Elsteam MISTRAL User manual

924EHUCE4.00 - 06/2022
MISTRAL
Ultrasonic humidiers
of small size and capacity
Use and maintenance manual
WARNING
Make sure you read and fully
understand the manual before
using this device.
Non-observance of these
instructions may result in death
or serious injury.

CONTENTS
924EHUCE4.00 - Mistral Humidier 06/2022
| 2 |
IMPORTANT INFORMATION.............................................................................................................. 5
IMPORTANT SAFETY INFORMATION................................................................................................ 6
SAFETY INFORMATION RELATING TO THE PRODUCT..................................................................... 7
1. INTRODUCTION............................................................................................................................... 8
1.1 Description.............................................................................................................................................. 8
1.2 Product overview ................................................................................................................................... 8
1.3 Available models .................................................................................................................................... 8
1.4 Applications ............................................................................................................................................ 8
1.5 Main features ......................................................................................................................................... 9
1.5.1 Electronic control features........................................................................................................................9
1.5.2 I/O specications .......................................................................................................................................9
1.6 Accessories ............................................................................................................................................ 9
2. TECHNICAL DATA.......................................................................................................................... 10
2.1 Technical specications......................................................................................................................10
2.2 I/O specications ................................................................................................................................11
3. RECEIVING THE PRODUCT ........................................................................................................... 12
3.1 Checking the packaging.......................................................................................................................12
3.1.1 Opening the packaging..............................................................................................................................12
3.1.2 Checking the packaging contents............................................................................................................12
4. MECHANICAL ASSEMBLY............................................................................................................ 13
4.1 Before you start ...................................................................................................................................13
4.2 Information concerning installation and the surrounding environment 13
4.3 Dimensions............................................................................................................................................14
4.3.1 Dimensions of Mistral...............................................................................................................................14
4.3.2 Dimensions of Mistral with box................................................................................................................14
4.3.3 Dimensions of Mistral with support bracket..........................................................................................15
4.4 Minimum installation distances..........................................................................................................16
4.4.1 Open space.................................................................................................................................................16
4.4.2 Enclosed space..........................................................................................................................................16
4.5 Support bracket ................................................................................................................................... 17
4.5.1 Support bracket dimensions....................................................................................................................17
4.5.2 Precautions for mounting with a support bracket ................................................................................17
4.6 Method of mounting with a support bracket.....................................................................................18
4.7 Metal box ..............................................................................................................................................19
4.7.1 Dimensions of metal box...........................................................................................................................19
4.7.2 Precautions for mounting with metal box...............................................................................................19
4.8 Method of mounting with box.............................................................................................................. 20
4.8.1 Installation on a wall.................................................................................................................................20
4.8.2 Installation on a supporting base............................................................................................................21

