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General| Category | Control Unit |
|---|---|
| Compatibility | NIBE heat pumps |
| Mounting | Wall-mounted |
| Protection class | IP20 |
| Communication | Modbus |
| Features | Remote monitoring |
| Power consumption | 5 W |
| Operating temperature | 0 to 50 °C |
| Storage temperature | -20 to 60 °C |
| Relative humidity | 5 to 95 % |
| Control inputs | 2 digital inputs |
| Control outputs | 2 relay outputs |
Manual describes installation and service procedures for implementation by specialists.
Declares compliance with EU directive 2014/53/EU; full text available at nibe.eu.
Explains CE mark and IP20 enclosure classification.
Instructions for packaging and product disposal at special waste stations or dealers.
Product contains software covered by open source license; access source code at opensource.nibe.eu.
Explains symbols like NOTE, Caution, and TIP used in the manual.
Lists compatible NIBE products for the RMU S40.
Caution that main product software may need updating to at least version 2.0.
Image of the RMU S40 with rear panel.
Caution that climate systems 2-8 cannot have higher system temperature than climate system 1.
Caution regarding choosing the room sensor in menu 1.3.3 - "Room units".
Caution that closed floor/radiator thermostats affect indoor temperature.
Caution that RMU S40 should only have an indicative function, not control, with underfloor heating.
Instructions for installing RMU S40 without the rear panel, including screw placement and connection.
Instructions for installing RMU S40 with the rear panel, including screw placement and connection.
Diagram showing component positions on the RMU S40.
List of electrical components with their designations and functions.
Note that all electrical connections must be carried out by an authorised electrician.
Information on choosing between wireless or wired connection for RMU S40.
Instructions for wireless connection via main product menu 5.4.
Information on power supply for RMU S40 using a mains adapter or connection to the main unit.
Details on connecting RMU S40 power supply from SMO S40.
Instructions for wired connection of RMU S40 to S1155.
Instructions for connecting multiple RMU S40 with HTS 40, noting connection order and limits.
Tip to use a junction box when connecting accessories.
Instructions for wired connection of RMU S40 to S1255/VVM S320/S325.
Details on connecting accessories and RMU S40, including power supply and communication loop order.
Wiring details for connecting RMU S40 to SMO S40.
Wiring diagram for connecting two RMU S40 units to the main product.
Explains how to navigate the RMU S40 touchscreen using pressing and dragging.
Describes how to activate options and functions by pressing the display.
Explains how to browse between pages using dots at the bottom edge and dragging.
Explains how to scroll through sub-menus and information by dragging up or down.
Instructions on how to change settings, including on/off and value selection using a spinning wheel.
Explains how to access the help menu using the question mark symbol.
Details on information displayed on home screens, dependent on connected products and accessories.
Explains function pages for viewing status and making common settings.
Information on connecting RMU S40 units and setting basic configurations in the main product.
Overview of choosing between wireless or wired connection for RMU S40 installation.
Steps for wireless connection via main product menu 5.4, including naming the unit.
Tip to access the start guide for connections via menu 2.
Steps for wired connection, including assigning an address (1-8) in menu 2 - "Connections".
Instructions to make RMU S40 settings in the main product's menu 1.3.3 - "Room units".
Caution to refer to the Installer Manual for the main product.
Step to select an address (1-8) for RMU S40 in menu 2 - "Connections".
Procedure for checking and adjusting the selected address in case of communication faults.
Option to control the main product based on moisture content (RH) measured by RMU S40.
Overview of home screen settings for heating and zone browsing.
Instructions for setting heating temperature with or without room sensor control.
Caution about slow room temperature changes due to thermostats and opening valves fully.
Tip to wait 24 hours for room temperature to stabilise after settings.
Information displayed on heating function pages, including current/required temps and installed zones.
Instructions for setting cooling temperature with or without room sensor control.
Instructions for setting cooling temperature offset (-10 to +10) without room sensor control.
Instructions for setting cooling temperature (5-30 °C) with room sensor control.
Caution about slow room temperature changes due to thermostats and opening valves fully.
Tip to wait 24 hours for room temperature to stabilise after settings.
Information displayed on cooling function pages, including current/required temps and installed zones.
Instructions for temporarily increasing hot water temperature.
Information displayed for hot water function, including quantity and priority status.
Explanation of how to temporarily increase ventilation and its automatic reversion.
Information displayed for ventilation function, including active modes and unit status.
Instructions for changing pool water temperature or activating/deactivating heating.
Information displayed for pool function, including pool temperature and heating status.
Information displayed for PV Solar, including current power and monthly production.
Instructions for activating/deactivating the "Away mode" function, linked to leaving or returning home.
Instructions on how to reset alarms and activate auxiliary operation.
Setting to activate night mode for the display backlight.
Setting the schedule for activating night mode during specific times.
Steps to select wireless connection via main product menu 5.4.
Steps to select wired connection and assign a communication address (1-8).
RMU S40 is updated automatically from the main product when new software is available.
Information on alarms, their causes indicated by status lamp, and resetting the alarm.
Explanation of auxiliary operation as an emergency mode for heat/hot water production.
Caution that selecting "Auxiliary operation" does not correct the problem causing the alarm.
Troubleshooting steps for communication errors, including checking distance, cable, and addresses.
Caution that the display is off when RMU S40 is set to "Night mode".
Diagram showing the physical dimensions of the RMU S40.
Table listing technical specifications such as voltage, enclosure class, wireless frequency, and operating ranges.
Contact details for NIBE in Austria.
Contact details for NIBE in Czech Republic.
Contact details for NIBE in Denmark.
Contact details for NIBE in Finland.
Contact details for NIBE in France.
Contact details for NIBE in Germany.
Contact details for NIBE in Great Britain.
Contact details for NIBE in Netherlands.
Contact details for NIBE in Norway.
Contact details for NIBE in Poland.
Contact details for NIBE in Russia.
Contact details for NIBE in Sweden.
Contact details for NIBE in Switzerland.
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