Immergas FH 25WZ Product manual

DEHUMIDIFIER
IE
Instruction and
warning book

Dear Customer,
Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Immergas customer you
can also count on a qualied aer-sales service, prepared and updated to guarantee constant eciency of your appliance. Read the following pages carefully: you
will be able to draw useful suggestions regarding the correct use of the appliance, the respect of which, will conrm your satisfaction for the Immergas product.
For assistance and scheduled maintenance contact Authorised Immergas Aer-Sales centres: they have original spare parts and are specically trained directly
by the manufacturer.
General recommendations
All Immergas products are protected with suitable transport packaging.
e material must be stored in dry environments protected against bad weather.
e instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
is instructions manual provides technical information for installing Immergas appliance. As for the other issues related to appliance installation (e.g. safety
in the work site, environment protection, injury prevention), it is necessary to comply with the provisions specied in the regulations in force and principles
of good practice.
In compliance with legislation in force, the systems must be designed by qualied professionals, within the dimensional limits established by the Law. Installation
and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by professionally qualied
sta, intending sta with specic technical skills in the plant sector, as envisioned by the Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to people, animals
and objects. Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by skilled technical sta. e Immergas Authorised Aer-sales Service represents a guarantee of qualications and
professionalism.
e appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially
dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions contained in this
book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages and the
appliance warranty is invalidated.
For further information regarding legislative and statutory provisions relative to the installation of gas heat generators, consult the Immergas site at the
following address: www.immergas.com
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and
commercial documents without forewarning.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the appliance model
and the language of the country.

4
INDEX
1. INTRODUCTION...........................................................................................................................................................................................................5
1.1 Preliminary information..........................................................................................................................................................................5
1.2 Aim and content of the manual..............................................................................................................................................................5
1.3 How to store this manual.......................................................................................................................................................................5
1.4 Manual updates.....................................................................................................................................................................................5
1.5 How to use this manual .........................................................................................................................................................................5
1.6 Potential risks ........................................................................................................................................................................................6
1.7 General description of symbols used ....................................................................................................................................................7
1.8 Safety symbols used .............................................................................................................................................................................8
1.9 Limitations and prohibited use...............................................................................................................................................................8
2. SAFETY ...................................................................................................................................................................................................................10
2.1 Warning re potentially hazardous toxic substances.............................................................................................................................10
2.2 Refrigerant handling ............................................................................................................................................................................10
2.3 Prevention of inhalation of high vapor concentrations......................................................................................................................... 11
2.4 Procedures in the event of accidental release of refrigerant ............................................................................................................... 11
2.5 Main Toxicological information on the type of refrigerant used............................................................................................................ 11
2.6 First aid measures............................................................................................................................................................................... 11
3. TECNICHAL CHARACTERISTICS .............................................................................................................................................................................12
3.1 Unit description....................................................................................................................................................................................12
3.2 Accessories .........................................................................................................................................................................................13
3.3 Unit components..................................................................................................................................................................................14
3.4 Refrigerant circuit layout......................................................................................................................................................................14
3.5 Technical data......................................................................................................................................................................................16
3.6 Hydraulic circuit pressure drops ..........................................................................................................................................................16
3.7 Operation limits....................................................................................................................................................................................17
3.8 Sound data ..........................................................................................................................................................................................17
3.9 Safety devices .....................................................................................................................................................................................18
3.10 Electric data.......................................................................................................................................................................................18
4. INSTALLATION ...........................................................................................................................................................................................................18
4.1 General safety guidelines and and use of symbols.............................................................................................................................18
4.2 Health and safety Considerations........................................................................................................................................................19
4.3 Personal protective equipment............................................................................................................................................................19
4.4 Inspection ............................................................................................................................................................................................19
4.5 Storage................................................................................................................................................................................................20
4.6 Unpacking............................................................................................................................................................................................20
4.7 Lifting and handling .............................................................................................................................................................................20
4.8 Location and minimum technical clearances.......................................................................................................................................20
4.9 Assembly of the counter and its installation.........................................................................................................................................22
 4.10Installationofdehumidierintotheformwork ....................................................................................................................................23
4.11 Condensate draining connections......................................................................................................................................................23
4.12 Water coil hydraulic connection.........................................................................................................................................................23
4.13 How to vent the unit...........................................................................................................................................................................24
4.14 Ductwork unit connection ..................................................................................................................................................................24
4.15 Remote mechanical hygrostat connection (HYGR.30)......................................................................................................................25
4.16 Filter extraction..................................................................................................................................................................................26
4.17 Supply and return grilles installation..................................................................................................................................................26
4.18 Electric connections: preliminary safety information..........................................................................................................................27
4.19 Electrical data....................................................................................................................................................................................28
4.20 Electrical connections........................................................................................................................................................................28
5. UNIT START UP..........................................................................................................................................................................................................30
5.1 Preliminary checks ..............................................................................................................................................................................30
5.2 Wiring diagram ....................................................................................................................................................................................30
5.3 Control panel .......................................................................................................................................................................................30
6. USE .............................................................................................................................................................................................................................31
 6.1Unitswitchonandrststartup ...........................................................................................................................................................31
6.2 Stop .....................................................................................................................................................................................................31
6.3 Stand-by ..............................................................................................................................................................................................31
6.4 Displaying during an alarm..................................................................................................................................................................31
7. MAINTENANCE OF THE UNIT...................................................................................................................................................................................32
7.1 General warnings ................................................................................................................................................................................32
7.2 Drive access........................................................................................................................................................................................32
7.3 Periodical checks.................................................................................................................................................................................32
7.4 Refrigerant circuit repair ......................................................................................................................................................................33
8. DECOMMISSIONING..................................................................................................................................................................................................33
8.1 Disconnect the unit..............................................................................................................................................................................33
8.2 Disposal, recovery and recycling.........................................................................................................................................................34
8.3 RAEE Directive (only UE)....................................................................................................................................................................34
9. DIAGNOSIS AND TROUBLESHOOTING..................................................................................................................................................................34
 9.1Faultnding........................................................................................................................................................................................34
10.DIMENSIONAL DRAWINGS ......................................................................................................................................................................................35