CONTENTS
924EHUCE4.00 - Mistral Humidier 06/2022
| 3 |
5. HYDRAULIC INSTALLATION AND CONNECTIONS ..................................................................... 22
5.1 Humidier composition .......................................................................................................................22
5.1.1 Top and front..............................................................................................................................................22
5.1.2 Bottom ........................................................................................................................................................22
5.2 Hydraulic installation........................................................................................................................... 22
5.2.1 Water specications.................................................................................................................................22
5.3 Water drainage system .......................................................................................................................23
5.3.1 Connection specications........................................................................................................................23
5.3.2 Drain water ................................................................................................................................................23
5.4 Aerosolized water distribution...........................................................................................................24
5.4.1 Vertical distribution kit.............................................................................................................................24
5.4.2 Intake conveyor ........................................................................................................................................25
5.4.3 Pipe installation example..........................................................................................................................27
6. ELECTRICAL CONNECTIONS........................................................................................................ 28
6.1 Before you start ...................................................................................................................................28
6.2 Connection best practice ....................................................................................................................28
6.2.1 Wiring best practices................................................................................................................................28
6.2.2 Wiring guidelines.......................................................................................................................................29
6.2.3 Guidelines for screw terminal blocks .....................................................................................................29
6.2.4 Permitted cable lengths............................................................................................................................29
6.3 Wiring diagram .....................................................................................................................................30
6.4 Congurations......................................................................................................................................31
6.4.1 Resistive humidity sensor connection ....................................................................................................31
6.4.2 Humidity sensor connection 4...20 mA....................................................................................................31
6.4.3 Humidity sensor connection 0...10 V.......................................................................................................32
6.4.4 External proportional humidistat connection with signal 0...10 V .......................................................32
6.4.5 ON/OFF connection with humidistat or external contact .....................................................................32
7. USER INTERFACE .......................................................................................................................... 33
7.1 Mistral user interface .........................................................................................................................33
7.1.1 LED ..............................................................................................................................................................33
7.1.2 Keys ............................................................................................................................................................33
7.2 EV3K user interface .............................................................................................................................34
7.2.1 Icons...........................................................................................................................................................34
7.2.2 Touch keys .................................................................................................................................................34
7.2.3 Main view ...................................................................................................................................................35
7.2.4 Setting and changing the setpoint ...........................................................................................................35
7.2.5 Maintenance menu ...................................................................................................................................36
7.2.6 Maintenance parameters ........................................................................................................................36
7.2.7 Accessing the parameters menu.............................................................................................................37
7.2.8 Changing fan speed...................................................................................................................................38
7.2.9 Maximum humidity production conguration........................................................................................38

CONTENTS
924EHUCE4.00 - Mistral Humidier 06/2022
| 4 |
8. FIRST POWER-UP AND START-UP ................................................................................................ 39
8.1 Introduction..........................................................................................................................................39
8.2 Switching on the humidier.................................................................................................................39
8.3 Checks to be carried out each time the humidier is switched on 39
9. OPERATION.................................................................................................................................... 40
9.1 Draining water / washing reservoir ..................................................................................................40
9.2 Operating mode conguration............................................................................................................ 40
9.3 Fan speed conguration......................................................................................................................42
9.4 Humidity setpoint conguration .........................................................................................................43
9.4.1 Examples of humidity setpoint conguration.........................................................................................43
9.5 Maximum steam production conguration.......................................................................................45
9.6 Temperature sensor ............................................................................................................................45
9.7 Humidity adjustment ............................................................................................................................46
9.7.1 ON/OFF regulator......................................................................................................................................46
9.7.2 External proportional regulator with 0...10 V input ..............................................................................47
9.7.3 Regulator with humidity sensor...............................................................................................................48
9.8 Recording hours of operation............................................................................................................. 48
9.8.1 Mist-maker operating hours: partial number ........................................................................................48
9.8.2 Fan operating hours: partial number ......................................................................................................48
9.9 Parallel operation ................................................................................................................................49
10. MAINTENANCE............................................................................................................................ 50
10.1 Introduction .......................................................................................................................................50
10.2 Periodically checking the status of the humidier ........................................................................50
10.3 Cleaning the Reservoir ......................................................................................................................51
10.4 Replacing mist-maker ceramic discs ............................................................................................... 52
11. SPARE PARTS .............................................................................................................................. 53
12. ADJUSTMENT PARAMETERS..................................................................................................... 54
12.1 Table of adjustment parameters ...................................................................................................... 54
13. MODBUS RTU FUNCTIONS AND RESOURCES........................................................................... 56
13.1 Introduction .......................................................................................................................................56
13.2 Modbus message structure.............................................................................................................. 56
13.3 Modbus functions and registers ......................................................................................................56
13.3.1 Available Modbus commands and data areas .....................................................................................57
13.4 Address conguration....................................................................................................................... 57
13.5 Connections........................................................................................................................................57
13.6 Modbus tables content......................................................................................................................57
13.7 Mistral modbus addresses ...............................................................................................................58
13.7.1 Table of Modbus addresses...................................................................................................................58

