Comfort Stat CP1717 User manual

DigitalThermostat
OwnersManual
Mode:CP1717
Yournewthermostatwillprovideyearsofreliableservice.Usingthis digitalthermostatwillprovidemoreuniformcomfortinyourhomethrough
theseasons.Thankyouforbuyingtheproduct!
Pleasereadthismanualforcompleteinstructionsoninstallingandoperatingyourthermostat.Ifyourequirefurtherassistance,pleasefeelfreetocontactus.
IMPORTANTINFORMATION
1.Thisthermostatisdesignedtoworkonthefollowingsystems:
ŸGas–StandingPilot ŸOil–FiredFurnace
ŸGas–ElectronicIgnition ŸSingleStageHeatPumps–withno
ŸGas–FiredBoilers auxiliaryheat
ŸGas–MilivoltSystems ŸElectricFurnace
ŸOil–FiredBoilers ŸElectricAirConditioning
ThisthermostatwillNOTcontrolmultistageheatpumpsor110/220Vbaseboardelectricheatingsystems.
2.TemperatureRange
Thisthermostatcanbesetbetween45˚Fand95˚F(7˚Cand35˚C).However,itwilldisplayroomtemperaturesfrom30˚Fto99˚F(0˚Cand37˚C).“HI”willbedisplayed
ifthetemperatureishigherthan99˚F(37˚C),and“LO”willbedisplayedifthetemperatureislowerthan30˚F(0˚C).
ThisthermostatwillautomaticallycutoffinHeatmodeifthetemperaturerisesabove95˚F(35˚C),andautomaticallycutoffinCoolmodeifthetemperaturedropsbelow
45˚F(7˚C).
3.CompressorProtection
Thisthermostatprovidesa4minutedelayaftershuttingoffthecompressorbeforeitcanberestarted.Thisfeaturewillpreventdamagetoyourcompressorcausedby
rapidcycling.Itdoesnotpreventarapidcompressorrestartduetoshortpoweroutages.
4.BatteryWarning
TwofreshAAalkalinebatteriesshouldprovidewelloveroneyearofservice.However,whenthebatteriesbecomedrainedtheLowBatteryIndicatorwillflashonthe
display.Whenthismessageoccurs,installnewalkalinebatteries.Youhaveapproximately1minutetochangethebatteriesandkeepthethermostat’ssettings.Once
thebatterieshavebecometoolowtoensureproperoperation,yoursystemwillbeturnedoff,andthedisplaywillbeclearedexceptforflashingLowBatteryIndicator
ontheLCDdisplay.
CAUTION:When only the battery icon flashes on the display, the thermostat is shut down, and your system will no longer operate. In this condition, there is no
temperaturecontrolofyourdwelling.
NOTE:Thebacklightwillnotfunctionwhenthethermostatisinlowbatterycondition.
NOTE:Ifyouplantobeawayfromthepremisesover30days,werecommendthatyoureplacetheoldbatterieswithnewalkalinebatteriespriortoleaving.
FEATURES
Structureofthermostatandexplanationforthekeypads

heat
off
cool
system
on auto
fan
OPERATION
Startup
The LCD will show the factory default displayof70˚F(21˚C)whenbatteriesarefirstinstalled,.Thetemperaturewillupdate
afterafewseconds.
SystemSelectorSwitch
TheSystemSelectorswitchonthefrontofthethermostatdeterminestheoperatingmodeofthethermostat.YoumayselectCOOL,OFF,HEAT.
NOTE:Anytimeyouinstallorremovethethermostatfromthewallplate,slidetheSystemSelectortotheOFFpositiontopreventthepossibilityofa
rapidsystemOn–OFF.
FanSwitch
TheFanswitchshouldnormallybelocatedintheAUTOposition.TheFanwillbeturnedonalongwithnormaloperationofyoursystem.Inanormal
gasoroilfurnace,theFanwillbeturnedonbyyourfurnaceafteritswarmupdelay.Forelectricheat,airconditioning,andheatpumpoperation,the
Fanwillturnonwiththesystem.
ToruntheFanoncontinuously,slidetheFanswitchtotheONposition.
ReviewCurrentSetTemperature
ŸPresseithertheupordownkeyoncetoseetheSetTemperature.
Thefactorydefaultis68˚F(20˚C)whenstartedwiththeSystemSwitchOfforHeat,and78˚F(26˚C)whenstartedwiththeSystemSwitchonCool.