5
1. INTRODUCTION
1.1 Preliminary information
1.2 Aim and content of the manual
1.3 How to store this manual
1.4 Manual Update
1.5 How to use this manual
Reproduction, storage or transmission of any part of this publication in any form, without the prior written consent of the Company, is prohibited.
The unit to which these instructions refer, is designed to be used for the the purposes described and to be operated in accordance with these instructions.
The Company will not be liable for claims for damage caused to persons, animals, material goods or property caused by improper installation, adjustment
andmaintenanceorimproperuse.Anyusenotspeciedinthismanualisprohibited.
This document is intended to provide information only and does not form a contract with third parties.
TheCompanypursuesapolicyofconstantimprovementanddevelopmentofitsproductsandthereforereservestherighttochangethespecicationsand
the documentation at any time, without notice and without obligation to update existing equipment.
These instructions are intended to provide the information required for the selection, installation, use and maintenance of the unit.
They have been prepared in accordance with the European Union laws and with the technical standards in force at the date of issue of the instructions.
The instructions contain all the necessary information to prevent any reasonably foreseeable misuse.
The manual must be kept in a suitable place with easy access for users and operators, protected from dust and damp.
The manual must always accompany the unit during the entire life cycle of the same and therefore must be transferred to any subsequent user.
It is recommended that the manual is updated to the latest revision available.
If updates are sent to the customer they must be added to this manual.
The latest information regarding the use of its products is available by contacting the Company.
The manual is an integral part of the unit.
Users or operators must consult the manual before performing any operation and especially so when transporting, handling, installating,
maintaining, or dismantling the unit in order to eliminate uncertainty and reduce risk.
In these instructions symbols have been used (described in the following paragraphs) to draw the attention of operators and users to the
operations that have a higher risk and which must be performed safely.

