BOSCH II 230 V Room Thermostat Underfloor User Manual

: August 29, 2024
: Bosch

Table of Contents

BOSCH II 230 V Room Thermostat Underfloor
Product Information
Product Usage Instructions
Safety instructions
Product Overview
Operation
Technical data
More Information
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Download This Manual (PDF format)

BOSCH II 230 V Room Thermostat Underfloor

Product Information

Specifications

Room Thermostat Underfloor
Compatible with Bosch Smart Home Controller II*
Functions:
- Set temperature
- Displayed temperature (current/target)
- Humidity
- Cooling
- Operation mode (manual/schedule)
- Schedule Boost
- Temperature adjustment
- Child lock
- Valve Type (normally open/normally closed)
- Heater type (underfloor heating, underfloor heating low energy,radiator, passive convector (without fan), active convector (with fan))
- Faults (battery defect, trouble, tampered)
- Automations/Scenarios Services (climate manager sustainable ventilation, heating break & cooling)

Product Usage Instructions

Setting Temperature and Mode
To set the desired temperature and mode, use the control buttons on the thermostat. Follow the on-screen instructions to adjust the settings as needed.

Using the Schedule Function
You can program a schedule for your thermostat to automatically adjust the temperature at different times of the day. Refer to the user manual for detailed instructions on setting up the schedule.

Child Lock Feature
To activate the child lock feature, press and hold a specific combination of buttons on the thermostat. This will prevent accidental changes to the settings.

Troubleshooting
If you encounter any faults or issues with the thermostat, refer to the user manual for troubleshooting steps. Contact customer support if the issue persists.

Room thermostat II 230 V
quick instructions
Product description
The room thermostat II 230 V allows you to control your wired heating applications conveniently via your Smart Home system.

Description of the symbols

Warning!
Note about hazards

Note:
Additional important information

Note about the installation video

Safety instructions

Read this user manual completely before installing or commissioning the device and pay particular attention to the hazard information.
The installation of this device and work on the 230 V network must only be carried out by an electrician.
The device is not a toy! Do not allow children to play with it. Never leave the packaging material lying around unattended. Plastic film and small parts may pose a danger to children.
This device may be used by children from 8 years of age and by persons with reduced physical, sensory or mental capacities, or a lack of experience and knowledge provided these persons are supervised or have been instructed in the safe use of the device, and understand the corresponding risks.
When remotely or automatically controlling a device, it is not always possible to guarantee that commands are actually executed or that the correct device status is displayed in the app and on other Smart Home display devices because of external circumstances. This may lead to material damage and/or personal injury. Therefore, you must ensure to the greatest extent possible that no person is endangered at the time of remote operation or automated control. Please take special care when setting up or adjusting the remote control or when using the automated control and check the desired functionality at regular intervals.
Do not paint over the device! Do not apply wallpaper or paste over the device!
The device is not suitable for disconnection.
For safety and approval reasons (CE/UKCA), the device may not be modified and/or no changes may be made to the device without authorisation.
Any use other than that which is described in the user manual is considered improper and leads to the exclusion of guarantee and liability.
We accept no liability for material damage or personal injury which is caused by improper use or failure to observe the safety instructions. In these cases, any guarantee claim becomes void! We accept no liability for consequential damage.
Do not use the device if it has damage visible from the outside, for example, to the housing, control elements or connection sockets, or if it has a malfunction. If in doubt, please contact our service team.
Only operate the device indoors and do not expose it to moisture, vibrations, constant sunlight or other sources of heat, extreme cold temperatures and mechanical stress.
Do not open up the device. It does not contain any parts to be maintained by the user. If a fault occurs, have the device checked by a specialist.
Only use the device together with original components and recommended products from Bosch partners.
Only operate the device with the control element attached.

Notes

The range within buildings can differ significantly from the range in open spaces. In addition to the transmitting power and the receiving properties of the receiver, environmental factors such as humidity, as well as the local structural situation, play an important role.
The device is only intended for use in residential environments.
The device is only intended for private use.

