Owner’s Guide Before you start Read the entire document CAUTION: • Installation must be carried out by a certified electrician and must comply with national and local electrical codes. • Use this thermostat for resistive loads only. • Do NOT install the thermostat in an area where it can be exposed to water or rain. •...
TH115-AF-GA / TH115-AF-GB About your thermostat The TH115 programmable thermostat has three temperature control modes: A mode: controls the ambient air temperature F mode: controls the floor temperature using an external temperature sensor AF mode: controls the ambient air temperature...
Owner’s Guide Controls On/Off switch TEST light/button for ground fault protection (see page 18) Day button Preset temperature buttons Hour button (see page 13) Minutes button Program button Backlight button Program clear button Temperature adjustment buttons Mode selection / program exit Place at Off to cut power to the heater (e.g., in the summer).
TH115-AF-GA / TH115-AF-GB Display Time Appears when the setpoint temperature is displayed* Temperature* Operation mode icon Preset temperature icon (see page 13) (see pages 16 & 17) Temperature control mode Number of flames varies (see pages 3 & 9) according to heating intensity...
Owner’s Guide Installing the thermostat Faceplate Turn the heating system off at the main electrical panel. Loosen the bottom screw and remove the thermostat faceplate from its wallplate. (The screw cannot be completely removed.) Connect the thermostat to the load and to the power supply (see page 7). Connect the floor sensor (see page 8).
TH115-AF-GA / TH115-AF-GB Wiring diagram NOTE: Connect the wires using the provided solderless connectors for copper wires. Power 120 V Power 240 V supply supply Black Black White Black Black Black Black Black Black White Load Load...
Owner’s Guide Connecting the floor sensor / remote control Insert the floor sensor cable through one of the two openings on the wallplate and connect the sensor wires to terminals 1 and 2 (no polarity). • The sensor cable must not come in contact with the electrical wires and must be routed outside the electrical box and follow the wall down to the floor.
TH115-AF-GA / TH115-AF-GB Set the configuration switches Configuration switches are on the back of the faceplate. Configurations Down Display format °F / 12 h °C / 24 h Enable Disable Early Start Temperature control mode Early Start is used in Automatic mode only. When Early Start is enabled (on), the thermostat determines when to start heating so the Comfort temperature is attained at the beginning of periods 1 and 3.
Owner’s Guide Time and day To set the clock and the day: Press the Hour button to set the hour. Press the Min button to set the minutes. Press the Day button to set the day. Press the Mode/Ret button to return the thermostat to normal display. NOTE: The thermostat will automatically return to normal display if no button is pressed for 60 seconds.
TH115-AF-GA / TH115-AF-GB Daylight Saving Time When the Daylight Saving Time function is enabled (On), the thermostat automatically switches to Daylight Saving Time on the second Sunday of March and to normal time on the first Sunday of November. NOTE: The Daylight Saving Time function is disabled (default setting) when the clock loses its setting.
Owner’s Guide Floor temperature limits (AF mode only) WARNING: To avoid damaging your floor, follow your floor supplier’s recommendations regarding floor tempera- ture limits. The minimum and maximum floor temperature limits are 5.0°C (41°F) and 28.0°C (82°F) by default. To modify these limits, proceed as follows: Switch the thermostat to Off.
TH115-AF-GA / TH115-AF-GB Preset temperatures The thermostat has 3 preset temperatures. Their default settings are shown in the following table. Preset temperature Intended use Icon A/AF modes F mode Comfort When at home 21.0°C (70°F) 28.0°C (82°F) Economy When asleep or away from home 17.0°C (63°F)
Owner’s Guide Default schedule The schedule consists of 4 periods per day, which represents a typical work day. The Comfort ( ) preset temperature is automatically used in Periods 1 and 3 and the Economy ( ) preset temperature in Periods 2 and 4.
TH115-AF-GA / TH115-AF-GB Modifying the schedule Press Pgm. Period 1 for Monday is displayed. To program another period, press Pgm to display that period. To program another day, press Day to display that day (hold for 3 seconds to select the entire week).
Owner’s Guide Running the schedule (Automatic mode) In Automatic mode, the thermostat follows the programmed schedule (see page 14). To place the thermostat in this mode, press Mode/Ret until displayed. Temporary override of schedule If you modify the setpoint temperature (by pressing the button) when the thermostat is in Automatic mode, the new temperature will be used until the beginning of the next period.
TH115-AF-GA / TH115-AF-GB Permanent override of schedule (Manual mode) To place the thermostat in Manual mode, press Mode/Ret to display on the screen. In this mode, the thermostat does not follow the programmed schedule. Press the button to set the temperature.
Owner’s Guide Ground fault protection (GFCI) This ground fault protection thermostat is different from conventional thermostats. In the event of a ground fault, the ground fault protection mechanism on the thermostat will trip and quickly stop the flow of electricity to prevent serious injury. Definition of a ground fault Instead of following its normal safe path, electricity passes through a person’s body to reach the ground.
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TH115-AF-GA / TH115-AF-GB Testing the ground fault protection To ensure the ground fault protection is always in working order, test it once the thermostat is installed and on a monthly basis thereafter. Increase the setpoint temperature above the measured temperature in order TEST button/light to activate the heating system.
Owner’s Guide Error Messages The measured temperature is below the display range. Heating is activated. The measured temperature is above the display range. Heating is deactivated. Verify the thermostat connection and sensor connection.
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