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FRAL SRL | via dell’industria e dell’artigianato, 22/C - 35010 Carmignano di Brenta - PADOVA - ITALY
TELPHONE: +39 049 9455839 | FAX: +39 049 5991129 | E-MAIL: info@fral.it | WEB: www.fral.it
 DEUMIDIFICATORI INDUSTRIALI

FD SERIES
The Fral industrial dehumidifiers of the series FD are suitable for humidity control in commercial and industrial spaces. Particularly sturdy and durable,
they can be easily installed and are easy to maintain.
They can also be placed in environments for the preservation of food products or in industrial processes where humidity control is necessary.
They feature a washable air filter and must be connected to a fixed drain.
They are equipped with an onboard mechanical dehumidostat.
Is it possible to connect a remote digital dehumidostat.
The Fral fixed dehumidifiers of the series FD can be equipped with an optional HOT GAS defrosting system, with electronic and thermostatic control,
and can work with temperatures close to 0 °C.

FEATURES

FRAME IP
Standard IP21. On request IP44 (optional).
MODELS FD
Structure with aluminium profiles and panels in sturdy galvanised sheet, HOT GAS DEFROST
painted with epoxy powder ensuring high resistance to atmospheric Enables to use the dehumidifier in environments with temperature up to
agents and aggressive environments. 3 °C. It is a special hot gas injection system to accelerate the defrosting of
the ice formed in the evaporator.
CATAPHORESIS TREATMENT (optional)
AIR SUPPLY
Surface treatment capable of giving the evaporator a considerable
The air supply is supplied as standard on the side opposite to the air inlet,
resistance to corrosion.
but you may require the dehumidifier in TOP version (with delivery on
COMPRESSOR the top side of the machine).
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UIF housing and thermal safety. AIR FILTER
The air filter, supplied as standard with the unit, is washable and easily
replaceable. It is in Polyurethane and High-efficiency filter.
REFRIGERANT CIRCUIT
Evaporator and condenser: the coil is made of copper pipes and MICROPROCESSOR
aluminium fins. Drying fi lter, Shrader valves, minimum and maximum Controls the defrosting cycles, the compressor timer and the alarm card. The
pressure switch. Defrosting thermostat and solenoid valve in version S. dehumidifier is equipped with step sequence control.

CONDENSATE COLLECTION TANK CONTROL PANEL AND ELECTRICAL CONTROL PANEL

MODELS FD Located in the side area of the machine. IP protection degree.
The tank is in non-corrosive stainless steel, the dehumidifier should be Made in compliance with the European standards 73/23 and 89/336.
connected to a fixed drain, preventing the formation of double siphons.
Attach a tube with ¾" F coupling to the welded fitting of the tank. TESTING
Tests are performed to check the tightness of the refrigeration circuit.
CONDENSATE LIFTING PUMP (optional) Electrical discharge tests and functional tests are performed as well.
Pump on request.
TECHNICAL STANDARDS
This dehumidifier meets the essential requirements included in the
FAN Directives of the European Community 2006/95/EC of 12 December
Centrifugal double suction fan, built with sturdy blades in galvanized 2006 on the safety of electrical products for use in Low Voltage;
sheet, statically and dynamically balanced. 2004/108/EC of 15 December 2004 in the field of electromagnetic
Protection degree: Three-speed fan. compatibility; 2006/42/EC of 17 May 2006 in the fields of machinery
safety.
The conformity is declared with reference to the following harmonized
technical standards:
CEI-EN 60335-2-40, CEI-EN 55014-1, CEI-EN 55014-2.
We also declare that the product is manufactured in compliance with
the RoHS Directive in force, that is 2002/95/EC, transposed with the
Legislative Decree of 25 July 2005 no. 151 (article 5).
TECHNICAL SPECIFICATIONS FD  FD  FD 

Rated Average Power Consumption (2  ºC - 60% R.H.)   W ,650 W ,650 W

Maximum power consumption (35 ºC - 95% R.H.) 1,50 W ,400 W 4,400 W

Max. Current Consumption (35 ºC - 95% R.H.) F.L.A.   A  3 A .3 A

Start up current L.R.A. .0 A .0 A  A

Sound Pressure Level (at 3 mts in free field) 
db (A)  db (A)  db (A)

Refrigerant R4B 3B 3B

Fitting on the machine for condensate drain ¾” ¾” ¾”

Operating range (temperatures) 7÷35 °C 7÷35 °C 7÷35 °C

Temperature operating range with optional hot gas defrosting system
0.5÷35 °C 0.5÷35 °C 0.5÷35 °C

Temperature operating range with optional under 0°c defrost system
-0.5÷35 °C -0.5÷35 °C -0.5÷35 °C

Operating range (relative humidity) 45÷99% 45÷99% 45÷99%

Rated Average Power Consumption (20°C, 60% R.H.) with 4 kW resistances
1,50 W ,650 W ,650 W

Hot water coil heating capacity (environment 27°C, water 60/70 °C)
2,000 W ,000 W ,000 W

400/3~0 400/3~0 400/3~0

Available voltage
_ _ _

ACCESSORIES
Hot gas defrost

Under 0°C defrost

Mechanical humidistat

Hot water coil with three-way valve

Electric resistances

Condensate lifting pump

Digital dehumidostat

Digital thermostat

Evaporator cataphoresis treatment

Stainless steel AISI 316 version

WEIGHTS
Weight 230.0 kg  kg 
kg

DIMENSIONS AND WEIGHTS WITH PACKING

Width 1,0 mm  
mm  mm

Height  
mm 1, mm 1, mm

Depth   mm 1,05 mm   mm

CONDENSED WATER AT DIFFERENT AMBIENT TEMPERATURE
AND HUMIDITY CONDITIONS (lt/24h)

10 °C 10 °C 15 °C 15 °C 20 °C 20 °C 25 °C 25 °C 27 °C 27 °C 30 °C 32 °C
60% 80% 60% 80% 60% 80% 60% 80% 60% 80% 80% 90%

FD             

FD             

FD             

AIR FLOW AT DIFFERENT BACK PRESSURES (mc/h)

180 Pa 200 Pa 220 Pa 240 Pa 260 Pa 280 Pa 300 Pa

FD            ,00 ,00

FD  ,500 ,00 ,00 ,00 ,100    

FD               

OPTIONAL ACCESSORIES

HOT WATER COIL (optional) REMOTE DIGITAL THERMOSTAT (optional)

Post-heating coil, which can be connected through a three-way valve to Device that can be installed in an environment for temperature control.
a hot water circuit. The valve is operated by a relay connected to the It controls the power resistances (OPZ) or the 3-way valve that allows the
thermostat. The heating function can also be operated in the absence of passage of the hot water inside the post heating coil.
a request on the part of the humidistat.
UNDER 0°C DEFROST
ELECTRIC RESISTANCE (optional) Kit that allows the dehumidifier to be installed in particularly cold
The post heating electric resistances are operated by a relay connected to environments, such as refrigerating rooms, with temperatures of up to 0
the thermostat. The post heating function can also be operated in the °C.
absence of a request on the part of the dehumidostat.
AVAILABLE STATIC PRESSURE INCREASE
REMOTE DIGITAL HUMIDISTAT (optional) STAINLESS STEEL AISI VERSION
Device that can be installed in an environment equipped for humidity
control, which can be easily connected to the electrical system of the
dehumidifier.
DIMENSIONAL DATA (mm) -
MODELS 





ELETRICAL
VANE

G D
C
E
F

IN LINE VERSION

FITTING 3/4 M
E

TOP SUPPLY VERSION

A B C D E F G

FD          

FD          350 243

FD          470 -

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