Robertshaw Smart Sense Series Installation Manual
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Robertshaw Smart Sense Series Installation Manual

Robertshaw Smart Sense Series Installation Manual

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

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Summary of Contents for Robertshaw Smart Sense Series

  • Page 1 SMART 2000 Digital Programmable Thermostat Installation Manual www.robertshaw.com 2/15 – 352-00193-001 ©2015 Robertshaw...
  • Page 2 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.

  • Page 3: Table Of Contents

    TAbLE OF CONTENTS Installation Mounting the SMART 2000 Thermostat Plan Your Installation Wiring Diagrams Before Applying Power Commissioning Control Logic Advanced Installer Settings Entering the Advanced Installer Menu Using the Advanced Installer Menu Functions Using Remote Temperature Sensors Outside Air Sensor Wiring Remote Air Temperature Sensor Wiring Averaging Temperature Sensors Remote ON / OFF Functions...
  • Page 4 Using the Occupancy Mode Supply Air Temperature Monitoring Advanced Functions ModBus Communications Factory Test Mode High and Low Balance Points Setting Up the Heat and Cool OFF Functions Adaptive Recovery Power Up The System Specifications Troubleshooting One Year Limited Warranty...
  • Page 5 This document is not typically left with the user as it contains information on setting values. If these are not correctly set, they may damage the heating, cooling or air conditioning system or seriously affect its performance and energy consumption. Please read this instruction manual to understand the installation, testing and commissioning process. This manual is to be used with the supplied User Manual. Great care has been taken in the preparation 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 operating to their respective specifications and in a safe manner. Uni-Line reserves the right to change specifications without prior notice.

  • Page 6: Installation

    INSTALLATION As with any heating and/or air conditioning project, careful installation is the key to a successful outcome. Time taken during this installation process will be rewarded with a satisfied 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).

  • Page 7: Mounting The Smart 2000 Thermostat

    Mounting the SMART 2000 Thermostat IMPORTANT: The SMART 2000 can only be as accurate as the onboard temperature sensor, or its optional 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.
  • Page 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).

  • Page 9: Plan Your Installation

    Plan Your Installation Clock Battery Switches 1 - 8 Switches for ModBus End-Of-Line Resistor Figure 3 In addition 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)
  • Page 10 The switches must be set correctly for each system configuration. 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.
  • Page 11 Table 1 Hardware Switch Settings (Full descriptions on following pages) Switch Sw1 – Fan Speeds 1 Speed Fan 3 Speed Fan (2 Heat / 2 Cool) (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...
  • Page 12 Switch 1 – Relay Assignment Switch 1 sets the function of the fan relays as either: 3 fan speeds with 1 heat and 1 cool operation or single fan speed with 2 heat and 2 cool operations. 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 heating and the Y terminal(s) only for cooling. Heat Pump Systems use the Y terminal(s) for BOTH heating and cooling. The W1 terminal is used to control the reversing valve which determines heating or cooling mode. Switch 3 – Equipment Stages When it is necessary to control a single stage A/C system fitted with auxiliary heating elements, turn Sw3 OFF, thereby selecting single stage mode. Heating elements controlled by the W2 output are now assigned stage 2 heat.
  • Page 13 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 off. 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.
  • Page 14 Switch 8 – Thermostat Control Logic This switch has two functions based on the position of Sw6. When the thermostat is set as a programmable thermostat (Sw6 ON), Sw8 determines whether a commercial program or residential 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 heating and cooling setpoints. The two setpoint mode also permits the user to select a separate day and night setpoint if required.

