Specifications

Maxiva ULX Series
November 11, 2013
2‐7
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
pressuredropacrossthepairofdevicesisgreatlymultipliedovertherestrictionofindividualdevices.Turbulence
causingdevicesinclude,butarenotlimitedtoelbows(45and90degree),tees,ballvalves,gatevalves,globevalves,
flowsensors,pipediameterchanges,andetc.Tominimizetheeff ectsofanyturbulence
causingdeviceaddedtothe
coolantplumbingsystem,agoodruletofollowistohave10diameterlengthsofstraightpipebetweenturbulence
causingdevices.Thiswillallowtheturbulencetodissipateandtheflowtoagainbecomeuniform.Thiseffect,called
“staticpressureregain”,willcanceloutmuch
oftheflowrestrictionandpressuredropcausedbytheturbulent
device.
Note
If any of these restrictions cannot be met, a site-specific modification may be required. Contact your Har-
ris Broadcast representative for modifications.
Allfluidpipingpracticesshouldbeinaccordancewithlocalcodes.Standardinstallationswilluseheavydutyhosefor
connectingthetransmittertotheheatexchangerandpumpmodulebutcopperfieldpipingusingtypeM,hard
drawncopperpipeandsweatjointsmadewithsoftsilversolderisanacceptable
alternative.
Note
Piping materials such as steel, galvanized steel, cast iron, brass or plastic should not be used. Do not use
any type of galvanic piping or components in the ULX cooling system.
Whenevercomponentsmadefromelectricallydissimilarmaterialsareusedinasystem,usedielectricisolationof
thematerialstohelppreventgalvaniccorrosion.Allthreadedpipeconnectionsmustbesealedandanyflanged
connectionsgasketed;useasealantorTeflontapeonthreadedconnectionsortheglycol/watersolutionwillleak.
Correctsizingofpipeorhoseiscriticaltoassuresmoothoperationandkeepoperatingcoststoaminimum.
Calculationoftotalsystemfrictionpressurelossdeterminesoptimumpipesize.Forclosed‐loopsystems,donot
includethestaticheadpressureofthesystempiping,asequalandoppositeforcescancel
outupwardand
downwardflow.Allelbows,tees,valvesandsystemcomponentpressuredropsmustbeconsideredwhen
determiningpipe/hosesize.Pumpselection atratedflowisbasedon150feettotallength.Refertoinstallation
drawingsforrecommendedpipeandhosesizes.
Properuseofvalves(gatetype,balltypeorglobetype)isrequiredtoallowforisolationofcomponents(bypassing)
intheeventofmaintenancetoreduceclosedcircuitsystemglycol/waterloss.Bypassingofthetransmittercabinets
isalsodesirabletoavoidcontaminationofthetransmitterduringini tialcoolantsystemflushing.
InstallcomponentsasdescribedintheLiquidCoolingSystemdiagram.Globeorballvalvesshouldbeusedinthe
supplysideofeachcabinet.Globevalvesallowforfineadjustmentofcoolantflowthroughcomponents.Gateorball
valvesshouldbeusedonthereturnlinesideofcabinetsandcomponent.
Caution
COOLANT VALVES SHOULD BE OPENED AND CLOSED SLOWLY TO
PREVENT PRESSURE SURGES IN THE COOLING SYSTEM.
Thepumpmodulehasa1/2”NPTfilland drainvalves(3/4"femalegardenhoseconnections).Anairpurgerand
automaticairvent(returnside)areincorporatedintotheunitforremovalofairbubbles,whichareinducedinthe
systemduringfilling . Additionalairbubbleswillcontinuetobepurged
andventedasthesystemoperatesathigher
temperatures.
Thesystemairpurgeristypicallypartofthebypassassemblyandislocatedinsidethebuilding,preferab lywithin
viewofthetransmitter,atthehighestpointoftheplumbinginstallation.Thesystemairpurgermaybeequipped
withasightglasstoallowtheoperatortomonitorcoolantleveland
formationofairbubblesthatmayindicatethat
thesystemneedstobechargedwithadditionalcoolant.Drainvalvesshouldbelocatedatalllowpointsinthe
systemtoallowthesystemtobefullydrained.
STEP 1 Installsupplyandreturnplumbing .Carefullylocateandsolder(copper
fittings)orclamp(hoses)drain/ventvalves,plugs,meters,elbows,adapters,
andfittings,tothetransmitter,pumpmodule,heatexchanger,filter,rejectand
testloadsaccordingtothedrawings(see"
"sectionformoreinfo).Supplyand
returnhoseshouldbeinstalled withoutsharpbends.Hoseshouldbe
supportedfrequentlytoavoidexcessivemovementaspumpsturnonandoff.
Hoseshouldbesupportedusingpaddedclampsorpreferablyacabletray.