You can also use the explanatory videos and additional information on our website as an additional aid for mounting, installing, starting up and restoring the factory settings on your Bosch Smart Home room thermostat II 230 V: www.bosch-smarthome.com/rom/
room-thermostat-2-230V

Product Overview

Item	Name
1	Control unit
2	LED display
3	Status LED
4	Rotary knob/system button
5	In-wall housing (power supply and switching

relay)

6| Control unit connector
7| Power supply and consumer terminals
8| Sensor terminals
9| Wire bridge

(Only use consumers at 230 V AC!)

LED display (2)

Item	Name	Description
a	Information area	Displays error codes or other additional

information.

b| Humidity| Displays room humidity in normal operation.
c| Secondary temperature display| Reserved for the display of further temperature

values (if applicable, optional accessories required)

problem with the controller.

| Child lock| Press the system button > 3 seconds, adjust the

desired value by turning

| Open window| The system has detected an open window in the

room. Heating/cooling mode paused.

(press system button 1x, select mode)

The status LED (3) shows the status of the room thermostat using flashing codes.

Signal Meaning Measures

Flashes orange| Pairing mode (is active)

or device is communicating with the controller

| Please wait
Flashes green| Pairing mode (successful) or process confirmed|
Flashes red 1x| Pairing mode (not successful) or process failed| If this is the first tuning attempt, please try again. Otherwise reset the device to the factory settings and contact the service department if necessary.
Flashes red every 15 seconds| Functional error| Look for information in the Smart Home app. Contact the service team if necessary.

Notes regarding installation

The standards and directives applicable in your country must be observed during planning, set-up, operation and maintenance.
The device is part of the building installation.
Operation of the device is only permitted at 230 V/50 Hz AC voltage. Work on the 230 V network may only be carried out by an electrician. The applicable accident prevention regulations must be observed here. To avoid an electric shock on the device, please switch off the mains power. Failure to observe the installation instructions may result in fire or other hazards.
Mounting must be carried out following the applicable requirements. Failure to observe the requirements may result in damage to property and/or injury, or even danger of death. Please also note any additional information on the product.
A 230 volt alternating current power supply is required for this product (the device must have a phase and neutral conductor).
The product is only intended for fixed installation in in-wall switch boxes with a minimum depth of 35 mm and a screw distance of 60 mm (in accordance with DIN 49073-1) in indoor areas.
The supplied wire bridge (connection “COM” and “L” connections) may only be installed with 230 VAC consumers. Non-observance can lead to destruction of the device, fire or electrical accident!
When connecting the device terminals, ensure that permitted wires and wire cross sections are used.
The consumers connected to the relay outputs must have sufficient insulation.
Observe the technical data, in particular the maximum permissible switching power of the relay and the type of consumer to be connected, before connecting a consumer.
The device should only be loaded to the specified power limit. Overloading may result in destruction of the device, fire or an electrical accident. Among other things, reliable switching off of the connected consumer cannot be guaranteed.
The power circuit to which the device and the load are connected must be secured with a circuit breaker in accordance with EN 60898-1 (trigger characteristics B or C, max. 16 A rated current, min. 6 kA breaking capacity, energy limitation class 3). Installation guidelines in accordance with the applicable national standards, e. g. VDE 0100 or HD384 or IEC 60364, must be observed. The circuit breaker must be easily accessible for the user and labelled as a disconnecter for the device.
When using the device in wet rooms such as bathrooms, a minimum distance of 60 cm from wet areas, such as a bathtub, shower or wash basin must be maintained.

Installation and mounting
Before you start: Be sure to shut off the power circuit breaker!
If necessary, remove an existing thermostat.
Connect the room thermostat II 230 V according to the connection diagram that suits you.

Operation

Operation with 230 V devices

Connection

L

| Description

External conductor (230 VAC)

---|---
N| Neutral conductor
COM| Voltage-free input. For 230 V devices, connect the supply voltage to “L” via a wire bridge.
NO| Switching output for consumers
S1/S2| Connections for external sensors or

potential-free contacts.

T| External temperature sensor (available as optional accessory), e. g. installed in the floor.
| 230 V actuator

Operation with 24 V devices

Connection

L

| Description

External conductor (230 VAC)

---|---
N| Neutral conductor
COM| Voltage-free input.

For 24 V devices, input for the external

24 V voltage supply.

NO| Switching output for consumers
S1/S2| Connections for external sensors or

potential-free contacts.

