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M.FDKA100-03 26/09/2017
M.FDKA100.1-03 26/09/2017
2. DESCRIPTION OF THE MACHINE
Functioning
This dehumidifier is a refrigerating cycle dehumidifier: its functioning is based on a physical principle
according to which the air, coming into contact with a cooled surface, wets the surface by covering it
with humidity in the form of condensed drops, or ice with low ambient temperature. What really happens
is that a refrigerating machine maintains in a refrigerated state the coil through which is conveyed the
incoming air that, in this way, is cooled and dehumidified. Then the air, passing through a warm heat-
exchanger, heats up and returns in the room dehumidified and at a slightly higher temperature.
The FDK100 Dehumidifier is a refrigerating machine which utilizes its Electronic Board for Room
Humidity control and Defrosting Device control. When the relative humidity goes above the selected set
point, the dehumidifier will energize. Air, moved by an electric fan, is drawn across an evaporator coil.
The evaporator coil is cooler than the dew point of the air so moisture will condense out of the air.
Air is then reheated through the condenser coil and distributed back into the room at a little bit higher
temperature and lower Relative Humidity.
If the room temperature is lower than about 70°F, the condensed moisture become ice; In this case
every roughly 30 minutes, a defrost device allows, tanks a Solenoid Valve, hot gas supplied by the
compressor enter the evaporator melting the ice.
3. INSTALLATION
The area to be controlled should be sealed with a vapor barrier. If installed in a crawlspace, all vents
should be sealed.
Place dehumidifier on level surface
CAUTION
– Once unit is positioned, if the machine didn’t remain always in vertical position, wait
minimum 5 hours before turning the unit “on.” The Electronic board manages the compressor start and
stop to prevent the compressor starts too close.
Route drain line (3/4” ID tubing) to drain condensed water outside of the area.
Plug unit into 10 amp grounded outlet.
To operate unit, press Power key until unit energizes.
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Confirm compressor is running and allow to run for minimum of 15 minutes
If under 70°F, a layer of ice will form on evaporator coil
If over 70°F, a layer of frost or water droplets will form on coil
After you’ve confirmed satisfactory operation of unit, humidistat should be set at desired position
for automatic operation.
NOTE
: Humidistat settings are approximate only. For critical applications, you may want to confirm
actual settings with a psychrometer and adjust according.
