Robertshaw Smart Sense Series User manual

www.robertshaw.com
©2015 Robertshaw 2/15 – 352-00193-001
SMART 2000
Digital Programmable Thermostat
Installation Manual

IMPORTANT SAFETY INFORMATION
WARNING: ELECTRICAL SHOCK HAZARD – Turn off power at the main
power source by unscrewing fuse or switching circuit breaker
to the OFF position before installing, removing, or cleaning
this thermostat.
WARNING: FIRE AND ELECTRIC SHOCK HAZARD – This device should be
installed by a qualified service technician with due regard
for safety as improper installation could result in a fire and
electric shock hazard.
WARNING: FIRE AND ELECTRICAL SHOCK HAZARD – This is a 24V AC
low-voltage thermostat. Do not install on voltages higher than
30V AC.
• Do not switch system to cool if the temperature is below 50°F (10°C). This can
damage your cooling system and may cause personal injury.
• Do not short (jumper) across terminals on the gas valve or at the system control
to test installation. This will damage the thermostat and void the warranty.
• Do not connect ground to any terminal in this unit.
• All wiring must conform to local and national building and electrical codes and
ordinances.
• Use this thermostat only as described in the manual.

3
TABLE OF CONTENTS
Installation 6
MounngtheSMART2000Thermostat 7
PlanYourInstallaon 9
Wiring Diagrams 15
Before Applying Power 20
Commissioning 20
Control Logic 22
AdvancedInstallerSettings 23
Entering the Advanced Installer Menu 23
Using the Advanced Installer Menu 24
Funcons 24
UsingRemoteTemperatureSensors 39
OutsideAirSensorWiring 41
RemoteAirTemperatureSensorWiring 42
AveragingTemperatureSensors 42
RemoteON/OFFFuncons 43

4
Using the Occupancy Mode 43
SupplyAirTemperatureMonitoring 44
Advanced Functions 44
ModBusCommunicaons 44
FactoryTestMode 47
HighandLowBalancePoints 47
SengUptheHeatandCoolOFFFuncons 48
AdapveRecovery 48
PowerUpTheSystem 49
Specifications 52
Troubleshooting 54
One Year Limited Warranty 59

5
Thisdocumentisnottypicallylewiththeuserasitcontainsinformaonon
sengvalues.Ifthesearenotcorrectlyset,theymaydamagetheheang,
coolingoraircondioningsystemorseriouslyaectitsperformanceandenergy
consumpon.
Pleasereadthisinstruconmanualtounderstandtheinstallaon,tesngand
commissioning process.
This manual is to be used with the supplied User Manual.
Greatcarehasbeentakeninthepreparaonofthismanual.Uni-Line®takes
no responsibility for errors or omissions contained in this document. It is the
responsibilityoftheusertoensurethisthermostat,ortheequipmentconnected
toitisoperangtotheirrespecvespecicaonsandinasafemanner.
Uni-Linereservestherighttochangespecicaonswithoutpriornoce.

6
INSTALLATION
Aswithanyheangand/oraircondioningproject,carefulinstallaonisthe
keytoasuccessfuloutcome.Timetakenduringthisinstallaonprocesswillbe
rewardedwithasasedcustomerandfewercall-backs.
ThestepsrequiredtoinstalltheSMART2000thermostatare:
1. Read and understand this manual and the User Manual.
2. Mount the back plate in a suitable location.
3. SettheeightDIPswitchestomatchtheneedoftheproject/user.
4. Connect wires to terminal blocks.
5. Wiretheoptionalremotetemperaturesensor(s)orswitchesifrequired.
6. Power up the heating and/or air conditioning system.
7. Settheinstallersoftwareoptions(ifrequired).
8. Program and set up the thermostat. (The User Manual will assist with this).
9. Testtheheating,coolingandotherfunctions–Commissioning.

7
Mounting the SMART 2000 Thermostat
IMPORTANT: TheSMART2000canonlybeasaccurateastheonboard
temperaturesensor,oritsoponalremotetemperaturesensor(s)
permit. The thermostat should be mounted in a location that is
typical of the ambient room temperature. Do not install it near the
floor,inadraft,behindadoor,oronanon-insulated,exteriorwall.
Installthethermostatawayfromexposuretosunlightandfourto
five feet (12.2 to 1.5 m) above the floor.
Figure 1
• Liftthecover(Figure1)onthehousingtoexposeaslotatthebottom.Takenotice
of the decorative cover hinge points and the connection between the two halves.
• Insert a screwdriver or coin into the slot and twist. This will separate the two
halves.

8
• Continue to swing the top half upward. This will release the decorative cover
hinge and the tabs holding the top half in place.
• Pull the control wires through the large opening in the base plate.
• Position the base plate on the wall and attach it with appropriate fasteners
(Figure 2) (two screws with drywall anchors are supplied). The base plate should
be visibly level.
• Block any holes where wires are pulled through a wall opening. This will
prevent drafts from entering the back of the thermostat.
Figure 2
IfthisinstallaonwillbeusingModBuscontrolsorremotesensors,becertainto
includetheproperwirestomakethoseconnecons.