  • Page 15: Wiring Diagrams

    Wiring Diagrams Heat only system (with fan control) Switch Settings Sw1 = Off (1 speed fan) Sw2 = Off (HC System) Sw3 = Off (Single Stage) W2 Y2 Sw4 = Off (HG) G2 W1 24V 24C Sw5 = Installer preference Sw6 = User requirements Factory Link...
  • Page 16 Wiring Diagrams 1 heat with add on cool Switch Settings Sw1 = Off (1 speed fan) Sw2 = Off (HC System) Sw3 = Off (Single Stage) W2 Y2 Sw4 = Off (HG) G2 W1 24V 24C Sw5 = Installer preference Sw6 = User requirements Factory Link...
  • Page 17 1 stage heat pump 1 stage fan Wiring Diagrams Switch Settings Sw1 = Off (1 speed fan) Sw2 = On (HP System) Sw3 = Off (Single Stage) W2 Y2 Sw4 = User requirements G2 W1 24V 24C Sw5 = Installer preference Sw6 = User requirements Factory Link...
  • Page 18 1 stage heat pump with auxiliary heat 1 speed indoor fan Wiring Diagrams Switch Settings Sw1 = Off (1 speed fan) Sw2 = On (HP System) Sw3 = Off (Single Stage) W2 Y2 Sw4 = Equipment Specific G2 W1 24V 24C Sw5 = Installer preference Sw6 = User requirements Factory...
  • Page 19 Gas heat Wiring Diagrams Switch Settings Sw1 = Off (1 speed fan) Sw2 = Off (HC System) Sw3 = Off (Single Stage) W2 Y2 Sw4 = Off (HG) G2 W1 24V 24C Sw5 = Installer preference Sw6 = User requirements Factory Link Sw7 = Installer preference...

  • Page 20: Before Applying Power

    If this installation will be using ModBus Communications, read the section ModBus Communications on page 44 of this manual. If this installation will be using Remote Sensors, read the section Using Remote Temperature Sensors on page 39 of this manual. before Applying Power Read the sections Commissioning and Advanced Installer Settings. Review each setting and understand how it will affect your installation. 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 operating correctly and as expected. Although the SMART 2000 is a multi-functional thermostat, commissioning is a step-by-step process. Follow the steps detailed below and use the Troubleshooting Guide on page 54 if you encounter a problem. When the thermostat is fitted to the base plate and when 24V AC power is first applied, the LCD should briefly show all available segments (an LCD function test), then display the software version number before displaying the time and operating mode.
  • Page 21 The SMART 2000 is fitted with a number of safety and energy saving time delays. If desired, these can be disabled for commissioning purposes by entering the Advanced Installer Mode and setting the CD=00 value to read CD=01. After exiting the Advanced Installer Menu you will note a WRENCH icon flashing on the LCD to remind you that Commissioning Mode is ON. IMPORTANT: After commissioning has been completed, it is important to disable Commissioning Mode by entering the Advanced Installer Menu once again and setting the CD = 01 value back to CD = 00. NOTE: When in Commissioning Mode, ALL time delays are either OFF or reduced to an extremely low value. It is therefore normal to potentially call for 3rd stage heating almost instantly 0.5 degrees below the heating setpoint. If you choose not to use Commissioning Mode you may see various words and icons flashing in the LCD whenever a time period is in use. For example, the word HEAT may flash to indicate heating is required but being held OFF by the four...

  • Page 22: Control Logic

    Control Logic Single Setpoint Mode Two Setpoint Mode Cool Stage 2 ON Cool Stage 2 ON Stage Delay Cool Stage 1 ON Cool Stage 1 ON Span Cool OFF Cool Setpoint / Cool OFF Dead Band Setpoint Dead Band Heat Setpoint / Heat OFF Heat OFF Span Heat Stage 1 ON...

  • Page 23: Advanced Installer Settings

    ADVANCED INSTALLER SETTINGS The SMART 2000 is fitted with many advanced functions that can be fine tuned by the installer to specifically match the needs of the user. Normally these functions will not need to be altered from the factory default position. There may be times when you wish to alter a setting or control capability so that the performance will match a particular application. On the next few pages, there are detailed explanations of these functions and their range of control. While in the Advanced Installer Menu, all thermostat equipment control functions will be suspended. Normal equipment operation will continue when you have exited this menu (after any anti-cycle delays or safety delays have terminated). Entering the Advanced Installer Menu To enter the Advanced Installer Menu, press and hold the O/RIDE button for 15 seconds. After 15 seconds, the LCD will show 88:15. Adjust this value to 88:21 – the factory default PIN (or your previously selected value) by using the p or  buttons. Press the O/RIDE button to enter the menu. If you have entered the correct PIN, you will be given the first menu option. If you have entered an incorrect PIN, you will be exited from this menu.

