uniwatt UT202NP User manual

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INS-UT202NP-0919
UT202NP
WWW.UNIWATT.CA
CONT[email protected]
1-844-STELPRO
UNIWATT is a line of products manufactured by Stelpro.For more information
please contact customer service.
UT202NP SERIES
OWNER'S MANUAL
NON PROGRAMMABLE
ELECTRONIC THERMOSTAT
THANK YOU FOR YOUR PURCHASE!
QUESTION? PROBLEM? CONTACT STELPRO CUSTOMER SERVICE.

2
Before installing and operating this product, the owner
and/or installer must read, understand and follow these
instructions and keep them handy for future reference. If
these instructions are not followed, the warranty will be
considered null and void and the manufacturer deems
no further responsibility for this product. Moreover, the
following instructions must be adhered to in order to avoid
personal injuries or property damages, serious injuries and po-
tentially fatal electric shocks. All electric connections must be made
by a qualied electrician, according to the electric and building codes effec-
tive in your region. Do NOT connect this product to a supply source other than
120 VAC to 240 VAC, and do not exceed the load limits specied. Protect
the heating system with the appropriate circuit breaker or fuse. You must
regularly clean dirt accumulations on the thermostat. Do NOT use uid to
clean thermostat air vent. Do not install thermostat in a wet place. However,
installing it in isolated walls is allowed.
Note: When a part of the product specication must be changed to improve operability or
other functions, priority is given to the product specication itself. In such instances, the
instruction manual may not entirely match all the functions of the actual product. Therefore,
the actual product and packaging, as well as the name and illustration, may differ from the
manual. The screen/LCD display shown as an example in this manual may be different from
the actual screen/LCD display.
WARNING

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The UT202NP electronic thermostat can be used to control electric baseboards
or convectors. It keeps the temperature of a room at the requested set point with
a high degree of accuracy. This product is designed for installations with electrical
current - with a resistive load - ranging from 1.25 A to 8.3 A (120-240 VAC). It pos-
sesses a user-friendly interface. Furthermore, it gives you the possibility to control
the temperature of a room with great precision.
THIS THERMOSTAT IS NOT COMPATIBLE WITH THE FOLLOWING IN-
STALLATIONS:
• electrical current higher than 8.3 A with a resistive load (2000 W @ 240 VAC
and 1000 W @ 120 VAC);
• electrical current lower than 1.25 A with a resistive load (300 W @ 240 VAC and
150 W @ 120 VAC);
• fan heaters;
• central heating system.
PARTS SUPPLIED:
• one (1) thermostat with a door on the front;
• two (2) mounting screws;
• two (2) twist-on wire connectors suitable for copper wires.
DESCRIPTION

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SELECTION OF THE THERMOSTAT LOCATION
The thermostat must be mounted to a connection box on a wall facing the heating
unit, at around 1.5 m (5 feet) above the floor level, on a section of the wall exempt
from pipes or air ducts.
Do not install the thermostat in a location where temperature measurements
could be altered. For example:
• close to a window, on an external wall, or close to a door leading outside;
• exposed directly to the light or heat of the sun, a lamp, a fireplace or any other
heat source;
• close or in front of an air outlet;
• close to concealed ducts or a chimney; and
• in a location with poor air flow (e.g. behind a door), or with frequent air drafts
(e.g. head of stairs).
THERMOSTAT MOUNTING AND CONNECTION
1. Cut off power supply on lead wires at the electrical panel in order to
avoid any risk of electric shock.
2. Ensure that the air vents of the thermostat are clean and clear of any obstruc-
tion.
INSTALLATION

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3. Make the electrical connections using the supplied twist-on wire connectors.
When making the connection with aluminum wire, make sure that you are using
connectors identified CO/ALR. Please note that the thermostat wires do not
have polarity. Therefore, the way they are connected is not important.
2-WIRE INSTALLATION
4-WIRE INSTALLATION

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4. Open the door with your hand or by using a flat screw driver.
a. With hand: open by freeing the door at the top right corner of the thermostat.
b. Using a flat screw driver: insert the screw driver in the side slot at the top right
corner of the thermostat and turn delicately until the door is freed.
5. Place all the wires inside the electrical box.
6. Fix the thermostat to the electrical box using the two screws provided.
7. Close the thermostat door.
8. Turn on the power.

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TEMPERATURE SET POINTS
The figures displayed above the pictogram indicate the temperature set point. It can
be displayed in degrees Celsius or Fahrenheit (see “Display in degrees Celsius/
Fahrenheit”).
To adjust the set point, just press down the top button to increase the value, or the
bottom button to decrease it. Set points can be adjusted by increments of 0.5°C
(1°F). To quickly scroll through the set point values, press and hold down the button.
The minimum set point is 3°C (37°F), and the maximum set point is 30°C (86°F).
When you press a button the current set point is shown and the flashes. You
can turn off the thermostat by lowering the set point below 3°C (37°F). The set point
value displayed will be --.-, and heating system start up will be impossible.
OPERATION
Pictograms
Bottom button
Top button
Security mode
Ambient temperature/
Set point
Heating power
indicator
Frost-free warning
Comfort mode

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DISPLAY IN EITHER DEGREES CELSIUS/FAHRENHEIT
The thermostat can display the ambient temperature and the set point in degrees
Celsius (standard factory setting) or Fahrenheit.
1. To switch from degrees Celsius to degrees Fahrenheit and vice versa, simulta-
neously press down the two buttons for 3 seconds. Once the three seconds are
over the °C or °F symbol will flash. Release the buttons.
2. Press down the top button to switch from the degrees Celsius to the degrees
Fahrenheit, and conversely. The degree Celsius or Fahrenheit symbol will be
displayed.
3. When the adjustment is completed, release the buttons and wait for 5 seconds
to exit the adjustment function.
HEATING POWER INDICATOR
The level of power used to maintain the temperature at the set point is expressed
as a percentage indicated by the number of bars in the thermometer displayed. The
heating power used is displayed as follows:
4 bars = 75% to 100%
3 bars = 50% to 75%
2 bars = 25% to 50%
1 bar = 1% to 25%
0 bar = no heat
FROST-FREE WARNING
The Snowflake icon is displayed when the temperature set point is between 3°C
(37°F) and 5°C (41°F). A minimum temperature will be maintained to ensure frost
control.

