Tantalus ST-1480 Smart Thermostat Operating and Installation Manual © All Rights Reserved AW000245-DRAFT
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Operating and Installation Manual Congratulations on the purchase of your new thermostat. It has been designed for easy programming to save you on energy costs and allow a comfortable living environment.
Table of Contents OPERATING THE THERMOSTAT...........................................................................7 WORKING MODES ..............................................................................................................7 NORMAL OPERA TING MODE ............................................................................................8 NAVIGATING THE CONTROLS ..........................................................................................8 HOME SCREEN.......................
SCHEDULE....................................................................................................................23 CHANGE FILTER REMINDER.......................................................................................24 POWER OUTAGES ...........................................................................................................24 THERMOSTAT CONSERVATION MODE .........................................................................25 USER CONSERVE MODE..........................
RESET ...............................................................................................................................39 CONVENTIONAL SYSTEM TEST .....................................................................................40 HEAT-PUMP SYSTEM TEST ............................................................................................41 PRODUCT CONFORMITY.................................................................................................42 NOTES ......................
OPERATING THE THERMOSTAT Working Modes The thermostat has two working modes: • • Normal Operating Mode : In this mode you can program the SETPOINT temperatures, the schedules and remaining parameters of the thermostat configuration. Conservation Mode : When set in this mode by either you or through a remote request from your utility, the scheduled SETPOINT values are modified to save energy; you cannot modify any settings that may affect the objective temperatures or the HVAC equipment operation.
NORMAL OPERATING MODE Navigating the Controls The function of the LEFT and RIGHT TAB buttons appears on the bottom of the display screen. Use the SCROLL (? ? ) buttons to move through the menu items and options, and to change highlighted values. Press the SELECT (v ) button to select or accept highlighted menu items. You can always go back or cancel prior to saving changes.
Home Screen The Home Screen displays current temperature and operation data. To view this screen when the backlight is off just press any of the buttons . Icons such as the heat or fan are animated when the equipment is running.
Title Bar The current time is displayed in the upper right corner of the Title Bar while in the upper left corner there is an icon showing the communications link status between the thermostat and the utility meter: means Link OFF, means Link ON, The Title Bar also displays messages sent through the communications link to you by your utility (e.g., the Electricity Rate). HELP button The HELP ? button provides you with information on how to navigate through the individual menu screens.
Setting the Time The current date and time need to be set at initial installation and after battery replacement. You can change the day, time, enable a 24h clock readout, and change from daylight saving to standard time by selecting TIME from the Main Menu. You can always change between 12H or 24H clock format. Press the Left Tab button on the home screen to view the Main Menu Use the SCROLL buttons to select the TIME menu. Press SELECT to enter the TIME menu.
Default Schedule The thermostat’s Schedule is factory programmed in accordance with EnergyStar guidelineswhich define the START TIMES and SETPOINTS listed below (Note that a SETPOINT is defined by a NAME, and HEAT & COOL temperatures). The thermostat anticipates the time required to reach a desired temperature prior to the start of the SETPOINT time; therefore, you only need to set the desired time for the SETPOINT temperature. SCHEDULE Mon. to Fri. START TIMES Sat. & Sun.
Temporary HOLD You temporarily adjust the temperature warmer or cooler, without affecting the pre-set programming, through the use of a temporary hold. The thermostat will remain at the temporary HOLD temperature until the next scheduled SETPOINT. From the home screen, press either of the SCROLL buttons to view this screen. Continue to press either of the SCROLL buttons to highlight the operating target SETPOINT (HEAT or COOL), which will be underlined.
Heating and Cooling Modes The thermostat is pre-set for heating operation (HEAT). You can manually change the operating mode between AUTO, HEAT, COOL, OFF, and, for heat pump applications with auxiliary heat, EMERG. Press the RIGHT TAB button on the home screen to view this screen. Use the SCROLL buttons to select the desired operating mode. Press SELECT to engage the operating mode.
Fan Modes You can manually change the fan mode between AUTO and ON. Press the Right Tab button on the home screen to view this screen SCROLL through the operating modes to get to the fan modes, then press SELECT to engage the desired fan mode. AUTO: The fan runs only when the heating, cooling, or emergency systems are on. For conventional systems with the option FAN ON IN HEAT set to NO, the fan is not controlled by the thermostat but by the furnace. ON: The fan runs continuously.
Temperature Settings A SETPOINT is defined by a NAME, and HEAT & COOL temperatures. Example: If the SETPOINT is set to WAKE, a thermostat operating in AUTO mode will keep your dwelling’s temperature at the predefined HEAT or COOL temperature. In the summer, the thermostat will COOL your dwelling down to 78°F. In the fall, the thermostat will engage the HEAT mode, heating your dwelling up to 70°F throughout the winter. In the spring, when temperatures rise again, the thermostat will change back to COOL mode.