  • Page 24: Using The Advanced Installer Menu

    Using the Advanced Installer Menu To move forward through the Advanced Installer Menu items, press the O/RIDE button. To move backwards through the Advanced Installer Menu items, press the PROG button. To adjust a value in the Advanced Installer Menu, press the p or  buttons. To exit the Advanced Installer Menu, press the MODE button, the FAN button or wait 80 seconds. The functions with their default settings are listed in the order that they appear in the Advanced Installer Menu. Functions PN = 21 KEYbOARD LOCK PIN This is the required PIN for future entry into the Advanced Installer Menu. Range 00 to 99 in 01 steps. To prevent accidental PIN changes, you must press and hold the p or  buttons for longer than 1 second to change the PIN value.
  • Page 25 LC = 0 KEYbOARD LOCK LEVEL Programmable Mode (SW6=ON) LC = 00: Keyboard Lock OFF LC = 01: All buttons are locked except the temperature p or  buttons* LC = 02: All buttons are locked except the O/RIDE button and temperature p or  buttons* LC = 03: FAN and PROG buttons are locked* LC = 04: FAN, PROG and O/RIDE buttons are locked * LC = 05: All buttons locked except O/RIDE LC = 06: All buttons locked Manual Mode (SW6=Off) LC = 00: Keyboard Lock OFF LC = 01: All buttons are locked except the MODE button LC = 02: All buttons are locked except the MODE and temperature p or  buttons* LC = 03: FAN and O/RIDE buttons are locked* MODE button can only select Auto (Heat and Cool) and OFF...
  • Page 26 HL = 95 (35C) HeATiNg LiMiT (OR HigH LiMiT) The highest heating value permitted to be set by the user Adjustable between 41 to 120ºF (5 to 49ºC) CL = 45 (7C) COOLiNg LiMiT (OR LOW LiMiT) The lowest cooling value permitted to be set by the user Adjustable between 43 to 122ºF (6 to 50ºC) CF = F TEMPERATURE DISPLAY FORMAT Degree F or degree C display type. Affects all user and installer menu items C1 = 0.0 FITTED SENSOR CALIbRATION...
  • Page 27 TD = 0 TEMPERATURE DISPLAY TD = 0: The thermostat will display both the room and set temperatures TD = 1: The thermostat will display set temperature only AH = 2 AFTER HOURS OVERRIDE TIMER Start/Stop Mode: Commercial Thermostat Mode (Sw6 = ON, Sw8 = OFF) After Hour Run Time Period: Adjustable range 0 (OFF) to 12 hours in 0.5 steps Setback (1, 2, 3 ,4) Mode: Residential Programmable Mode (Sw6 = ON, Sw8 = ON). Temporary program override period. OFF = Override till next program change or 1 - 12 hours (fixed time override) ST = OFF START PROgRAM TeMPeRATuRe (COMMeRCiAL MOde) Start/Stop Mode only (Sw6 = ON, Sw8 = OFF) This sets the default temperature that will be used each time the Start program begins, regardless of any adjustments the user may have made previously. Adjustable between OFF and 59 to 95ºF (15 to 35ºC). If set to OFF, the user setpoint will not be automatically reset to a default value each day.
  • Page 28 SH = OFF STOP HeATiNg TeMPeRATuRe (COMMeRCiAL MOde) Start/Stop Mode Only. (Sw6 = ON, Sw8 = OFF) Heating temperature that will be maintained when running the STOP program (Night Setback). Adjustable between 41 to 120ºF (5 to 49ºC) + OFF. db = 1 (0.5) SiNgLe SeTPOiNT deAdbANd (See PAge 22) Deadband between Heat and Cool setpoints when in single setpoint mode (Sw8 = OFF). Adjustable between 0 and 10 degrees in 1 degree steps for Fahrenheit. Adjustable between 0 and 10 degrees in 0.5 degree steps for Celsius.
  • Page 29 FO = 2: Default in Start Stop Mode. Available only if in Programmable Mode (Sw6 = ON). The Fan will Run continuously from Program # 1 (or Start) Program to Program #4 (or Stop) Program. It will then run in AUTO mode overnight to maintain the night time setpoints. FO = 3: Available only if in Programmable Mode (Sw6 = ON). This mode is the combination of option 1 and option 2 given above. FP = 1 FAN PuRge TiMe PeRiOd (FAN RuN ON) If fan mode is Auto Fan, the indoor fan will run for FP = XX minutes after heating or cooling has stopped to extract any stored energy in the coils etc (Necessary for electric element heating). Adjustable between 0 to 5 minutes in 1-minute intervals. FN = A FuNCTiON - AvAiLAbLe equiPMeNT MOdeS FN = A: Select if controlling a Heating and Cooling system, and require Auto Changeover mode.
  • Page 30 FN = D-: Do not use. H3 = OF W2 RELAY FUNCTION Only operates in single fan speed HP mode (Sw1 = OFF and Sw2 = ON) H3=OF: W2 relay is used as 2nd (or 3rd) stage Auxiliary Heat H3=EH: W2 relay is used to control an Emergency Heating system H3=AH: W2 relay is used to control an Add On Heat system H3=AL: Will permit both Auxiliary Heat and Emergency Heating mode (both use W2 relay) H3=FF: Set up in Fossil Fuel Mode (Compressor stops with Auxiliary heat) TT = RS TT TERMINAL FUNCTION FOR REMOTE SENSORS (See PAge 39) TT = OA: Connect the outside air temperature sensor to the TT terminals to display the outside Air Temperature. Required for all outside air control functions to operate. TT = RS: Connect the remote room temperature sensor to the TT terminals to measure the temperature at a remote location away from the thermostat. Disables the temperature sensor fitted to the thermostat.
