Table of Contents Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation Guide . . . . . . . . . . . . . . . . . . . . 4 Diagrams / Operation . . . . . . . . . . . . . . . . 15 LCD Display Diagrams . . . . . . . . . . . . . . . . . 16 Set ºC or ºF . . . . . . . . . . . . . . . . . . . . . . . . . 20 Set Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Program Heating / Cooling . . . . . . . . . . . . . 23 Humidifier control . . . . . . . . . . . . . . . . . . . . .
FEATURES Thermostat Compatible with central hea ting/air co nditioning system s for autom atic temperature con trol l Automatic chan ge-over for HEATING/COOLING prog rams l Connects to hum idif ier for autom atic hum idit y con trol l Displays temperature (°C / °F) l Remote temperature con trol via rem ote sens or / transm itter l Extra-l arge LCD display with bac klight l Clock d isplay (12 or 24 hou r format) l Temperature can be set in half de gree s l Automatic, m anual and fan modes l Selectable cycle
Installation Guide 4
Installation Guide Introduction This thermostat can replace common residential thermostats. It is designed for use with most central heating and air conditioning systems that use low voltage (24V or millivolt) system control. Please see compatibility chart on the next page for more details. Warning We recommend consulting a licenced HVAC contractor to ensure the correct installation of the thermostat. The only way to guarantee proper wiring is to have a qualified professional on site.
Compatibility Generally, equipment with low voltage (24V or millivolt) system control is compatible with heating/cooling programmable thermostats.
Installation The following tools may be required for installation: ( Power drill with a 3/16” bit ) Screwdriver ( If necessary, to drill holes on the wall ) Masking Tape (To wrap the exposed wires temporarily and to label the disconnected wires) Level (If necessary, to level the thermostat) Wire Stripper/Cutter (If necessary, to strip the wires) Batteries (included) 7
Choosing a location for the thermostat Thermostat should be mounted: Approximately 5’ (1.5 m) from floor. l Near or in a frequently used room, preferably on an inside partitioning wall. l On a section of wall without pipes or duct-work. l Thermostat should NOT be mounted: Near a window, on an outside wall, or next to a door leading outside. l Exposed to direct light or heat from a lamp, sun, fireplace, or other temperature-radiating objects which may cause false readings.
Replacing the Old Thermostat Test the system to make sure that your heating and cooling systems are working properly before installation (If either does not work, contact a heating/air conditioning service person to fix the problem before installation) l TURN OFF POWER to system at the furnace, or at the fuse/circuit breaker panel l Carefully unpack your new thermostat and mounting plate; save package of screws, instructions and receipt l Wiring NOTE: WIRING COLORS ARE NOT ALWAYS STANDARDIZED, SO IT IS VER
Wiring Key 2-WIRE HEATING Regular Wiring G - Fan output Y - Cool output H1 / H2 - Humidifier control Rc - Common for Cooling and Fan Rh - Common for Heating W - Heat output (OPTIONAL) JUMPER W Rh Rc Y G H1 H2 3-WIRE HEATING 2 Wire Heating Rc / Rh - Common (Rc and Rh jumper is optional) W Rh Rc Y 3 Wire Heating Rc / Rh - Common (Rc and Rh must be connected with jumper) G H1 H2 10
Wiring Diagrams Wiring Key 4-WIRE HEATING/COOLING W Rh Rc Y Regular Wiring G - Fan output Y - Cool output H1 / H2 - Humidifier control Rc - Common for Cooling and Fan Rh - Common for Heating W - Heat output G H1 H2 5-WIRE HEATING/COOLING 4 Wire Heating Rc / Rh - Common (Rc and Rh must be connected with jumper) W Rh Rc Y G H1 H2 11 5 Wire Heating 2 separate transformers (Heat / Cool) Rc / Rh - Common (wire separately, jumper must not be installed)
Humidifier Wiring To wire a humidifier, the 2 wires connecting the original humidistat need to be connected to the 2 terminals marked 'H1' and 'H2' on the thermostat. l The original humidistat should be removed or set to 'OFF' position. l Note: The 2 humidifier control terminals 'H1' and 'H2' are electrically isolated from the Heat/Cool terminals. Note: H1 and H2 terminals are non polarized and there is no function difference between H1 and H2.
