Elsteam VEH Series User manual

924VHE4.02 - 02/2022

VEH Series

Immersed electrode humidiers for air handling units

WARNING

Make sure you read and fully

understand the user manual before

using this device.

Non-observance of these

instructions will result in death or

serious injury.

CONTENTS

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IMPORTANT INFORMATION.............................................................................................................. 5

IMPORTANT SAFETY INFORMATION................................................................................................ 6

SAFETY INFORMATION RELATING TO THE PRODUCT..................................................................... 7

1. INTRODUCTION............................................................................................................................... 8

1.1 Description.............................................................................................................................................. 8

1.2 Applications ............................................................................................................................................ 8

1.3 Main features ......................................................................................................................................... 8

1.3.1 Electronic control features........................................................................................................................8

1.4 Accessories ............................................................................................................................................ 9

2. TECHNICAL DATA.......................................................................................................................... 10

2.1 Technical specications......................................................................................................................10

3. RECEIVING THE PRODUCT ........................................................................................................... 11

3.1 Checking the packaging.......................................................................................................................11

3.1.1 Opening the packaging..............................................................................................................................11

3.1.2 Checking the packaging contents............................................................................................................11

4. DIMENSIONS AND MECHANICAL ASSEMBLY........................................................................... 12

4.1 Dimensions ...........................................................................................................................................12

4.1.1 Hydraulic unit.............................................................................................................................................12

4.1.2 Electric panel.............................................................................................................................................12

4.2 Installation............................................................................................................................................13

4.2.1 Minimum installation dimensions............................................................................................................13

4.3 Installation............................................................................................................................................14

4.3.1 Electric panel installation instructions...................................................................................................15

5. INSTALLATION .............................................................................................................................. 17

5.1 Hydraulic unit structure .....................................................................................................................17

5.1.1 Top ..............................................................................................................................................................17

5.1.2 Front ...........................................................................................................................................................17

5.1.3 Rear ............................................................................................................................................................17

5.2 Hydraulic installation...........................................................................................................................17

5.2.1 Water specications.................................................................................................................................17

5.3 Water drainage system .......................................................................................................................19

5.3.1 Connection specications........................................................................................................................19

5.4 Steam distribution in the AHU ............................................................................................................19

6. ELECTRICAL CONNECTIONS........................................................................................................ 20

6.1 Before you start ...................................................................................................................................20

6.2 Connection best practice ....................................................................................................................20

6.2.1 Wiring best practices................................................................................................................................20

6.2.2 Cable glands and cable routing................................................................................................................22

6.2.3 Replacing fuses - Fuse box .......................................................................................................................23

CONTENTS

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6.3 Wiring diagram .....................................................................................................................................24

7. USER INTERFACE AND INITIALISATION ................................................................................... 25

7.1 User interface.......................................................................................................................................25

7.1.1 Humidier on/off switch ..........................................................................................................................25

7.1.2 Main screen display with external humidity control (ON/OFF or 0...10 V)..........................................25

7.1.3 Main screen display with internal humidity control (4...20 mA)...........................................................25

7.2 Keys .......................................................................................................................................................26

7.3 Menu......................................................................................................................................................26

7.3.1 Switching on/off .......................................................................................................................................26

7.3.2 Language....................................................................................................................................................26

7.3.3 Humidity control ........................................................................................................................................26

7.3.4 Emptying time ............................................................................................................................................26

7.3.5 Water ll time.............................................................................................................................................27

7.3.6 Water drain time........................................................................................................................................27

7.3.7 AT coefcient.............................................................................................................................................27

7.3.8 Water change interval ..............................................................................................................................27

7.3.9 Manual water drainage ............................................................................................................................27

7.3.10 Nominal current setting .........................................................................................................................27

7.3.11 Wash time ................................................................................................................................................27

7.3.12 0-10 V signal calibration coefcient......................................................................................................27

7.3.13 DP Enabling ..............................................................................................................................................27

7.3.14 ModBus Address.....................................................................................................................................27

7.3.15 ModBus Speed.........................................................................................................................................27

7.3.16 Empty Tank Test ......................................................................................................................................27

7.3.17 Drain due to inactivity time ....................................................................................................................27

7.3.18 RTH ramp..................................................................................................................................................27

7.4 Power-up and start-up .........................................................................................................................28

8. OPERATION.................................................................................................................................... 29

8.1 How it works... ......................................................................................................................................29

8.2 Manual water drainage .......................................................................................................................29

8.3 Switch-off procedure due to extended period of inactivity 29

9. MODBUS RTU FUNCTIONS AND RESOURCES............................................................................. 30

9.1 Introduction..........................................................................................................................................30

