Aprilaire 720M

AprilAire 720M Whole-House Fan-Powered Evaporative Humidifier Instruction Manual

Model: 720M | Brand: Aprilaire

1. Úvod

The AprilAire 720M Whole-House Fan-Powered Evaporative Humidifier is designed to provide optimal humidity control for homes up to 6,250 square feet. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your humidifier. Please read all instructions carefully before proceeding.

AprilAire 720M Whole-House Fan-Powered Evaporative Humidifier with manual control unit

An image showing the AprilAire 720M humidifier unit, which is white and blue, alongside its manual control panel. The unit is designed for whole-house humidification.

2. Bezpečnostní informace

Please read and understand all safety warnings and instructions before installing or operating this product. Failure to follow these instructions may result in property damage, personal injury, or death.

  • Elektrické nebezpečí: Disconnect all power to the humidifier and HVAC system before performing any installation, maintenance, or service.
  • Doporučená profesionální instalace: Installation should be performed by a qualified HVAC professional or a knowledgeable individual with experience in electrical and plumbing systems.
  • Soulad s kódem: Ensure all plumbing and electrical connections comply with local building codes and regulations.
  • Poškození vodou: Inspect all water connections for leaks after installation and periodically during operation.
  • Integrita komponent: Do not operate the humidifier without the HydroCore™ water panel properly installed.

3. Obsah balení

Verify that all items listed below are present in your package before beginning installation.

  • 720 Humidifier Unit
  • Model 4655 Manual Control
  • L HydroCore™ Water Panel
  • 24 VAC 10VA Transformer
  • Sedlový ventil
  • Návod k obsluze
  • Šablona instalace
All components included in the AprilAire 720M humidifier package

A visual representation of all items provided with the AprilAire 720M humidifier, including the main unit, the manual control, the HydroCore water panel, a transformer, a saddle valve, the owner's manual, and an installation template.

4. Vlastnosti produktu

The AprilAire 720M humidifier incorporates several design elements for effective and efficient humidification:

  • Vysoká zvlhčovací kapacita: Delivers up to 21 gallons of humidification per day, suitable for balancing humidity in larger homes up to 6,250 square feet.
  • Ochrana vody: Features an innovative recirculation valve that reduces wastewater by 60% compared to previous models, promoting sustainability.
  • Easy Maintenance HydroCore™: Equipped with a one-piece disposable HydroCore™ water panel cartridge, constructed from recycled plastic, for simplified annual replacement.
  • Ruční ovládání: Includes a Model 4655 manual control, compatible with duct or wall mounting, providing a reliable method for humidity adjustment.
  • Enhanced Evaporative Efficiency: A hybrid fan design maximizes air distribution across the water panel, resulting in increased output and efficiency.
  • Oboustranný design: The fan module can be reconfigured to accommodate various installation configurations, including horizontal setups, optimizing performance in tight spaces.
  • Prevence úniku: Designed with an integrated catch-all drain to minimize the risk of water leaks.
  • Distribution Tray: The distribution tray allows for installation even if the unit is up to 3 degrees out of level.
Close-up of the AprilAire HydroCore water panel being held

A person's hand holding the AprilAire HydroCore water panel, emphasizing its one-piece design for quick and easy maintenance and replacement.

Diagram illustrating the reversible design of the AprilAire 720M humidifier

An image displaying two configurations of the AprilAire 720M humidifier, demonstrating its reversible design. One shows the fan on the left (standard), and the other shows it reconfigured to the right, allowing for flexible installation.

5. Instalace

The AprilAire 720M humidifier is designed for integration with your home's HVAC system. Due to the complexity involving sheet metal work, plumbing, and electrical connections, professional installation is recommended. If performing a self-installation, ensure you possess the necessary skills and tools. Refer to the included Installation Template and Owner's Manual for comprehensive instructions.

5.1 Výběr místa

Choose a location on your furnace's supply plenum that provides sufficient space for the humidifier's dimensions and allows for future maintenance access. Ideally, the unit should be installed above the A/C coils.

Diagram showing the dimensions of the AprilAire 720M humidifier

A diagram illustrating the physical dimensions of the AprilAire 720M humidifier, providing height, depth, and width measurements in both inches and centimeters for installation planning.

5.2 Mechanická instalace

  1. Use the provided installation template to accurately mark and cut the opening in the plenum.
  2. Mount the humidifier securely to the plenum. The reversible design allows for fan module reconfiguration to fit various furnace setups.
  3. Ensure the distribution tray is level within 3 degrees to facilitate proper water flow.

5.3 Vodovodní připojení

  1. Connect the water supply to the humidifier. While a saddle valve is included, a more robust connection (e.g., a tee with a quarter-turn valve) is recommended for long-term reliability and to prevent leaks.
  2. Connect the drain line from the humidifier to a suitable floor drain or utility sink. The unit's design includes a catch-all drain for leak prevention.