SettingNewTemperature
Ÿ Press either the up or down once and displaythesettemperature.
ŸPresseitherupordownagaintochange toyourdesiredSetTemperature.Holdthekeydownforover2secondstofast advance
theSetTemperature.
Thedisplaywillreturntothenormalroom temperatureafterthekeyshavebeenreleasedfor5seconds.
FilterMonitor
Thethermostatcountsthenumberofhours yoursystem’sfilterhasbeeninuse.Tomaximizeyoursystem’sperformanceand
energy efficiency, change or clean your filterregularly.W henthetotalsystemruntimeforheatandcoolreaches400hours,the
Filter Change Indicator will flash as a remindertocheckyoursystem’sfilter.
Afterchangingorcleaningthesystemfilter, pressandholdtheFilterkeyfor3seconds.The displaywillblink,andthecounterwill
beresettozero.
Note:PressingtheFilterkeyatanytimeforlessthan3secondswillcausetheFilterChangeIndicatortoappearontheLCD.Thisisonlytoconfirmkeyoperation,and
thecounterisnotaffectedunlessthekeyisheldforgreaterthan3seconds.
SPANSetting
Yourthermostatissetatthefactorytocycleat2˚F(1˚C)aboveandbelowthe settemperature.(Span=2)Thissettinghasbeendesignedtoprovide acomfortable
roomtemperatureundermostallconditions.However,ifyoufindyoursystemcyclingtoofastortooslow,thentheSpancanbeadjustedtomodifythecycletime.
ŸPressandholdBOTHupanddownkeysforthreeseconds.SPANwillbedisplayedontheLCD.
ŸPressuptoraisetheSpanto3.ThissettingINCREASEStocycletimebyallowingyoursystemtorunLONGER.
ŸPressdowntolowertheSpanto1.ThissettingDECREASESthecycletimebycausingyoursystemtorunSHORTER.
TheSpansettingsremainthesameforbothHEATandCOOL,andcanbechangedinanySystemSwitchposition.
COO L OF F HE AT ON A U TO
SY ST E M FAN
FilterChange
Indicator:Flashes
whenfilterneeds
tobechecked.
LCDDisplay:
ShowsRoom
Temperature,Set
Temperature,and
otherfeature
informationas
required.
Light:Backlight
display
automatically
witheachkey
pressforeasy
viewing.
LowBattery
Indicator:
Flasheswhen
batteriesneed
tobereplaced.
FrontDoor:
Batterycover
Openwithone
fingerfromtop.
System
Switch:
Selector
switchfor
Heat,Cool,
andOff.
FanSwitch:
Fanswitch
forAutomatic
orContinuous
fanoperation.
FilterKey:
Resetsthe
filterchange
countertozero.
UpandDownKeys:
Keysforchanging
theTemperature
setting.Alsoused
foradjustingthe
Span.
Battery
Compartment:
Frontaccessallows
easyinsertionof
twoAA1.5V
batteries.
FrontDoor:
CoverkeysOpenwith
onefingerfromleftorright.

Whenbatteriesareinstalledinthethermostat,theSpanisresetbacktosetting2.
Backlighting
Yourthermostathasanelectroluminescentlampthatbacklightsthedisplayforeasyviewinginthedark.
Whenanykeyispressed,thedisplayisilluminated.
Thedisplaywillremainilluminatedfor7secondsafterthelastkeyispressed.Thisallowsthelighttostayonifyouneedtooperateseveralkeys.
Note:IfthethermostatisinLowBatterywarningcondition,thebacklightwillnotoperate.Replacewith2newAAalkalinebatteriestorestorethe
Backlightfunction.
LowBatteryWarning
Your thermostat has a twostage lower battery warning system. When the batteries are first detected to be weak, the first stage low
battery warning is indicated by battery symbol flashing on the LCD display. At your earliest convenience, you need to replace the
batterieswith2newAAalkalinebatteries.When thebatteriesbecometooweekfornormal operation,thethermostatentersthesecond
stagelowbatterywarningwhichshutsdownthe thermostat. In this condition, battery symbol flashes alone on the display, and the
thermostatwillturnyoursystemoff.Yoursystem willremainshutoffuntilthebatteriesarereplaced.
Note:ThethermostatwillstillkeepthecurrentSetTemperatureandFilterruntimeinmemoryuntilnewbatteriesareinstalled.Afterconfirmingthatnewbatterieshave
beeninserted,thethermostatwillreturntonormaloperating.
