INSTALLATION INSTRUCTIONS

Choosing a location

Dispersion Tube

When choosing a location for the dispersion tube three things must be considered: Location in duct, elevation with respect to the humidifier, and distance from humidifier to dispersion tube..

Duct Location

The preferred location for the dispersion tube is in a supply duct because higher temperature air will more readily absorb the moisture.. Whether installed in a supply or return, the dispersion tube must be in a straight section of duct to avoid turbulent air and must be far enough upstream of any obstruction or bends in the duct to allow the steam to be fully absorbed to prevent condensation.. The exact distance from obstructions in the duct depends on air temperature, RH set point, and airflow velocity in the duct.. Table 2 provides absorption distance for typical conditions.. The higher the RH setting, the longer the absorption distance.. Warmer air shortens the absorption distance.. If absorption distance is a concern, install dispersion tube in supply duct and configure humidifier and control to operate only during HVAC system heat call.. Call Aprilaire Tech Support at 1-800-334-6011 for additional information on absorption..

The dispersion tube must be mounted on a vertical surface with the tube angled up..

If the dispersion tube is mounted on insulated ductwork, make sure insulation is not more than 2” thick at tube location to prevent insulation from blocking first steam outlet..

Table 2 – Absorption Distance (Minimum distance from dispersion tube downstream to any obstruction or bend in duct)

Input

Humidifier

Airflow Velocity

70°F & 30% RH

70°F & 45% RH

65°F & 45% RH

Power

Output

Setpoint

Setpoint

Setpoint

 

 

 

 

 

 

 

 

 

300 fpm

7"

11"

13"

 

 

 

 

 

 

120 V

11..5 gal/day

600 fpm

3"

6"

7"

 

 

 

 

1200 fpm

2"

3"

3"

 

 

 

 

 

 

 

 

 

 

1800 fpm

< 2"

2"

2"

 

 

 

 

 

 

 

 

300 fpm

13"

19"

23"

 

 

 

 

 

 

208 V

20..5 gal/day

600 fpm

6"

10"

12"

 

 

 

 

1200 fpm

3"

5"

6"

 

 

 

 

 

 

 

 

 

 

1800 fpm

2"

3"

4"

 

 

 

 

 

 

 

 

300 fpm

15"

23"

28"

 

 

 

 

 

 

240 V

23..3 gal/day

600 fpm

6"

12"

13"

 

 

 

 

1200 fpm

5"

6"

7"

 

 

 

 

 

 

 

 

 

 

1800 fpm

3"

4"

5"

 

 

 

 

 

 

5

Page 4 Page 6
Page 5
Image 5
Aprilaire specifications Choosing a location Dispersion Tube, Duct Location, fpm 1200 fpm 1800 fpm 300 fpm
Page 4 Page 6

800 specifications

The Aprilaire 800, a highly efficient whole-home humidifier, is designed to enhance indoor air quality and comfort. As part of Aprilaire's renowned line of whole-home products, this system excels in maintaining optimal humidity levels, mitigating health issues related to dry air, and protecting the integrity of your home.

One of the standout features of the Aprilaire 800 is its impressive capacity to deliver significant moisture output—up to 18 gallons per day. This output is ideal for larger homes, ensuring that every room receives adequate humidity. The unit is particularly effective in combating the adverse effects of dry air during winter months when indoor heating can lead to discomfort and increased susceptibility to respiratory issues.

The Aprilaire 800 employs advanced technology, specifically the use of a self-regulating humidifier design that operates independently of your heating system. This means it can maintain humidity levels even when the furnace is not in use. The unit showcases a built-in digital control, allowing homeowners to set and monitor humidity levels easily. The device can also integrate seamlessly with most HVAC systems, enhancing its versatility.

Another notable characteristic of the Aprilaire 800 is its unique water panel design. The patented self-cleaning feature helps reduce mineral buildup, ensuring optimal performance and longevity. This means that maintenance is simplified, requiring minimal intervention to keep the unit functioning at peak efficiency.

Furthermore, the unit can be connected to a water line for continuous operation, eliminating the need for manual refills. This feature not only adds convenience but also ensures a consistent supply of moisture throughout your home.

Energy efficiency is a key consideration in the design of the Aprilaire 800. Its operation is tailored to minimize energy consumption while maximizing moisture output, making it an environmentally friendly choice for maintaining indoor comfort.

In summary, the Aprilaire 800 whole-home humidifier combines high capacity, advanced technology, ease of use, and energy efficiency. It is an ideal solution for homeowners looking to improve their indoor air quality, comfort, and overall well-being during dry seasons. Whether you are dealing with dry skin, respiratory issues, or damage to wooden furniture, the Aprilaire 800 can be a valuable addition to your home.
Top Page Image Contents