Connecting the Wires to the Terminals Connect the previously labeled wires to the corresponding terminals, matching the designations. Use a screwdriver to loosen the terminal, wrap the wires around the terminal then tighten to securely fasten the wires. Make sure the wires do not touch or short-circuit with other terminals.
Mounting the back cover of the thermostat The back cover should be mounted vertically with the terminals on the top Thread the existing wiring through the big center hole from the back and set the back cover vertically on the wall l Select two appropriate mounting holes and mark the locations with a pencil (If necessary, use a level to make sure the thermostat is positioned straight) l Remove the back cover from the wall and drill two 3/16" inch holes in the marked screw positions l Insert the wall anchors
Diagrams and Operation 15
Thermostat LCD display CLOCK WEEKDAY PROGRAM NUMBER USAGE MONITOR CLOCK SYMBOL SET/PROGRAM TEMPERATURE flashes when the lithium battery is low OVERRIDE INDICATION SET CLOCK REMOTE SENSOR LOW BATTERY THERMOSTAT LOW BATTERY HOLD FUNCTION SET OPTIONS FILTER CHANGE INDICATION REMOTE SENSOR TEMPERATURE CONTROL HUMIDITY FAN VENTILATION MODES REMOTE TEMPERATURE OPERATION MODES HEAT/COOL RUNNING 16 THERMOSTAT TEMPERATURE, REMOTE TEMPERATURE AND HUMIDITY
Remote Sensor / Transmitter LCD display CURRENT REMOTE TEMPERATURE TEMPERATURE TREND PROGRAM NUMBER REMOTE THERMOSTAT CONTROL IS ACTIVE LOW BATTERY INDICATOR REMOTE TEMPERATURE TRANSMISSION ICON OVERRIDE WARMER OR COOLER TEMPERATURE OVERRIDE (+ or - 3 degrees) 17
BUTTON LOCATION THERMOSTAT REMOTE CONTROLLER / SENSOR ON/OFF DOWN Temperature Control + UP 18
INSERT BATTERIES - REMOTE CONTROL / SENSOR _ 2 + Press and hold the button on the top of the unit, then gently but firmly remove the back cover (DO NOT pry open with a screwdriver) 19 + _ Insert 2 “AAA” batteries
** IMPORTANT - (°C or °F) ** CELSIUS DEFAULT: Since Celsius (°C) is the default mode no action is required to use the thermostat in this mode. However, if you wish to choose Fahrenheit (°F) you must do so before you begin using the thermostat. If you proceed to set the clock and program settings with the default Celsius(°C)and THEN change to Fahrenheit (°F); the clock, programs and all system settings will be deleted. To change the temperature scale see the “Optional Settings” section.
Thermostat LCD display Check Pro grams Press PROGRAM at any time to scroll throu gh and che ck all other prog rams l The current prog ram setti ng is displayed in the middle of the LCD screen l Press PROGRAM repeatedly to return to the norm al display Current program period Local/Remote Temperature Program temperature l l The local/r emote temperature is displayed on the bottom of the LCD screen Relati ve Humidity Relative hum idity is displayed on the bottom on the LCD screen l It is sho wn alt erna
Set clock - Press SET to beg in setti ng the time (the TIM E sym bol wil l app ear) - Press AHEAD or BACK to set the current time - Press SET aga in (the DAY sym bol will appear) - Use AHEAD or BACK to set the current day - Press SET aga in to exit Set 12 or 24 hour format 12 hou r mode is the defau lt, so no acti on is required to use the thermostat in this mode To select 12 or 24 hou r format: - Press SET for 3 seco nds to enter the optiona l setting mode - Press UP/DOWN to select 12 or 24 hou r format -
Program Heating and Cooling This thermostat is equipped with 5+1+1 DAY PROGRAMMING. Program Monday-Friday as a group + Saturday + Sunday, with 4 settings per day. This thermostat is pre-programmed for your convenience or you can set your own programs as desired. P1: MORNING : In the morning period, when you wake up, you may prefer a warmer temperature. : The daytime period is an energy-savings mode for the time you are away from home. P2: DAY The settings can be adjusted to minimize energy consumption.