ErrorMode
Ifthethermostatisunabletocontrolyoursystemduetoanunexpectedbatteryproblem,thethermostatwillenterErrorMode.Inthiscondition,thethermostatflashes
“E1”or“E2”ontheLCDdisplay,andshutsoff yoursystem.
To correct this problem, replace thebatteries with2 newAA alkaline batteries, evenif you have recently replaced them. Next, Move
the battery out hold any key then place the batteryagain.Youwillneedtoreprogramyourthermostatandconfirmnormaloperation.
If Error Mode returns, please call us for furtherinformation.
AutoCutOff
Your thermostat will automatically cutoff in Heatmodeiftheroomtemperaturerisesabove95˚F(35˚C).ItwillcutoffinCoolmodeif
the room temperature drops below 45˚F (7˚C).
Note that if your system has malfunctioned andnolongerrespondstothermostatcontrols,theAutoCutOffwillhavenoeffect.
MechanicalHeatBackup
ThisthermostatincludesabimetalswitchthatwillautomaticallyturnontheHeatwhenthetemperaturereachesabout41˚F(5˚C).WARNING:Thisswitchonlyactivates
theHeatingterminal(W).ThesystemitselfmustbecapableofautomaticallyturningtheFanOn.WithoutnormalFanoperation,severedamagetotheheatingsystem
couldresult.
INSTALLATION
WhatYouNeed
Thisthermostatincludestwo#8slottedscrewsandtwowallanchorsformounting.Toinstallyourthermostat,youshouldhavethefollowingtoolsandmaterials.
ŸSlottedScrewdriver(s)
ŸSmallPhilipsscrewdriver
ŸHammer
ŸElectricdrilland3/16”bit
ŸTwo1.5V(AA)sizealkalinebatteries(included)
RemoveOldThermostat
CAUTION:Donotremoveanywiringfromexistingthermostatbeforereadingtheinstructionscarefully.Wiresmustbelabeledpriortoremoval.
INPORTANT!Turnoffthepowertothefurnaceatthemainpowerpaneloratthefurnace.
Remove existingthermostatcover andthermostat.Somethermostatswill have screws or other lockingdevices that mustfirstbe removed. Once thewall mounting
plateisexposed,lookforwires.Ifwiresarenotvisible,theymaybeconnectedtothebackofthewallplate.Again,lookforscrews,tabs,etc.Somemodelshavedoors
thatopentoexposewiresandmountingscrews.SeeFigure1.
TypicalHomeThermostats
WallmountingPlateThermostatCover

Figure1
WiringLabeling
ŸEachwirecomingfromthewalltotheexistingthermostatisconnectedtoaterminalpointonthatthermostat.Eachoftheseterminalpointsisusuallymarkedwitha
codelatterasshowninTableAbelow.
ŸNotethatthisthermostathasmultiple functionterminalsthat allowSingleStageHeatPumpcapability.Standardsystemsuse:Rh,Rc,G,Y,W.[SingleStageHeat
Pumpsuse:R,Y,G,andOorB.]TableAbelowshows
themultiplefunctionsoftheterminals.Usetheterminalsthatmatchyoursystem.
ŸThenumberofwiresinyoursystemcanbeasfewastwo(forheatonlysystems),asmanyaseight,oranynumberinbetween.Ifyoufollowthelabelingprocedures
correctly,youdonothavetobeconcernedabouthowmanywiresthereare.
ŸThereisoftennoterminalmarking onthe existingthermostatoftwowire,heat only systems.Justconnecteitherofthewirestothe RHterminal,thenconnectthe
otherwiretotheWterminaltocompletethecircuit.
ŸIMPORTANT!BEFOREDISCONNECTINGANYWIRES,APPLYTHESELFADHESIVELABELSPROVIDEDTOTHEWIREASSHOWNINTABLEABELOW.(For
example,attachthelabelmarkedWtothewirethattoestotheWorHterminalonyourexistingthermostat.)IGNORETHECOLOROFTHEWIRESsincethesedo
notalwayscomplywiththestandard.
ŸAfterlabelingwires,disconnectthemfromtheexistingthermostat.
ŸRemoveexistingwallplate.Tomakesurewiresdonotfallbackintowallopening,youmaywanttotapethemtothewall.
ŸIfholeinwallislargerthannecessary forwires,sealthisholewithinsulatingmaterialsothatnohotorcoldaircanenterthebackofthethermostatfromthewall.
