MODEL 448

MAINTENANCE INSTRUCTIONS

for

APRILAIRE HUMIDIFIER MODEL 448

WARNING! 120 volts may cause serious injury from electrical shock. Disconnect power and shut off water supply before servicing.

5

3

 

 

2

4

 

 

 

1.

Cover Knob

1

 

1

2.

Top Cover

3.

Feed Nozzle

 

4.

Distribution Tray

 

 

5.

Metal Frame

MODEL

448

1.Note humidistat or control setting and turn dial to the “Off” position.

2.Disconnect electrical power and turn off water supply.

3.Remove two aluminum knobs (1), swing up and remove top cover (2) from humidifier.

4.Place finger under white plastic water outlet (3) at top of black water distribu- tion pan (4). Lift up to pop outlet loose from hole and notch in black distribution pan.

5.Tip forward and lift the complete plastic framed evaporative section out of the humidifier.

6.To remove black plastic water distribution pan from evaporative section, push down on pan and out on white plastic frame (Scale Control Insert). Clean “V” openings in water distribution panel but do not scrape coating off bottom surface.

7.Remove Water Panel evaporator and Scale Control Insert. Remove Water Panel evaporator from Insert and clean insert by flexing or using putty knife. Inspect Water Panel evaporator and replace with a new Water Panel evaporator, if nec- essary, with colored spot up.

8.Re-install black water distribution pan. Reinstall evaporative section in the humidifier, with notch and hole in distribution pan toward you. Pop hose fitting on end of feed tube into distribution pan.

9.See page 9 for reservoir and pump cleaning.

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Aprilaire 448 owner manual Model, For

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.