Installation; Hydraulic Unit Structure; Top; Front - Elsteam VEH Series Manual

5. INSTALLATION

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

5.1 Hydraulic unit structure

5.1.1 Top

• Steam outlet;

5.1.2 Front

• Water drain for connection to waste water drainage pipes (Ø 40 mm (1.57 in.));
• Tear resistant cable gland for power supply cables;
• 3/4"GASmalewatersupplyfitting.
• Electricalconnections(Fastons)forfillingsolenoidvalveandelectricdrainpump.

5.1.3 Rear

• Maximum level sensor connection.

5.2 Hydraulic installation

Forcorrecthydraulicinstallation,thefollowingshouldbeprovidedoutsidetheAHUandintheimmediatesurroundingsofthe
hydraulic unit installation site:
• A shut-off tap;
• Afiltersupplementingtheonealreadypresentinsidethesolenoidvalve;
• A pressure reducer (if the mains pressure exceeds1 MPa (10 bar)).
Ifusingmetalpipes,makesuretheyareproperlyearthed.
Donotusepre-existingsystempipeworkorusedmaterials.Onlyusethematerialssuppliedwiththeproduct.
NOTE:ifusingapressurereducer,makesureisiteffectiveanddoesnotcausedrasticpressuredropswhenthemainspressureisverylow.
MALFUNCTIONING OF THE EQUIPMENT
• The water supply must have a minimum pressure of 0.02 MPa (0.2 bar).
• Connect the solenoid valve to the mains using the hose supplied in order to reduce water hammer in the water supply to the
humidifier.
• Duringinstallation,takecarenottodamagetheplasticthreadonthesolenoidvalve.
• Hydraulic connection should offer access to the mechanical filter in the inlet solenoid valve to allow it to be cleaned.
• Connect the drainage circuit using exclusively the D40 mm (1.57 in.) pipes provided.
• IftheAHUisexposedtoatmosphericagents,fitheatingcablestothewatersupplyanddischargepipes.

5.2.1 Water specifications

• Water pressure between 0.02...1 MPa (0.2...10 bar) inclusive;
• Temperaturebetween1...50°C(33.8...122°F)inclusive;
• Conductivitybetween75...1250μS/cminclusive;
• Maximum water hardness between 5...50 °f.
NOTE:higherwaterhardnessorahigherleveloforganicmatterdoesnotprecludeproperequipmentoperation,nevertheless
these factors mean that more frequent maintenance will be required.
What should you do?
• Letthewaterflowthroughthedrainforafewhoursbeforemakingthefinalconnection.
•  C hecktheretentionstatusofthehydrauliccircuitregularlytopreventfaultsandconsequentwaterleakageintotheroom.
• Make surethehydraulicunitisalwaysinstalledwithinacondensatecollectiontankwithdrainage.
What should you NOT do?
• Soften the water. Ifthewaterhardnessisover50°forifthehardnesslevelrequiresfrequentmaintenance,use
demineralisedwatermixedwithdrinkingwaterinapercentagethatensuresminimumconductivityof200μS/cmand
hardness of at least 10 °f
MALFUNCTIONING OF THE EQUIPMENT
• Do not use softened water.
• Oncethehumidifierhasbeeninstalled,lettheremainingwaterinthepipesflowouttopreventthefilterfrombecomingclogged.
• Makesurethehumidifierpartsareperfectlyintact.
• Ifanyofthehumidifierpartsarenotintact,donotproceedwithinstallation.
924VHE4.02 - VEH series humidifiers
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NOTICE
NOTICE
| 17 | 02/2022