FScurtis RNP75 - INSTALLATION; Ambient Air Temperature Requirements; Location and Clearance Guidelines; System Arrangement and Piping

3
Compressor
Oil Removal
Filter
Aftercooler
Automatic Drain
Dryer
Separator
Receiver
TYPICAL COMPRESSED AIR SYSTEM
INSTALLATION
Ambient Air Temperature
Locatethedryerindoorswheretheambientairtemperature
willbebetween45°Fand110°F.Intermittentoperationat
ambient temperatures up to 113°F will not damage the dryer
but may result in a higher dew point or dryer shutdown
duetohighrefrigerantdischargepressure(seeFieldService
Guide).
Donotoperateair-cooleddryersatambientairtemperatures
below40°F.Suchoperationmayresultinlowsuction
pressure,causingfreeze-up.
Location and Clearance
Mountthedryeronalevelbase.Ifthebasevibrates,bolt
theunitdownusingvibrationdampeners.Ifthedryeris
air-cooled,installitinaclean,well-ventilatedareatoreduce
foulingofthecondensercoilswithdirtanddust.Allowat
least24inchesclearanceonthesidesandthefrontofthe
dryerforcoolingairowandforserviceaccess.
System Arrangement
Liquidwaterintheinletairwilladverselyaffectthe
performanceofthedryer.Installthedryerdownstreamofan
aftercoolerorseparatorsothatthetemperatureofthedryer
inletairdoesnotexceed120°Fandtheinletairdoesnot
contain any liquid water.
Ifthecompressedairowisrelativelyconstantanddoesnot
exceedthedryerowrating,itisrecommendedthatthe
dryerbelocateddownstreamofthereceivertank.Ifthe
natureoftheapplicationissuchthattheairdemandregularly
exceedsthedryerowrating,itisrecommendedthatthe
dryerbelocatedupstreamofthereceiver.
Forsafetyandconvenience,installinletandoutletshutoff
valvesanddepressurizationvalves.Thesevalvesallowthe
dryertobeisolatedanddepressurizedforservicing.Bypass
pipingmaybeinstalledaroundthedryerforuninterrupted
airowwhenthedryerisserviced.Ifthecompressedair
operationcannottolerateundriedairforshortperiods,install
a second dryer in the bypass line.
Compressedairsystemscommonlyrequirelterstoremove
compressoroils,particulates,condensedliquidsandother
contaminants.Whenanoil-removallterisused,itshould
beinstalleddownstreamoftherefrigerateddryer.At
thislocation,thelifeofthereplaceablelterelementis
prolongedsincesomeoftheentrainedoilisremovedbythe
dryer and drained through the separator.
Piping and Connections
Pipingmustbefurnishedbytheuserunlessotherwise
specied.Connectionsandttingsmustberatedforthe
maximumoperatingpressuregivenonthedryerdataplate
andmustbeinaccordancewithapplicablecodes.Support
allpiping;donotallowtheweightofanypipingtostressthe
dryerorlterconnections.Inletandoutletshutoffvalvesand
avalvedbypassvalvearerecommended.Pipingshouldbeat
leastthesizeoftheinletandoutletconnectionstominimize
pressuredropintheairsystem.SeeEngineeringDatasection
fordryerinletandoutletconnections.
Removing Condensate
Condensatemustbedrainedfromthedryertopreventre-
entrainment. The dryers are equipped with automatic drain
valves and internal drain hoses up to the drain connections
on the dryer cabinets. The user must install a separate
dischargelineatthedrainconnectiontocarryoffcondensate
to an environmentally approved condensate collection/
disposalsystem.Pipingorcoppertubing1/2inchorlarger
isrecommendedforcondensatedischargelines.Installthe
drain lines so that condensate can be seen as it drains.
Electrical Connections
ThedryersareconstructedaccordingtoNEMAType1
electrical standards. Field wiring must comply with local and
nationalre,safetyandelectricalcodes.Installationmust
beinaccordancewiththeNationalElectricalCode.Conrm
that your line voltage is the same as the voltage listed on the
dryerdataplate.RefertoFigure1forelectricalschematics.
Operation of dryers with improper line
voltage constitutes abuse and could affect the dryer
warranty.