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Owner’s Guide  
Guide du propriétaire  
Guía para el usuario  
TH115-AF-GA / TH115-AF-GB  
Programmable thermostat  
Thermostat programmable  
Termostato programable  
400-115-051-B  
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Nous sommes là. Composez le 1 800 831-2823.  
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Estamos aquí para ayudarlo. Llame al 1 800 831-2823.  
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TH115-AF-GA / TH115-AF-GB  
Table of contents  
Overview  
Before you start..................................................2  
About your thermostat........................................3  
Controls..............................................................4  
Display ...............................................................5  
Default schedule ..............................................14  
Modifying the schedule ....................................15  
Operation  
Running the schedule (Automatic mode).........16  
Temporary override of schedule.......................16  
Permanent override (Manual mode) ...............17  
Before going on vacation (Vacation mode) ......17  
Ground fault protection (GFCI).........................18  
Installation  
Installing the thermostat .....................................6  
Wiring diagrams .................................................7  
Connecting the floor sensor / remote control .....8  
Setting the configuration switches......................9  
Appendices  
Setup  
Error messages................................................20  
Technical specifications....................................21  
Customer assistance........................................22  
Warranty...........................................................23  
Time and day....................................................10  
Daylight Saving Time .......................................11  
Floor temperature limits....................................12  
Preset temperatures.........................................13  
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Owner’s Guide  
Before you start  
CAUTION:  
Read the entire document  
•
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.  
To prevent severe shock or electrocution, always turn the power Off at the service panel  
before working with wiring.  
•
•
•
Install the thermostat onto an electrical box.  
Use special CO/ALR solderless connectors if you connect the thermostat to aluminum wires.  
Keep the thermostat's top and bottom air vents (openings) clean and unobstructed at all  
times.  
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TH115-AF-GA / TH115-AF-GB  
About your thermostat  
The TH115 programmable thermostat has three temperature control modes:  
A mode:  
F mode:  
AF mode:  
ꢀ
ꢀ
controls the ambient air temperature  
controls the floor temperature using an external temperature sensor  
ꢀ
ꢀ
controls the ambient air temperature  
maintains the floor temperature within desired limits using an external temperature  
sensor  
See page 9 on how to change the temperature control mode setting.  
Supplied Parts  
•
•
•
•
•
One (1) thermostat  
Two (2) mounting screws  
Four (4) solderless connectors for copper wires  
One (1) floor sensor  
One (1) flat-tip screwdriver  
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Owner’s Guide  
Controls  
On/Off switch*  
TEST light/button for ground  
fault protection (see page 18)  
Day button  
Hour button  
Minutes button  
Preset temperature buttons  
(
see page 13)  
Program button  
Program clear button  
Backlight button**  
Temperature adjustment buttons**  
Mode selection / program exit  
*
Place at Off to cut power to the heater (e.g., in the summer). This will not affect the time and temperature settings.  
**  
When the backlight button or either of the  
buttons is pressed, the display illuminates for 12 seconds.  
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TH115-AF-GA / TH115-AF-GB  
Display  
Time  
Day  
Appears when the setpoint  
temperature is displayed*  
Temperature*  
Operation mode icon  
Preset temperature icon (see page 13)  
Temperature control mode  
(
see pages 16 & 17)  
Number of flames varies  
according to heating intensity  
(
see pages 3 & 9)  
Ground fault indicator (see page 18)  
Period (see page 14)  
*
The thermostat normally displays the actual (measured) temperature. To view the setpoint temperature, briefly press  
either of the buttons. The setpoint will appear for 5 seconds. To change the setpoint temperature, press one of the  
buttons until the desired temperature is displayed. To scroll faster, press and hold the button.  
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Owner’s Guide  
Installing the thermostat  
Faceplate  
n
o
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.)  
p
q
r
s
t
u
v
w
Connect the thermostat to the load and to the power supply (see page 7).  
Connect the floor sensor (see page 8).  
If you wish to connect a remote control device, see page 8.  
Install the wallplate to the electrical box using the provided screws.  
Set the configuration switches on the back of the faceplate (see page 9).  
Install the faceplate back on the wall plate and tighten the screw.  
Apply power to the heating system.  
Wallplate  
Test the ground fault protection (see page 19).  
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TH115-AF-GA / TH115-AF-GB  
Wiring diagram  
NOTE: Connect the wires using the provided solderless connectors for copper wires.  