6
1.6 Potential Risks
Whilst the unit has been designed to minimize any risk posed to the safety of people who will interact with it, it has not been technically possible to
eliminate completely the causes of risk. It is therefore necessary to refer to the requirements and symbolism below:
LOCATION OF RISK POTENTIAL RISK METHOD OF INJURY PRECAUTIONS
Thermal heat
exchangers. Small stab wounds. Contact Avoid any contact, use protective gloves.
Fan and fan grilles. Cuts, eye damage,
broken bones.
Insertion of sharp objects through
the grid while the fans are opera-
ting.
Never put objects through the protection
grilles.
Internal component:
compressors and
discharge pipes
Burns. Contact Avoid any contact, use protective glo-
ves.
Internal component:
electric cables and
metallic parts
Electrocution,
severe burns.
Defect in the supply cable insula-
tion, live metallic parts.
Adequate protection of power cables,
ensure correct earthing of all metal
parts.
External to unit:
unit enclosure
Poisoning,
severe burns.
Fire due to short circuit or overhe-
ating of the supply cable external
to unit.
Size cables and mains protection system
in accordance with iee regulations.
Low pressure safety
valve.
Poisoning,
severe burns.
High evaporating pressure cau-
sing a refgrigerant discharge du-
ring maintenance.
Carefully check the evaporating pres-
sure during the maintenance opera-
tions.
High pressure safety
valve.
Poisoning,
severe burns,
hearing loss.
Activation of the high pressure
safety valve with the refrigerant
circuit open.
If possible, do not open the refrigerant
circuit valve; carefuly check the con-
densing pressure; use all the personal
protective equipment required by law.
Entire unit Externalre
Fire due to natural disasters
or combustions of elements
nearby unit
Providethenecessaryre-ghting
equipment
Entire unit
Explosion, injuries, burns,
poisoning,
folgoramento for natural
disasters or earthquake.
Breakages, failures due to natural
disasters or earthquake
Plan the necessary precautions both
electrical (suitable differential magneto
and electrical protection of the
supply lines; greatest care during the
connections of the metal parts), and
mechanical (special anchors or seismic
vibrations to prevent breakages
or accidental falls ).

7
BANNED
A black symbol inside a red circle with a red diagonal indicates an action that should not be performed.
WARNING
A black graphic symbol added to a yellow triangle with black edges indicates danger.
ACTION REQUIRED
A white symbol inserted in a blue circle indicates an action that must be done to avoid a risk.
Thegraphicsymbol“warning”isqualiedwithadditionalsafetyinformation(textorothersymbols).
Safety symbols combined in accordance with ISO 3864-2:
1.7 General Description of Symbols Used
Safety symbols combined in accordance with ISO 3864-2:

8
GENERAL RISK
Observe all signs placed next to the pictogram. The failure to follow directions may create a risk situation that may be injurious
to the user.
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram.
The symbol indicates components of the unit and actions described in this manual that could create an electrical hazard.
MOVING PARTS
The symbol indicates those moving parts of the unit that could create risk.
HOT SURFACES
The symbol indicates those components with high surface temperature that could create risks.
SHARP SURFACES
The symbol indicates components or parts that could cause stab wounds.
EARTH CONNECTION
ThesymbolidentiesEarthingconnectionpointsintheunit.
READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the instructions of the machine before any operations.
RECOVER OR RECYCLE MATERIAL
1.8 Safety symbols used
1.9 Limitations and prohibited use
The machine is designed and built exclusively for the uses described in “Limitations of use” of the technical manual.
Any other use is prohibited because it may pose a potential risk to the health of operators and users.
The unit is not suitable for operations in environments:
• excessively dusty or potentially explosive atmospheres;
• where there are vibrations;
•wherethereareelectromagneticelds;
• where there are aggressive atmospheres.