5.4 Elektrické připojení

  1. Connect the included 24 VAC 10VA transformer to a dedicated power source and then to the humidifier.
  2. Wire the Model 4655 Manual Control between the humidifier and the furnace. Refer to the wiring diagrams in the Owner's Manual for specific connections.
  3. For smart thermostat integration, consult your specific thermostat's documentation for humidifier wiring instructions. This typically involves connecting the humidifier's two wires to the furnace control board's "C" (common) terminal and the thermostat's humidifier control terminal (e.g., "*" or "ACC+").

6. Návod k obsluze

Once installed, the AprilAire 720M humidifier operates in conjunction with your HVAC system to maintain desired humidity levels.

6.1 Manual Control (Model 4655)

The Model 4655 Manual Control allows you to set the desired humidity level in your home.

  1. Locate the manual control unit, which may be mounted on a duct or a wall in your living space.
  2. Turn the dial to your desired humidity setting. Recommended settings typically range from 35% to 45% relative humidity, adjusted based on outdoor temperature to prevent condensation.
  3. The humidifier will activate when the furnace fan is running and the indoor humidity level falls below the set point on the control.
AprilAire 720M humidifier with its manual control unit

The AprilAire 720M humidifier unit is shown next to its manual control panel, which features a rotary dial for setting the desired humidity level.

6.2 Nastavení ventilátoru

The humidifier features high/low fan settings to adjust fan speed for comfort and sound levels. Refer to the Owner's Manual for specific instructions on adjusting these settings.

7. Údržba

Regular maintenance ensures the longevity and optimal performance of your AprilAire 720M humidifier.

7.1 HydroCore™ Water Panel Replacement

The HydroCore™ water panel cartridge should be replaced annually, or more frequently depending on water quality and usage, to ensure optimal performance and efficiency.

  1. Disconnect power to the humidifier and furnace at the circuit breaker.
  2. Open the humidifier cover according to the instructions in your Owner's Manual.
  3. Remove the old one-piece HydroCore™ cartridge by pulling it out. Dispose of the old cartridge responsibly.
  4. Insert a new AprilAire L HydroCore™ cartridge, ensuring it is properly seated within the unit.
  5. Close the humidifier cover securely and restore power to the humidifier and furnace.

7.2 Čištění

Periodically inspect the humidifier for mineral buildup, especially in the distribution tray and drain components. Clean these areas as needed using a mild detergent and water. Avoid abrasive cleaners or harsh chemicals that could damage the unit.

8. Řešení problémů

This section provides solutions to common issues you might encounter with your AprilAire 720M humidifier. For problems not listed here, contact customer support.

ProblémMožná příčinaŘešení
Humidifier not runningJednotka není napájena
Příliš nízké nastavení hygrostatu
Ventil přívodu vody je uzavřen
Porucha elektromagnetického ventilu
Check circuit breaker and electrical connections
Increase the humidistat setting
Ensure water supply valve is open
Inspect or replace solenoid valve (professional service recommended)
Insufficient humidity outputPříliš nízké nastavení hygrostatu
Clogged or old HydroCore™ water panel
Insufficient airflow from furnace fan
Increase the humidistat setting
Replace the HydroCore™ water panel
Ensure furnace fan is operating correctly and filter is clean
Excessive water wasteRecirculation valve issue
Incorrect installation or leveling
Inspect recirculation valve for debris or malfunction
Verify unit is installed level (within 3 degrees)
Úniky vodyVolné vodovodní spoje
Ucpané odtokové potrubí
Poškozené součásti
Tighten all water supply and drain connections
Clear any obstructions from the drain line
Inspect unit for cracks or damage; replace if necessary

9. Specifikace

Key technical specifications for the AprilAire 720M Whole-House Humidifier:

  • Číslo modelu: 720 mil
  • Zvlhčovací kapacita: 21 Gallons Per Day (GPD)
  • Oblast pokrytí: Up to 6,250 sq. ft. (tight construction); up to 3,150 sq. ft. (average construction); up to 2,100 sq. ft. (loose construction)
  • Rozměry (V x H x Š): 16.5 x 10.5 x 18 palce
  • Hmotnost: 13.75 libry
  • Provozní režim: Odpařovací
  • Typ ovládání: Manual (Model 4655 included)
  • Moc: 24 VAC 10VA Transformer (included)
  • Výrobce: Research Products Corporation
Table showing AprilAire Model 720 home sizing based on construction type and square footagelektronické pokrytí

A table detailing the recommended home sizing for the AprilAire Model 720 humidifier, indicating coverage up to 6,250 sq ft for tight construction, 3,150 sq ft for average construction, and 2,100 sq ft for loose construction, all based on 21 GPD output.

10. Záruka a podpora

10.1 Informace o záruce

The AprilAire 720M Whole-House Humidifier comes with a 5-letá záruka. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for all warranty claims. For full warranty terms and conditions, refer to the Owner's Manual or the official AprilAire webmísto.

10.2 Zákaznická podpora

For technical assistance, warranty claims, or to purchase genuine replacement parts, please contact AprilAire customer support. Visit the official AprilAire website or refer to the contact information provided in your Owner's Manual for the most current support options.

© 2025 Aprilaire. All rights reserved.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.