MasterStat 110423-2 User manual

Brand: MasterStat

Model: 110423-2

Category: Thermostats

Type: User manual

Installation Instructions

CAUTION: Failure to read and follow all installation and operating instructions could lead to personal injury and/

or damage to property.

CAUTION: All electrical installations must comply with local building and safety codes and must be performed by

qualied personnel only.

System Overview

• Thiscontrolsystemisintendedtobeusedwithanevaporativecoolerwitha2-speedblowerandawaterpump.Itwillalsooperatea

waterpurgepumporvalve,ifequipped.

• Thecontrolisdesignedforfanmotorsupto1HP(120V)or2HP(240V),withwaterpumpandpurgepumpupto2A(120V)or1A

(240V)

• Thefanmotormaybe120Vor240Vrated.

• Thewaterpumpandpurgepumpmotors/valvessharethesameelectricalsupply,ratedfor120Vor240V.

Included in Kit

• WallControlThermostat

• 2-SpeedEvaporativeCoolerControl

• WireNutforcommonEarthconnection.

• Spare3.15Ampfuseforcontrol.

• JumperwireforLinktoN-Link(TobeusedonlywhenbothFanandPumpvoltagesarethesame).

Additional Requirements

Dependingonapplicationandinstallation,thefollowingadditionalitemsmayberequired:

• ScrewsorboltsformountingtheApplianceControlBoxandWallControl

• WiringforconnectionbetweenpowersupplyandApplianceControlBox;WallControlandApplianceControlBox;andbetween

ApplianceControlBoxandthecoolerconnectionbox.

• Conduitandwatertightconnectorstoprotectallwiring.

Installation of the Appliance Control Box

CAUTION: To prevent electrical shock and/or damage to the equipment, disconnect electrical power to the system at

the main fuse or circuit breaker before starting the installation, and leave disconnected until the installation is complete.

1) AfterdeterminingasuitableplacetoinstalltheApplianceControlBox,markthelocationofthethreemountingpoints(withthe

‘TOP’indicationuppermost)anddrillpilotholesforthemountingscrews.

2) Determinewhichknockoutlocationswillbeusedforthesystemwiring.

3) Usingasuitabletool,cutouttherequiredknockouts.Makesureyoucutoutthe

correctsizeholeforyourtting.

4) Mounttheboxusingsuitablescrews.

5) Installconduitandconnections,ensuringawatertightseal,especiallyaroundthe

locationswheretheknockoutswereremoved.

6) Runwiring,inaccordancewithlocalandnationalelectricalcodes,tosuitthe

installation.

7) Connectthewiresinaccordancewiththewiringdiagramonnextpage(wiring

diagramalsolocatedontheinsidelidofApplianceControlbox).

 WARNING: Use the jumper wire between Link and NLink only

when fan and pump voltages are the same.

Wall Control Thermostat and 2-Speed Evaporative Cooler

Control System • Model 110423-2

Installation of the Wall Control - cavity wall without outlet box

1) DetermineasuitableplacetoinstalltheWallControl(awayfromsourcesofheat,sunlight,orventilation,and

between4and6feetfromtheoor).Donotinstallnearcooleropening.

2) Usingthemountingplateasaguide,markthelocationofthetwomountingpointsandtheterminalopening

fortheconnectionterminal.

3) Makeaholeinthewalljustlargeenoughtoaccommodatetheconnectionterminalandassociatedwiring.

4) Routeaninsulatedthree-conductorthermostatcable(orsimilarlowvoltagecable)fromtheApplianceControl

Boxthroughthehole,leavingaboutsixinchesprotruding.

5) Routethewiringthroughtheopeninginthewallcontrolmountingplate.Usingwallanchors,screwthe

mountingplatetothewall.

6) Connectthewirestotheterminalsasperthewiringconnectiondiagrambelow.Thesesamewirecolorsmatch

thoseindicatedonthecontrolbox.

7) Plugtheconnectionterminalintothebackofthewallcontrol.Placethetabsonthemountingplateintotheholesinthetopofthe

thermostatandrotatetheWallControluntilitsnapsontothemountingplate.Youmayusetheprovidedscrewtosecureitinplace.

FLO

FHI

Fcom

Link

NLink

Pcom

Pecom

Fan/Pump 120V

Fan/Pump 240V

Fan 240V

Pump 120V

Fan 120V

Pump 240V

Fan Low

Fan

Power Supply

Pump Purge

Fan High

Fan Common

Pump Power

Pump Common

Purge Power

Purge Common

Not

Used

Not

Used

N NL2

L1 L1 L1

Ground Connections*

*Note: Use the provided wire nut to connect all ground connections for power

supply, fan, pump, purge pump and cooler cabinet.