CONTENTS
924EHUCE4.00 - Mistral Humidier 06/2022
| 5 |
14. DIAGNOSTICS ............................................................................................................................. 59
14.1 Alerts table (LED interface)............................................................................................................... 59
14.1.1 Warnings ..................................................................................................................................................59
14.1.2 Alarms ......................................................................................................................................................59
14.1.3 High or low humidity alert ......................................................................................................................59
14.1.4 Level sensor alert ...................................................................................................................................60
14.1.5 Water alert...............................................................................................................................................60
14.2 Alerts table (EV3K interface)............................................................................................................60
15. WIRING DIAGRAM ..................................................................................................................... 62

06/2022
| 6 |
924EHUCE4.00 - Mistral Humidier
IMPORTANT INFORMATION
Liability and residual risks
ELSTEAM assumes no liability for any damage caused by the following (by way of example; this is not an exhaustive list):
• Installation/useforpurposesotherthanthosespeciedand,inparticular,notadheringtothesafetyprovisionssetout
by current regulations in the country in which the product is installed and/or contained in this manual;
• Useinappliancesthatdonotguaranteesufcientprotectionagainstelectricshocks,wateranddustwithinthe
installation conditions created;
• Useinappliancesthatallowaccesstohazardouspartswithouttheuseofakeyedortooledlockingmechanismwhen
accessing the instrument;
• Tampering and/or modifying the product;
• Installation/use in appliances which do not comply with current regulations in the country in which the product is
installed.
The customer/manufacturer is responsible for ensuring their machine complies with these regulations.
ELSTEAM’s responsibility is limited to the correct and professional use of the product in accordance with regulations and the
instructions contained in this manual and other product support documents.
TocomplywithEMCstandards,observealltheelectricalconnectioninstructions.Asitdependsonthewiringconfigurationas
wellastheloadandtheinstallationtype,compliancemustbeverifiedforthefinalmachineasspecifiedbytherelevantproduct
standard.
Disclaimer
This document is the exclusive property of ELSTEAM. It contains a general description and/or a description of the technical
specifications for the services offered by the products listed herein. This document should not be used to determine the
suitability or reliability of these products in relation to specific user applications. Each user or integration specialist should
conducttheirowncompleteandappropriateriskanalysis,inadditiontocarryingoutaproductevaluationandtestinrelation
to its specific application or use. Users can send us comments and suggestions on how to improve or correct this publication.
Neither ELSTEAM nor any of its associates or subsidiaries shall be held responsible or liable for improper use of the
information contained herein.
ELSTEAMhasapolicyofcontinuousdevelopment;therefore,ELSTEAMreservestherighttomakechangesandimprovements
to any product described in this document without prior notice.
The images in this document and other documentation supplied with the product are provided for illustrative purposes only and
may differ from the product itself.
The technical data in this manual is subject to change without prior notice.
Terms and Conditions of use
Permitted use
The device should only be used for humidification.
Thedevicemustbeinstalledandusedinaccordancewiththeinstructionsprovidedand,inparticular,hazardousliveparts
must not be accessible under normal conditions.
The device must be suitably protected from water and dust with regard to its application and must also only be accessible with
the aid of a tool.
Only qualified personnel may install the product or perform technical support procedures on it.
The customer must only use the product as described in the documentation relating to that product.
Prohibited use
Any use other than those described in the "Permitted use" section and in the product support documentation is prohibited.
Disposal
The device must be disposed of in accordance with local regulations regarding the collection of electrical and
electronic appliances.
Consider the environment
Thecompanyworkstowardsprotectingtheenvironment,whiletakingaccountofcustomerrequirements,
technological innovations in terms of materials and the expectations of the community to which we belong. ELSTEAM
placesgreatimportanceonrespectingtheenvironment,encouragingallassociatestobecomeinvolvedwithcompany
valuesandguaranteeingsafe,healthyandfunctionalworkingconditionsandworkplaces.
Please consider the environment before printing this document.