Heating Program 1 Press MODE until the HEAT symbol appears 2 Press PROGRAM once (P1 and the PROGRAM symbol will appear on the display) 3 Press PROGRAM again to scroll through the day(s) you wish to program 4 5 6 7 8 (Monday - Friday mode will display first, then Saturday, then Sunday) Press AHEAD or BACK to scroll to the desired start time for Period 1 (displayed as P1) Press UP or DOWN to set the desired temperature for P1 After setting the desired time and temperature for P1, press PROGRAM again to advan
Cooling Program Setting the cooling program is nearly identical to setting the heating program 1 Press MODE until the COOL symbol appears 2 Press PROGRAM once (P1 and the PROGRAM symbol will appear on the display) 3 Press PROGRAM again to scroll through the day(s) you wish to program 4 5 6 7 8 (Monday - Friday mode will display first, then Saturday, then Sunday) Press AHEAD or BACK to scroll to the desired start time for Period 1 (Displayed as P1) Press UP or DOWN to set the desired temperature for P1 Afte
Humidifier Control 1 2 3 4 Verify the humidifier is correctly wired to the thermostat.
Fan Control / Ventilation For automatic control of the fan, press FAN until the AUTO symbol appears In cooling mode, the fan starts/stops with the cooling equipment In heating mode, the fan is controlled by the heating equipment There may be a few minutes of delay between the fan setting selection and the fan becoming activated l For the fan to run continuously, press FAN until the ON symbol appears l For the Automatic Ventilation feature - where the thermostat will turn the fan on periodically for better v
Temporary OVERRIDE This function will change the temperature temporarily until the next program period starts 1 Press the UP / DOWN buttons to set the desired temperature - The OVERRIDE icon will display, to indicate the OVERRIDE function is active - If the system is in AUTO mode, only the currently active mode (heat or cool) setting will be changed - The thermostat has an automatic delay function to protect the heating and cooling systems from irregular on/off sequences, so there may be a delay of several
Pre-comfort Recovery This thermostat is equipped with a ‘Pre-comfort Recovery’ system that will activate the heating or cooling in advance of the actual set program time, so that the room will be at the desired temperature at the start of the program time l When the thermostat is in ‘recovery’, the OVERRIDE symbol will be flashing l It is normal for the system to be activated earlier than the actual set program time (up to one hour) l The Pre-comfort Recovery can be disabled if desired.
REMOTE SENSOR / TRANSMITTER This thermostat is equipped with a remote sensor, which monitors the temperature in a remote location and can control the thermostat by sending a radio signal.
REMOTE SENSOR / TRANSMITTER SYMBOLS: - REMOTE TEMPERATURE CONTROL - REMOTE TEMPERATURE DISPLAY THE LEARN PROCEDURE The learn procedure initiates a radio signal connection between the transmitter and thermostat To begin: l Bring the remote transmitter near to the thermostat l Press and hold the BACK button on the thermostat for 3 seconds (until the remote temperature display symbol begins to flash on the thermostat’s LCD screen) l Release the BACK button l Press and hold the ON/OFF button on the remote tra
REMOTE SENSOR / TRANSMITTER Viewing the temperature of the remote transmitter: The local and remote temperatures display alternates every 8 seconds on the thermostat LCD screen. To view the remote transmitter temperature, press AHEAD on the thermostat. The temperature will be shown on the bottom pane and the Remote Temperature Display symbol (antenna) will appear indicating the temperature displayed is from the remote transmitter.
OPTIONAL SETTINGS The thermostat has a number of OPTIONS which the user can change. (*NOTE: Adjust these settings before programming the thermostat, because changing certain options will erase all programming) There are 9 OPTIONS. To begin, press SET for 3 seconds to enter the optional settings mode, then press UP or DOWN to select the VALUE. Once the correct value is displayed, press SET again to confirm the setting and to advance to next option.
