Daikin EWAD360TZ-SLB1 [13/104] Options

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Variable Primary Flow(opt. code 143)

By selecting opt. 143 the chiller can manage the Variable Primary water flow according to the differential

pressuremeasured in aspecific pointof the plant,selected bythe plant designer). Thedifferential pressure

transducer,isavailableasoptionfromthefactrory(opt.code144).Onceplacedontheplantthedifferential

pressuretransducermustbeconnectedtotheunit.Asalternativetheunitcontrollercanreceivedirectlythe

differentialpressurevaluefromanexternalBMScommunicatingwiththestandardscommunicationsprotocols

(eg.MODBUS).

Abypassline(fieldsupply)needstobeinstalledwhichguaranteesthatatalltimestheminimumwaterflowof

thechillerissupplied(refertothe“Operatinglimit”chapterforindicationonminimumwaterflow).Thebypass

valve will be an ON/OFF normally closed valve controlled by the chiller. In case the minimum water flow

allowedisnotreached,thechillerwillopenthebypasslinerestoringthewaterflowabovetheminimumvalue.

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Incaseofmultipleunitsinstallationsinaprimaryonlyplantoperatingwithvariableflowcontactfactory.

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Hydronic options summerizing table

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13/104

OPTIONS