9
R134A
HFC-134a TWA 1000 ppm
2.1.1 Identication of the Type of Refrigerant Fluid Used: R134a:
Tetrauoroethane(HFC134a)100%byweightCASNo.:000811-97-2
2.1 Warning re potentially hazardous toxic substances
2. SAFETY
For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets available from
the refrigerant and oil manufacturers.
2.1.2 Identication of the Type of Oil Used.
The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate.
ENVIRONMENTAL PROTECTION : Read the ecological information and the following instructions carefully.
Main Ecological Information Regarding the Types of refrigerants Fluids used.
2.1.3 Persistence and degradation
The refrigerants used decompose in the lower atmosphere (troposphere) relatively quickly. The decomposed products are highly dispersible and therefore
haveaverylowconcentration.TheydonotinuencethephotochemicalsmogwhichisnotamongtheVOCvolatileorganiccompounds(asstipulatedinthe
guidelines to the UNECE). The constituent refrigerants of R407C (R32, R125 and R134a), do not damage the ozone layer. These substances are regulated
under the Montreal Protocol (revised 1992) and regulations EC no. 2037/200 of 29 June 2000.
2.1.4 Effects of discharges
2.1.5 Exposure controls and personal protection
Discharges into the atmosphere of this product does not cause a long-term contamination.
Wear protective clothing and gloves, protect your eyes and face
2.1.6 Professional exposure limits
2.2 Refrigerant handling
Users and maintenance personnel must be adequately informed about the possible risks of handling potentially toxic substan-
ces. Failure to follow such instructions can cause damage to personnel or to the unit.
2.3 Prevent inhalation of high vapor concentration
Atmosphericconcentrationsofrefrigerantmustbeminimizedandkepttoalevelthatisbelowtheoccupationalexposurelimit.Vaporisheavierthanair
and can form dangerous concentrations near the ground where the ventilation rate is lower. Always ensure adequate ventilation. Avoid contact with open
amesandhotsurfacesasthiscancausetoxicandirritatingdecompositionproductstoform.Avoidcontactbetweenliquidrefrigerantandtheeyesorskin.

10
2.4 Procedures to be adopted in the event of accidental release of refrigerant
Ensure suitable personal protection (especially respiratory protection) during cleaning operations.
If deemed safe, isolate the source of the leak. If the leakage is small and if adequate ventilation is provided, allow the refrigerant to evaporate. If the loss
is substantial ensure that measures are taken to adequately ventilate the area.
Contain spilled material with sand, earth or other suitable absorbent material.
Do not allow the refrigerant to enter drains, sewers or basements, as pockets of vapor can form.
2.5 Main Toxicological Information Regarding the Type of refrigerant used
2.6 First Aid Measures
2.6.1 Inhalation
2.6.2 Contact with skin
Movethepersonawayfromthesourceofexposure,keephim/herwarmandlethim/herrest.Administeroxygenifnecessary.Attemptarticialrespiration
if breathing has stopped or shows sings of stopping. If the heart stops, perform external heart massage. Seek medical assistance.
In case of contact with skin, wash immediately with lukewarm water. Thaw tissue using water. Remove contaminated clothing. Clothing may stick to the
skin in case of frostbite. If irritation, swelling or blisters appear, seek medical assistance.
Adherescrupulouslytothewarningsandrstaidproceduresindicatedbelow.
2.5.1 Inhalation
A high atmospheric concentration can cause anaesthetic effects with possible loss of consciousness. Prolonged exposure may lead to irregular heartbeat
and cause sudden death. Higher concentrations may cause asphyxia due to the reduced oxygen content in the atmosphere.
2.5.2 Contact with skin
Splashes of nebulous liquid can produce frostbite. Probably not hazardous if absorbed trough the skin. Repeated or prolonged contact may remove the
skin’s natural oils, with consequent dryness, cracking and dermatitis.
2.5.3 Contact with eyes
Splashes of liquid may cause frostbite.
2.5.4 Ingestion
While highly improbable, may produce frostbite.
2.6.3 Contact with eyes
Rinse immediately using an eyewash or clean water, keeping eyelids open, for at least ten minutes. Seek medical assistance.
2.6.4 Ingestion
Do not induce vomiting. If the injured person is conscious, rinse his/her mouth with water and make him/her drink 200-300ml of water. Seek immediate
medical assistance.
2.6.5 Further medical treatment
Treat symptoms and carry out support therapy as indicated. Do not administer adrenaline or similar sympathomimetic drugs following exposure, due to
the risk of cardiac arrhythmia.