OPTIONAL SETTINGS 1) 12/24 hour display format - Press and hold SET 3 seconds - The SET OPTION symbol will appear and either 12hr or 24hr will appear - Select your preference of 12hr or 24hr by pressing UP or DOWN - Press SET to confirm the setting and to advance to the next option 2) CR - Cycle Rate setting (select cycle rate to match the heating equipment) - Choose from Cr-0 to Cr-5 by pressing UP or DOWN (See Chart 1) - Press SET to confirm the setting and to advance to the next option Note: The default
OPTIONAL SETTINGS 3) RE- Pre-comfort Recovery ON or OFF - Select the setting by pressing UP or DOWN RE1 = ON (default) RE0 = OFF - Press SET to confirm the setting and to advance to the next option 4) BL - Backlight setting - Select the setting by pressing UP or DOWN BL1 = ON (default) (If the backlight is enabled, pressing any button will turn the backlight on for 8 seconds) BL0 = OFF - Press SET to confirm the setting and to advance to the next option .
OPTIONAL SETTINGS 6) FN - Additional fan control settings for the humidifier - Press SET to advance to the next setting - Select the setting by pressing UP or DOWN - Press SET to confirm the setting and to advance to the next option HE: Use this setting for electric furnaces. With this setting, the thermostat will turn the fan on immediately with the heating system. HG: Use this setting for gas or oil-fired furnaces.
OPTIONAL SETTINGS 8) Default programs This thermostat offers 9 weekly heating / cooling programs built-in for your convenience. The first setting (PG1) is the main factory default which will auto-activate when you first install the thermostat. Note: If you do not wish to change your current program settings, selecting PG0 will maintain the existing program.
OPTIONAL SETTINGS Chart 1. - Default Program Options - Select the setting by pressing UP or DOWN to choose between 9 program selections PG1-PG9 Note: If you do not wish to change your current program settings, selecting PG0 will maintain the existing program.
Changing Batteries When the AA batteries are low and need to be replaced the low battery symbol will appear on the LCD screen and a beep will sound every hour. However, it is recommended that the batteries be replaced every year, even if the battery symbol does not appear.
Memory backup for the Programs and Thermostat Settings In case of power outages, this thermostat has a memory backup powered by a lithium battery. The lithium battery will typically last for several years. Memory storage includes all set programs and thermostat settings. Do not remove the Lithium battery and the AA batteries at the same time, otherwise all memory and settings will be lost.
Specifications: Number of programs: 5+1+1 day programming, with 4 settings per day Temperature setting range: 5 – 35°C (41 – 95°F) Temperature display range: 0 – 55°C (34 – 99.5°F) Humidity setting range: 20 to 70% Humidity display range: 20 to 95% Battery: 3 x “AA” size batteries TROUBLESHOOTING GUIDE PROBLEM SOLUTION LCD screen is blank. - Check if the batteries are installed correctly. - Check if the batteries are fresh and of the correct type. - Select RESET button on the back of the unit.
PROBLEM SOLUTION Heat will not come on but the symbol is animated. 1) Check if the furnace switch and/or pilot flame is turned on, as it may have been turned off. 2) Allow several minutes for the heating system to heat up and the fan to activate. Most heaters will heat up the system for a short while before warm air can be ventilated by the fan. Also check that the HE/HG setting is set correctly. (see optional settings) 3) If the heat still does not come on, check the wiring installation again.
PROBLEM SOLUTION Thermostat is set on AUTO mode, but the thermostat does not seem to automatically change-over from HEAT to COOL or vice-versa. The thermostat has a built-in safeguard time delay of 30 minutes to prevent undesirable change-over sequences from HEAT to COOL or COOL to HEAT. For example, if the thermostat was just running the cooling system, it will take at least 30 minutes before it changes to heating.
FCC Statement The statement required by 15.105 is as follows: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
