Stelpro STE302PA User manual
INSSTE302P0514
For further information or to consult this guide online, please visit our website at www.stelpro.com
USER’S GUIDE
STE302P
MULTIPLE PROGRAMMING ELECTRONIC THERMOSTAT
Energy Veried
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INSSTE302P0514
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WARNING
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 potentially fatal electric shocks. All electric connections must be made by a qualied
electrician, according to the electric and building codes effective in your region. Do NOT
connect this product to a supply source other than 120 VAC or 240 VAC, and do not exceed the load
limits specied. 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 specification must be changed to improve operability or other functions,
priority is given to the product specification 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.
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The multiple programming electronic thermostat STE302P can be used to control electric heating units
such as electric baseboards, convectors, or aeroconvectors. 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 12.5 A (120/240 VAC). It possesses 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 installations:
• electrical current higher than 12.5 A with a resistive load
(3000 W @ 240 VAC and 1500 W @ 120 VAC);
• electrical current lower than 1.25 A with a resistive load
(300 W @ 240 VAC and 150 W @ 120 VAC); and
• central heating system.
Parts supplied:
• one (1) thermostat;
• wall mounting plate located at the back of the thermostat;
• two (2) mounting screws;
• two (2) solderless connectors suitable for copper wires.
DESCRIPTION
INSTALLATION
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 oor 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 replace 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 ow (e.g. behind a door), or with frequent air drafts (e.g. head of stairs).
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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 obstruction.
3. Using a screwdriver, loosen the screw retaining the mounting base of the thermostat until it is loose
(do not completely remove the screw).
Then, remove the mounting base at the back of the thermostat by pushing it downwards and then
towards you.
4. Align and secure the mounting base to the connection box using the two screws supplied.
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5. Pass the wires from the wall through the opening on the mounting base and connect them using the
supplied solderless connectors. When making the connection with aluminum wire, make sure that you
are using connectors identied CO/AL. 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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6. Place all the wires into the connection box.
7. Align the little slots located on the top of the thermostat with those on the mounting base and secure
the thermostat to the mounting base. Note that you can also position the thermostat on the left or the
right side of the junction box. Then, tighten the screw at the bottom of the unit.
8. Turn on the power.
9. Set the thermostat to the desired setting (see the following section).
Alignment
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The multiple programming thermostat has three main operating modes: Manual ( ), Automatic (
) and Preprogrammed ( ). The active mode is displayed at the bottom of the screen.
The transition from one mode to another is done by pressing down the button, out of any
adjustment mode.
Note: it is impossible to change the operation mode when the Security mode is activated.
When rst powered up, the thermostat is initially in degrees Celsius, in Preprogrammed mode
(preprogramming 5), and the Anticipated start mode is activated. The clock is adjusted to Saturday (12:00)
and ashes to indicate that an adjustment is necessary. The preprogramming is effective immediately.
OPERATION
Ambient temperature
Heating power
indicator
Security mode
Fan mode
+ button (to increase)
Mode (Manual;
Automatic;
Preprogrammed
Programming period
Anticipated start
Hour
Frost-free warning
- button (to decrease)
Mode button
Clock button
Days (L/M : Monday,
M/T : Tuesday,
M/W : Wednesday,
J/T : Thursday,
V/F : Friday,
S/S : Saturday and
D/S : Sunday)
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Adjustment of the hour and the day
To adjust the hour and the day:
1. In any mode (Manual, Automatic or Prepro grammed), out of any adjustment mode, press down the
button and release it.
2. The current time mode (24H/12H) is displayed. Press down the or button to select the desired
format. Press down the button to conrm your choice.
3. The two hour digits ash. Adjust the hours using the and buttons. Press down the button
to conrm your choice.
4. The two minute digits ash. Adjust the minutes using the and buttons. Press down the
button to conrm your choice.
5. The day of the week ashes. Adjust using the and buttons. Press down the button to
conrm your choice.
The adjustment is thus completed and the thermostat returns to normal operation.
It is possible to exit the hour and day adjustment mode at any time:
• By pressing down the button.