Temperature Settings (continued) To change the name of a SETPOINT, press EDIT NAME and change the SETPOINT’s name by using the SCROLL and SELECT buttons. Use SELECT to move the cursor to the next position and SCROLL to find the desired letter or blank (empty) character.
Schedule The SCHEDULE determines when a SETPOINT such as WAKE begins. Only the start times are defined. The SETPOINT ends when the next SETPOINT starts. To delete a start time, SCROLL down the list of start times, and SELECT it; press SELECT again to underline the associated SETPOINT name and SCROLL until NOT USED is underlined, i.e. the SETPOINT will be NOT USED in this case. The PROGRAM window displays the SETPOINT associated with the start time on the right.
Permanent, Timed, and Vacation HOLDs The SCHEDULE can be modified to maintain a desired SETPOINT through either a: • Permanent HOLD (HOLD until cancelled) • Timed HOLD (HOLD for 1 to 99 hours, or 1 to 99 days) • Vacation HOLD (HOLD until a set date) Choose HOLD from the main Menu then select the HOLD TYPE, press SELECT, then SCROLL to the desired HOLD TYPE and press SELECT again. Permanent HOLD Using the arrow keys, change the HOLD TYPE to PERMANENT and press the SELECT key.
Permanent, Timed, and Vacation HOLDs (continued) Timed HOLD In TIMED HOLD, choose between 1 and 99 (in hours or days). You can also choose the SETPOINT to HOLD. Press SAVE CHANGES to accept the new settings and initiate the HOLD. To cancel the HOLD, return to the HOLD menu and press CANCEL HOLD. Vacation HOLD Choose the HOLD UNTIL date in VACATION HOLD. You can also choose the SETPOINT to HOLD. Press SAVE CHANGES to accept the new settings and initiate the HOLD.
Temperature Units and Calibration The display can be set to display Fahrenheit (°F) or Celsius (°C) units. If you measure the temperature yourself or believe this thermostat’s displayed temperature is off slightly, then you can easily calibrate the thermostat’s display temperature by up to +/- 5.4°F (+/- 3°C) using these steps. SELECT TEMPERATURE from the Main Menu. Change the UNITS by pressing SELECT on the UNITS line, then SCROLL between FAHRENHEIT (°F) and CELSIUS (°C).
Service Information Information regarding your service contractor can be programmed into the thermostat for future reference. Choose SERVICE INFO from the main Menu. Press EDIT NAME and enter the name and contact information using the SCROLL and SELECT buttons . After pressing SAVE CHANGES scroll to the next line if you need to enter additional information; then follow the procedure just described.
User Options Languages The thermostat can be set to English or Spanish through the USER OPTIONS menu. To change from ENGLISH to SPANISH, SCROLL to the USER OPTIONS on the Main Menu. Press SELECT on the LANGUAGES line. SCROLL to the ESPA ÑOL choice (underlined). Press SAVE CHANGES to save. Schedule There are three choices for the weekly schedule.
Change Filter Reminder A CHANGE FILTER reminder may also be set in the USER OPTIONS menu. It can be set from 0 to 12 months. Setting it to 0 months effectively disables the CHANGE FILTER reminder. After the CHANGE FILTER reminder is enabled, the value shown by this screen will decrease each month. When it reaches 0, the CHANGE FILTER reminder alarmappears. You can clear the alarm by touching CLEAR ALARM. In order to re-enable the CHANGE FILTER reminder, set the desired period and touch SAVE CHANGES.
THERMOSTAT CONSERVATION MODE The Conservation Mode of the thermostat allows either you or your utility to modify scheduled and HOLD SETPOINTs to reduce energy consumption. These controls are active when in the Conservation Mode: • CONSERVE Status Light • CONSERVE Button • HOME Led There are two Conservation Modes: User Conserve and Utility Conserve.
User Conserve Mode You can initiate the User Conserve Mode in your thermostat by pressing the Conserve Button. This action will turn ON the Conserve Status light Green. At this point, the thermostat will set back the current SETPOINT (HOLD or scheduled SETPOINT) by a fixed value of 1°C to conserve energy. The SETPOINT’s name at the Home Screen of the thermostat will be replaced by a label showing “Conserve”.
During the Conserve Mode you will only be able to modify the following parameters: Language 24 hour Time Format Change Filter Reminder Contact Information Exit from User Conserve Mode To exit the User Conserve Mode, press the Conserve Button again and the thermostat will go back to its regular schedule or applicable HOLD. The Green Conserve Status light will turn OFF.
