Specifications

Appendix-b Cooling System Help
November 11, 2013
b‐2
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b.2 Plumbing System Installation
b.2.1 Materials needed
• Mappgastorchset
• ExtraMappgastanks
• Weldersmaskorgoggles
• Tubingcutterfor2.5inchtubing(ahacksawmaybeused insteadofthetubingcutter)
• Flux(StayCleanFlux)orequivalent(Harrispartnumber0860004040;one16ozbottleprovidedwithplumb‐
ingkit)
• Softsilversolder(96.5%tin;3.5%silver)suchasAladdin#450(Harrispartnumber0860004038)isneeded.
Three1lbrollsof1/16inchsoftsi lversolderissuppliedwithplumbingkit.1/8inchsilversolder(Harrispart
number086‐0004‐047)isalsoavailable.
• Wirebrushandrags
• Waterhose
• Threadrod,angleironorchannelandhangersneededtosupport theplumbing
• Tubingcutterorahacksaw(alwaysde‐burtheline(removeanyroughpointsorflared‐inedgesatthecut
aftercutting)
Warning
TEMPERATURE OF THE HEATED LINE IN THE FOLLOWING STEPS IS QUITE HIGH.
PRECAUTIONS MUST BE TAKEN TO AVOID CONTACT WITH EXPOSED SKIN.
b.2.2 Pipe Sizing and Routing
Ifatypicalsystemlayoutisnotused,thetypicalplumbinglayoutshouldstillbeconsultedforpipesizeinformation
andconnectiondetailsandtechniquesattheamplifiercabinets,RFloads,pumpmoduleandoutsideheat
exchanger.Acustomplumbinginstallationmustnotundulyrestrictflowratesorchangethedesign
ofthecooling
system.Locatetheplumbingsothataccesstotransmittersystemcomponentsisnotrestricted.
Note
Pipes must be sized no smaller than shown on the typical plumbing layout drawing. Their routing should
minimize turns and long runs.
Ifadditionalamplifiercabinetsaretobeaddedtothesysteminthefuture,considertheseplanswhensizingand
layingoutthecoolingsystem.Doingsonowmayslightlyincreasetheinstallationcost,butwillgreatlylowerthecost
ofconversionlater.
Theplumbinglinesmustbetype“M”harddrawncopperwithsoftsilversolderedjoints(96.5%Tin,3.5%Silver;
Aladdin#450silversolderorequivalent).Anadequateamountofsoftsilversolder(Harrispart086‐0004‐038)is
suppliedwiththeplumbingkit.Goodsilverbrazedjointsareacceptablebutnot
required.Apoorlydonebrazedjoint
ismuchhardertorepairthanasoftsilversolderjoint.
b.2.3 Standard Coolant Plumbing Practices
Goodplumbingequipmentinstallationpracticeisrequiredtoensuresystemintegrity.Appropriatelymeasured,cut,
deburred,supportedandsolderedcopperpipesections,facilitatemechanicalintegrityofthecoolanttransportation
system.The“glue”thatholdsthesystemtogetherisqualitysoldering.
Thisprocessincludesthe needtoconditionallsurfacestobesolderedbythoroughcleaningwithemeryclothora
non‐sudsingscouringpad,withanevenapplicationofflux,liquidfluxbeingpreferred.Thisappliestoallcommon
surfacesofplumbingfittingsandstraightpipesections.Anyimproperlycleanedand
poorlyfluxedsurfaces,either