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TH109PLUS
Non-programmable Thermostat
Owner’s
Guide
400-109-005-A 2009-11-30
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Owner’s Guide 400-109-005-A
Table of contents
Overview
About your new thermostat ................................................................................... 1
Controls and display.............................................................................................. 2
Installation
Installation guidelines ............................................................................................ 3
Mounting the thermostat ....................................................................................... 4
Wiring .................................................................................................................... 5
Configuration switches .......................................................................................... 6
Operation
Temperature display and setting ........................................................................... 7
Setup menu........................................................................................................... 8
Appendices
In case of difficulty................................................................................................. 9
Specifications ...................................................................................................... 10
3-year limited warranty .........................................................................................11
Customer assistance........................................................................................... 12
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TH109PLUS
About your new thermostat
This thermostat is designed to control an electric heating system such as a
baseboard heater, a convector or a fan-forced heater.
The thermostat CANNOT be used with:
• a resistive load under 2 A
• a resistive load over 12.5 A
• a system driven by a contactor or a relay (inductive load)
• a central heating system
SUPPLIED PARTS
• One (1) thermostat
• Two (2) 6-32 mounting screws
• Two (2) solderless connectors
Do you need assistance?
We are here to help.
Call 1-800-831-2823.
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Owner’s Guide 400-109-005-A
Controls and display
Appears when the
setpoint is displayed
Heating intensity
indicator (the image
disappears when
heating is off)
The settings are locked
(see page 6)
2
Backlit Screen
Up button
Down button
Temperature
Appears when the
thermostat is configured
for a fan-forced heater
(see page 6)
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TH109PLUS
Installation guidelines
TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN POWER
PANEL TO AVOID ELECTRICAL SHOCK.
The installation must be performed by a qualified electrician and must com-
ply with electrical codes of your region.
Do NOT install the thermostat in an area where it can be exposed to water
or rain.
Avoid locations where there are air drafts (such as the top of a staircase or
an air outlet), dead air spots (such as behind a door), or direct sunlight.
Do not install the thermostat on a wall section that conceals air ducts, chim-
ney pipes or stove pipes.
Install the thermostat about 1.5 m (5 feet) high, on an inside wall facing the
heater.
Install the thermostat onto an electrical box.
This thermostat has tinned copper wires for line and load connections. Spe-
cial CO/ALR solderless connectors must be used if the thermostat will be
connected to aluminium wires.
The thermostat wires are not polarized; either wire can be connected to the
load or to the power supply.
Keep the air vents at the top and bottom of the thermostat clean and free
from obstructions.
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Owner’s Guide 400-109-005-A
Mounting the thermostat
n Loosen the screw underneath the thermostat and
separate the faceplate from the wallplate.
NOTE: The screw remains captive and cannot be
completely removed.
o Wire the thermostat (see page 5).
p Mount the wallplate to the electrical box using the
provided screws. Insert the screws through the two
left or right mounting holes of the wallplate.
q Set the configuration switches (see page 6)
r Reinstall the faceplate onto the wallplate and tighten
the screw.
NOTE: If there is a protective film or sticker on the
thermostat’s screen, peel it off.
s Apply power to the heating system. Verify the
installation by checking that the heating system can
be turned On by raising the setpoint using the Up
button or turned Off by lowering the setpoint using
the Down button.
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TH109PLUS
Wiring
Connect the thermostat wires to the heating system (load) and
to the power supply.
2-wire Installation
4-wire Installation
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Owner’s Guide 400-109-005-A
Configuration switches
Configuration switches are on the back
of the faceplate. Factory settings are
inside gray cells.
# Parameter Up Down
1
Settings lock
2
Fan-forced heater
1
2
Lock Unlock
Fan Yes No
3Unit °F
1
The thermostat buttons are disabled and appears on the screen (see page
2) when the settings are locked.
2
Place at Fan Yes if you have a fan-forced heater (to prevent premature burnout of the motor). Leave at No for better temperature regulation if you do not
°C
have a fan-forced heater.
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TH109PLUS
Temperature display and setting
The thermostat generally displays the room temperature.
• To display the set temperature (setpoint), press the Up or
Down button once. The setpoint temperature will remain on
the screen for 5 seconds.
• To change the setpoint temperature, press the Up or Down
button repeatedly until the desired temperature is displayed.
• The screen is backlit for 10 seconds when any button is
pressed.
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Owner’s Guide 400-109-005-A
Setup menu
n Press the Up and Down buttons simultaneously for three seconds to enter
the setup menu.
o Press the Up or Down button to change the option.
p Press the Up and Down buttons simultaneously and briefly to advance to
the next parameter.
q When the last parameter is displayed, press the Up and Down buttons for
three seconds to save any changes and exit the menu.
NOTE:
If you do not press any button for 15 seconds,
cally save any changes you have made and will then
Parameter Options
Minimum
setpoint
Maximum
setpoint
NOTE: The minimum setpoint cannot be set higher than the
value set for the maximum setpoint.
NOTE: The maximum setpoint cannot be set lower than the
value set for the minimum setpoint.
5°C - 30°C (41°F - 86°F)
5°C - 30°C (41°F - 86°F)
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the thermostat will automati-
return to its normal display
Display and
default setting
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In case of difficulty
PROBLEM SOLUTIONS
TH109PLUS
Thermostat is hot.
Wrong temperature is
displayed.
Display disappears and
reappears after a few
minutes.
Display looks faded
when heating is activated.
This is normal unless the thermostat is too hot
to touch. Ensure that the heater capacity does
not exceed the thermostat’s maximum load.
Avoid any of the following conditions:
• The thermostat is exposed to an air draft.
• The thermostat is located near or above a
heat source such as a light dimmer.
The thermal circuit breaker on the heater has
temporarily opened. This can happen if the
heater is obstructed by furniture or curtain and
has overheated, or if the thermal circuit
breaker is defective or too sensitive.
The heater capacity is probably less than the
thermostat minimum load requirement. The
thermostat cannot be used below that rating.
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Owner’s Guide 400-109-005-A
Specifications
Supply: 240 VAC, 60 Hz
Minimum load: 2 A (resistive only)
500 W @ 240 VAC
Maximum load: 12.5 A (resistive only)
3000 W @ 240 VAC
Display range: 0°C to 50.0°C (32°F to 122°F)
Setpoint range: 5.0°C to 30.0°C (41°F to 86°F)
Resolution: 0.5°C (1°F)
Operating temperature: 0°C to 50.0°C (32°F to 122°F)
Storage temperature: -20.0°C to 50.0°C (-4°F to 122°F)
Permanent memory: You do not need to adjust the tempera-
ture or thermostat configurations following a power outage.
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TH109PLUS
3-year limited warranty
Honeywell 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) years 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, Honeywell shall repair or replace it (at Honeywell's option).
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
(ii) contact Honeywell. Honeywell will make the determination whether the product should
be returned, or whether a replacement product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is
shown by Honeywell that the defect or malfunction was caused by damage which occurred
while the product was in the possession of a consumer.
Honeywell's sole responsibility shall be to repair or replace the product within the terms stated
above. HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND,
INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY
OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, 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.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS
PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY 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 limitations on how long an implied warranty lasts, so the above limitation
may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from one
province, state or region to another.
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Owner’s Guide 400-109-005-A
Customer Assistance
If you have any questions about the product installation or use,
contact us at:
705 Montrichard Avenue
Saint-Jean-sur-Richelieu, Quebec
J2X 5K8
Canada
1-800-831-2823
Email: aube.service@honeywell.com
For more information on our products, go to
www.aubetech.com
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