  • Page 31 TT = OC: A closed contact on the TT terminals will switch the thermostat to Occupied Mode, where the temperatures for functions OC and OH will replace the user set temperatures. See page 43. TT = DA: The thermostat will broadcast the measured temperature from the remote temperature sensor via ModBus. It will not display this value on the LCD, nor is it used for any control option. This mode is intended to provide system feedback to the ModBus master only. TT = 2P: The function is intended for controlling a two pipe fan coil. The mode of the thermostat (heating or cooling) will be determined solely on the temperature as measured by the remote sensor. The remote sensor (SMART-R-03) is typically strapped to the fan coil water supply line. The mode button only permits the user to select OFF or ON, where ON is either heat or cool mode based on the...
  • Page 32 OH = OFF OCCuPied MOde HeAT SeT (See PAge 43) Only operates if TT = OC This is the heating temperature that will be used in Occupied Mode and will temporarily replace the user heat setpoint while the TT terminals are shorted together. Adjustable range is 41 to 120ºF (5.0 to 49ºC) OC = OFF OCCuPied MOde COOL SeT (See PAge 43). Only operates if TT = OC.
  • Page 33 Sd = 2 STAge 2 SPAN (See PAge 22) Hysteresis for Stage Two. (difference between heating and cooling turning ON and OFF) SD = 1: 0.5 degree SD = 2: 1.0 degree SD = 3: 1.5 degree S3 = 3 STAge 3 HeAT SPAN (See PAge 22) When set to two stage heat pump (Sw2 = ON), this value sets the span for the 3rd stage heating. S3 = 1: 0.5 S3 = 2: 1.0 S3 = 3: 1.5 SU = 10 SMART UPSTAGE When the room temperature is far enough from the set temperature to call extra heating and cooling stages, the thermostat will wait the minimum SU = time value before bringing on extra stages. This delay provides time for...
  • Page 34 DT = 20 UPSTAGE DELAY TIME Time in minutes before next stage of heating or cooling is to be called. Delay only operates if the stage trip temperature has not yet been reached. Adjustable between OFF, 5 to 90 minutes in five minute steps. OS = 0 OPTiMized START/STOP (AdAPTive ReCOveRy) (See PAge 48) OS = 0: Optimized start/stop function OFF OS = 1: Optimized start/stop function RUNNING C2 = 0.0 CALIbRATION REMOTE SENSOR Calibration Offset for the TT terminal temperature sensor Adjustable range +/- 9°F degrees (4.5°C degrees).
  • Page 35 HO = 90ºF (32ºC) HeATiNg OFF TeMPeRATuRe - (See PAge 48 FOR MORe deTAiL) Only operates if TT=OA and outside temperature sensor is fitted. Outside air temperature above this value will force the heating function OFF. Adjustable between 41 to 122ºF (5 to 50ºC). Hb = 95ºF (35ºC) HigH bALANCe POiNT (See PAge 47) TT = OA: The outside temperature sensor must be fitted and Sw 1 = OFF. 2nd (or 3rd) stage heating is locked out when the outside air is above this temperature. Adjustable between 41 to 122ºF (5 to 50ºC). Lb = 40ºF (4ºC) LOW bALANCe POiNT (See PAge 48) TT = OA: The outside temperature sensor fitted, H3 = EH, Sw 1 = OFF and Sw2 = ON. Outside temperatures below this value will automatically...
  • Page 36 bD = 19.2 MODbUS bAUD RATE BD = 4.8: ModBus baud rate is 4,800 Baud BD = 9.6: ModBus baud rate is 9,600 Baud BD = 19.2: ModBus baud rate is 19,200 Baud Cd = 0 COMMiSSiONiNg MOde (See PAge 20) CD = 0: Commissioning mode is OFF CD = 1: All time delays are OFF or reduced to a very small value PA = 0 SETS COMMUNICATION PARITY FOR MODbUS COMMUNICATIONS PA = 0: None set PA = 1: Even parity PA = 2: Odd parity SS = 0 START STOP MOde OveRRide (TyPiCALLy uSed by MOdbuS MASTeR) SS = 0: User Start Stop program in use...
  • Page 37 OVERRIDE FUNCTION OF = 0: The thermostat will control its own relays (Default) OF = 1: The five thermostat relays are being controlled via a ModBus master only. No thermostat buttons will function and all programming and control information is suppressed. The word Override will flash during this mode. The thermostat will automatically exit this mode if no valid ModBus signals have been received for five minutes. RS = 40 THERMOSTAT SENSOR RESPONSE TIME TO ROOM TEMPERATURE CHANGES Adjustable from RS = 10 (very fast) to RS = 90 (very slow). Default is RS = 40 TS = 0 FACTORy TeST MOde (See PAge 47) TS = 0: Factory test Mode OFF TS = 1: Display configuration code* TS = 2: Step cycle all relays in sequence, 1 2 3 4 5 etc TS = 3: Reset software to factory default. Press Fan button to initiate * This table is available from the download section at www.robertshaw.com.
  • Page 38 REMOTE TEMPERATURE SENSOR DIP SWITCH POSITIONS ON = RT1: Single sensor OFF = RT1 and RT2: At least two sensors for averaging When the DIP switch is in ON position, thermistor reflects 10KΩ resistance for single sensor applications. When the DIP switch is in OFF position, a minimum of two sensors are required to average the temperature.