Warning: Use jumper between Link and NLink only when Fan and Pump

voltages are the same.

Wiring Connections - Use Copper Conductors

Wiring Connections in Appliance Control Box

ConnectionTerminal

Red

Black

White

MountingPlate

Installation of the Wall Control - using an existing wall-mounted outlet box

CAUTION: Only use a single outlet box and do not share wiring with any other

equipment.

1) Routeaninsulatedthree-conductorthermostatcable(orsimilarlowvoltagecable)fromthe

ApplianceControlBoxtotheoutletbox,leavingaboutsixinchesprotruding.

2) Routethewiringthroughtheopeninginthewallcontrolmountingplate.Screwthemount-

ingplatetotheoutletbox.

3) Connectthewirestotheterminalsasperthewiringconnectiondiagrambelow.These

samewirecolorsmatchthoseindicatedonthe

controlbox.

4) Plugtheconnectionterminalintotheback

ofthewallcontrol.Placethetabsonthe

mountingplateintotheholesinthetopofthe

thermostatandrotatetheWallControluntilit

snapsontothemountingplate.Youmayuse

theprovidedscrewtosecureitinplace.

Operating Instructions

Automatic Operation

The fan and water pump are controlled automatically to achieve the desired comfort level.

Automaticoperationisactivatedbypressingthe‘Mode’buttonuntil‘Auto’isdisplayedontheLCD.The‘Mode’buttonchangesthe

controlbetweenOff,AutoandManual.

TheSettemperature(thetargettemperatureforthecontrol)maybealteredbyrepeatedlypressingorholdingthe‘Up’and‘Down’but-

tons.TheLCDwilldisplay‘Set’ratherthen‘Room’temperatureforashorttimeafterpressingthe‘Up’or‘Down’button.

Onstarting,ifthepadsinthecooleraretoodry,thefanmaybedelayedfromstartinguntilthepadshaveabsorbedsomewater.Thisis

calledPre-Wetandlastsfor2minutes,indicatedby‘Pre-Wet”ashingontheLCD.ThePre-Wetcanbebypassedbyenteringmanual

modebyeitherpressingthe‘Fan’,‘Pump’or‘Mode’buttonandthenpressingthe‘Mode’buttonuntil‘Auto’isdisplayed.

Duringautomaticoperation,thecontrolperformsawaterpurgecycleevery8or12hoursofpumpoperation.Thisintervalcanbe

toggledbetween8or12hoursbysimultaneouslyholdingthe‘Pump’and‘Fan’buttonsfor5seconds.Theselectedintervalisdisplayed

forashorttime.PresstheUporDownarrowbuttonstochangebetween8or12hours.Thisactionalsostartsamanualpurgecycle.A

purgepumporpurgevalve,whichisnotsuppliedwiththethermostatcontrolorevaporativecooler,isrequiredforthisoperation.

Manual Operation

The fan speed and pump are set by the user.

Toactivatethemanualmodefromthe‘Off’state,pressthe‘Mode’buttonuntil‘Manualisdisplayed.Ifthecontrolisinthe‘Auto’

mode,youcanchangetomanualmodebypressingeitherthe‘Mode’,‘Fan’or‘Pump’buttons.Eachpressofthe‘Fan’buttonchanges

thefantoHigh,LoworOff.EachPressofthe‘Pump’buttonchangesthepumpstatuseitherOnorOff.

TheLCDwilldisplay‘Manual’ontheleftandthefanandpumpsettingsontheright.Thefanspeedwillbedisplayedas‘FanHi’or

‘FanLo’.Ifneitheraredisplayedthefanisoff.Withthefanandpumpbothrunning‘Cool’willbedisplayed.Ifonlythefanisrunning

‘Vent’willbedisplayed.Ifonlythepumpisrunning‘Pre-Wet’willbedisplayed.

Time Delay Operation

Delayed start or stop in ‘Auto’ or ‘Manual’ mode

The‘Timer’buttonisusedtosetadelayperiodbetween1and12hoursin1hourincrements.

Ifthecoolerisoperating(in‘Auto’or‘Manual’modes)whenthe‘Timer’buttonispressed,thedelayperioddetermineswhenthecooler

switchesoff.

Ifthecoolerisoffwhenthe‘Timer’buttonispressed,thedelayperioddetermineswhenthecoolerstartsin‘Auto’mode.TheSet

Temperaturewillbethelastsettingwhenrunningin‘Auto’mode.

‘TimerDelay’andtheremainingtimearedisplayedontheLCDwhilethetimerfeatureisactivated.

