Aprilaire 448 owner manual Model

Page 15

MAINTENANCE INSTRUCTIONS

for

APRILAIRE HUMIDIFIER MODEL 600

CAUTION! Sudden operation may cause personal injury or property damage. Turn humidistat or control to “off” or lowest setting before servicing.

1.Front Cover

2.Feed Tube

3.Nozzle

4.Water Panel Evaporative Assembly

5.Distribution Tray

6.“V” Notches

7.Water Panel

8.Scale Control Insert

9.Drain Hose

10.Integral Damper

MODEL 600

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

2.Turn off water supply.

3.Press the tabs in the latches on the top and bottom of front cover (1) and pull cover off base with both hands. Set aside.

4.Carefully pull the plastic feed tube (2) out of the nozzle (3) at the top of the Water Panel evaporative assembly (4). Pull this assembly out by grasping at top and tipping out.

5.Remove the black distribution tray (5) from the evaporative assembly by lifting straight up from the scale control insert (8). Lightly scrape out any calcium deposits and clean the “V” notches (6) but do not scrape off the granular coating from the bottom. This textured surface helps ensure even water flow for maximum performance. See page 2 if removed.

6.Slide the Water Panel evaporator (7) out from the white plastic Scale Control Insert (8). Clean the insert frame of calcium deposits with a putty knife. Inspect Water Panel evap- orator (Stock No. 35 for Model 600) and substitute a new Genuine Aprilaire Water Panel if necessary. Slide the Water Panel back into the scale control insert with the black col- ored spot up and snap the black distribution tray back into place.

7.Re-install the Water Panel evaporative assembly into the unit by fitting its drain tube into the round receptacle at the base of the unit. Push the assembly in at the top against the beveled tabs that will hold it in place. Push the end of the feed tube back firmly into the nozzle and replace the front cover.

8.Remove the drain hose (9) from the bottom of the unit and bend and flex it to loosen the internal calcium deposits. Then flush it with water under pressure and slip it back onto the drain fitting.

9.Turn on the water supply.

10.Check system operation:

Humidifier Control: (Automatic or Manual) Check system operation by set- ting the knob to “Test.” With furnace blower operating and furnace calling for heat, humidifier will operate for one minute. DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE.

11. Set Humidifier Control to its original position.

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Contents Automatic Humidifier Introduction Principle of Operation Page Operation Guide Automatic Mode Manual Mode-see pgFigure a % Relative Humidity Guide Outdoor Temperature ºF Setting DialFigure B III. Effect of Water Characteristics IV. Annual Maintenance Inspection and Service Instructions For ModelMaintenance Instructions For Models Reservoir Pump Sections Models Model Model Limited Warranty Aprilaire Fresh Air Exchangers Electronic Thermostats Aprilaire Zone Control SystemsService and Water Panel Replacement Record DP #10005406

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.
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