11
3. TECHNICAL CHARACTERISTICS
3.1 Unit description
Thedehumidiersare built vertically, equipped with robust galvanised steel frame, properly designed to operate in combination with radiant cooling sy-
stems.Theunitshavebeendesignedbothtoensurethedehumidicationoftheairunderconditionsofairthermallyneutral,ieatthesametemperature
atwhichtheylevyit,bothinconditionsofcooledair,managingverysmallairowthusavoidinguncomfortabledraftstypicaloftraditionalairconditioning.
The units, can operate even without pre and post cooling coils, this option could be very useful in middle seasons when it is necessary to dry but the air
conditioning system is not in operation.
AllunitsarefullyincompliancewiththeEuropeannormsandprovidedwithCEmarksanddedicatedconformitycerticate.
3.1.1 Frame
All units are made from hot-galvanised thick sheet metal, to ensure the best resistance against the corrosions. The cabinet frame is made by removable
panels to allow an easy inspection and internal maintenance. The condensing drip tray is supply as standrad in all models and it is made in plastic material.
3.1.2 Refrigerant Circuit
The refrigerant circuit is made by using international primary brands components and according to ISO 97/23 concerning welding procedu-
res.TherefrigerantgasusedintheseunitsisR134a.Therefrigerantcircuitincludes:lterdrier,capillaryexpansiondevice,Schradervalves
for maintenance and control, pressure safety device (according to PED regulation).
3.1.3 Compressor
The compressor is reciprocating type, equipped with crankcase heater and thermal overload protection by a klixon embedded in the motor
winding. It’s mounted on rubber vibration dampers and, by request, it can be supplied with some jackets to reduce the noise (accessory).
3.1.4 Condensers and Evaporators
Thecondensersandevaporatorsaremadeofcopperpipesandaluminiumns.Thediameterofthecopperpipesis3/8”andthethickness
ofthealuminiumnsis0,1mm.Thetubesaremechanicallyexpandedintothealuminiumnstoimprovetheheatexchangefactor.The
geometry of these condensers guarantees a low air side pressure drop and then the use of low rotation (and low noise emission) fans.
All the units have a stainless steel drip tray and use a third brazed plate heat exchanger made of stainless steel AISI 316 as condenser in
cooling mode.
3.1.5 Pre and post cold water coils
Thepreandpostcoldwatercoilsaremadeofcopperpipesandaluminiumns.Thediameterofthecopperpipesis3/8”andthethickness
ofthealuminiumnsis0,1mm.Thetubesaremechanicallyexpandedintothealuminiumnstoimprovetheheatexchangefactor.The
pre-coolingcoilisusedtoincreasethedehumidicationcapacityoftheunit,whilethepost-coolingcoilisusedtokeeptheoutletairtem-
perature at the same inlet value.
3.1.6 Water condenser
Type-brazed plate, made of stainless steel AISI 316; The water condenser is used as cooling integration.
3.1.7 Supply fan
The supply fan is centrifugal type, double inlet with forwards blades, dynamically and statically balanced and directly connected to a 3 speed
fan motor. Installed into the unit by interposed ant-vibration kit.
3.1.8 Air Filter
It’s supplied standard with the unit and it’s built in nylon. It can be removed for differential disposal, class G2, according to EN 779:2002.
3.1.9 Microprocessor
All units are equipped with a microprocessor for controlling the timing of the compressor, defrosting cycles and alarms. A special card with light signals
indicates the presence of the supply voltage, the activation of defrosting cycle or the presence of an alarm.
3.1.10 Electric box
The electric switch board is made according to electromagnetic compatibility norms CEE 73/23 and 89/336. The accessibility to the board is possible after
removing the front panel of the unit. Ready for the connection to the power and to the consensus control, The terminal board is also supplied with voltage
free contacts for remote ON-OFF. The terminal block is also arranged with two (2) free contacts to allow operation in ventilation mode only (the 1st) in
coolingmodeoperationthe2nd.Closingtherstcontact,itwillbeenabledforoperationinfanonlywhilethedehumidicationfunctionwillbedisabled.