YoucancanceltheTimerfunctionatanytimebypressingthe‘Timer’button.The‘TimerDelay’indicatorwillnolongerdisplayonthe

LCD.

In the event of a power outage

Ifpowerisinterruptedwhilethecoolerisrunningineither‘Auto’or‘Manual’modethecoolerwillremainoffwhenpowerisrestored.

Thecoolermustbestartedmanuallybypressingthe‘Mode’buttononthewallcontrol.Thethermostatwillrememberthelast‘Set’

temperatureentered.

Trouble Shooting Guide

TheguidebelowisintendedtoaidanInstallerorServiceTechnicianinresolvingsimpleproblems.

CAUTION: To prevent electrical shock and/or damage to the equipment, disconnect electrical power to the system at the main fuse or

circuit breaker before opening the appliance control box, and leave disconnected until after the lid has been shut and secured.

CAUTION: Any testing performed on live conductors must be carried out by qualied personnel only.

Observation Possible Cause Remedial Action

Coolerdoesnot

work/NoLCD

displayonthe

WallControl

Incorrectconnectionofwiring

betweenWallControlandAppliance

ControlBoard

CheckthecorrectconnectionofthethreewiresattheApplianceControlBoard

andWallControl.Ensurethecorrectwiringorderatbothends,andthatthe

terminalsarecorrectlyttedandsecured

PowerSupplyCircuitBreakerOffor

ApplianceControlBoxnotconnected

tothePowerSupply.

ChecktheconditionofPowerSupplyCircuitBreaker.Verifythatthecircuit

BreakerSwitchisOn.

SupplyVoltageshouldbepresentbetweenSupplyL1andSupplyNterminals

ontheApplianceControlBoard.

BlownFuseintheApplianceControl

Box.

ChecktheconditionofFuselocatedontheApplianceControlBoard.Check

forincorrectwiring.Replaceblownfusewiththecorrecttype.

ApplianceControlBoardorWall

Controlfaulty.

SwitchonthePowersupplytotheApplianceControlBox.

MeasuretheDCVoltageattheWallControlbetweentheBlackandRedtermi-

nalswiththeWallControlstillconnected.Ifthemeasuredvoltageisgreater

than3.0VDCandtheLCDremainsblank,theWallControlisatfault.

Ifthevoltageislessthan3.0VDC,disconnecttheredwireandmeasurethe

voltagebetweentheblackandredwire.Ifthemeasuredvoltagerisesto

3.0VDC,theWallControlisfaulty.Ifthemeasuredvoltageremainslow,the

ApplianceControlBoardisatfault.

Water/Purge

Pumpdoesnot

work.LCDon

WallControl

indicatesitis

on.(*)

PoorconnectionofWaterPumptermi-

nalsontheApplianceControlBoard.

VerifythatWaterPumpleadsarecorrectlyconnectedtotheWaterPumpcon-

nectionscrewterminalsontheApplianceControlBoard.

Incorrectconnectionofwiring

betweenWallControlandAppliance

ControlBoard.

VerifythatcolorsofthermostatcablematchthecolordescriptiononAppliance

ControlBoard.Checkthatallwiresarermandsecure.

FanMotor

doesnotwork

/NoFanHigh

and/orFanLow

operation(*)

Pre-Wetcycleisactive CheckLCDdisplayforashingPre-Wetindicatingthefanisturnedoffuntil

pre-wetcycleiscomplete.

PoorconnectiontoFanMotortermi-

nalsontheApplianceControlBoard.

VerifythatFanMotorleadsarecorrectlyconnectedtotheFanHi,FanLo,and

NconnectionscrewterminalsontheApplianceControlBoard.

Incorrectconnectionofwiring

betweenWallControlandAppliance

ControlBoard.

VerifythatcolorsofthermostatcablematchthecolordescriptiononAppliance

ControlBoard.Checkthatallwiresarermandsecure.

PoorconnectionbetweenLinkand

Nlink

Verifythatthejumperwireacross“Link”and“Nlink”isconnectedproperly.

Warning: Use the jumper wire only when fan and pump voltages are

the same.

*Appliance

ControlBoard

DiagnosticTest

TheControlBoardcontainsdiagnosticbuttonsintheupperleftrecessedsection.Followtheinstructionsofthelabello-

catedontheinsideboxcovertodiagnosethedifferentfunctionsoftheboard.Pressingthebuttonswilltesteachfunction

oftheboard.IfallLED’slightduringthetest,thecontrolboardisworkingproperly.Ifnotthecontrolboardisfaulty.

MasterStat 110423-2 User manual

Brand: MasterStat

Model: 110423-2

Category: Thermostats

Type: User manual

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MasterStat 110423-2 User manual

MasterStat 110423-2 User manual

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