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SETTING THE DESIRED HUMIDITY LEVEL
At the inlet side of the unit, a humidity control knob sets the desired
humidity level between 1 (less dry, dehumidifier runs less) and
7 (more dry, dehumidifier runs more), or can be used to turn the
dehumidifier OFF. The ON/OFF switch on the front of the unit should
be left ON and only be used to turn the dehumidifier off when
performing maintenance (see page 4 for maintenance requirements).
Set the control at a Normal level, between 3 and 4, when first
installed. Allow the dehumidifier to run for 24 hours before deciding if
you want to change the setting.
• If you prefer the air to be more dry, increase the setting; this
will increase the amount of time that the dehumidifier runs.
• If you prefer the air to be less dry, decrease the setting; this
will reduce the amount of time that the dehumidifier runs.
The settings on the dial can be approximated to relative humidity (RH)
using the table to the right.
Your comfort is the best measure of how to adjust your setting. When
first installed, your dehumidifier has to remove all the moisture that
is initially in your home. The home acts like a sponge so the moisture
in the materials of your home is at the same level as the air. After
drying the air, the materials of the home will release moisture back
into the air until they are again at the same level. As a result, it is
not uncommon for the dehumidifier to operate for an extended period
when first installed.
Control Knob Setting
Indoor Temperature (°F)
65 70 75 80
1 84% 71% 60%
2 86% 73% 61% 52%
3 74% 63% 53% 45%
4 64% 54% 45% 39%
5 55% 46% 39% 33%
6 47% 39% 33% 28%
7 40% 34% 28% 24%
Note: This table is for reference only.
Humidity Control Knob
90-1327
ENERGY SAVINGS TIP
Adjust the setting to be as low as is comfortable to reduce dehumidifier run time – if it feels clammy or smells damp, raise the setting.
To save energy, turn the dehumidifier setting to OFF when you open your windows just as you would with air conditioning.
WHEN DOES THE DEHUMIDIFIER TURN ON?
The dehumidifier turns on the first time that the blower in your home heating and cooling system turns on (i.e. air conditioning comes on or you
run the fan continuously) within the Cycle Period. Your installing contractor set the Cycle Period when the dehumidifier was first installed; it
may be set for once every 30 minutes, once per hour, once every two hours or once every three hours. If the heating and cooling system blower
does not turn on within the Cycle Period, the dehumidifier will turn itself on at the end of the Cycle Period. The Cycle Period setting determines
how frequently the dehumidifier measures the humidity level in the air; once per hour is usually sufficient to maintain comfort. If you want the
dehumidifier to check the humidity level more or less often, contact your installing contractor.
An optional Model 75 Control can be mounted directly in the home
for easy access to the humidity setting and measured humidity in
the living space. The Model 75 continuously measures the humidity
level to turn on the dehumidifier on-demand. Consult your installing
contractor for more information about the Model 75 Control.
Model 75 Control
2