06/2022
| 7 |
924EHUCE4.00 - Mistral Humidier
IMPORTANT SAFETY INFORMATION
Please read this document carefully before installation; study all the warnings before using the device. Only use the device in
accordance with the methods described in this document. The following safety messages may be repeated several times in
thedocument,toprovideinformationregardingpotentialhazardsortoattractattentiontoinformationwhichmaybeusefulin
explaining or clarifying a procedure.
SYMBOLS
Thissymbolisusedtoindicateariskofelectricshock.
Itisasafetyindicationandassuch,shouldbeobservedtoavoidpotentialaccidentsorfatalities.
Thissymbolisusedtoindicateariskofseriouspersonalinjury.
Itisasafetyindicationandassuch,shouldbeobservedtoavoidpotentialaccidentsorfatalities.
SAFETY MESSAGES
DANGER
DANGER indicatesasituationofimminentdangerwhich,ifnotavoided,will lead to death or serious injury.
WARNING
WARNING indicatesasituationofimminentdangerwhich,ifnotavoided,may lead to death or serious injury.
CAUTION
CAUTION indicatesapotentiallyhazardoussituationwhich,ifnotavoided,could cause minor or moderate injury.
NOTICE
NOTICE indicates a situation not related to physical injuries but which ,ifnotavoided, could damage the equipment.
NOTE:Themaintenance,repair,installationanduseoftheequipmentmustonlybeentrustedtoqualifiedpersonnel.
QUALIFIED PERSONNEL
Only suitably trained and experienced personnel capable of understanding the content of this manual and all documentation
regardingtheproductareauthorisedtoworkonandwiththisequipment.Furthermore,thepersonnelmusthavecompleted
coursesinsafetyandmustbeabletorecogniseandpreventtheimplieddangers.Thepersonnelmusthavesuitabletraining,
knowledgeandexperienceatatechnicallevel,andbecapableofanticipatinganddetectingpotentialriskscausedbyusing
theproduct,aswellaschangingthesettingsandmodifyingthemechanical,electricandelectronicequipmentfortheentire
systeminwhichtheproductisused.Allpersonnelworkingonandwiththeproductmustbeentirelyfamiliarwiththerelevant
standardsanddirectives,aswellassafetyregulations.

06/2022
| 8 |
924EHUCE4.00 - Mistral Humidier
SAFETY INFORMATION RELATING TO THE PRODUCT
Beforecarryingoutanyworkontheequipment,readtheseinstructionscarefully,makingsureyouunderstandeverything.
DANGER
RISK OF ELECTRIC SHOCK OR ELECTRIC ARC
• Only use electrically insulated measuring devices and equipment.
• Do not install the equipment while the power supply is connected.
• Cutoffthepowersupplytoallequipment,includinganyconnecteddevices,andremovethepowerfusesbeforeremoving
anycoversorhatches,orbeforeinstalling/uninstallingaccessories,hardware,cablesorwires.
• AlwaysuseaproperlycalibratedVoltmetertomakesurethesystemispoweredoff.
• Themaintenance,repair,installationanduseoftheequipmentmustonlybeentrustedtoqualifiedpersonnel.
• Do not touch the unshielded components or the terminals while they are live.
• Do not modify the product.
• Do not expose the equipment to liquids or chemicals.
• Makesurethereisaneffectiveearthconnection;ifthereisnot,earththeequipment.
• Beforepoweringuptheequipment,checkallthewiringconnections.
DANGER
RISK OF ELECTRIC SHOCK AND FIRE
• Do not use the device with loads greater than those indicated in the technical data section.
• Do not exceed the temperature and humidity ranges indicated in the technical data section.
• Providesafetyinterlocks(isolators)ofasuitablesizebetweenthepowersupplyandthehumidifier.
• Only use cables with a suitable cross-section as indicated in the section “Wiring best practices”.
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR FIRE
• Install the humidifier away from electronic equipment.
• Do not install the humidifier above electronic equipment.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
• Performthewiringcarefully,incompliancewithelectromagneticcompatibilityandsafetyrequirements.
• Makesurethewiringiscorrectfortheendapplication.
• Minimisethelengthoftheconnectionsasmuchaspossible,toavoidwindingthecablesaroundelectricallyconnectedparts.
• Beforeapplyingthepowersupply,checkallthewiringconnections.
• Donotconnectwirestounusedterminalsand/orterminalsmarkedwiththetext“Noconnection”(“N.C.”).
WARNING
REGULATORY INCOMPATIBILITY
Makesurealltheequipmentusedandsystemsdesignedconformtocurrentlocal,regionalandnationalstandards.
Health and Hygiene
The Mistral humidifier features:
• Automatic draining for inactivity;
• Periodic automatic cleaning;
• Plastic material on whose surface bacterial colonies do not proliferate.
Inadequate use and/or poor maintenance of the humidifier can damage your health.
WARNING
BIOLOGICAL RISK
• In the event of inadequate use and/or poor maintenance it is possible that microorganisms (including the bacterium that
causes Legionellosis) may proliferate and be transferred into the air treatment system.
• Thehumidifiermustbeusedproperlyandbemaintainedandcleanedproperlyatprescribedintervals,asdescribedin
chapter "10. MAINTENANCE" ON PAGE 51.