Utility Conserve Mode If your utility offers a energy reduction plan and you are enrolled in the program, your utility can start a Utility Conserve Mode. This allows your utility to send a signal over the communications link to increment the temperature a few degrees (when using the cooling system) or decrement it a few degrees (when using the heating system). At this point, the thermostat will set back the current SETPOINT (HOLD or scheduled SETPOINT) by a fixed value of 2°C to conserve energy.
Note that you will not be able to change any scheduled or HOLD SETPOINTs while you are in the Utilty Conserve Mode, you will have to exit this mode before you can make those changes.
INSTALLATION AND MAINTENANCE The thermostat must be in the Normal Operating Mode in order to access to the configuration settings required for the installation and maintenance. Mounting the Thermostat Install the thermostat at 5 feet (1.5m) above the floor in an area with good air circulation at average temperature.
Removing Thermostat Front Housing from Backplate To remove the thermostat front housing from the backplate, press the plastic tab located at the bottom of the thermostat. Pull the bottom of the front housing forward and remove. Replacing the Battery A LOW BATTERY WARNING will appear when the battery falls below 10% of its rated capacity. This procedure does not lose the thermostat settings; however, time settings will require reprogramming. Replace with a CR-2032 battery.
Wiring Configuration See Wiring Table on the next page.
Wiring Configuration (Continued) This thermostat should be wired by a licensed technician familiar with HVAC installation.
Setup Menu Options WARNING: Changing settings in the SETUP can damage the HVAC system and should only be done by a qualified HVAC technician. Password Two levels of password protection are programmed in this thermostat: USER and INSTALLER. Both password levels will timeout after 20 minutes of the last button press and force you to re-enter a password. The default INSTALLER password is INST.
SETPOINT Range The SETPT RANGE sub menu defines the Maximum and Minimum temperatures allowed in the HEAT and COOL modes. Adjusting these temperatures limits the temperature ranges allowed when setting SETPOINT temperatures. Equipment Type WARNING: The thermostat must be configured correctly to match the equipment type. The number of cooling and heating stages must be defined in the Conventional or Heat Pump setting.
Equipment Settings Conventional Systems You must enter an Installer Password to access the EQUIPMENT SETTINGS from the Main Menu. The following settings can be changed for Conventional Systems: MIN ON/OFF TIME FAN ON IN HEAT (this option only applies to the furnace) Page 36 DEFAULT OPTION 3 MIN 1-6 MIN Minimum cycle time for the furnace/air conditioner. YES NO The fan turns on when the The furnace waits until enough thermostat sends the fan on heat is built up before turning on signal.
Heat Pump Systems You must enter an Installer Password to access the EQUIPMENT SETTINGS from the Main Menu. The following settings can be changed for Heat Pump Systems: MIN ON/OFF TIME ALLOW HP+AUX ON BALANCE POINTS DEFAULT OPTION 3 MIN 1-6 MIN Minimum cycle time for the heat pump/auxiliary heater. YES NO Allows the Heat Pump and Does not allow Heat Pump and Auxiliary Heat to be on at the Auxiliary Heat to be on at the same same time. time (add-on configuration).
Control Options You must enter an Installer Password to access the CONTROL menu from the Main Menu. The following settings can be changed: DEFAULT CHANGE HYSTERESIS ANTICIPATION TIME MAX RECOVERY TIME OPTION 0-6°F 2°F (1°C) (0-3°C) Defines the number of degrees the temperature must go beyond a SETPOINT prior to changing from HEAT to COOL mode or vice versa in AUTO mode. 60 MIN 0 – 180 MIN The time limit the thermostat is allowed to engage the equipment to reach a desired temperature.
Reset A SETPOINT’s RESET restores the thermostat’s default EnergyStar SETPOINTs. A FULL SYSTEM RESET restores the thermostat to the following original manufacturer settings.
Conventional System Test This procedure allows the installer to bypass delays associated with the minimum on/off times.
Heat-Pump System Test This procedure allows the installer to bypass delays associated with the minimum on/off times.
Product Conformity This equipment, if installed in strict accordance with the manufacturer’s instructions, complies with the limits for a Class B computing device pursuant to Part 15 of FCC rules. This equipment, if installed in strict accordance with the manufacturer’s instructions, complies with the requirements of IEC 60730-1 for EMC emissions and immunity. This equipment is RoHS compliant. The battery in this thermostat may contain perchlorate material - special handling may be necessary. www.dtsc.ca.
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