User guide

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Corporate Office: 724.584.5500  Instant Access 24/7 (Parts and Service): 800.458.1960  Parts and Service: 814.437.6861
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SystemFluidFreezeProtection
Forapplicationswheresystemfluidwillbeexposedtoambientconditionsof32°F(0°C)or
colderand/orthesetpointofthesystemwillbebelow45°F(7.2°C),antifreezemustbeadded
tothesystemfluidtoprotectthechillerandsystempipingfrompotentialdamage.Theamount
ofantifreezewillvarydependingontheactualdesiredoperatingconditionsandshouldbe
enoughtoprovidefreezeprotectiontotemperatures15°F(8.3°C)colderthanthecoldest
temperatureanticipated.Useonlyantifreezesolutionsdesignedforheatexchangerduty.Do
notuseautomotiveantifreezeduetothepotentialforfoulingthatcanoccuronceitsrelatively
short‐livedinhibitorsbreakdown.
InterconnectingRefrigerantPiping(EP2RModelsOnly)
Thechillerisshippedwithanitrogenholdingchargeandhasafullchargeofoil,excludingthe
additionalchargeforfieldpiping.Properevacuationisrequiredpriortochargingwith
refrigerant.Thechillerisforuseonlywiththeair‐cooledcondenserprovidedwiththeunit.The
followingsectioncoverstherequiredpipingbetweenthechillerandtheprovidedair‐cooled
condenser.
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Capsarelocatedonthedischargeandliquidlines.Theselinesizesdonotnecessarilyreflectthe
actuallinesizesrequiredforthepipingbetweenthechillerandtheair‐cooledcondenser.The
installingcontractorneedonlyprovidetheinterconnectingpipingbetweenthechillerandthe
air‐cooledcondenser.
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Refrigerantpipingsizeandpipingdesignhasasignificanteffectonsystemperformanceand
reliability.Forspecificpipesizingandconfiguration,refertotheEP2RSeriesChillerRemoteAir‐
CooledCondenserInstallationGuidelinesManual.Allpipingshouldconformtotheapplicable
localandstatecodes.Userefrigerantgradecoppertubingonlyandisolatetherefrigeration
linesfrombuildingstructurestopreventtransferofvibration.Donotuseasawtoremoveend
caps.Thismightallowcopperchipstocontaminatethesystem.Useatubecutterorheatto
remove
thecaps.Whensweatingcopperjointsitisimportanttoflowdrynitrogenthroughthe
system.Thispreventsscaleformation.Donotusesoftsolders.Forcopper‐to‐copperjointsuse
aphos‐coppersolderwith6%to8%silvercontent.Useahighsilvercontentbrazingrodfor
copper‐to‐brassorcopper‐to‐steeljoints.Onlyuseoxy‐acetylenebrazing.
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