06/2022
| 9 |
924EHUCE4.00 - Mistral Humidier
1. INTRODUCTION
1.1 DESCRIPTION
The Mistral humidifier is the ELSTEAM solution for compact ultrasonic adiabatic humidification systems.
The Mistralhumidifiergenerateshumiditybybreakingupthemoleculesofthewatercontainedinthereservoirandproducing
mist through the energy transferred by ultrasonic ceramic transducers.
The water is aerosolized by oscillating the surface of the transducers in contact with the water using a high frequency signal
which generates a column of water above the transducers. During the negative amplitude of the transducer (the surface of the
transduceroscillatesathighspeed),waterbubblesareproducedthatcollidewitheachotherduringthepositiveamplitude
phase,resultinginwatermistthatisintroducedintotheroombytheairflowgeneratedbythefan.Themist(humidity)is
introduced into the room via a rigid tube.
1.2 PRODUCT OVERVIEW
2
1
3
5
8
9
7
6
4
Reference Description
1Aerosolized water outlet
2Suction fan
3LED user interface
4
Switching power supply unit 230 Vac - 24
Vac/dc
5Water reservoir
6Box for mounting on a wall or on the base
(optional)
7Water outlet solenoid valve
8Water inlet solenoid valve
9Outlet manifold
Fig. 1. Overview of Mistral humidier with box
1.3 AVAILABLE MODELS
Code Description
EHUC001M2 Mistral-productioncapacity1kg/h
1.4 APPLICATIONS
Mistral is mainly used in applications including:
• Storage rooms:
• Display of fresh produce;
• Foodstores;
• Coldroomsandunitsfortemperature,humidityandmaturation;
• Wine cellars;
• Air-conditioning with fan convectors.

06/2022
| 10 |
924EHUCE4.00 - Mistral Humidier
1.5 MAIN FEATURES
• Adiabatichumidierwithlowenergyconsumption;
• Constantandefcientproduction;
• Smallfootprinttsinsmallspaces(1kg/hunit);
• Electronic control:
• ViaexternalsignalON/OFF,0...10V;
• Incorporatedvia4...20mA,0...10Vsensororresistive;
• Waterleakageprotectionsystem.
1.5.1 Electronic control features
• Proportional control of production of humidity:
• Highefciency;
• Rapid response to changes in requirements;
• Precise production control.
• Protection against no inlet water;
• Automatic draining:
• Removes scale build-up in the reservoir;
• Signals operating status via LED interface:
• Continuous monitoring of the operating status;
• Viewing alerts.
1.5.2 I/O specifications
• Analogue/digitalinput:congurablebyCFG parameter;
• Digital input: manages enabling operation from an external signal;
• Digitaloutput:managesanalertorisacommandforparallelconguration;
• RS-485serial:seriallinkforcommunicatingwithremoteuserinterface(see"1.6 ACCESSORIES" ON PAGE 10).
1.6 ACCESSORIES
The following accessories are available for the Mistral range of ultrasonic humidifiers:
P/n Description
EHUK007 Mistral metal support
EHUK008 Mistral metal box
EHUK009 Intakekit
EHUK011 Drainkit
UHFK02 VerticaldistributionkitØ50mmMistral
EHRO012 Reverse osmosis system 12 l/h
EVHTP520 Humidityandtemperaturesensor,proprietarysignal
EVHP523 Humidity sensor with 4...20 mA output
0031000043 Inlet tube 8 mm (per metre)
EV3K61XLESRB Remoteuserinterface74x32mm,4touchkeys,two-lineLEDdisplay,24Vdcpowersupply

