Munters ML270 - Technical Data

DehumidierML180-MLT350
Appendix1Options
1.1General
TheML-seriesdehumidiersaredesignedsothatoptionalproductscanbeeasilyttedtothem.
Thisappendixcontainsinformationaboutalloptionalcongurationsandcomponentsthatcanbeadded
whenorderingMLdehumidiers.
NOTE!Voltagedropscanoccurwhenusingexcessivelylongcables.Ifthereislessthan20Vsupplyatthe
connectionpointsofthehumiditysensor(onthedehumidier),aseparaterelaycontrolledbythehumiditysensor
mustbeused.
1.2Runningtimemeter
Therunningtimemeterrecordsthetotalnumberofhoursthedehumidierhasrun.Thelasttwodigits
representapercentagepartofanhour.Therunningtimemetercannotbereset.
Example:0000475representsfourhoursand45minutes.
1.3Humiditycontrolsystem
1.3.1Introduction
MuntersRH98isahumiditycontrolsystemintendedforusewithMuntersdehumidiers.RH98controls
theairhumiditybyregulatingthepowertotheunitreactivationheater.
Thesystemcomprisesahumiditytransmitterandacontrolunit.Thehumiditytransmitterisatruetwo
wiretransmitter,whichispositionedwheretheairhumidityistobecontrolled,eitherintherelevantroom
orintheairduct.
Thecontrolunitsendscontrolsignalstothedehumidier.Thepowercontrolisperformedinoneortwo
steps.
Thesystemhasapotentialfreecontacttowhichanexternalalarmdevicecanbeconnected.
1.3.2Transmitter
Thehumiditytransmittersareavailableintwodifferenttypes,wallorductmounted.
Thehumiditytransmittersensoremitsasignalproportionaltotheairhumidity.
Thesignalisampliedandsenttothecontrolunitbycable.
Thehumiditytransmittersensorissensitiveandmustbehandledwithcare.
1.3.3Controlunit
Thecontrolunitcontainsacontroller,whichreceivesthesignalfromthehumiditytransmitter.The
controllerthensendsacontrolsignaltothedehumidierwhichdeterminesthereactivationheateroutput.
Thereisalsoanoperatorpanelwithadisplayonthecontrolunit.Duringnormaloperation,thedisplay
showsthecurrentmeasuredairhumidity.
Differentparameterscanbesetusingthepushbuttonsonthepanel.Examplesaresettingsforairhumidity,
controllerlimitsandalarmlimits.
34Options190TGB-1034-L1604