Aprilaire 1830 Owner's Manual page 2

SETTINg THE DESIRED HUMIDITy LEVEL
The dehumidifier on-board control will display the humidity setting when not running, and
displays the measured humidity when running.
The UP and DOWN arrow buttons allow the humidity level to be set from 40% to 80% relative
humidity. Use the ON/OFF button to turn the dehumidifier ON or OFF.
Set the control at 55%RH when first installed. Allow the dehumidifier to run until it reaches
the setting before deciding if you want to change the setting.
• I f you prefer the air to be more dry, decrease the humidity setting.
• I f you prefer the air to be less dry, increase the humidity setting.
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.
HOW DOES THE DEHUMIDIFIER WORk?
Once per hour the dehumidifier will measure the humidity level of the air and compare it to the humidity setting. If the humidity in your home is
higher than the setting, the dehumidifier will dehumidify the air until the humidity level drops below the setting.
OPTIONAL – HEATINg AND COOLINg SySTEM BLOWER OPERATION
Your installing contractor may have configured the dehumidifier to turn on the heating and cooling system blower when the dehumidifier turns on
to allow for improved circulation of the dry air.
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When the dehumidifier turns on, the blower circulates the air for 3 minutes before measuring the
humidity level of the air. The on-board control will display AIR SAMPLING, along with the measured
humidity on the control screen.
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If the humidity of the air is higher than the setting, the compressor turns on and the control will display
DEHUMIDIFYING, along with the measured humidity on the control screen.
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ENERgy SAVINgS TIPS
Energy Savings Tip #1: Adjust the
humidity setting to be as high as is
comfortable to reduce dehumidifier
run time. If it feels clammy or "smells
musty", lower the humidity setting. To
save energy, turn the dehumidifier to
OFF when you open your windows, just
as you would with air conditioning.
Energy Savings Tip #2: If vacating
your home for an extended period in
the summer, set the RH at 55% and
set your thermostat as high as you
are comfortable setting it to in the
cooling mode. Consult with appropriate
professionals regarding the highest
temperature that is safe for your pets or
possessions. This will keep the humidity
at a controlled level while minimizing
the amount of cooling energy used.