06/2022
| 11 |
924EHUCE4.00 - Mistral Humidier
2. TECHNICAL DATA
2.1 TECHNICAL SPECIFICATIONS
TYPE MU DESCRIPTION/VALUE
HUMIDITY PRODUCTION
Production capacity: kg/h 0.20...1.0
Maximum pressure:
Pa 1...70
Connection outside diameter: mm (in.) 50 (1.97)
Mist distribution
Mist distribution: --- See accessory UHFK02
Maximum air flow rate: m3/h 48
ELECTRICAL PROPERTIES
Power supply: V,Hz 100...240Vac,-15%/+10%,50/60
Power absorbed: W 110 maximum
Current draw: A 4.5 A
Auxiliary power supply: V 24 Vdc
Hydraulic properties
Supply water quality: --- SEE "5.2.1 WATER SPECIFICATIONS" ON PAGE 23
Supply water conductivity: μS/cm •0...100 (low maintenance)
•0...1250 (general operation)
Supply water hardness: °f •0...5 (low maintenance)
•0...40 (general operation)
Supply water pressure:
MPa (bar) 0.02...1 (0.2...10)
Minimum supply flow rate L/m 1
Supply water connection: --- JG 8 mm
Drain water connection: --- Ø10-12mm
Supply water temperature: °C/°F 1...40 °C (33.8...104)
Drain water temperature: °C/°F 1...60 °C (33.8...140)
General specications
Dimensions: mm (in.) SEE "4.3 DIMENSIONS" ON PAGE 15
Weight: kg ~1.4
Electrical compartment and fan IP protection
degree: --- 30
Regulation
Control type: --- Integrated
Control signal: ---
•ON/OFF
•0...10 V (or proportional)
•4...20 mA
Communication serial port
Serial port: --- 1 RS-485 Modbus RTU serial port
COMPLIANCE
CE certification: --- √

06/2022
| 12 |
924EHUCE4.00 - Mistral Humidier
2.2 I/O SPECIFICATIONS
Type Description
Analogue input: 1 configurable analogue input (CFG = 1...4 or CFG = 6...9)
Digital input:
1 digital input with a potential-free contact for enabling
humidification
1 configurable digital input (CFG = 0 or CFG = 5)
Digital output: 1 non-isolated low-voltage relay output
Analogue input specications
Default Resistive RH Current
4...20 mA
Voltage
0...10 V Digital input
IA1
Temperature alert
sensor
• • • •
Range --- -40...105 °C
(-40...220°F) 1%fullscale 1%fullscale ---
Solution --- 0.1°C(1°F) 0.1 0.1 ---
Input
impedance --- 10kΩ 100Ω 24kΩ ---
Digital output specications
Default Description Load (at 30 Vdc) Load type
Out1 Alert or command for
parallel operation SPDT 1 A Resistive

06/2022
| 13 |
924EHUCE4.00 - Mistral Humidier
3. RECEIVING THE PRODUCT
NOTICE
MALFUNCTIONING OF THE EQUIPMENT
• Droppingorshakingcandamagethehumidifierbeyondrepair.
• Tamperingwithorremovingtheidentificationstickersinvalidatesthewarranty.
3.1 CHECKING THE PACKAGING
• Makesurethepackagingisintact;
• Makesurethehumidierisintactupondeliveryandinformthecourierimmediately,inwriting,ofanyproblemscaused
bycarelessorimpropertransportation(acceptthepackageconditionally).
3.1.1 Opening the packaging
• Takethepackagetothehumidierinstallationsite;
• Openthecardboardpackaging;
• Removethehumidierfromthedie-cutseparator.
3.1.2 Checking the packaging contents
Thestandardproductpackagecontains:
• Mistralultrasonichumidier;
• Instruction sheet for:
• Mechanical assembly;
• Electrical connections;
• Start-up instructions;
• Switching power supply unit 100...240 Vac / 24 Vdc and wiring.