  • Page 39: Using Remote Temperature Sensors

    USING REMOTE TEMPERATURE SENSORS SMART-R-02 SMART-R-02 SMART-R-02 SMART-R-02 SMART-R-02 SMART-R-02 Remote Sensor Remote Sensor Remote Sensor Remote Sensor Remote Sensor Remote Sensor Figure 15 Sensor Figure 16 Averaging Figure 17 Averaging Sensors with DIP Sw ON Sensors with DIP Sw OFF with DIP Sw OFF Inline Inline Override ON/OFF Switch Switch SMART-R-02 SMART-R-02 SMART-R-02 SMART-R-02 SMART-R-02...
  • Page 40 The SMART 2000 has the capabilities to be a fully programmable networking thermostat. If Remote Sensor and ModBus Communication are NOT being used, skip over Using Remote Temperature Sensors and Advanced Functions. Proceed to the section Power Up The System. The thermostat has a set of terminals marked TT. Wires connected to these two terminals are not polarity dependent and normally do not require shielded cable. Single or multiple room air temperature sensors can be connected to the thermostat TT terminals if temperature averaging over a larger area is desired. Four examples are shown of commonly used sensor configurations in Figure 15 through Figure 18. NOTE: Either TT = RS (remote sensor) or TT = AV (averaging sensors) value must be set in the Advanced Installer Menu for these sensors to be used. Please note the configuration of SMART-R-02 sensor in the examples provided in Figure 17. Other sensor configurations are also available.

  • Page 41: Outside Air Sensor Wiring

    When used in Start / Stop Commercial Programmable Mode (Sw6 = ON, Sw8 = OFF), the after hours run timer can be toggled ON or OFF as required with a momentary press of a button on the remote sensor. See Figure 20. Outside Air Sensor Wiring Set TT = OA in the Advanced Installer Menu The SMART 2000 can display the outside air temperature if desired. Some advanced control functions such as high and low balance points rely on this sensor for correct operation. Using a single pair of wires, connect the TT terminals in the thermostat to the two terminals in the outside air temperature sensor. See Figure 21. If the outside air sensor fails, two dashes will be shown on the LCD where the outside air temperature would normally be displayed to alert you of the problem. SMART 2000 Switch SMART 2000 SMART 2000 ON/OFF Switch SMART-R-02 SMART-R-02...