Power  
Power  
supply  
supply 120 V  
240 V  
Black  
Red  
Black  
Red  
Red  
White  
Black  
Black  
Black  
Black  
Black  
Black  
Red  
White  
Red  
Load  
Load  
Red  
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Owner’s Guide  
Connecting the floor sensor / remote control  
n
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.  
•
Position the sensor cable such that it does not  
come in contact with the floor heating wires. The  
sensor must be centered between two floor heating  
wires for best temperature control.  
•
Do NOT staple the sensor head (the plastic end) to  
the floor. Doing so might damage the sensor. Any  
damage might not be noticeable during testing but  
can become apparent several days later.  
Floor  
temperature  
sensor  
o
If you wish to connect a remote control device (see  
page 17), insert the wires (use 18- to 22-gauge flexible  
wires) through one of the two openings on the wallplate  
and connect them to terminals 2 and 3 (no polarity).  
Remote control device  
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TH115-AF-GA / TH115-AF-GB  
Set the configuration switches  
Configuration switches are on the back of the faceplate.  
#
Configurations  
Display format  
Up  
Down  
1
2
°F / 12 h  
Enable  
°C / 24 h  
Disable  
Early Start1  
Temperature control mode2  
3
F
AF  
1.  
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. When Early Start is disabled (off),  
heating starts only at the beginning of periods 1 and 3; thus there is a delay before the Comfort temperature is  
reached.  
2.  
See page 3. To select the F Mode, place the switch in the F position. To select the AF Mode, place the switch in the AF  
position and ensure that the temperature sensor is connected to the thermostat. To select the A Mode, place the switch in  
the AF position and ensure that the remote temperature sensor is NOT connected to the thermostat.  
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Owner’s Guide  
Time and day  
To set the clock and the day:  
n Press the Hour button to set the hour.  
o Press the Min button to set the minutes.  
p Press the Day button to set the day.  
q 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.  
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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.  
To set the Daylight Saving Time function and to set the date:  
n
o
p
q
r
s
t
u
v
Press the Day button (3 seconds) until DLS appears on the screen.  
Press either of the  
buttons to toggle between On (enabled) and Off (disabled).  
Press the Day button briefly. The year setting is displayed.  
Press either of the  
Press the Day button briefly. The month setting is displayed.  
Press either of the buttons to set the current month.  
Press the Day button briefly. The date setting is displayed.  
Press either of the buttons to set the current date.  
Press the Mode/Ret button to return the thermostat to normal display.  
buttons to set the current year.  
NOTE: The thermostat will automatically return to normal display if no button is pressed for 60 seconds.  
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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:  
n
o
p
q
r
s
t
u
Switch the thermostat to Off.  
Press and hold the  
button.  
Switch the thermostat back to On.  
Release the  
button when the minimum temperature limit (FL:LO) appears.  
Set the minimum temperature limit using the  
buttons.  
Press the  
Set the maximum temperature limit using the  
Press Mode/Ret to return the thermostat to normal display.  
button to display the maximum temperature limit (FL:HI).  
buttons.  
NOTE: The thermostat will automatically return to normal display if no button is pressed for 60 seconds.  
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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  
Vacation  
When asleep or away from home  
During prolonged absence  
17.0°C (63°F)  
10.0°C (50°F)  
20.0°C (68°F)  
10.0°C (50°F)  
To use a preset temperature:  
Briefly press the appropriate preset temperature button (  
become the current setpoint and its icon will appear on the screen.  
,
or  
). The preset temperature will  
Press one of the buttons to display the desired temperature.  
Press and hold the appropriate preset temperature button ( or ) until its icon is displayed.  
To modify a preset temperature:  
n
o
,
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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. You can program the thermostat to skip (cancel) the periods that do not apply to your situation. For  
example, you can skip periods 2 and 3 for the weekend.  
NOTE: If you wish to use only 2 periods, use the following combinations: “1 and 4” or “2 and 3”. Early Start  
(
see page 9) will not work with any other combinations.  
You can have a different program every day; i.e., each period can start at a different time every day. The  
thermostat has been programmed with the following schedule.  