06/2022
| 14 |
924EHUCE4.00 - Mistral Humidier
4. MECHANICAL ASSEMBLY
4.1 BEFORE YOU START
Read this manual carefully before installing the system.
Inparticular,thesafetyinstructions,electricalrequirementsandcurrentregulationsforthemachineortheprocessinwhich
this device is involved must be observed. The use and application of the information contained herein requires experience in
thedesignandprogrammingofautomatedcontrolsystems.Onlytheuser,integratorormanufacturerofthemachinecanbe
familiarwithalltheconditionsandfactorswhichariseduringinstallationandconfiguration,operationandmaintenanceofthe
machineortheprocess,andassuchcanidentifytherelevantautomationequipmentandthecorrespondinginterlocksand
safety systems which can be used effectively and appropriately. When selecting automation and control equipment and other
connectedequipmentandsoftware,foraparticularapplication,youmustconsiderallapplicablelocal,regionalandnational
standards and/or regulations.
WARNING
REGULATORY INCOMPATIBILITY
Makesurealltheequipmentusedandthesystemsconformtoallapplicablelocal,regionalandnationalregulationsand
standards.
4.2 INFORMATION CONCERNING INSTALLATION AND THE SURROUNDING ENVIRONMENT
Beforecarryingoutanyworkontheequipment,readtheseinstructionscarefully,makingsureyouunderstandeverything.
DANGER
RISK OF ELECTRIC SHOCK OR ELECTRIC ARC
• Only use electrically insulated measuring devices and equipment.
• Do not install the equipment while the power supply is connected.
• Cutoffthepowersupplytoallequipment,includinganyconnecteddevices,andremovethepowerfusesbeforeremoving
anycoversorhatches,orbeforeinstalling/uninstallingaccessories,hardware,cablesorwires.
• AlwaysuseaproperlycalibratedVoltmetertomakesurethesystemispoweredoff.
• Themaintenance,repair,installationanduseoftheequipmentmustonlybeentrustedtoqualifiedpersonnel.
• Do not touch the unshielded components or the terminals while they are live.
• Do not modify the product.
• Do not expose the equipment to liquids or chemicals.
• Makesurethereisaneffectiveearthconnection;ifthereisnot,earththeequipment.
• Beforepoweringuptheequipment,checkallthewiringconnections.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
• Performthewiringcarefully,incompliancewithelectromagneticcompatibilityandsafetyrequirements.
• Makesurethewiringiscorrectfortheendapplication.
• Minimisethelengthoftheconnectionsasmuchaspossible,toavoidwindingthecablesaroundelectricallyconnectedparts.
• Beforeapplyingthepowersupply,checkallthewiringconnections.
• Donotconnectwirestounusedterminalsand/orterminalsmarkedwiththetext“Noconnection”(N.C.).

06/2022
| 15 |
924EHUCE4.00 - Mistral Humidier
4.3 DIMENSIONS
4.3.1 Dimensions of Mistral
262.75 (10.34)
mm (in.) 50 (1.97)
107.4 (4.23)
61 (2.40)
148 (5.83)
Fig. 2. Dimensions of Mistral
4.3.2 Dimensions of Mistral with box
140 (5.51)
150.6 (5.93)
120 (4.72) 120 (4.72)
349.1 (13.74)
mm (in.)
80 (3.15)
Fig. 3. Dimensions of Mistral with box

