Welcome to the Aprilaire 800 Steam Humidifier Installation Manual. This guide provides step-by-step instructions for installing, maintaining, and troubleshooting the Aprilaire 800, a whole-house steam humidifier designed for efficient humidity control.

Safety Precautions

Before proceeding with the installation of the Aprilaire 800 Steam Humidifier, it is essential to follow all safety precautions to ensure a safe and successful setup. Always read the entire manual before starting the installation process. This product must be installed by a qualified HVAC and electrical contractor to avoid potential hazards; Ensure compliance with local, state, and federal regulations, as well as safety standards.

  • Disconnect all power sources before performing any wiring or maintenance tasks to prevent electrical shock or injury.
  • Use the correct tools and materials specified in the manual to avoid damaging the system or causing safety risks.
  • Keep the humidifier out of reach of children and pets to prevent accidental tampering or burns from hot surfaces.
  • Ensure proper ventilation in the installation area to avoid accumulation of steam or condensation, which could lead to mold growth or slippery surfaces.
  • Follow the manufacturer’s guidelines for water quality and treatment to prevent mineral buildup or contamination.

By adhering to these safety precautions, you can ensure a secure and efficient installation of the Aprilaire 800 Steam Humidifier.

System Requirements and Components

The Aprilaire 800 Steam Humidifier is designed for whole-house humidity control, requiring specific system requirements to function optimally. Ensure your home meets these criteria before installation.

  • Power Supply: The system requires a 24-volt transformer, typically provided by the HVAC system or a dedicated circuit.
  • Water Supply: A reliable water source is needed, with water pressure between 20-100 PSI. Use a water filter to prevent mineral buildup.
  • Drainage: Proper drainage is essential to prevent water accumulation. Connect the drain to a floor drain or utility sink.
  • Air Duct Requirements: The humidifier must be installed in the HVAC system’s cold air return duct, ensuring consistent humidity distribution.
  • Components Included: The Aprilaire 800 includes a steam canister, control board, transformer, and wiring. Additional components like the Aprilaire 850 may be required for advanced features.

Verify all components and system requirements are met to ensure proper installation and operation of the Aprilaire 800 Steam Humidifier.

Installation Process

The Aprilaire 800 installation involves mounting the unit, connecting electrical and water supplies, and ensuring proper drainage. Follow the manual’s step-by-step guide to ensure compliance with safety and performance standards.

4.1 Pre-Installation Checks

Before installing the Aprilaire 800 Steam Humidifier, ensure all components are included in the package. Verify the unit is compatible with your HVAC system and water supply. Check local building codes and regulations for compliance. Inspect the installation site for proper drainage and electrical connections. Ensure the area is clear of obstructions and can accommodate the humidifier’s dimensions. Review the manual to understand the installation process and gather necessary tools. Confirm that the water supply lines and electrical connections meet the specifications outlined in the manual. Ensure the system is turned off before starting any work to avoid accidents. Finally, verify that a qualified HVAC technician is present if you are not experienced in such installations. Proper pre-installation checks ensure a smooth and safe installation process.

4.2 Step-by-Step Installation

Begin by turning off the power to the HVAC system and water supply lines. Mount the Aprilaire 800 humidifier in a location with proper drainage, ensuring it is level and secure. Connect the water supply lines to the humidifier, following the manual’s specifications. Install the drain line to prevent water overflow. Next, connect the electrical components, including the transformer and circuit board, using 18 AWG wire. Ensure all connections are secure and meet local electrical codes. Connect the humidifier to the HVAC system, typically in the cold air return duct. Install the humidistat or control according to the manual’s instructions. Finally, test the system to ensure proper operation, checking for leaks and verifying that steam is produced. Refer to the manual for specific wiring diagrams and installation details. Proper installation ensures efficient and safe operation of the Aprilaire 800 Steam Humidifier.

4.3 Post-Installation Checks

After completing the installation, perform a series of checks to ensure proper functioning. First, turn off the power and inspect all connections for tightness and security. Check for any water leaks in the supply lines, drain line, and internal canister. Verify that the electrical connections, including the transformer and circuit board, are properly secured and meet local codes. Turn the power back on and test the humidifier by running the HVAC system. Ensure steam is being produced and distributed evenly. Check the humidistat or control settings to confirm they are configured correctly for your home’s needs. Inspect the drain assembly for proper water flow and ensure no blockages. Finally, review the installation manual to confirm all steps were followed and that no details were overlooked. These post-installation checks ensure the Aprilaire 800 operates safely and efficiently, providing optimal humidity control for your home.

