IV. Annual Maintenance

For best performance, we recommend that you replace the water panel evaporator in your Aprilaire Humidifier annually.

•Call the installer of your Aprilaire Humidifier. This information is often found on your equipment.

•Call your heating and air conditioning dealer.

•Use our “Dealer Locator” at: www.aprilaire.com

•Look in the Yellow Pages under Humidifying Apparatus or Heating & Air Conditioner Contractors.

•If none of the above is successful and you still need information, please feel free to write us.

•Purchase only Genuine Aprilaire Water Panels to maintain performance.

V. ANNUAL SUMMER SHUTDOWN

1.For Models 448, 558, 568, and 600 close the bypassdamper if provided. The Model 600 damper is built into the unit and is easily closed with the small damper handle.

2.Shut off the water supply to the humidifier by closing the sad- dle valve.

Humidifier Control:

There is no adjustment to the Humidifier Control required for summer shutdown. (Applies to both Automatic and Manual Mode.)

VI. PERIODIC PREVENTATIVE MAINTENANCE

NOTE: Periodic inspection and preventive maintenance of your total heating system is important for efficient and safe opera- tion. Your heating contractor should include humidifier service at the same time.

All models are equipped with an in-line water strainer and orifice as shown below. These parts should be inspected and cleaned periodi- cally to assure continued proper unit performance.

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448 specifications

The Aprilaire 448 is a state-of-the-art humidifier that plays a significant role in maintaining optimal indoor air quality. Designed specifically for homes, this unit effectively combats dryness, ensuring that the air within your living space remains comfortable and healthy, especially during the colder months.

One of the standout features of the Aprilaire 448 is its robust capacity to cover areas up to 4,000 square feet. This means that even larger homes can benefit from improved humidity levels, protecting not just your comfort but also your furnishings and overall air quality. By maintaining an ideal humidity level between 30% and 50%, the Aprilaire 448 fosters an environment that reduces the risk of respiratory issues, allergies, and dry skin.

The unit incorporates advanced technology to facilitate easy operation and maintenance. Equipped with a digital control, it allows homeowners to set and monitor humidity levels effortlessly. The digital display provides crucial data on current humidity levels, enabling users to make informed adjustments. Additionally, the unit features a built-in humidistat that automatically regulates the humidity based on the settings, ensuring a consistent and comfortable atmosphere.

Energy efficiency is another hallmark of the Aprilaire 448. The unit is designed to function quietly, avoiding disruptions in your daily life, while using minimal energy compared to traditional humidifiers. The water-saving design ensures that it operates effectively without excessive water consumption, making it an eco-friendly choice for conscientious homeowners.

The Aprilaire 448 also boasts a self-cleaning feature that reduces maintenance time and effort. This innovation helps to keep the unit free from mineral buildup, which is a common problem in humidifiers, thereby prolonging its lifespan and reliability. Furthermore, the easy-to-replace water panel ensures that users can maintain their humidifier with minimal hassle.

In summary, the Aprilaire 448 is a powerful and efficient solution for maintaining ideal humidity levels in larger spaces. With its advanced digital controls, energy-efficient operation, and low-maintenance design, it has become a preferred choice for homeowners seeking to enhance their indoor air quality. Whether combating the winter chill or addressing dryness during any season, the Aprilaire 448 delivers comfort and health benefits all year round. Its commitment to reliability and performance makes it a wise investment for any household.

Aprilaire 448 owner manual IV. Annual Maintenance

Models: 448