T| External temperature sensor (available as optional accessory), e. g. installed

in the floor.

| 24 V actuator

Operation with boiler

Connection

L

| Description

External conductor (230 VAC)

---|---
N| Neutral conductor
COM| Voltage-free input.
NO| Voltage-free output.
S1/S2| –

Attach the in-wall housing to the wall box using suitable screws. Pay attention to correct orientation (Bosch writing at the top and readable): Place the control unit on the in-wall unit and press it in until it clicks into place.

Now switch the power back on.
As soon as the room thermostat is connected to the power supply, tuning mode starts and is active for 3 minutes. Tuning mode can be restarted at any time by pressing the system button (4).

The room thermostat can also be operated independently, with no connection to the Smart Home system. The range of functions is then essentially limited to displaying and controlling the room temperature in conjunction with the connected heat generator according to the preset target temperature in the manual operating mode (without a time program).

In the event that an initial start-up is required without a Smart Home system (e.g. new build), basic settings can be made on the device via an installer mode. To this end, press and hold the rotary knob (4) for at least 3 seconds until the display shows “INS”. By turning the knob (4) you can make a selection and confirm the selection by pressing it.

Level 1| Display

Level 2

| Level 3| Description
---|---|---|---
UFH| | | Potential application, e. g.

230 V/24 V actuators

e.g. boiler

RAD| –| –| Radiator, operation with 2nd generation Bosch Smart Home radiator thermostats

After connecting the room thermostat to the Bosch Smart Home system, you can also make all device settings in the Smart Home app.

Start-up
Ensure that you have a Bosch Smart Home controller and the Bosch Smart Home app and have successfully configured both. Now start the Bosch Smart Home app and select “Add new device”. Follow the instructions in the app.

Resetting to factory settings

You can reset the device to its factory settings as follows:
Remove the control unit from the in-wall housing. When reinserting it, hold the rotary knob (4) until“RES” appears on the display. Release the rotary knob and press it again. The device then restarts. Please note that it can take a few seconds until the room thermostat is ready for operation again.

When resetting to factory settings, the settings and information are only lost from the device and not from the Bosch Smart Home controller.
To re-configure the device, first delete it in the device management section of the Bosch Smart Home app and then add it again in the usual configuring process.

Maintenance and cleaning
The device does not require maintenance. Leave any repairs to a specialist. Clean the device with a soft, clean, dry and lint-free cloth. When cleaning, do not use any cleaning agents containing solvents.

Simplified declaration of conformity
Robert Bosch Smart Home GmbH hereby declare that the radio equipment type Bosch Smart Home BTH-RM230Z corresponds with the directive 2014/53/EU. The complete text of the EU declaration of conformity is available via the following web address: https://gb-doc.bosch.com

Robert Bosch Smart Home GmbH hereby declares that the radio system type BTH- RM230 complies with Regulation 2017. The full text of the declaration of conformity is available at the follow-ing internet address: https://gb- doc.bosch.com

Environmental protection and disposal
Electrical or electronic devices which are no longer usable must be collected separately and disposed of via an environmentally friendly recycling facility (European Directive on Waste Electrical and Electronic Equipment). Use your country’s specific return and collection systems when disposing of waste electrical or electronic devices.

Technical data

Device type designation	BTH-RM230Z
Protection type	IP21
Ambient temperature	0 – 50 °C
Max. humidity	80 % (non-condensing)
Housing dimensions (W × H × D)	86 × 87 × 35 mm
Weight	131 g
Radio protocol	ZigBee 3.0
Radio frequency	2.4 – 2.4835 GHz
Max. transmitting power	10 dBm
Radio range in the open	< 100 m
Software class	A
Receiver category	2
Supply voltage	230 VAC/50 Hz
Max. power consumption	1 A
Overload protection	Thermal cutoff
Cable type and cross-section	Rigid and flexible cable 1.0 – 1.5 mm²
Installation	In device sockets with a depth of at least 35 mm and a device

Technical modifications reserved

FAQ

Q: How do I change the battery in the thermostat?
A: To replace the battery, carefully remove the cover on the back of the thermostat and replace the old battery with a new one of the same type.

Q: Can I use this thermostat with a different home automation system?
A: The Room Thermostat Underfloor is specifically designed to work with the Bosch Smart Home Controller II. It may not be compatible with other systems.