12
3.1.11 Control and protection devices
All units are supplied with the following control and protection devices:
Water temperature sensor, that signals to the microprocessor the eventual overcome of the hot water temperature set point in the pre and post water coils
during winter operation. In this condition the compressor is disconnected while the fan always run and, when the water temperature returns within the
operation limits, restarts the compressor. The water sensor stops the compressor when the water temperature is above 35°C.
3.1.12 Test
All the units are fully assembled and wired at the factory, carefully evacuated and dried after leak tests under pressure and then charged with ecologic
refrigerant. They are all fully operational tested before shipment. They all conform to European Directives and are individually marked with the CE label
and provided with Conformity Declaration.
3.2 Accessories
3.2.1 Remote mechanical hygrostat (HYGR.30) (for WZversion only)
Tobeinstalledonthewall,itissuppliedwitharegulationknobandworkingrangefrom30%to100%.
Temperatureworkingrangefrom10°Cto35°Cwithprecisionof3%.
3.2.2 Casing (CTFH.25)
In galvanized sheet allows the recess of the unit inside niche. The casing is provided with appropriate tabs for a secure fastening to the wall
and arranged adequate openings for wiring and plumbing. The casing is provided with a neck part and assembly kit.
3.2.3 Supply and Return Grilles (GRFH)
Inwhitelacqueredwood,preparedfortheinletandoutletairtemperature.Thegrilleisinstalledonthedehumidierdeckusingspecialxing
bolts supplied along with grille. The grille is provided with dedicated neck.

13
1
2
1
1
2
3
7
2
5
8
5
6
6
4
4
73
1
2
1
1
2
3
7
2
5
8
5
6
6
4
4
73
1 5
2 6
3 7
4 8
Airlter Electronic card
Pre-cooling coil Fan
Condensing drain Bracket
Compressor Condenser water
Frontal view Back view
3.3 Unit components

14
TheoperationofthedehumidiermodelGHisasfollows:thefantakestheairfromtheambient(7)andit’smadegothroughthelter(1)
and the pre-cooling water coil (2) where it’s cooled and brought to a condition closed to saturation. Now it passes through the evaporating
coil(3)whereit’sfatherlycooledanddehumidied.Atthispointtherearetwopossiblemodalities:
•Modalitywithneutrumair:Theairpassesnowthroughthecondensingcoil(5)whichallowstocondensatethe50%ofthetotalgas,(the
unitcondensatethe50%onairwiththeheatexchanger(5)andthe50%inwaterwiththeheatexchanger(10))thenthereisthepostheating
so that to avoid to send air in the ambient in neutrum thermic conditions.
•Modalitywithcooledair:Theunitcondensatesthe100%inwaterthroughtheheat–exchanger(10).Theair,then,gothroughthecondenser
(5) (disabled) where does not change its characteristics (temperature and humidity).
•DehumidicationwithAirHeatedmode:Theunitinthiscaseperforms100%ofthecondensationintheairwiththeheatexchanger(5)
then the air at the evaporator outlet (3) passes through the condenser (5) that heats the air at constant humidity and then, the air that will
be injected into the room has the same moisture that has output from the heat exchanger (3) but at a higher temperature.
1 2
3 5
4
89
7
6
1 2
3 5
4
89
7
10
Dehumidifercanworkwithairdehumidicationmodewithcoldaironlyiffeedbythewaterplant(normally
around 15 ÷ 18°C). In the absence of cold water, the unit must be switched manually in winter mode, to operate
indehumidication+heating.
3.4 Refrigerant circuit layout

