NOBO NTB-2T Room and Floor Thermostat Rom and Gulvtermostat Installation Guide

: June 10, 2024
: NOBO

NOBO NTB-2T Room and Floor Thermostat Rom and Gulvtermostat Installation

Guide

NTB-2T

Barn Road, Dunleer, Co Louth, A92 EH7P, Ireland
www.glendimplex.no, email@glendimplex.no

Technical data:

Declaration of Conformity (DoC)
Glen Dimplex Nordic AS declares that the equipment described in this user guide, is in compliance with the essential requirements and other relevant provisions of EU Directive 2014/53/EU. If you require a copy of the original signed DoC, please send an e-mail to: email@glendimplex.no

Warning

Products with an electronic thermostat cannot guarantee protection against frost damage. Provide extra protection for exposed installations. At the end of its service life, the product must be recycled.

Important:

The floor sensor must be installed in a tube that is sealed at the end.

The product must only be used in installations that are in accordance with current National regulations.

If a floor sensor, other than the one included in the package, is used in the installation, please note that the sensor connector is not isolated from live phase.

Sensor functionality

The thermostat has four different sensor functions:

Floor sensor:
Measures the temperature in the floor.
Temperature setting 7-40°C.

Room sensor + floor sensor (Wooden floors):
MUST BE USED for wooden floors and temperature
sensitive materials. Measures air and floor temperatures.
Temperature setting 7-40°C, however the floor
temperature is limited to max. 27°C.

Room sensor:
Measures the air temperature in the room.
Temperature setting 7-40°C.

Power regulator:
Intended for cases where a room or floor sensor is not applicable. The load is switched on/off between 0-100% within a cycle of 20 minutes.

Settings: 0 – 10 ( 0 = 0%, 5 = 50%, 10 = 100% )

The product must only be installed by a certified electrician!

Connect the power unit according to the instructions at the back. Available sensor options are:

Room sensor (Integrated in the thermostat).
Floor sensor (External temperature sensor).
22kOhm at 25°C (default setting)
Other compatible floor sensor values:
47kOhm at 25°C 10kOhm at 25°C
15kOhm at 25°C 2kOhm at 25°C
12kOhm at 25°C

The thermostat automatically detects if a floor sensor is connected, and will then use the default settings Floor sensor (22kOhm at 25°C). The settings can be changed via the setup wizard or the menu if a sensor with a different value is applied. If the sensor cable has a shield, do not terminate the shield to ground.

Assembly:

Mount the power unit in the wall connection box.
Place the frame on top of the power unit.
The interface unit clicks into place inside the frame.
Make sure the locking mechanisms are fastened both at the top and the bottom.

Disassembly:
Make sure the product is disconnected from mains before disassembly!

The interface unit can be removed using a flat screwdriver. Loosen the locking mechanism both at the top and bottom, and pull out the interface unit. The frame is now loose and can be removed.

Loosen the screws on the wall connection box and pull out the power unit.

User interface

Switch the thermostat on and off by using the slider on the left side. (A)

Up = On
Down = Standby.

The thermostat has four buttons, one in each corner, with the following symbols:

Setup wizard

In the case of an installation where the default settings are not appliccable, the setup wizard can be a useful tool.

Go to “Menu > Advanced > Start wizard” to edit the thermostat settings step by step.

The settings can later be altered via the menu, or by running the wizard once more.

Setting the day and time

Main screen

**A: Displays the set temperature. ***
When operating as a power regulator, the set power output is displayed.

C: Thermometer bar showing the measured temperature on the sensor. The small arrow (D) corresponds with the set temperature. The thermometer bar will rise and fall according to the measured room or floor temperature. When the heating element is on, the bar pulsates.

*Also see “Calibrate the set temperature”.

Overriding the current mode

Local weekly program

The thermostat can be programmed with a local weekly program to save energy during periods when you are asleep or away. A weekly program fit for your schedule will save energy without compromising your comfort.

Setting up a weekly program

A weekly program divides the week into time periods where the thermostat will be in either Comfort or Eco mode. A time period is defined by setting:

1: The day(s) the period should be active.
2: When the desired temperature should be reached.

This period makes sure the desired comfort temperature is reached by 06:00 on Monday through Friday. The thermostat calculates the startup time in order to reach the right temperature at the right hour. (Does not apply when in power regulator mode).

A time period lasts until a new time period takes over. All periods must be defined with a startup time and mode.
It is adviced to make a plan of the time periods needed, before programming the device.

Add a new time period

Go to “Menu > Weekly program” to add a new time period to the weekly program. Select “+ Add new” to create a new period.

The new time period can now be found in the list of active periods in the weekly program.

Edit or delete a time period

Deleting a time period will remove it from the weekly program and from the list of active time periods.

Backlight

When the thermostat is operated, the display will light up to improve visibility. After a little while, the light will dim back down.

Depending on the room’s brightness, one may wish to adjust the dimmed backlight level of the thermostat. Some rooms may require more light than others.

To adjust the dimmed level of the backlight, select “Menu > Backlight” and then choose between: Max, Light, Normal, or Dark.

Calibrate the set temperature

The set temperature may deviate from the actual temperature depending on thermal insulation, ventilation, thermostat position etc. If the set temperature deviates significantly from the measured room or floor temperature, the set temperature can be calibrated up to +/- 5° C.

Important:
The temperature in the room/floor must be stabilized in Comfort or Eco mode before calibrating the set temperature.

When the temperature is stable, enter the menu and select: “Advanced > Calibrate”.

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