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M.FDK54-05 UK Manual 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 FDK54 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 32°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.