  • Page 42: Remote Air Temperature Sensor Wiring

    Remote Air Temperature Sensor Wiring Set TT= RS in the Advanced installer menu (default) When you wish to measure the temperature from a location distant from the wall controller, connect a remote temperature sensor to the TT terminals in the SMART 2000. This will automatically disable the sensor fitted to the wall controller and use the remote temperature sensor(s) to control the room temperature. See Figure 21. Should you wish, you can switch the remote temperature sensor ON and OFF, switching temperature sensing locations between the remote temperature sensor and the thermostat temperature sensor when required. Fit an inline switch in the sensor wiring or order SMART-R-02 sensor. See Figure 22. Averaging Temperature Sensors Set TT = AV in the Advanced Installer Menu The SMART 2000 can average the sensed temperature equally between the remote temperature sensor(s) and the one fitted to the thermostat if required.

  • Page 43: Remote On / Off Functions

    Remote ON / OFF Functions Set TT = OF in the Advanced Installer Menu The SMART 2000 can be connected to an external dry contact, when this contact is closed the thermostat will turn OFF. See Figure 23. When the thermostat has been switched OFF by the TT terminals the word OFF will flash in the LCD to indicate that this has been the shutdown method. The thermostat will return to the user settings when this switch is OPEN. Using the Occupancy Mode Set TT = OC in the Advanced Installer Menu The SMART 2000 can alternate between the user preferred setpoints and an installer preprogrammed setpoint when required. Simply wire a remote switch to the thermostat TT terminals. See Figure 23. When the switch is OPEN, the...

  • Page 44: Supply Air Temperature Monitoring

    ModBus ONLY. This value is not used by the thermostat nor is it displayed on the LCD. It is expected that this information is used for supervisory functions or equipment control feedback. Also, as this is an analog input, by monitoring a switched resistor network your supervisory software can decode a number of digital states. ADVANCED FUNCTIONS Modbus Communications The SMART 2000 has integrated ModBus communications capabilities where, a remote PC or building Direct Digital Control (DDC) system may view or adjust many of the thermostat functions remotely. It is not the scope of this manual to provide detail on the communication capability of the SMART 2000. ModBus communications detail is available for download from the download page at www.robertshaw.com.
  • Page 45 The communications port of the SMART 2000 has two terminals marked A and B. See Figure 24. Terminals A+ and B- are used for communication. Figure 24 A maximum of 32 SMART 2000 thermostats can be connected to any single hub. Each thermostat on the hub must have a unique network address (factory default is 7). These settings are adjustable from 1 to 99 in the Advanced Installer Menu. A typical ModBus wiring example is shown in Figure 25. If using a common power supply to power all thermostats on a network, it is highly recommended that all power is wired in phase, i.e. R to R and C to C and NOT crossed. ModBus Thermostat Thermostat Thermostat Master Power COMS Power COMS Power COMS 24 24C B A T 24 24C B A T 24 24C B A T Figure 25...
  • Page 46 In many cases where multiple thermostats are used in a single network or on a long network run, the two place DIP switch located between the R and R/Com terminals on the thermostat circuit board should be switched ON to improve network reliability. It is essential that the network be wired as a daisy chain as show in Figure 26. Figure 27 and Figure 28 show examples of how NOT to wire a ModBus network. ModBus Master SMART 2000 SMART 2000 SMART 2000 SMART 2000 Figure 26 Correct Wiring SMART 2000 SMART 2000 SMART 2000 ModBus ModBus Master Master SMART 2000...

  • Page 47: Factory Test Mode

    Factory Test Mode The SMART 2000 is fitted with a simple factory Test Mode. In the Advanced Installer Menu, use function TS to test all relays, output functions and the current configuration of the thermostat settings. TS = 0: Factory Test Function is OFF TS = 1: Display DIP switch configuration code TS = 2: Relay test mode. All relays cycle ON then OFF in an endless loop TS = 3: Factory Software reset – Press Fan button to confirm High and Low balance Points The SMART 2000 is fitted with both High and Low Balance Point control capability. For these functions to operate the Advanced Installer setting must be TT = OA (outside air temperature sensor fitted), the outside air sensor must be installed and Sw1 must be OFF (single fan speed mode). High balance Point Set the Advanced Installer Menu value HB = XX. When the outside air temperature is above this value, second or third stages of heating are held off regardless of the room and set temperature. Set this function to prevent the excessive consumption of energy when the outside air temperature is warm enough not to require additional heating stages to be used.

