Dehumidifier Control; If Dehumidification Is Done - Aprilaire S86N MU Owner's Manual

DEHUMIDIFIER CONTROL (S86N MUPR ONLY, IF INSTALLED)
The thermostat can be configured, through the installer
set-up, to control dehumidification with either a whole
home dehumidifier or with the air conditioner (cooling unit).
The thermostat will allow you to set the desired humidity
(% relative humidity) level in your home and can be used to
turn the dehumidification On or Off
1. Use the dehumidification adjustment to set the
dehumidification setpoint to 60% when first installed. Allow
dehumidification to run until the initial setpoint is reached,
before deciding if you want to change the humidity setting
Raise the setting if you prefer the air to be less dry; this will reduce the amount of time that
dehumidification runs.
Lower the setting if you prefer the air to be more dry; this will increase the amount of time
that dehumidification runs.
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 the moisture back into the air until they are
again at the same level. As a result, it is not uncommon for dehumidification to operate for an
extended period of time when it is first installed.
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1
Dehumidifier
Setting 60%
On
Indoor RH 30%
IF DEHUMIDIFICATION IS DONE WITH THE AIR CONDITIONER
The thermostat will cool up to 3°F beyond the cooling setpoint for dehumidification.
NOTE: overcooling may not be sufficient to meet the dehumidification setpoint.
ENERGY SAVING TIP #1:
Adjust the setting to be as high as is comfortable to reduce dehumidification run time – if it
feels clammy or smells damp or moldy lower the setting. To save energy, turn the dehumidifier
control OFF when you open your windows just as you would with air conditioning
ENERGY SAVING TIP #2:
If vacating your home for an extended period in the summer, set the relative humidity to 60%
and the cooling set point to the highest level that meets the comfort and safety needs of your
pets and possessions Consult with professionals to determine the best set point This will keep
the humidity at a controlled level to help prevent mold while minimizing the amount of the
cooling energy used Vacation hold is a convenient way to adjust the dehumidification and
cooling setpoint when you will be away See page 26
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