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SECURITY MODE
It is possible to impose a maximum temperature set point by activating this mode.
Then, it becomes impossible to exceed this set point, regardless of the current
mode (Day/Night). However, it is still possible to lower the set point at your dis-
cretion.
PROCEDURES TO ACTIVATE THE SECURITY MODE
1. To activate the Security option, adjust the set point to the desired maximum tem-
perature.
2. Simultaneously press down the two buttons for more than 13 seconds, until the
icon appears (note that the °C or °F symbol will blink after 3 seconds, but
continue to keep both buttons pressed down).
3. Release the buttons. The thermostat is now locked.
PROCEDURES TO DEACTIVATE THE SECURITY MODE
1. To deactivate the Security mode, start by cutting off the thermostat power at circuit
breaker and wait at least 20 seconds.
2. Turn the thermostat power back on and the icon will blink for a maximum of
5 minutes.
3. Simultaneously press down both buttons for 13 seconds. After 13 seconds, the
icon will disappear and the degrees symbol (°C or °F) will stop blinking, indicating
that the Security mode is deactivated. Release the buttons.
PARAMETERS SAVING AND POWER FAILURES
The thermostat saves some parameters in a non-volatile memory to be able to
recover them after being shut off (a power failure, for example). These parameters
are the set point, the state of the Security mode, the maximum symbol of the
Security mode and the Celsius/Fahrenheit symbol. These parameters are saved
every minute if any changes are made.
The Security mode is reactivated if it was previously activated. However, the icon
will blink for 5 minutes, during which it is possible to deactivate the Security mode
by pressing down both buttons simultaneously for 13 seconds. If this is not done,
the Security mode will remain activated and the icon will stop blinking.

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PROBLEM DEFECTIVE PART OR PART TO CHECK
The thermostat is hot.
• In normal operating conditions, the thermostat
housing may become hot to the touch. That is normal
and will not affect the effective operation of the thermostat.
Heating is always on. • Check if the thermostat is properly connected.
Refer to the installation section.
Heating does not run even
if the thermostat indicates
it is on.
• Check if the thermostat is properly connected.
Refer to the installation section.
The display does not turn on.
• Check if the thermostat is properly connected.
Refer to the installation section.
• Check the power supply at the electrical panel.
• Check if the heating unit has a switch. If so, ensure
that this switch is turned on.
The display turns off a few
minutes and then turns on
again.
• The thermal protection of the heating unit has opened due
to overheating. Check if the heating unit is in good condi-
tion of operation and that clearance around the appliance is
according to the manufacturer’s specifications.
The display has low contrast
when heating is on.
• The load is lower than the minimum load. Install a heating
unit that is within the load limits of the thermostat.
The displayed ambient
temperature is incorrect.
• Check the presence of an air stream or a heat source near
the thermostat, and correct the situation.
The display indicates E1,
E2 or E4. • Faulty thermal sensor. Contact the customer service.
The display indicates E3
• Defective part or needs verification.
• Potential overheating of the thermostat. Check if the
installed load respects the maximum load. If that is the
case, contact customer service.
Weak luminosity of the
display.
• Possibility of a bad contact. Check thermostat wirings.
Refer to the installation section.
N.B. If you are unable to solve the problem after having veried these points, please communicate
with our customer service. Consult www.stelpro.com for the phone numbers.
TROUBLESHOOTING

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TECHNICAL SPECIFICATIONS
Load control type Resistive
Frequency 60 Hz
Storage temperature -40 °C to 50 °C (-40 °F to 122 °F)
Operating temperature -20 °C to 50 °C (-4 °F to 122 °F).
LC display less effective below 0°C (32 °F)
Humidity 5 % to 98 % without condensation
Action Type 1.Y
Pollution degree 2
Software Class A
Rated impulse voltage Category II (1500 V)
Independently mounted control for surface mounting
Thermistor used as a sensor, carries no load current
Overload protection device external to the control: circuit breaker
(refer to local electrical code)
VOLTAGE AND LOAD
PRODUCT CODE SUPPLY VOLTAGE LOAD AT 120 V LOAD AT 240 V
VOLTS WATTS WATTS
UT202NP 120-240 150-1000 300-2000

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STELPRO DESIGN INC. | Saint-Bruno-de-Montarville | Québec | J3V 6L7
This unit has a 2-year warranty. If at any time during this period the unit
becomes defective, it must be returned to its place of purchase with the
invoice copy, or simply contact our customer service department (with an
invoice copy in hand). In order for the warranty to be valid, the unit
must have been installed and used according to instructions. If the
installer or the user modies the unit, he will be held responsible for any
damage resulting from this modication. The warranty is limited to the
factory repair or the replacement of the unit, and does not cover the cost of
disconnection, transport, and installation.
LIMITED WARRANTY