Stelpro STE252NP+ Bedienungsanleitung

Energy Veried

USER’S GUIDE

STE252NP+

SINGLE PROGRAMMING

ELECTRONIC THERMOSTAT

For further information or to consult this guide online,

please visit our website at www.stelpro.com

INSSTE252NP+0414

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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

         

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



or fuse. You must regularly clean dirt accumulations on the thermostat.



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 electronic thermostat STE252NP with or without backlight (indicated by a

+ at the end of the code) 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 10,4 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 10,4 A with a resistive load (2500 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.

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:

DESCRIPTION

INSTALLATION

4INSSTE252NP+0414

• 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

obstruction.

3. Using a screwdriver, loosen the screw retaining the mounting base of the

thermostat until you feel a loose (do not completely remove the screw).

Then, remove the mounting base at the back of the thermostat by tilting it

downward, 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 hole at the base of 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

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

6INSSTE252NP+0414

6. Place all the wires into the connection box.

7. Align the notch on the top of the thermostat with the wall plate. 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

7INSSTE252NP+0414

Intial start up

When powering on for the first time, the thermostat is initially set to Day mode

. The temperature is displayed in Celsius and is set at 21 degrees by default.

Ambient temperature/

timer

Heating power

indicator

Single programming mode

Security mode

Fan mode

Top button

Pictograms

Frost-free warning

Day mode

Night mode

Bottom button

OPERATION

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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). In

Day mode, you can turn off the thermostat by lowering the set point below 3°C. The

set point value displayed will be --.-, and heating system start up will be impossible.

Day mode and Night mode

The thermostat includes a Day mode and a Night mode , both of them

having their own independently adjustable and recorded set point. When switching

from one mode to the other, the system will automatically use the temperature set

point corresponding to the Day/Night mode selected. The standard factory set

point adjustment is 21°C (70°F) for the Day mode, and 18°C (64°F) for the Night

mode.

The current Day/Night mode selection is indicated on the display by the Sun or

Moon icon. In order to manually switch from one mode to the other, simultaneously

press down the two buttons and release them immediately.

9INSSTE252NP+0414

Night mode timer

The Night mode features a timer that automatically returns to the Day mode after

a selectable time period. This timer allows the temporary use of a temperature set

point. The standard factory adjustment of the timer is 8 hours. With this adjustment,

the thermostat automatically returns to Day mode 8 hours after being switched to the

Night mode.

For example, if you want a night temperature lower than the day temperature, both

Day/Night mode set points will first have to be set at the desired temperatures. Before

bedtime, the Night mode temperature set point will be activated by switching manually

to the Night mode. The timer is set for the duration of the night. The thermostat will

automatically return to the Day mode at the end of the night, and the Day mode

temperature set point, which is higher, will become effective at this time.

Night mode timer adjustment procedure

1. If necessary, adjust the Day/Night mode set points at the desired temperatures.

If needed, switch from one mode to the other by simultaneously pressing down

the two buttons and releasing them immediately.

2. From the Night mode, simultaneously press down the two buttons for more than

3 seconds until the Moon icon blinks.

3. If needed, adjust the timer by pressing down the top button to increase the

value, or the bottom button to decrease it. The adjustment range is from 1

hour to 999 hours. To quickly scroll through timer values, press and hold down

the button.

4. When the adjustment is completed, release the buttons and wait for 5 seconds

to exit the adjustment function.

NOTE: The Night mode timer will be automatically reinitialized to the latest recorded

value when switching from the Day mode to the Night mode. It is not necessary

to readjust the timer every time you switch to the Night mode. The timer is also

reinitialized when this value is adjusted. Once the timer has completed its cycle

and when the thermostat is in the Day mode, you must manually return to the

Night mode. If you want to automatically return to the Night mode, the Single

programming mode must be selected.

10 INSSTE252NP+0414

Single programming mode

The Single programming mode, which is associated with the Night mode timer,

allows alternating between the Day/Night modes and the two corresponding set

points over a 24-hour period. Once activated, this mode allows an automatic

return to the Night mode after 24 hours. The Single programming mode allows

you to define two periods in a single day with different set points.

For example, if the Single programming mode is activated and the Night mode

timer is set at 8 hours, the thermostat will be operating in the Night mode for 8

hours at the night temperature set point. Then, it will return to the Day mode for 16

hours operating at the day temperature set point. At the end of the 24-hour cycle,

the thermostat will return to the Night mode, and the cycle will start over. The 24-

hour cycle starts with the Night mode as soon as the Single programming mode

is activated. The Single programming mode activation should be made when you

want to return to the Night mode. The normal course of a cycle in the Single

programming mode is as follows:

1- Night mode: activated for the duration of the Night mode timer cycle. It returns

to the Day mode when the timer cycle is completed.

2- Day mode: activated for the remaining time of the 24-hour cycle. It returns to

the Night mode at the end of the 24-hour cycle.

Adjustment procedure of the Single programming mode:

1. If necessary, adjust the Day/Night set point at the desired temperatures. If

needed, switch from one mode to the other by simultaneously pressing down

the two buttons and releasing them immediately.

2. From the Night mode, simultaneously press down the two buttons for more

than 3 seconds. If needed, adjust the timer by pressing down the top button to

increase the value, or the bottom button to decrease it. The Night mode timer

adjustment range is from 1 hour to 23 hours in the Single programming mode.

To quickly scroll through the timer values, press and hold the bottom button.

NOTE: If you set the timer to any value exceeding 23 hours, it will be impossible to

activate the Single programming mode and if it was activated, the Single

programming mode will be deactivated.

3. Activate the Single programming mode by simultaneously pressing down the

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