9.2 Modbus message structure................................................................................................................30

9.3 Modbus functions and registers ........................................................................................................30

9.3.1 Available Modbus commands and data areas .......................................................................................31

9.4 Address conguration.........................................................................................................................31

9.5 Connections ..........................................................................................................................................31

9.6 Modbus tables content ........................................................................................................................31

CONTENTS

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9.7 VEH Modbus addresses....................................................................................................................... 32

9.7.1 Table of Modbus addresses .....................................................................................................................32

10. DIAGNOSTICS ............................................................................................................................. 33

10.1 Table of Alarms and Solutions ..........................................................................................................33

11. MAINTENANCE............................................................................................................................ 34

11.1 Introduction .......................................................................................................................................34

11.2 Regular cleaning of the product and its components ....................................................................35

11.3 Cleaning the boiler .............................................................................................................................35

Cleaning the optional STAINLESS STEEL discharge tank (VI accessory) 35

Replacing the electrodes............................................................................................................................35

Opening the electric panel..........................................................................................................................35

12. SPARE PARTS .............................................................................................................................. 37

12.1 Hydraulic unit .....................................................................................................................................37

12.2 Electric panel......................................................................................................................................38

13. WIRING DIAGRAMS................................................................................................................... 39

13.1 4-Electrode models ............................................................................................................................39

13.2 7-Electrode models ............................................................................................................................40

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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 inside the air treatment unit (AHU).

Thedevicemustbeinstalledandusedinaccordancewiththeinstructionsprovidedand,inparticular,hazardouslivepartsor

highly pressurised water 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.

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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.

Thissymbolisusedtoindicateariskofseriouspersonalinjury/burns.

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.

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SAFETY INFORMATION RELATING TO THE PRODUCT

VEH series humidifiers are defined as "NOT ACCESSIBLE TO THE PUBLIC".

Beforecarryingoutanyworkontheequipment,readtheseinstructionscarefully,makingsureyouunderstandeverything.

DANGER

RISK OF ELECTRIC SHOCK, EXPLOSION 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,beforeremovinganycoversorhatches,or

beforeinstalling/uninstallingaccessories,hardware,cablesorwires.

• Providesafetyinterlocks(isolators)ofasuitablesizebetweenthepowersupplyandthehumidifier,withacontactopening

distance of at least 3 mm for each pole.

• 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open,disassemble,repairormodifytheproduct.

• Do not expose the equipment to liquids or chemicals.

• Makesurethereisaneffectiveearthconnection.

• Before applying voltage to the equipment:

• Makesureallprotectiveelements,suchascovers,hatchesandgrilles,arefittedand/orclosedusingatool(e.g.a

spanner).

• Checkall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”.

WARNING

MALFUNCTIONING OF THE EQUIPMENT

• Performthewiringcarefully,incompliancewithelectromagneticcompatibilityandsafetyrequirements.

• Carry out a full start-up test.

• 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.”).

Thehumidifierproducessteamat100°C(212°F)anddischargeswateratatemperatureofapproximately98°C(208.4°F).

WARNING

HOT WATER VAPOUR

Do not touch the equipment while it is running.

WARNING

RISK OF BURNS

Beforecarryingoutanyworkonthesystem,placetheequipmentoutofserviceandwaitforthemachinetocooldown(<50°C

(122°F)).

WARNING

REGULATORY INCOMPATIBILITY

Makesurealltheequipmentusedandsystemsdesignedconformtocurrentlocal,regionalandnationalstandards.

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1. INTRODUCTION

1.1 Description

The VEH series is ELSTEAM’s solution for immersed electrode humidification systems dedicated to installations within air

handling units (AHUs).

The VEH series consists of 2 elements:

• Electric panel;

• Hydraulic unit.

VEH series humidifiers generate humidity (steam) by means of a current passing between 4 or more electrodes immersed in

drinkingwaterandbringingittoboilingpoint.

Thesteamiscontrolledbyadjustingtheintensityofthecurrenttransferredtothewaterbytheimmersedelectrodes,which

indirectly controls the boiling of the water.

Steam is produced and pumped directly into an AHU (air handling unit) or into an air conditioning duct by positioning the

hydraulic module inside the unit.

VEHserieshumidifiersdonotrequireatechnicalareaifinstalledoutdoors,asthehydraulicunitisinstalledinsidetheAHU;

plus,itisnotaffectedbycondensationinthesteamsupplypipe,asitintroducessteamfromthehydraulicunitdirectlyinto

theAHU,alsoovercomingdifferencesinpressure.Thehydraulicunitisnotsubjecttodropsinenergyefficiencycausedby

condensation and low outdoor temperatures.