Period  
Description  
Wake  
Setting  
MO  
6:00  
8:30  
17:00  
TU  
6:00  
8:30  
17:00  
WE  
6:00  
8:30  
17:00  
TH  
6:00  
8:30  
17:00  
FR  
6:00  
8:30  
17:00  
SA  
6:00  
--:--  
--:--  
SU  
6:00  
--:--  
--:--  
Comfort  
Economy  
Comfort  
Economy  
Leave  
Return  
Sleep  
23:00  
23:00  
23:00  
23:00  
23:00  
23:00  
23:00  
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TH115-AF-GA / TH115-AF-GB  
Modifying the schedule  
n Press Pgm. Period 1 for Monday is displayed.  
o To program another period, press Pgm to display that period.  
p To program another day, press Day to display that day (hold for 3 seconds to  
select the entire week).  
q Press Hour and Min to set the period start time, or press Clear to skip  
(cancel) the period (--:-- will be displayed).  
r Repeat steps 2 to 4 to program another period.  
s Press Mode/Ret to return the thermostat to normal display.  
NOTE: The thermostat will automatically return to normal display if no button is  
pressed for 60 seconds.  
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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  
is  
displayed.  
Temporary override of schedule  
If you modify the setpoint temperature (by pressing the  
the thermostat is in Automatic mode, the new temperature will be used until the  
beginning of the next period. flashes during the temporary override. You can  
cancel the temporary override by pressing Mode/Ret.  
,
or button) when  
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TH115-AF-GA / TH115-AF-GB  
Permanent override of schedule (Manual mode)  
To place the thermostat in Manual mode, press Mode/Ret to display  
thermostat does not follow the programmed schedule. Press the  
temperature.  
on the screen. In this mode, the  
,
or  
button to set the  
When you go on vacation (Vacation mode)  
In this mode, the thermostat uses the vacation preset temperature (see page 13). There are two ways to  
place the thermostat in Vacation mode:  
ꢀ
Press the  
button on the thermostat. When the Vacation mode is activated this way, the  
icon  
appears on the screen without flashing.  
ꢀ
From any remote control device equipped with a dry contact. When the contact closes, the thermo-  
stat is placed in Vacation mode and the icon flashes on the screen. All buttons on the thermostat  
are locked. When the contact opens, the thermostat returns to the previous mode.  
NOTE: When the Vacation mode is activated from a remote control device, it can only be deacti-  
vated using the device.  
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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.  
For example, a defective floor heating mat can cause a ground fault.  
A ground fault protection thermostat does not protect against circuit overloads, short circuits, or  
electrical shocks. For example, you can still receive an electrical shock if you touch bare wires while  
standing on a non-conducting surface such as a wood floor.  
Ground fault protection reset  
When the ground fault protection mechanism trips, the TEST light is On (red). To reset the ground fault  
protection, switch the thermostat to Off and back to On. The TEST light will turn off.  
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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.  
n
o
Increase the setpoint temperature above the measured temperature in order  
to activate the heating system.  
TEST button/light  
Press the TEST button.  
•
If the TEST light does NOT turn on, the test has failed. Cut power to the  
heating system at the main electrical panel, have an electrician verify the  
installation and, if necessary, replace the thermostat.  
•
If the TEST light turns on, continue the test.  
p
Switch the thermostat to Off then back to On.  
•
If the TEST light turns off, the test has passed. Set the thermostat back to the desired tempera-  
ture. The test is now completed.  
•
If the TEST light remains on, the test has failed. Continue with the rest of the procedure.  
q
r
Switch the circuit breaker (at the service panel) of the heating system to off then back to on.  
Repeat the test. If the test fails again, cut power to the heating system at the main electrical panel,  
have an electrician verify the installation and, if necessary, replace the thermostat.  
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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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TH115-AF-GA / TH115-AF-GB  
Technical Specifications  
Max. load (resistive only)  
Ground Fault  
Model  
Supply  
Protection  
Wiring  
Current  
Power  
(
GFCI)  
1
2
1
2
20 VAC, 60 Hz  
40 VAC, 60 Hz  
20 VAC, 60 Hz  
40 VAC, 60 Hz  
1800 W  
3600 W  
1800 W  
3600 W  
TH115-AF-GA  
TH115-AF-GB  
5 mA  
4 wires,  
double pole  
1
5 A  
15 mA  
Display range: 0°C to 70.0°C (32°F to 158°F)  
Ambient setpoint range (A/AF modes): 5.0°C to 30.0°C (40°F - 86°F)  
Floor setpoint range (F mode): 5.0°C to 40.0°C (40°F - 104°F)  
Floor limit range (AF mode)