Thisaircouldcauseafalsethermostatreading.
TableA
Ifthecodeletteron
yourexisting
Thermostatis
thenmarkthewire
withlabelshown
andconnectto
thermostatterminal
shown
NOTE:Donotconnecta“Common”wire(sometimes
labeled“C”)toanyterminalonthisthermostat.Tapeupthewireanddonotuse.Thiswireprovideselectricitytononbattery
poweredthermostats.
MountwallplateandThermostat
ŸRemovethewallplatefromyourthermostatbypressingthereleasetabonthebottomofthethermostat.SeeFigure2.
RH,R,VRor4
24Volt
or
B
ReversingValveoperatinginHeatmode.
(SingleStageHeatPumpsONLY.)
ReversingValveoperatinginCoolmode.
(SingleStageHeatPumpsONLY.)
or
O
24VoltCool
RC,VC
GorF
Fan
Y,Y1,CorM
AirConditioningCompressor
or
SingleStageHeatPump
Compressor
WorH
Heating
R
24Volt
(SingleStageHeatPumpsONLY.)
Rh/B
W
R
Y
G
Rc/O
Rh/B
Rc/O
G
Y
W
R

Figure2
ŸPositionwallplateonwallandpullexistingwiresthroughlargeopening.Thenlevelforappearance.Markholesforplasticanchorsprovided,ifyourexistingholesdo
notlineupwiththoseonthewallplate.
ŸDrillholeswith3/16”bitandgentlytapanchorsintotheholesuntilflushwithwall.
ŸRepositionwallplatetowall,pullingwiresthroughlargeopening.Insertmountingscrewsprovidedintowallanchorandtighten.SeeFigure3.
Figure3
NOTE:5WireSystems
IfyourthermostathasonewiremarkedRorRh(2,3,or4wiresystem),thenleavethejumperwirebetweentheRhandRcterminalsonthewallplate.Otherwise,if
youhaveseparateRhandRcwires(5wiresystem),thenremovethejumperwirebetweentheRhandRcterminals.
ConnectWiresandMountThermostattowallplate
ŸMatchandconnectthelabeledwirestotheappropriatecodedterminalscrewsonthewallplate.(SeeFigure4,5.)Ignoreanywireswhichmaybepresent,butwhich
werenoteconnectedtotheoldthermostat.
Figure4Figure5
ŸRefertotheWiringDiagramsbelowtobesureyoursystemiswiredcorrectly.
ŸIfyoursystemisasinglestageheatpumpandusesanOorBwire,youmustmovetheSystemSelectorswitchinsidethethermostattotheHeatPumpposition.If
youhaveanormalfurnaceorelectricsystem,leavetheswitchintheStandardposition.RefertotheSystemSelectorsectiononthebackformoreinformationonthis
switch.
ŸBesuretotightentheterminalscrewssecurely,otherwisealoosewirecouldcauseoperationalproblemswithyoursystemorthermostat.
ŸPushexcesswirebackintotheholetopreventinterferencewheninstallingthethermostattothewallplate.
ŸMakesuretheSystemSwitchissettoOFF,andtheFanSwitchissettoAUTO.
R
Rh/O
G
Y
W
Rc/B

ŸInsertthetabs ontopofthethermostatbodyintotheslots atthetopofthewallplate.Pressthebottomofthethermostatbodyintothesnaponthe bottom ofthe
wallplate.RefertoFigure2.(NOTE:Donotforcethethermostatontothewallplate,astheterminalpinsmaybedamaged.Ifitdoesnotsnapproperly,thethermostat
maynotwork.)
ŸInsertthetwoAAsizealkalinebatteries,observingthepolaritymarkedinsidethebatterycompartment.
ŸSwitchonthemainpoweratthepanelorfurnace.
WiringDiagrams
XNoConnection
SelectorSwitches
Inorderforthisthermostattocontrolyoursystem,thesystemtypemustbespecifiedbytheselectorswitchesontheprintedcircuitboardinsidethethermostat.There
isalsoaselectorswitchforyourchoiceofFahrenheitorCelsiustemperaturedisplay.Seefigure6.
ŸHeatingSystemSelector(HG–HEswitch)
Thefactorypositionforthisswitchisinthe“HG”position.Leaveitinthispositionifyouhaveagasfurnaceoranoilburner.Ifyouhaveanelectricfurnace,testtosee
whethertheHeat andFancomeon as expectedafterinstallation.IftheFanoperationisnormal,leaveitinthe“HG”position.IftheFandoesnotcome onwithin a
minuteofthethermostatcallingforheating,changetheswitchpositionto“HE”.Thesystemselectorhasnoeffectinthecoolingmode.