06/2022
| 16 |
924EHUCE4.00 - Mistral Humidier
4.3.3 Dimensions of Mistral with support bracket
mm (in.)
105.4 (4.15)
10 (0.39)
171.5 (6.75)
Fig. 4. Dimensions of Mistral with support bracket

06/2022
| 17 |
924EHUCE4.00 - Mistral Humidier
4.4 MINIMUM INSTALLATION DISTANCES
When installing the Mistralhumidifierinenclosedspaces,observetheminimumdistanceof500mm(19.68in.)oneachside,soas
to guarantee adequate ventilation and aeration of the system.
WARNING
MALFUNCTIONING OF THE EQUIPMENT
• Install the equipment in a position which ensures the minimum distances from all adjacent structures and equipment as
indicated in this document.
• Install all equipment in compliance with the technical specifications indicated in the relevant documentation.
4.4.1 Open space
500 (19.68) 500 (19.68)
mm (in.)
500 (19.68) 500 (19.68)
5
10
20
30
50
Fig. 5. Minimum installation distances
4.4.2 Enclosed space
In the case of an installation in an enclosed space (e.g. fan convector or integration in a technical product) ensure that there is
sufficient air circulation to avoid overheating and condensation.

06/2022
| 18 |
924EHUCE4.00 - Mistral Humidier
4.5 SUPPORT BRACKET
The Mistralhumidifiercanbeinstalledonawallwiththeaidofasupportbracketsuppliedasanaccessory(see"1.6
ACCESSORIES" ON PAGE 10).
4.5.1 Support bracket dimensions
Thefollowingillustrationshowsthedimensionsoftheoptionalsupportbrackettobeusedforwallmounting:
10 (0.39)
105.4 (4.15)
171.5 (6.75)
80
92
164
6.7 (0.26) 6.7 (0.26)
37.7
14.9
53.414.6
14.6
15
mm (in.)
Fig. 6. Support bracket dimensions
4.5.2 Precautions for mounting with a support bracket
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR FIRE
• Install the humidifier away from electronic equipment.
• Do not install the humidifier above electronic equipment.
DANGER
RISK OF ELECTRIC SHOCK
Makesurethereisaneffectiveearthconnection.

06/2022
| 19 |
924EHUCE4.00 - Mistral Humidier
4.6 METHOD OF MOUNTING WITH A SUPPORT BRACKET
Mounting
hooks
1
1 2 3
Fig. 7. Instructions for mounting with a support bracket
Instructions
• Securethesupportbrackettothewallfollowingtheinstructionsgiveninthepicture"FIG. 7. INSTRUCTIONS FOR
MOUNTING WITH A SUPPORT BRACKET" ON PAGE 19 and the dimensions of the holes and bracket given in the
subsection "4.5.1 SUPPORT BRACKET DIMENSIONS" ON PAGE 18 (1);
• Attach the Mistralhumidiertothebracket,makingsureitissecure( 2);
• Makeprovisionforanearthingconnectionviaeyeletterminalsbetweenthesupportbracketandthehumidier;
• Securethehumidiertothewall,wherethesupportbracketismounted,andtheearthingconnectionusinganM4at-head
screw,whichisappropriateforthexingwall(
3
).

06/2022
| 20 |
924EHUCE4.00 - Mistral Humidier
4.7 METAL BOX
The Mistral humidifier can be installed on a wall or on a supporting base with the aid of the metal box supplied as an accessory
(see "1.6 ACCESSORIES" ON PAGE 10).
4.7.1 Dimensions of metal box
The following illustration shows the dimensions of the optional metal box to be used for mounting on a wall or on a supporting
base:
140 (5.51)
150.6 (5.93)
120 (4.72) 120 (4.72)
mm (in.)
80 (3.15)
Fig. 8. Dimensions of metal box
4.7.2 Precautions for mounting with metal box
DANGER
RISK OF ELECTRIC SHOCK, EXPLOSION OR FIRE
• Install the humidifier away from electronic equipment.
• Do not install the humidifier above electronic equipment.
DANGER
RISK OF ELECTRIC SHOCK
Makesurethereisaneffectiveearthconnection.