9
Plan Your Installation
ON
1 2
ON
1 2
DIP
5 63 4 7 8
+
Clock Battery
Switches 1 - 8
Switches for ModBus
End-Of-Line Resistor
Figure 3
Inaddiontothestandardthermostatwiring,theSMART2000has:
• Two groups of switches (DIP switches)
• ModBus communication terminals (leave OFF if communication errors occur)
• Two terminals for using remote sensors and contacts
• Battery for program clock back-up (lithium battery CR1220)

10
Theswitchesmustbesetcorrectlyforeachsystemconguraon.Followthese
steps:
1. Review the settings in Table 1.
2. Read the switch descriptions.
3. Mark or write down the switch positions that you will use.
4. Inthefiguresthatfollow,findthewiringdiagramthataccuratelydescribes
yourequipment.
5. Reviewtheswitchsettingsnexttothewiringdiagram.Ifthereareany
differencesbetweenthatlistandyourselections,reviewyourlist.Becertain
you have the correct wiring diagram and choices for switch positions.
The ModBus and TT terminals will be described later in this manual.

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Table 1 
Switch Off On
Sw1–FanSpeeds 1SpeedFan
(2 Heat / 2 Cool)
3SpeedFan
(1 Heat / 1 Cool)
Sw2–EquipmentType Heat / Cool Heat Pump
(O/B terminals)
Sw3–Stages 1Stage 2Stages
Sw4–ReversingValve
IfSw2=ON–HeatPump Energize in cool (O) Energize in heat (B)
Sw4–FanMode
IfSw2=OFF–Heat/cool Fan Control by
Heater (HG)
Fan Control by
Thermostat (HE)
Sw5–Anti-CycleTimer Off 4 Minutes
Sw6–Operation Manual Thermostat Programmable
Thermostat
Sw7–MinimumRun 2 Minutes 6 Minutes
Sw8–ProgramType
IfSw6=ON–Programmable Commercial Program Residential Program
Sw8–Setpoints
IfSw6=OFF–Manual SingleSetpoint TwoSetpoints

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Switch 1 – Relay Assignment
Switch1setsthefunconofthefanrelaysaseither:3fanspeedswith1heatand
1cooloperaonorsinglefanspeedwith2heatand2cooloperaons.
Switch 2 – Equipment Type
Both heat with add-on cooling or heat pump types of systems can be controlled.
Heat / Cool SystemsusetheWterminal(s)onlyforheangandtheYterminal(s)
only for cooling.
Heat Pump SystemsusetheYterminal(s)forBOTHheangandcooling.The
W1terminalisusedtocontrolthereversingvalvewhichdeterminesheangor
cooling mode.
Switch 3 – Equipment Stages
WhenitisnecessarytocontrolasinglestageA/Csystemedwithauxiliary
heangelements,turnSw3OFF,therebyselecngsinglestagemode.Heang
elements controlled by the W2 output are now assigned stage 2 heat.
Switch 4 – Reversing Valve or Fan Mode
WhenSw2isONitissetforHeatPumpmode.Thisswitchwillsetthereversing
valvelogic(O/B).WhenSw2isOFFitissetforHeatCoolMode.Thisswitchwill
then set the mode for the Heater fan logic (HG or HE mode).

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Switch 5 – Anti-Cycle Timer
To protect some A/C systems it is preferred that under no circumstances should
thecompressorstartwithinfourminutesofitswitchingo.
NOTE: When power is first applied to the thermostat it assumes that the
compressor has just stopped and applies this anti-cycle delay time before
starting.
Switch 6 – Thermostat Operation
Tosuitthevaryingrequirementsoftheuser,thethermostatcanbeset(Sw6ON)
asaprogrammablethermostat.Ameclockisusedtoautomacallycontrolthe
buildingtemperaturetoaprogrammedtemperatureprole.WhenSw6isOFF,the
thermostatisinmanualmodewhichrequirestheusertoturnthethermostatON
orOFF,andadjustthetemperaturesetpointmanually.
Switch 7 – Minimum Run Time
ToconserveenergyandprotecttheA/Csystem,limitthenumberofmesthe
heangandorcoolingsystemcanruninonehour.Thisswitchsetstheheang
andcoolingequipmenttoaminimumrunmeoftwoorsixminutes.Oncethe
heangorcoolinghasstarted,itmustrunforthisminimumsetme.

