidification, which can lead to mold growth. Inspect the drain line periodically to ensure proper water flow and prevent blockages. Finally, consider scheduling an annual inspection by an HVAC professional to verify optimal operation and address any potential issues before they escalate.