DUCTING

The Aprilaire Dehumidifier is supplied with two 8” round collars. These are packaged with a condensate trap inside the unit behind the filter access panel. When installing the collar make sure the foam seal uniformly contacts the cabinet and secure with 4 screws (not included). UL approved 8” diameter, insulated flexible duct is recommended for all connections. Rigid metal duct may be used. The duct should be capable of handling at least 2” w.c. of positive and 0.75” w.c. of negative pressure. All joints and seams must be sealed.

Design air flow is 275 CFM @ 0.6” w.c. This is equivalent to 70 ft. of 8” duct on the inlet and outlet side of the dehumidifier. Elbows, turns and the static pressure of the HVAC equipment will affect the airflow through the dehumidifier.

•For optimal moisture removal, airflow should be at or above 275 CFM.

•The total static pressure across the dehumidifier must not exceed 0.8” w.c. Check all pressures with the HVAC fan on.

•The outlet from the dehumidifier to the HVAC supply duct must be located at least 6” downstream of the cooling coil.

•If connected to HVAC ductwork, the dehumidifier inlet must be located at least 6” upstream of the HVAC system air cleaner. This will prevent any trapped particulates from being drawn into the dehumidifier.

•If UV Germicidal lamps are installed in the HVAC system, use appropriate methods to protect the flexible duct from the UV light.

•If air noise is a problem, install at least 5 feet of acoustical flexible duct on the outlet and inlet of the dehumidifier.

DRAIN LINE

The included condensate trap

 

 

must be installed to the Model

 

FIGURE 1

1700. Use PVC primer and

Drain Outlet

 

cement to connect the trap to the

1/2”

 

drain outlet on the Model 1700.

 

Drain Trap

The drain outlet is located near

 

2 1/2”

the On/Off toggle switch. Note

High Side

Low Side

orientation of trap prior to

 

 

 

cementing. The high side of the

90-961

 

 

 

trap mates with the Model 1700. The adjustable legs on

 

the Model 1700 must be disengaged approximately 1” to

FIGURE 2

accommodate the trap. Complete the assembly by piping

 

the trap to a drain. The trap must be primed with water

 

prior to start-up.

 

 

If the 1700 is installed in an attic or in an area where

 

flooding is a potential problem, it should be installed in a

3“ MIN

secondary drain pan with a condensate overflow safety

CLEARANCE FOR

switch. See page 12 for condensate overflow safety

ACCESS PANEL

 

switch wiring.

 

 

 

 

TOP VIEW

HANGING

 

20” MINUMUM

 

CLEARANCE FOR FILTER

 

 

(EITHER SIDE)

If hanging the unit, use two unistruts to support the base

FILTER

 

on the outside edges of the feet locations. There must

 

be at least 20” of clearance in front of one of the filter

6" MIN CLEARANCE FOR FILTER

access doors to allow removal of the filter.

90-970

 

 

3

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Aprilaire 1700 installation instructions Ducting, Drain Line, Hanging, Orientation of trap prior to
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1700 specifications

The Aprilaire 1700 is a high-performance dehumidifier designed to effectively control humidity levels in residential and commercial spaces. This unit is particularly suitable for larger areas, with the capability to remove up to 70 pints of moisture per day, making it an ideal choice for basements, crawl spaces, and other large rooms prone to excess humidity.

One of the standout features of the Aprilaire 1700 is its durable construction. Built with robust materials, this dehumidifier is designed to withstand the rigors of continuous operation, ensuring longevity and reliable performance over time. Its compact design allows for easy installation, even in tight spaces, further enhancing its versatility.

The Aprilaire 1700 utilizes advanced dehumidification technology, featuring a 2-stage filtration system that not only removes moisture but also captures airborne allergens like dust and pollen. This makes the air in the home healthier and more comfortable for occupants, especially those with allergies or respiratory issues.

Another key characteristic of the Aprilaire 1700 is its built-in hygrometer, which allows for precise monitoring of humidity levels. The unit automatically adjusts its operation based on real-time humidity readings, ensuring optimal performance and energy efficiency. This smart technology helps in maintaining consistent humidity levels, preventing problems associated with excess moisture, such as mold growth and structural damage.

The unit can be integrated seamlessly with existing HVAC systems, allowing it to work in conjunction with your home’s heating and cooling systems for enhanced climate control. This integration also ensures quieter operation compared to portable dehumidifiers, making the Aprilaire 1700 an unobtrusive option for whole-home humidity management.

User-friendly controls on the unit allow for easy adjustments, enabling homeowners to set their desired humidity levels with ease. Additionally, the Aprilaire 1700 is designed for minimal maintenance, featuring a washable filter that can be cleaned and reused, contributing to cost savings over time.

In conclusion, the Aprilaire 1700 is a powerful and efficient solution for managing indoor humidity levels. With its robust construction, advanced technologies, and user-friendly features, it offers both comfort and peace of mind for homeowners looking to protect their living spaces from the negative effects of excess moisture. By investing in an Aprilaire 1700, users can enjoy a healthier indoor environment year-round.
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