  • Page 48: Setting Up The Heat And Cool Off Functions

    Low balance Point SW2 = ON, H3 = EH (Emergency Heat Mode) Set the Advanced Installer Menu value LB = XX. When the outside air temperature is below this value, the thermostat will automatically switch to emergency heat mode when heating is required. If the outside temperature is above this LB = XX value, the emergency heat mode can be selected manually at anytime with the MODE button. Setting Up the Heat and Cool OFF Functions To conserve energy, the SMART 2000 can suspend the heating or cooling functions if the outside air temperature is within a prescribed set range. If the outside air temperature is above the Advanced Installer setting HO = XX (heating OFF) value, heating will not be called regardless of the room and set temperature. If the outside air temperature is below the CO=XX value, cooling will not be called regardless of the room and set temperature. Heat or Cool and the word Locked will flash on the LCD to show that these modes have been restricted.

  • Page 49: Power Up The System

    For example, if the user typically returns home at 5:00 pm, set program #3 (if used in residential programmable mode) to 5:00 pm. The thermostat will calculate the most energy efficient time, based on set and room temperatures as well as a history of temperature change, to turn ON the equipment prior to 5:00 pm. The desired set temperature will be reached by 5:00 pm. For example, when heating is required, the heating may start at 4:32 pm so the set temperature is reached at 5:00 pm. Adaptive recovery may also prevent the thermostat from running for a few moments just prior to a program change occuring. RECO is shown in the LCD whenever Adaptive recovery is being used. POWER UP THE SYSTEM At this time: • The thermostat should be mounted and wired. • Any advanced communication modules should be wired to the thermostat terminals.
  • Page 50 Turn ON the equipment and power the SMART 2000. When power is first applied, the thermostat will perform a test display that lights all the segments of the LCD. This is followed by the software version, then the running display. Enter the Advanced Installer settings menus. If making changes proceed through the functions and make any changes that are required. Exit the settings and perform the following tests. Test fan operation With the thermostat OFF (press the MODE button to show OFF in the LCD), press the FAN button to cycle through the available fan speeds. As the LCD changes to show the fan speed or fan mode you should hear faint “clicks” as the thermostat internal relays change. The equipment fan speed should change accordingly.
  • Page 51 Use the Temp p or  buttons to set the desired temperature a few degrees above the ambient temperature. After a few moments, you will hear a click and the word COOL will change to COOLING. Verify that the cooling system is ON and operating correctly. If stage 2 cool is being called for, the thermostat will display MODE. (with a period after the word MODE) to indicate 2nd stage cool. Press the MODE button to turn the thermostat OFF. After any necessary timers have expired, all heating, cooling and fan functions should stop. Verify that the system has shut down. NOTE: Anti-cycle delay timer and other minimum delay timers may need a mini- mum of four minutes before activating heating or cooling equipment. In HP mode (Sw2 = ON) it is normal for the reversing valve to remain energized after the compressor has stopped. This is done to prevent “de-compression HISS” and to limit the wear on the reversing valve.

  • Page 52: Specifications

    SPECIFICATIONS Input Voltage 24V AC 50/60 Hz +/- 15% Relay Rating 24V AC @ 1 Amp maximum per relay Operating Temperature 32 to 122ºF (0 to 50ºC) Operating RH 0 - 95% (non condensing) Storage Temperature 32 to 150ºF (0 to 65ºC) Size 4.5" x 4" x 1" (113 x 103 x 23 mm) Display Size 2.9" x 2.2" (74 x 55 mm) Temperature Sensor(s) NTC type 3 - 10KΩ in ON position/20KΩ in OFF position Accuracy in ON position +/- 3 ºF degrees @ 77ºF (+/- 0.3 ºC degrees @ 25ºC) Accuracy in OFF position +/- 3 ºF degrees @ 34ºF (+/- 0.3 ºC degrees @ 1ºC) Stage Delays Minimum temperature change over time method Timed Upstage Delay 5 - 90 minutes Anti-Cycle Delay Off to 4 minutes...
  • Page 53 SPECIFICATIONS Adaptive Recovery Method Time to start vs temp differential method - updating Communications Protocol ModBus – contact Robertshaw for objects list Fan Speeds Based on difference between room and set temp Approvals FCC (Part 15) (pending), C-tick Warranty 1 year RTB Table 2 Sensor Reference Table KΩ 24.3 22.0 20.0 18.1 16.2 14.3 13.7 12.5 11.4 10.4 10.0 9.57 8.75 8.05 (Default) ºC ºF 42.8 46.4 53.6 57.2 60.8 64.4...