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Switch 8 – Thermostat Control Logic
ThisswitchhastwofunconsbasedontheposionofSw6.Whenthethermostat
issetasaprogrammablethermostat(Sw6ON),Sw8determineswhethera
commercialprogramorresidenalprogramwillbefollowed.WhenSw6isOFF,
the thermostat is used as a non-programmable thermostat. This switch will then
setasinglesetpointmode(Sw8OFF)or(Sw8ON)forseparateheangandcooling
setpoints. The two setpoint mode also permits the user to select a separate day
andnightsetpointifrequired.

15
Wiring Diagrams
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = Off (HC System)
Sw3 = Off (Single Stage)
Sw4 = Off (HG)
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
Set Advanced Installer
menu Fn=H to show heat
menus only
Heat only system (with fan control)
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
Heat Fan R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
Optional
Figure 4 HeatOnlySystemWithFanControl
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = Off (HC System)
Sw3 = Off (Single Stage)
Sw4 = N/A
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
Set Advanced Installer
menu Fn=C to show cool
menus only
Cool only system with 1 speed fan
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
Cool Fan R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
Figure 5 CoolOnlySystemwithOneSpeedFan

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Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = Off (HC System)
Sw3 = Off (Single Stage)
Sw4 = Off (HG)
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
1 heat with add on cool
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
Heat Fan R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
Cool
Figure 6 One Heat With Add On Cool
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = Off (HC System)
Sw3 = On (Two Stage)
Sw4 = Off (HG)
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
2 stage gas heat 1 stage add on cool
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
Heat 1 Fan R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
CoolHeat 2
Figure7TwoStageGasHeatOneStageAddOnCool
Wiring Diagrams

17
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = On (HP System)
Sw3 = Off (Single Stage)
Sw4 = User requirements
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
1 stage heat pump 1 stage fan
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
R/Valve Fan Low R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
Comp
Figure8OneStageHeatPumpOneSpeedFan
Switch Settings
Sw1 = On (3 speed fan)
Sw2 = On (HP System)
Sw3 = Off (Single Stage)
Sw4 = User requirements
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
1 stage heat pump 3 speed fan
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
R/Valve Fan Low R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
CompFan Med
Fan Hi
Figure 9 OneStageHeatPumpThreeSpeedFan
Wiring Diagrams

18
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = On (HP System)
Sw3 = Off (Single Stage)
Sw4 = Equipment Specific
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
1 stage heat pump with auxiliary heat
1 speed indoor fan
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
R/Valve Fan R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
CompAux Heat
Figure 10 OneStageHeatPumpWithAuxiliaryHeatOneSpeedIndoorFan
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = On (HP System)
Sw3 = On (Two Stage)
Sw4 = On Heat (B)/Off Cool (O)
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
Set Advanced Installer Menu
H3 = EH for W2 relay to control
Emergency Heat System
2 stage heat pump with emergency heat
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
R/Valve FanComp 1Comp 2
E Heat
Figure 11 TwoStageHeatPumpWithEmergencyHeat
Wiring Diagrams

19
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = Off (HC System)
Sw3 = Off (Single Stage)
Sw4 = Off (HG)
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
Set Advanced Installer
menu FN=H to show heat
menus only
Gas heat
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
Heat R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
Figure 12 Gas Heat
Switch Settings
Sw1 = Off (1 speed fan)
Sw2 = Off (HC System)
Sw3 = On (Two Stage)
Sw4 = Off (HG)
Sw5 = Installer preference
Sw6 = User requirements
Sw7 = Installer preference
Sw8 = User requirements
2 stage gas heat 2 stage add on cool
W2 Y2
G3 G2 W1 Y1 G1 Rly
Com 24V 24C B A T T
R C ModBus
Port
See TT Terminals
Options List
Factory
Link
Equipment
Heat 1 FanCool 1Cool 2
Heat 2
Figure 13 TwoStageGasHeatTwoStageAddOnCool
Wiring Diagrams

20
IfthisinstallaonwillbeusingModBusCommunicaons,readthesecon
ModBusCommunicaonsonpage44ofthismanual.
IfthisinstallaonwillbeusingRemoteSensors,readtheseconUsingRemote
TemperatureSensorsonpage39ofthismanual.
Before Applying Power
ReadtheseconsCommissioningandAdvancedInstallerSengs.Revieweach
sengandunderstandhowitwillaectyourinstallaon.Planaheadforany
changes you will make.
COMMISSIONING
Aswithanythermostat,commissioningensuresthatthethermostatandthe
equipmentconnectedtoitareoperangcorrectlyandasexpected.Althoughthe
SMART2000isamul-funconalthermostat,commissioningisastep-by-step
process.FollowthestepsdetailedbelowandusetheTroubleshoongGuideon
page 54 if you encounter a problem.
Whenthethermostatisedtothebaseplateandwhen24VACpowerisrst
applied,theLCDshouldbrieyshowallavailablesegments(anLCDfuncon
test),thendisplaythesowareversionnumberbeforedisplayingthemeand
operangmode.