NOTE:“HG”positionisforgasandmostothersystems.“HE”positionisforcertainelectricsystemshavingafanrelay.
ŸSystemSelector(STANDARD–HEATPUMPswitch)
R G W Y Rh/B Rc/O
Wallplate
Terminals
Jumper
Fan
Relay
HeatRelay
orValve
Cool
Contactor
Heat/Cool
24VSupply
System
Selector
STD
HP
Fan
Relay
Reversing
Valve
Compressor
Contactor
Wallplate
Terminals
R G W Y Rh/B Rc/O
System
Selector HP
STD
Fan
Relay
R
Wallplate
Terminals
Heat24V
Supply
Cool
Contactor
HeatRelay
orValve
Coo l24V
Supply
NoJumper
W
G Rh/B
Y Rc/O
System
Selector HP
STD
Jumper
24V
Supply
Heat
Mode
Cool
Mode
OR
Heat24Vor
MillivoltSupply
HeatRelay
orValve
Wallplate
Terminals
R
Jumper
G W Y Rh/B Rc/O
System
Selector HP
STD
Wallplate
Terminals
R
System
Selector
Heat24V
Supply
HeatRelay
orValve
G W Y Rh/B Rc/O
Jumper
HP
STD
Fan
Relay
Fan
Relay
Wallplate
Terminals
R
Cool
Contactor
Cool24V
Supply
G W Y Rh/B Rc/O
System
Selector HP
STDJumper
4WireHeat/CoolSystem
5Wire/HeatCoolSystem
SingleStageHeatPumpSystem
2WireHeatOnlySystem
3WireHeatOnlySystem
3WireCoolOnlySystem
Connect to proper Reversing
ValveTerminals.SeeTableA

ThefactorypositionforthisswitchisintheSTDposition.LeaveitinthispositionifyouhaveANYsystemthatusesgas,oil,electric,orhotwaterheating.Ifyouhavea
singlestageHeatPump(noauxiliaryoremergencyheatsource),thenslidetheswitchtotheHPposition.Besurethereversingvalvewireisconnectedtothecorrect
terminalforyourheatpump(Rc/O)or(Rh/B).
ŸF˚/C˚selector(Fahrenheit/Celsius)
YourthermostatissetforF˚modefromthefactory.InordertochangetoC˚mode,slidetheswitchtoC˚andholdanykeyabout2secondswithoutthebattery,then
placethebatteryagain.
NOTE:Unlesspressanykeyabout2secondswithoutthebattery,thenplacethebatteryagain.
Figure6
TROUBLESHOOTING
Problem Solution
1.Checkbatteryconnectionsandbatteries.NoDisplay
2. Move the battery out and wait for about 1
minutesthenReplaceBatteries..
Entire Display
Dims.
1.ReplaceBatteries.
AutoFanDoesNot
TurnOnProperly.
1.MoveHG/HEselectortocorrectposition.
1.Checkthatthefunctionswitchisinthecorrect
position(“HEAT”or“COOL”).
2. There may be as much as 4mintue delay
beforethe system turns On –wait and check.
(Compressorprotectiondelay.)
3. Check your circuit breakers and switches to
ensurethereispowertothesystem.
4.Replacebatteries.
5.Makesureyourfurnaceblowerdoorisclosed
properly.
6. If your nonheat pump system only uses 4
wires, be sure the jumper wire is installed
betweentheRh/BandRc/Oterminals.
7. Check the position  of the Reversing Valve
selectorswitch:StandardorHeatPump.
Heating or Cooling
DoesNotGoOnor
Off.
8. If you have singlestage heat pump, be sure
thejumperwireisinstalledbetweentheYand
Wterminals.
ErraticDisplay 1.Movethebatteryoutholdanykeythenplace
thebatteryagain.Thenreprogram.
Ifunitcontinuesto
operateintheOff
position.
1.Replaceunit.
Thermostat
permanentlyreads
“HI”,“LO”,or“Er”.
1.Replaceunit.
1 2 3 4
Te mp era tur e
Di spla y
Sy st em
Se lecto r
ST D H P
F an Opt ion
HG
HE
K3
JP 2
FA HR EN HE IT C EN TIG RAD E
K5