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 WARNING

1. 

120 Volts may cause serious injury from electric shock. Disconnect electrical power before starting installation or servicing. Leave power 
disconnected until installation/service is completed.

2. 

Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.

 CAUTION

Do not force damper blades by hand, as damage to the product may occur.

NOTE:

 The E100V dehumidifier contains all necessary components to power the 8190FF. The required transformer and power harness are not included 

with the 8190FF.  Aprilaire recommends 18-22 AWG wire and model 4010 or equivalent 24VAC transformer (10 VA min.) for use with any dehumidifier 
other than the E100V.

Model 8190FF Ventilation Plenum  

for Dehumidifier

Installation Instructions

OPERATION

The Model 8190FF is a ventilation plenum that can be installed to any 
Model E100 or Model 1850 dehumidifier. 

•  Ventilation is controlled by the VENT terminals on the dehumidifier 

user interface. Ventilation set up can be found in the dehumidifier 
Installation and Operation Manual.

•  When not powered, the 6" ventilation duct is closed while the 10" return 

duct is open to allow for dehumidification of the air in the home.

•  When ventilating (powered), the return duct closes while the ventilation 

duct opens to allow fresh air to enter the home.

INSTALLING THE 8190FF TO THE DEHUMIDIFIER

NOTE:

 The control must be installed on the top of the dehumidifier. Refer 

to the dehumidifier 

Installation and Operation Manual

 for details on 

moving the control.

1. 

Remove the duct collar, if installed, from the dehumidifier inlet and 
install it on the 10" opening of the 8190FF using the supplied #6 
screws. Use the remaining #6 screws to install the included 6" duct 
collar in the 6" opening. 

NOTE:

 Always install the 10" collar on the 

8190FF to prevent anything from impinging operation of the damper.

2. 

Install two of the supplied #10 screws to the top holes around the 
dehumidifier inlet leaving approximately 1/8" space between screw 
head and cabinet.

3. 

Hang the 8190FF on top screws then install bottom screws and 
tighten all four.

NOTES:

 

•  Ensure the "Airflow Adjustment" thumb screw is in the "+" position and 

tightened down.

•  The 8190FF cabinet is insulated – 

do not insulate the actuator

.

INTERIOR AIR ONLY

VENTILATING

E100V 

WIRING 

PORT

6" FRESH

AIR INTAKE

COLLAR

10" INLET AIR COLLAR

8190FF

AIRFLOW ADJUSTMENT 

THUMBSCREW

E100V

90-2623

90-2624

FIGURE 1 

– DAMPER OPERATION

FIGURE 2 

– ASSEMBLING AND MOUNTING THE 8190FF

FOR INTERNAL

USE ONLY

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