Model | Aprilaire 448 instruction

MODEL 700

MAINTENANCE INSTRUCTIONS

for

APRILAIRE HUMIDIFIER MODEL 700

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

		5
	3	2
	3	4
	1	6
1.	Front Cover	7
2.	Base	7
3.	Water Panel
4.	Distribution Tray
5.	”V” Notches
6.	Water Panel
7.	Scale Control Insert
8.	Drain Hose
9.	Power Cord

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

2.Disconnect electrical power and turn off water supply.

3.Unlatch humidifier cover assembly (1) from base assembly (2) at the bottom of the cover, lift, and set aside.

4.Pull out the evaporative assembly (3) by grasping at the top and tipping out.

5.Remove the black distribution tray (4) from the evaporative assembly (3) by unsnap- ping the white plastic holding strips from the tabs at the end of the tray. Lightly scrape out any calcium deposits and clean the “V” notches (5) but do not scrape off the granular coating from the bottom. This textured surface helps ensure even water flow for maximum performance.

6.Slide the Water Panel evaporator (6) out from the white plastic Scale Control Insert (7). Clean the Scale Control Insert by twisting and flexing it to loosen the calcium deposits or use a putty knife. Inspect the Water Panel evaporator (Stock No. 35) and replace with a new Genuine Aprilaire Water Panel if necessary. Slide the Water Panel evaporator back into the scale control insert with the red colored spot up and snap the black distribution tray (4) back into place.

7.Re-install the evaporative assembly (3) into the base assembly (2). Push the evaporative assembly (3) in at the top between the retaining ribs that hold the assembly in place in a vertical position.

8.Remove the drain hose (8) from the bottom of the unit. 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.Reinstall cover assembly (1) by hooking at the top of the base assembly (2) and latching at the bottom.

10.Reconnect electrical power (9) and turn on the water supply.

11.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.

12. Set Humidifier or control to its original position.

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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.