Coastal Climate Control Guardian User manual

Guardian - System Monitor and Speed Control
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Description:TheCoastalGuardiancomprisesapanelmeasuring5”wx2”hthatincorporatesaCoastalMKIIDigital
Thermostat/Thermometer,acompressorspeedadjustmentknob,andadiagnosticfaultLED.Thepanelissuppliedwith
a10’thermostatsensoranda10’controlcablethatconnectstoaDanfosscompressorcontroller.IfaMerlin SSCis
installedonthecompressorcontroller,“AUTO”settingwillgiveautomaticspeedcontrol,otherwisetherewillbeno
automaticspeedcontrolcapability.APowerTerminalMultipliercircuitboardisincludedtofacilitateeasypower
connectionstotheDanfosscontroller,anda2ampin‐linefuseisinstalledinthepositivepowerfeedwire.Standard
modelisforoperationon12vpowersuppliesonly.24vversionsavailableonrequest.
Location:Thepanelisdesignedtobemountedonaverticalsurface,securedbythefourscrewsprovided.Care
mustbetakentoensurethatthelocationchosenwillnotsubjectthepaneloritscomponentstosplashingorrunning
water,steam,corrosivegasses,excessivevibration,orphysicaldamage.Ideallythelocationwillallowthe10’thermostat
sensorandcontrolcabletobeinstalledwithoutbeingextended.Ifitisnecessarytoextendeithercable,theelectrical
jointsshouldbesoldered.Thepanelrequiresacut‐outmeasuring4.5”x1.5”,andadepthof3”.
Installation:ThePowerTerminalMultiplieristobeinstalledonthetoptwoterminalsoftheDanfosscontroller.This
providestwosetsof+and–terminals:onesetfortheincoming12vpowerfeedfromthedistributionpanelviaa
breaker,andoneforthepowersupplytotheGuardian.EnsurethatthefemaleconnectorsonthePowerTerminal
Multipliermatecorrectlywiththemalepins.TheGuardianpanelisthenmountedandsecuredandthethermostat
sensorandcontrolcablesruntotheirrespectivelocations.ThecontrolwiresconnecttotheDanfosscontrollerasshown
below.Thethermostatsensorshouldideallybelocatedatmid‐heightinthebox,andnotonawallthathasanyportion
ofanevaporatormountedonit.Thesensorshouldbeisolatedfromtheboxwallwithaplastictieorsimilar.
Wiring:
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T
P
C
D
F
+
+
12vor24vPower
Supplyinput
12vswitchedoutputfor
FanorPumpRelay
DanfossStandard101N0210 Com
p
ressorController
CabletoGuardian
p
anel
PowerTerminalMultiplier
Black
Red
Green
Blue
Orange
Over:
Brown
White
Note1
Note2
NOTES:
1–IfMerlinSSCfitted,BlueandOrange
wiresplugonto“C”and“T”onMerlin.
2–BrownandWhitewiresarespareandnot
usedonstandardinstallations.Thesemaybe
usedasswitchedwiresfromaseconddigital
thermostatforaspilloverfan,etc.
Fuse

Guardian - Operation
Operation:TheCoastalGuardianperformsthreefunctions:
1. Controlsanddisplaysrefrigeratororfreezerboxtemperatureandcompressoroperationalstatus.
2. Providesforautomaticormanualcompressorspeedcontrolformaximumpossiblesystemefficiency.
3. Givesaudibleandvisualindicationoftemperatureanomaliesandsystemmalfunction.
1. TheCoastalMKIIDigitalThermostat/Thermometerispre‐installedandsettoworkasarefrigeratorcontrol
withasetpointof40degreesFahrenheit.Refertoseparateinstructionsheetfordetailsonhowtoadjusttemperature
setpoint,differential,temperaturescale(ForC),andalarmthresholds.
2.Compressorspeediscontrolledbyadjustingtherotaryknob.Wheninthe“AUTO”positionandwithMerlin
SmartSpeedControllerinstalled,thecompressorwillautomaticallyrunatthemostefficientspeed,andchangingthe
knobpositionduringthatcyclewillhavenoeffect.Ifamanualspeedisset,thecompressorwillrunatthatspeedonthe
nextstart‐up.WithoutMerlinSSCinstalled,the“AUTO”settingisnon‐operationalandwillbecomethelowestspeed
setting.Thelowestspeedshouldbesetsothat:(a)theboxmaintainsthedesiredtemperature,and(b)thecompressor
runsforbetween30and45minutesinthehour.Theprinciplebehindcontrollingcompressorspeedbeingthatthe
longerandsloweracompressorcanberun,themoreefficientitwillbeandthelesspoweritwillconsumeoverall.
3.TheDiagnosticLED,labeled“FAULT”,willdisplayaflashingerrorcodeofbetweenoneandfiveflashes
dependentonthenatureofthefault,aslistedbelow.Eachflashingerrorcodecycleisrepeatedevery4seconds.When
afaultisdetected,thecompressorwillstopbutthefanorwaterpump,ifapplicable,willcontinuetorun.Are‐startwill
beattemptedapproximatelyevery60‐90seconds.Thefanorwaterpumpwillstopduringrestartattempts.
OneFlash–Indicateslowvoltage.VoltageatterminalsontheDanfosscontrollerhasdroppedtolessthan10.4v.
Voltagemustthenriseabovethecut‐involtageof11.7vbeforethecompressorwillattemptare‐start.NOTE:If
initialpowerappliedatstart‐upislessthan11.8volts:NocodeflashingonthediagnosticLED,thermostatdigital
displaywillbelit,butthecompressorwillnotstartuntilthevoltagehasrisenabove11.8volts.
TwoFlashes‐IndicatesanoverloadontheFanoutput.Thefanoutputcannotsupportanaverageloadgreater
than0.5amp,orapeakloadgreaterthan1ampfortwoseconds.
ThreeFlashes–Indicatesthatthecompressorcannotstartduetotoohighadifferentialpressureinthe
compressor.Thisisacommonproblemwherepoorvoltage,orbreaksinthepowersupplyorthermostatwiring
causethecontrollertoattemptacompressorre‐starttoosoonafterithasbeenstoppedforsomereason.
FourFlashes–Indicatesthatthecompressorcannotreachminimumspeedof1,850RPM.
FiveFlashes–Indicatesthattheelectronicsheatsinkhasexceeded212degF(100degC).Thiscanbeduetoan
overchargeofrefrigerant,waterinthesystem,orexcessiveambienttemperaturescombinedwithacompressor
operatingunderextremeload.Are‐startwillbeattemptedwhenheatsinkhascooledto170degF(80degC).
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POBox4535AnnapolisMD21403USA–www.frigoboat.com–[email protected]–301‐352‐5738
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