• By not pressing down any buttons during 1 minute.
In case of a power failure lasting less than 2 hours, the thermostat saves the adjustment of the hour and
the day of the week. When the power is restored after an extensive failure, the hour will blink, indicating
that it must be readjusted.
Ambient temperature
The gures displayed above the hour indicate the ambient temperature. It can be displayed in degrees
Celsius or Fahrenheit (see “Display in degrees Celsius/Fahrenheit”).
To adjust the set point, out of any adjustment mode, press down the button to increase the set point (it
will blink), or the button to decrease it. Set points can only 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).
To return to the ambient temperature, do not press down any buttons for 3 seconds or press down both
and buttons simultaneously. 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.
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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. In any mode (Manual, Automatic or Preprogrammed), out of any adjustment mode, press down the
button for 3 seconds and release it. The various icons and options appear and °C or °F icon
ashes.
2. Press down the button to conrm your choice.
3. Press down the or button to switch from degrees Celsius to Fahrenheit. Press down the
button to conrm your choice.
The adjustment is thus completed and the thermostat returns to normal operation.
It is possible to exit the degrees Celsius/Fahrenheit adjustment mode at any time:
• By pressing down the button.
• By not pressing down any buttons during 1 minute.
In any case, the adjustment is saved.
Manual mode ( )
From the Manual mode, you can manually adjust the thermostat set point by pressing down the or
button to increase the value, or to decrease it. To quickly scroll through the set point values, press and
hold down the button. The standard factory set point adjustment is 21°C. From this mode, the screen
displays the temperature, the heating power used, the hour and the day of the week.
Automatic mode ( )
From the Automatic mode, the thermostat adjusts the set points according to the programmed periods.
If no data was entered, the thermostat acts the same way as from the Manual mode and the standard
factory set point adjustment is 21°C. It is always possible to manually adjust the set point using the
or button. The selected set point will be effective until one period is programmed, which represents
an hour and a day of the week. Note that if the set point is lowered to off (--.-), the programming will
not be effective. It is possible to program 4 periods a day during the week and 4 periods a day during
the weekend, which means that the set point can change automatically up to 4 times a day. The period
order is not important.
From this mode, the screen displays the temperature, the heating power used, the hour, the day of the
week and the current programmed period number ( to ; displayed on the right-hand side of the
hour).
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Programming procedure of the Automatic mode
Programming the Automatic mode can be done in the Automatic mode or the Manual mode.
1. Out of any adjustment mode, press down the button during 3 seconds and release it. It then enters
into the programming of period 1 of the 5 days of the week. The 5 days of the week (L/M, M/T, M/W,
J/T, V/F), the period 1 ( ) and the associated programming (hours and set point) are displayed.
Note that the time displays --:-- and the set point displays --.-- if there is no programming for the period.
Note: if no programming is required for the period, simply press down the button. It then
automatically switches to the next adjustment period.
2. The two hour digits of the period ash and can then be adjusted with the and buttons. Conrm
the adjustment using the button.
3. The two minute digits of the period ash. Use the and buttons to adjust by intervals of 15
minutes. Conrm the adjustment by pressing down the button.
4. The set point temperature of the period is ashing. Adjust the set point using the and buttons.
Conrm your selection by pressing down the button.
5. The programming of this period is over. The programming of the next period is displayed and you
return to step 2.
6. At the end of the programming of the 4 periods of the week days, you enter into the programming
period 1 of the two days of the weekend. The two days of the weekend (S/S, D/S), the period 1 and
the associated programming (hours and set point) are displayed. The programming of the weekend
periods is made in the same manner as for the periods of the week days (steps 2 to 5).
At the end of the programming period 4 of the weekend, the programming is completed and the
thermostat returns to normal operation.
It is possible to exit the Automatic mode’s programming at any time:
• By pressing down the button.
• By not pressing down any buttons during 1 minute.
In any case, all programming is saved.
Erasing of the programming
When programming the Automatic mode, it is possible to delete a programming period.
1. Enter into the programming of the Automatic mode and reach the period, as described in the previous
section.
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