15
Water ow (l/h)
Pressure drop (KPa)
Performances refer to the following conditions:
(1)RoomTemperature26°Crelativehumidity65%,withcoldwatercoilwaterinlettemperature15°C.
(2) Sound power level measured in accordino to ISO 9614.
(3)Soundpressurelevelmeasuredat1mtfromtheunitinfreeeldconditionsdirectionfactorQ=2accordingtoISO9614,minimumfanspeed.
(4)RoomTemperature35°Crelativehumidity80%.
3.5 Technical data
25 25WZ
R134a R134a
Kg 0,25 0,
1430 1430
t 0,36 0,
l/24h 20,1 20,1
V/Ph/Hz 230/1/50 230/1/50
W --- 1250
W 340 340
A 2,5 2,5
W 450 450
A 2,8 2,8
l/h 150 ---
kPa 8 ---
l/h --- 150
kPa --- 7,8
m3/h 250 250
Pa 43 43
dB(A) 45 45
dB(A) 37 37
Model FH
Refrigerant
Refrigerant charge
Global warming potential (GWP)
Equivalent CO2charge
Dehumidification capacity (1)
Power supply
Cooling capacity (1)
Nominal input power (1)
Nominal input current (1)
Maximum input power (4)
Maximum input current (4)
Pre+Post nominal water flow
Pressure drops
Pre+Condenser nominal water flow
Pressure drops
Air Flow
Available static pressure (max speed)
Sound power level (2)
Sound pressure level (3)
002001 004003052051 350
0
5
10
15
20
25
30
35
40
FHWZ
3.6 Hydraulic circuit pressure drops

16
30
10 20 30 40
50
40
70
60
90
100
80
30
0 10 20 30 40 50 60
50
40
70
60
90
100
80
Mod.
Lw Lp
63 125 250 500 1K 2K 4K 8K
dB dB(A) dB(A)
dB dB dB dB dB dB dB dB
25 56,1 47,3 41,2 39,7 38,6 33,2 29,8 20,7 56,9 43 35
3.7 Operation limits
Room relative humidity (%) Room relative humidity (%)
Water Temperature (°C) Air Temperature (°C)
Functioning in dehumidication
Functioning in ventilation
3.8 Sound Data
Sound Data
Octave band (Hz)
Lw: Sound power level according to UNI EN ISO 3746:1997.
Lp:Soundpressurelevelmeasuredat1mtfromtheunitinfreeeldconditionsdirectionfactorQ=2accordingtoISO9614,minimumfanspeed.
The units MUST be used within the operation limit indicated in the diagrams. The warranty will be invalidated if the units are used
in ambient conditions outside the limits reported. If there is the necessity to operate in different conditions, please contact our
technicalofce.
Theunitsaredesignedandmanufacturedtoworkwithambienttemperaturesfrom15°Cto30°Candrelativehumidityfrom40%
to90%.Thetemperatureofthesupplywatercanvaryfrom15°Cto45°C.
When the water temperature exceeds 25 ° C the unit will work only in ventilation mode.
The units are designed to operate within false ceiling and/or heated technical room. The units are NOT suitable for outdoor
installations and / or technical room w/o heat (attics, rooms communicating with the outside) as it may form condensation on the
walls and inside the unit cabinet causing damages.

17
3.9 Safety devices
3.9.1 High pressure switch
The high pressure switch stops the unit when the condensing pressure is higher than the set value. The restart is manual (you need to press the button on
the pressure switch) and it can be carried out only when the pressure is under the value indicated by the differential set.
3.9.2 Defrost thermostat
It’s a device which signals to the electronic control, the necessity to make the defrost cycle. Once the defrost cycle is activated, the defrost thermostat
determines also its conclusion.
3.9.3 Safety thermostat
It’s a device which signals to the electronic control that the limits have been exceeded (pre-post coil inlet water temperature). In this situation the compres-
sor is disabled while the fan keeps on working. When the standard conditions are reset, the compressor starts its working again. This function is active
only in winter.
3.9.4 Defrost
Thefrostonthecoil,obstructstheairow,reducestheavailableexchangearea,consequentlytheunitperformancesandcanseriouslydamagethesy-
stem. All the units are supplied, standard, with a control which defrost automatically the heat exchanger if necessary. This control provides a temperature
probe (defrost thermostat) on the unit evaporator. When the defrost cycle is required, the microprocessor control (according to set parameters) starts
working (the yellow led turns on) according to these modalities:
- air defrost: the compressor is switched off while the fan keeps on working.
For both modalities, at the end of the defrost cycle, there is the dripping time.
For the model GH50-50W, the defrost is cyclical (the microprocessor makes the defrost cyle every 30 minutes), for the GH100-200, both air cooled and
water cooled, the defrost cycle is made in relation to the defrost panel.
4. INSTALLATION
Before undertaking any task the operator must be fully trained in the operation of the machines to be used and their controls.
They must also have read and be fully conversant with all operating instructions.
All maintenance must be performed by TRAINED personnel and be in accordance with all national and local regulations.
The installation and maintenance of the unit must comply with the local regulations in force at the time of the installation.
Avoid contact and do not insert any objects into moving parts.
4.1 General safety guidelines and and use of symbols
V/~/Hz 230/1/50 V/~/Hz 24/1/ 50
V/~/Hz 230/1/50 V/~/Hz 230/1/50
Electric data
tiucriclortnoCylppusrewoP
ylppusrewopsnaFtiucricyrailixuA
3.10 Electric data