  • Page 54: Troubleshooting

    TROUbLESHOOTING Symptom Problem Solution Temperature Air from the wall cavity may Plug holes in wall with tape to display seems be leaking into the rear of the prevent leaks. inaccurate. thermostat / sensor enclosure. The internally fitted temperature Carefully move the room sensor is folded back inside temperature sensor bead so the thermostat and not being that it is just behind the sensor...
  • Page 55 Symptom Problem Solution “Locked” appears This is not a fault. The HO = XX and/or CO = XX value on LCD and is inhibiting heating or cooling Outside air temp too high to heating or cooling calls. Change these values in the require heating. will not operate. Advanced Installer Menu. See Outside air temp too low to page 34. require cooling.
  • Page 56 Symptom Problem Solution Reversing This is not a fault. The reversing valve remains valve remains energized after the heating/ energized after cooling has stopped to limit heating or cooling decompression hiss. Reversing has stopped. valve will de-energize within two hours of the last call. Wrench Symbol This is not a fault. Exit commissioning mode before flashes on LCD.
  • Page 57 Symptom Problem Solution Some buttons Keyboard lock is ON. Advanced LC = XX value in do not appear to Installer Menu set the lock operate. Padlock values, see page 25. is show on LCD. Cannot enter Thermostat set for Heating or Heating or cooling mode not heat or cool cooling only modes. available on your system. modes. Cannot set This is not a fault.
  • Page 58 Symptom Problem Solution The Fan runs on This is not a fault. The fan purge mode is set. FP = for some time XX value. after the heating or cooling stops, even when I turn the thermostat OFF. Thermostat The thermostat can operate in See page 26 for changing the displays wrong both Deg F and Deg C mode as CF = XX value.

  • Page 59: One Year Limited Warranty

    ONE YEAR LIMITED WARRANTY Robertshaw warrants to the original contract installer, or to the original consumer user, that each new Robertshaw thermostat will be free of defects in materials and workmanship under normal use and service for a period of one (1) year from the date of purchase (the “Warranty Period”). If any Product fails within the applicable Warranty Period, Robertshaw shall, at its option, repair or replace the Product or credit the purchase price, provided the Product is returned to Robertshaw’s facility or designated agent with transportation charges prepaid, and the Product, upon examination by Robertshaw, is found not to conform to the Warranty. Cost of Product removal, labor, or reinstallation of new Product are not covered...
  • Page 60 Product during transit. The Warranty terms above shall not apply to any items damaged in transit. 3. An itemized packing slip, including owner's name and address, is required for each shipment to Company of Product(s) to be considered for warranty. The packing slip must contain reason for warranty return, date of installation, date of failure, and a contact name in case further information is required. 4. Within North America (USA and Canada), all cartons must be clearly identified as WARRANTY PRODUCT and returned to: USA Distributors: Warranty Department Robertshaw 1921 Anei Circle, Brownsville, TX 78521 USA Canada Distributors: Warranty Department Robertshaw 4060 Ridgeway Drive, Unit 14 Mississauga, ON L5L5X9 CANADA...
  • Page 62 Robertshaw®, Uni-Line® and SmartSense are trademarks of Robertshaw, its subsidiaries and/or affiliated companies. All other brands mentioned may be the trademarks of their respective owners. Customer Service Telephone 1.800.304.6563 Customer Service Facsimile 1.800.426.0804 HVACCustomerService@robertshaw.com For Technical Service www.uni-line.com www.robertshaw.com Telephone 1.800.445.8299 ©2015 Robertshaw Facsimile 1.630.260.7294 TechnicalService@robertshaw.com 2/15 – 352-00193-001...

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Smart 2000

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