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TH109PLUS  
User Guide  
Electronic Thermostat  
NOTE: All cables and connections must conform to the local electri-  
cal code. Special CO/ALR solderless connectors must be used when  
connecting with aluminium conductors.  
Percentageof  
heating time *  
Temperature  
display  
Temperature  
adjustment  
buttons  
2
-wire installation  
*
The thermostat displays the percentage of heating time required to  
maintain the desired temperature. For example, is displayed when  
heating is activated 40 percent of the time.  
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Description  
n
This thermostat can be used to control an electric heating system  
such as a baseboard heater, a radiant ceiling, a radiant floor, a con-  
vector, etc.  
The thermostat cannot be used with the following:  
4
-wire installation  
a resistive load under 2 A  
a resistive load over 12.5 A  
systems driven by a contactor or a relay (inductive load)  
fan-equipped heating systems  
central heating systems  
SUPPLIED PARTS  
One (1) thermostat  
Align and affix the base to the  
electrical box.  
Two (2) 6-32 mounting screws  
Two (2) solderless connectors  
2
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Installation  
o
TURN OFF POWER OF THE HEATING SYSTEM AT THE MAIN  
POWER PANEL TO AVOID ELECTRIC SHOCK.  
Loosen the screw holding the control module to the base. The screw  
cannot be completely removed. Lift the control module to remove it  
from the base.  
Set the switch at the back of the remov-  
able part of the thermostat to °C or °F.  
Replace the front part of the thermostat  
on the base and secure it in place with  
the screw.  
NOTE: Keep the air vents of thermostat  
clean and unobstructed at all times.  
Make the appropriate connections. Please note that the thermostat  
wires are non-polarized; either wire can be connected to either termi-  
nal.  
TH109PLUS  
400-109-003-A  
2/24/06  
1/2  
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7.  
Temperature Display and Setting  
The thermostat normally displays the actual (ambi-  
Warranty  
;
Aube warrants this product, excluding battery, to be free from defects  
in the workmanship or materials, under normal use and service, for a  
period of three (3) year from the date of purchase by the consumer. If  
at any time during the warranty period the product is determined to  
be defective or malfunctions, Aube shall repair or replace it (at Aube's  
option).  
p
ent) temperature.  
To view the setpoint temperature, press once on  
either temperature adjustment button. The icon  
appears during the setpoint display.  
To change the setpoint temperature, press the appropriate but-  
ton until the desired value is displayed.  
If the product is defective,  
(i) return it, with a bill of sale or other dated proof of purchase, to  
the place from which you purchased it, or  
NOTE: The display is backlit for 10 seconds when either button is  
pressed.  
(
ii) contact Aube. Aube will make the determination whether the  
product should be returned, or whether a replacement product  
can be sent to you.  
4
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This warranty does not cover removal or reinstallation costs. This  
warranty shall not apply if it is shown by Aube that the defect or mal-  
function was caused by damage which occurred while the product  
was in the possession of a consumer.  
Power Outage  
During a power outage, the setpoint is saved in memory. You do not  
q
need to adjust the temperature when power returns.  
Aube's sole responsibility shall be to repair or replace the product  
within the terms stated above. AUBE SHALL NOT BE LIABLE FOR  
ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCI-  
DENTAL OR CONSEQUENTIAL DAMAGES RESULTING,  
DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WAR-  
RANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF  
THIS PRODUCT. Some provinces, states or regions do not allow the  
exclusion or limitation of incidental or consequential damages, so this  
limitation may not apply to you.  
5
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Specifications  
Supply: 240 VAC, 50/60 Hz  
r
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Minimum load: 2 A (resistive only)  
5
00 W @ 240 VAC  
Maximum load: 12.5 A (resistive only)  
000 W @ 240 VAC  
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3
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Display range: 0 °C to 50 °C (32 °F to 122 °F)  
Setpoint range: 5 °C to 30 °C (40 °F to 85 °F)  
Storage: -20 °C to 50 °C (-4 °F to 120 °F)  
Approval: c UL us  
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY AUBE  
MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED  
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANT-  
ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS  
HEREBY LIMITED TO THE THREE-YEAR DURATION OF THIS  
WARRANTY. Some provinces, states or regions do not allow limita-  
tions on how long an implied warranty lasts, so the above limitation  
may not apply to you.  
6
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s Troubleshooting  
This warranty gives you specific legal rights, and you may have other  
rights which vary from one province, state or region to another.  
PROBLEM  
SOLUTIONS  
8
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This is normal. Under normal operation, the  
thermostat housing can reach a temperature  
between 35 °C (95 °F) and 40 °C (104 °F).  
Customer assistance  
If you have any questions about the product installation or operation,  
or concerning the warranty, contact us at:  
Thermostat is hot.  
Heater is always  
On.  
The thermostat has not been correctly wired.  
7
05 Montrichard  
Thermostat indi-  
cates that heating is  
On, but the heater  
is not On.  
Saint-Jean-sur-Richelieu, Quebec  
J2X 5K8  
Canada  
The thermostat has not been correctly wired.  
The thermostat is exposed to air draft. Elimi-  
Tel.: (450) 358-4600  
Toll-free: 1-800-831-AUBE  
Fax: (450) 358-4650  
Displayed tempera- nate the draft.  
ture is wrong.  
The sticker on the thermostat’s screen has  
not been removed.  
Email: aube.service@honeywell.com  
The thermal protection device on the heater  
is open. This can happen after a power fail-  
ure or if the heater is obstructed by furniture  
or curtains.  
Display disappears  
and reappears after  
a few minutes.  
For more information on our products, go to  
www.aubetech.com  
Display looks faded The heating system is less than the required  
when heating is  
activated.  
minimum load. This thermostat cannot be  
used below that rating.  
TH109PLUS  
400-109-003-A  
2/24/06  
2/2