18
When operating and maintaining the unit, use the following personal protective equipment listed below, required by law.
Protective footwear.
Eye protection.
Protective gloves.
Respiratory protection.
Hearing protection.
4.2. Health and safety Considerations
4.3 Personal protective equipment
The workplace must be kept clean, tidy and free from objects that may prevent free movement. Appropriate lighting of the work
place shall be provided to allow the operator to perform the required operations safely. Poor or too strong lighting can cause
risks.
Ensure that work places are always adequately ventilated and that respirators are working, in good condition and comply fully
with the requirements of the current regulations.
4.4 Inspection
Wheninstallingorservicingtheunit,itisnecessarytostrictlyfollowtherulesreportedonthismanual,toconformtoallthespecicationsofthelabels
on the unit, and to take any possible precautions of the case. Not observing the rules reported on this manual can create dangerous situations. After
receiving the unit, immediately check its integrity. The unit left the factory in perfect conditions; any eventual damage must be questioned to the carrier
and recorded on the Delivery Note before it is signed. The company must be informed, within 8 days, of the extent of the damage. The Customer should
prepare a written statement of any severe damage.
Before accepting the unit check:
• The unit did not suffer any damage during transport;
• The delivered goods are conforming to what shown in the delivery note.
In Case of Damage
• List the damage on the delivery note
• Inform the Company of the extent of the damage within 8 days of receipt of the goods. After this time any claim will not be considered.
• A full written report is required for cases of severe damage.

19
Packaging could be dangerous for the operators.
The packaging materials should be seperated and sent for disposal or possible recycling to specialist waste companies.
4.5 Storage
Units should be stored under cover and ideally, should remain in their packaging. The tools that are supplied for opening the electrics box should be formally
transferred to the person responsible for the plant.
4.6 Unpacking
It is advisable to leave packaged units during handling and remove it before the installation.
The packaging must be removed carefully to prevent any possible damage to the machine.
The materials constituting the packaging may be different in nature (wood, cardboard, nylon, etc.).
When unloading the unit, it is strongly recommended that sudden movements are avoided in order to protect the refrigerant circuit, copper tubes or any
other unit component. Units can be lifted by using a forklift or, alternatively, using belts. Take care that the method of lifting does not damage the side panels
or the cover. It is important to keep the unit horizontal at all time to avoid damage to the internal components.
Inthenextdrawing,thetypicalceilinginstallationisshown(typicalforresidentialbuildings,ofcesetc.)wheretheunitishangingthankstothehelpof4
brackets supplied standard. The brackets must be connected to the vibration dampers which have to be chosen according to the kind of structure they will
bexedto.It’sadvisabletocovertheinsideofthefalseceilingwithhighdensitybitumelayerandtoforeseeoneormoreopeningstohavethepossibility
tocleantheairlters,tocontroltherefrigerantcircuitandtochecktheelectricalboard.
4.7 Lifting and handling
4.8 Location and minimum technical clearances
The unit has to be installed such that maintenance and repair is possible. The warranty does not cover costs for the provision
of lifting apparatus, platforms or other lifting systems required to perform repairs during warranty period.
The installation site should be chosen in accordance with EN 378-1 and 378-3 standards. When choosing the installation site,
all risks caused by accidental refrigerant leakage should be taken into consideration.

20
220
80mm
OK! NO!
Thecasingfrontprolemustbeushwiththenishedplasterwall.
Oncethecasingisxedtothewall,themachinecanbenallytted.Theunitisxedtothecasingusingthededicatedscrews
supplied.