Wiring and Electrical Connections

Proper wiring and electrical connections are crucial for the safe and efficient operation of the Aprilaire 800 Steam Humidifier. Begin by ensuring the power is turned off at the circuit breaker before starting any electrical work. Use a 24-volt thermostat wire to connect the humidifier to your HVAC system, ensuring all connections are secure and meet local electrical codes. Connect the wires to the designated terminals on the circuit board, following the wiring diagram provided in the installation manual. Verify that the transformer is correctly installed and wired to provide the necessary voltage. After completing the connections, turn the power back on and test the system to ensure it operates correctly. Always refer to the manual for specific wiring instructions and safety guidelines to avoid electrical hazards. Proper wiring ensures the humidifier functions efficiently and safely, providing reliable whole-house humidity control.

Maintenance and Upkeep

Regular maintenance ensures optimal performance of the Aprilaire 800. Clean the humidifier and inspect parts regularly for wear. Replace components as needed to maintain efficiency and safety. Refer to the manual for detailed instructions.

6.1 Cleaning the Humidifier

Regular cleaning of the Aprilaire 800 steam humidifier is essential to ensure optimal performance and prevent mineral buildup. Start by disconnecting power to the unit before cleaning. Drain the water from the system and remove any visible debris. Use a soft brush or cloth to clean the exterior and internal components, paying attention to the steam canister and drain assembly. Mix a solution of water and white vinegar or a descaling product to remove mineral deposits from the canister and tubing. Soak the parts for 30 minutes before rinsing thoroughly with clean water. Ensure all parts are dry before reassembling the humidifier to prevent bacterial growth. Repeat this process every 1–3 months, depending on usage and water hardness. Refer to the manual for detailed cleaning instructions and recommended cleaning solutions. Proper maintenance ensures the humidifier operates efficiently and safely.

6.2 Replacing Parts

Replacing parts on the Aprilaire 800 steam humidifier is essential for maintaining its performance and longevity. Start by turning off the power to the unit and draining any remaining water. The steam canister should be replaced every 1–3 years, depending on usage and water quality. To replace it, disconnect the electrical connections and remove the old canister. Install the new one by aligning it properly and securing it according to the manual. The drain assembly may also need replacement if clogged or damaged. Use genuine Aprilaire parts to ensure compatibility and warranty validity. For the water level sensor, follow the manual’s instructions to avoid electrical issues. Always refer to the installation manual for diagrams and specific replacement procedures. Regular part replacements prevent mineral buildup and ensure efficient operation. If unsure, consult a qualified HVAC technician for assistance.

Troubleshooting Common Issues

Common issues with the Aprilaire 800 include improper installation, water level problems, and electrical faults. Check for leaks, ensure proper drainage, and verify electrical connections. Refer to the manual for specific solutions and repairs.

7.1 Common Problems

Some common issues encountered with the Aprilaire 800 steam humidifier include inadequate humidity output, water leaks, and electrical malfunctions. Inadequate humidity output may result from incorrect installation or clogged water filters. Water leaks often stem from improper connections or faulty drain assemblies. Electrical issues, such as the humidifier not turning on, can be due to loose wiring or blown fuses. Additionally, mineral buildup in the canister can reduce efficiency over time. It’s important to address these issues promptly to maintain optimal performance and prevent further damage. Regular maintenance, as outlined in the manual, can help mitigate many of these problems. Always refer to the installation manual for troubleshooting steps before attempting repairs.

7.2 Solutions and Repairs

To address common issues with the Aprilaire 800 steam humidifier, start by identifying the root cause. For inadequate humidity, clean or replace the water filter and ensure proper installation. Water leaks can often be resolved by tightening connections or replacing worn-out gaskets. Electrical issues may require checking the circuit breaker or ensuring all wires are securely connected. Mineral buildup in the canister can be addressed by descaling with a vinegar solution as recommended in the manual. If the humidifier does not turn on, verify that the power source is active and the thermostat is correctly set. Always turn off power before performing repairs to avoid safety hazards. Refer to the installation manual for specific troubleshooting steps and consult a qualified technician if problems persist. Regular maintenance, such as replacing parts and cleaning components, can prevent many of these issues and ensure optimal performance.

The Aprilaire 800 steam humidifier is a reliable and efficient solution for whole-house humidity control. By following the installation manual and maintaining the system regularly, users can ensure optimal performance and extend the product’s lifespan. Proper installation, adherence to safety precautions, and routine upkeep are crucial for maximizing the benefits of this humidifier. In case of issues, the troubleshooting guide and repair solutions provided in this manual will help resolve common problems effectively. Always refer to the official Aprilaire 800 installation manual for detailed instructions and guidelines. With proper care and maintenance, the Aprilaire 800 will provide consistent humidity control, improving indoor air quality and comfort for years to come. For further assistance, consult the manufacturer’s support or certified professionals. Remember, a well-maintained humidifier ensures a healthier and more comfortable living environment.