Topreventtheicefromformingduringwinter,useheatingcablesforthewatersupplyanddischargepipes.

NOTE: VEH series humidifiers are defined as "NOT ACCESSIBLE TO THE PUBLIC".

1.2 Applications

The VEH seriesismainlyusedinapplicationsrequiringsterilesteam,including:

• Hospital settings;

• Medical settings;

• Commercialsettings(ofces,industrialpremises,etc.);

• Industrial processes which use AHUs.

1.3 Main features

• Isothermalhumidier;

• Sterilesteam(steamwithatemperatureofapproximately100°C(212°F));

• Automatic removal of limescale from the electrodes and boiler (reusable);

• Broadrangeofsteamproduction(10...100kg/h);

• Integratedelectroniccontrolviaprobeorhumidistat(withexternalON/OFFsignal,orproportionalmodefromexternal

signal0...10V/4...20mAorinternalconguration);

• Stainless steel water drainage tray (on request);

• StainlesssteelcondensatecollectiontankforAHUs(onrequest).

1.3.1 Electronic control features

• Proportional (logarithmic) microprocessor control of steam production;

• Highefciency;

• Rapid response to changes in requirements;

• Precise production control.

• Automatic electrode and boiler cleaning system:

• Reduced maintenance frequency;

• High performance levels;

• Longer electrode and boiler life.

• Automatic hydraulic unit discharge:

• Removaloflimescaleresiduesdepositedinthemanifoldsleevefacilitatedbytheactionofthedrainagepump,which

can even eliminate medium-sized clusters and grind them down;

• Longer boiler life.

• Operatingstatussignallingviaauserinterfacewitha2-line,16-characterdisplay:

• Continuous monitoring of the operating status;

• Automatic analysis of malfunctions.

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1.4 Accessories

The following accessories for use with VEH series immersed electrode humidifiers are available:

P/n Description

VEHK07 VEHhydraulicunitremovalflangekit

VEHK08 D40drainageunitkit

VEHK16 5mpowercablekitforrunningfromelectricpaneltohydraulicmoduleVEH10-20-30-40

VEHK17 5mpowercablekitforrunningfromelectricpaneltohydraulicmoduleVEH60-80-100

VEHK26 Hydraulicconnectionsfeedthroughkit

VEHK30 Filling/dischargeunitkitexternaltoAHU

0031000048 3/4"GFemalewaterinlethose

VI Water drainage tray

0016020018 Condensatecollectiontank490x690x70AISI304

0016020019 Condensatecollectiontank490x950x70AISI304

0016020020 Condensatecollectiontank490x1350x70AISI304

EVHP523 Humidity probe 4...20 mA

EVTPNW630F200 NTCtemperatureprobe,IP68

EV3411M7 Universalcontroller,1output,230Vacpowersupply

924VHE4.02 - VEH series humidiers 02/2022

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2. TECHNICAL DATA

2.1 Technical specifications

Description MU VEH10XS VEH20•• VEH30• VEH40• VEH60•• VEH80L

VEH100XL

Steam production

Production capacity kg/h 10 20 30 40 60 80 100

Pressure limits Pa/bar There are no pressure limits (*)

Electrical properties

Power absorbed kW 7.5 15 22.5 30 45 60 75

Power supply V,Hz 400Vac,50/60

Phases Ph 3

Absorption per phase A 11 22 32 43 65 87 108

Hydraulic properties

Supply water quality --- See section "5.2.1 WATER SPECIFICATIONS" ON PAGE 17

Supply water conductivity μS*cm 70…1250

Supply water hardness °f 5...50

Minimum supply flow rate l/h 300

Supply water pressure

MPa/bar

0.02...1/0.2...10

Supply water connection --- M 3/4" GAS

Water drain outer diameter

mm (in.) 40 (1.57)

General specications

Dimensions mm (in.) See section "4.1 DIMENSIONS" ON PAGE 12

Weight (hydraulic module) kg 15 18 20 24 26 31 33

Electric panel IP protection degree --- IP54

Hydraulic module IP protection

degree --- IPX0

Maximum installation altitude m (ft.) ≤2000(6561.6)

Regulation

Control type --- Integrated or remote

Control signal --- Integrated: 4...20 mA

Remote: Proportional(0...10V),ON-OFFor(0...10V/4...20mA)

Compliance

CE --- Yes,withself-certification

NOTE: The • symbol indicates that the data applies to every p/n; for further information please contact the ELSTEAM sales

office.

(*): Steam production occurs inside the AHU and therefore under equivalent pressure conditions.

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