Our stove control technology and system controls for greater operating comfort
Imagine heating your stove incorrectly without even realizing it. With BRUNNER control and regulation technology, you’ll enjoy your wood fire even more. Our stove and system controls ensure lower wood consumption without heat loss, less pollution, cleaner emissions, and maximum ease of use. Each control unit is precisely matched to our appliances, taking into account every detail and possible disturbance during combustion – true to the quality standard you expect, made in Germany.
BRUNNER controls manage not only the air supply for combustion but also detect typical user errors when loading wood. If too little, damp, or unsuitable firewood is used, the system provides helpful feedback. These important prompts significantly improve user behavior and combustion quality, protecting both the environment and your wallet.
The different BRUNNER control systems
EAS - Electronic combustion control
For those who want perfection, the BRUNNER electronic burn control (EAS) is the answer. Simply light the fire and add wood — the control system takes care of the rest.
With the BRUNNER EAS, efficient and proper heating becomes effortless. It saves wood and real money.
- For fireplaces and stoves
- Easy operation with a clear, user-friendly control and information display
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Affordable combustion air control for fireplaces and storage stoves
“A wood-burning system is only as good as the fuel and how it’s operated.” That means proper heating with wood requires not only a well-built system but also knowing how to use it correctly. The wood must not be too moist or consist only of large pieces. Most importantly, the air supply has to be right. Normally, the combustion air is adjusted manually using a control lever. If it isn’t properly regulated, the result is incomplete combustion – a heavily sooted glass pane, unburned wood residues, short ember retention, and unpleasant odors outdoors.
The BRUNNER stove control helps prevent all that. Simply load the wood, light the fire, and the entire combustion process up to the ember phase runs automatically. You don’t need to be present during the burn. For fireplaces and stoves that only require combustion air regulation, the current version of the Electronic Burn Control (EAS) is the ideal solution. This cost-effective air automation technology covers the key functions for nearly all types of fireplaces – setting the standard for convenience and safety in wood heating.
Electronic stove control EOS
If you plan to install a boiler unit, we recommend the BRUNNER Electronic Stove Control (EOS). It not only regulates the optimal combustion of a water-bearing tiled stove or fireplace but also handles all complex control tasks with ease at the touch of a button, making it perfectly suited to the demands of a modern heating system.
With the BRUNNER EOS, wood is always burned efficiently and cleanly. It could not be simpler or more effective.
- For water-bearing stoves and fireplace systems
- Intuitive operation with a clear and user-friendly control and information display
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System control for modern stove and heating systems
The EOS is a system control unit designed for maximum operating comfort. In addition to automated combustion air control, it manages and displays various components of a modern stove and heating system. Especially in complex heating setups, easy and intuitive operation is essential. Over many years, we have continuously refined the touch display interface into a clear, self-explanatory control and information unit. Typical applications of the EOS include water-bearing stove and fireplace systems. It is also used for motorized control functions and additional sensors.
Supplement for EOS: the comfort solution for the heating center
A perfect solution for integrating water-bearing stove systems into a heating setup. Hydraulics and control technology are combined into one coordinated system with a modern and user-friendly interface.
The BRUNNER heating center is a fully preassembled, turnkey heating and storage system. It is designed for connecting and managing multiple heat sources, with a particular focus on integrating water-bearing stoves and fireplaces. Its eco-hierarchical mode of operation prioritizes renewable energy sources. Over the past 20 years, we have continuously refined the hydraulic and control functions to achieve optimal performance. Whether in a new installation or a heating system modernization with existing components such as hot water tanks or old oil boilers, the heating center integrates all heat generators into the home system and optimizes the interaction between energy sources.
Depression safety cut-off-switch USA
It saves lives: the BRUNNER negative pressure safety switch (USA) monitors both the room and chimney pressure during combustion. If the pressure difference required for safe fireplace operation is no longer sufficient, it automatically switches off all ventilation systems such as kitchen extractor hoods. This allows tiled stoves and fireplaces to be installed and operated safely, regardless of the building’s ventilation setup.
The BRUNNER negative pressure safety switch monitors room and chimney pressure during combustion.
- It switches off ventilation systems when the pressure difference is no longer sufficient for safe fireplace operation.
- This prevents flue gases from entering the living space in the event of a ventilation system malfunction.
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Safety for operating fireplaces and stoves with ventilation systems
What should you do if your home has a ventilation system or a kitchen extractor hood in the same room as the fireplace? In such cases, a malfunction or the operation of the ventilation system can create a critical negative pressure near the combustion chamber. In extreme situations, this may prevent the flue gases from venting through the chimney and cause them to be drawn into the living space instead.
To prevent this, regulations introduced in 2006 require that ventilation systems, extractor hoods, and room-air-dependent fireplaces may only be installed and operated together if a safety shutdown occurs when a critical negative pressure develops near the fireplace. The BRUNNER Negative Pressure Safety Switch (USA) was developed precisely for this purpose.
Principle of negative pressure monitoring
The monitoring unit is installed in a flush-mounted box near the stove. Inside it, a highly sensitive pressure sensor continuously measures the pressure difference between the stove and the surrounding room. If a malfunction or improper coordination of the ventilation system causes the pressure to reach critical levels, the safety circuit automatically shuts down the responsible ventilation systems.
Short-term pressure fluctuations caused by wind gusts at the chimney or by opening windows and doors are filtered out. The BRUNNER Negative Pressure Safety Switch is perfectly suited and officially approved (DIBt No. Z-85.1-8) for nearly all wood-fired stoves operating with natural draft and an external air supply. It can also be configured to monitor multiple ventilation systems or kitchen fans simultaneously.
Bavarian Passion
With an easy-to-use control system, you have the entire heating system in view.
With an easy-to-use control system, you can keep your entire heating setup in view
System safety, optimal emission values, and user comfort were the reasons why BRUNNER became the first company to develop electronic stove controls for wood-burning units back in 1990. With more than 100,000 units installed, the EOS is the most successful and best-selling control system in the fireplace and tiled stove industry. BRUNNER stove controls take into account all the unique characteristics and possible influencing factors of a burn cycle.
Simply load the wood, light the fire, and the heat release process runs automatically – guaranteeing long ember retention times. The EAS and EOS represent the current state of the art in fireplace and stove control technology. Combined with other system solutions from BRUNNER, the entire heat management of a building can be centrally controlled and clearly displayed on a touch screen. All stove and heating functions can be operated directly from the BRUNNER touch display.
FAQ Control systems
- What makes the negative pressure safety switch (NPS) so reliable?
- At BRUNNER, the NPS (negative pressure safety switch) is based on proven technology – the kind used in aircraft engineering. To measure the difference in pressure, a barometric capsule is used. Its expansion is detected and processed electronically. The precision mechanics are of high quality and long-lasting, ensuring exact and highly sensitive measurements for many years without the need for replacement or maintenance.
- As an alternative to the NPS 3, BRUNNER has now introduced the NPS 4. Instead of the barometric pressure capsule, the fourth generation uses a piezo-crystalline pressure sensor that no longer requires calibration.
- How does the NPS (negative pressure safety switch) work?
- The NPS is installed close to the fireplace. During operation, the control unit monitors the pressure difference between the stove and the room. Short pressure fluctuations caused by wind gusts at the chimney or by opening windows and doors are filtered out by the NPS.
- The sole purpose of the negative pressure sensor is safety. For this reason, there is no display. The NPS is easy to use and approved by the DIBt. A red and a green LED are all that’s needed to show the operating status. If the red LED lights up, it indicates a clear safety risk.
- What is the NPS (negative pressure safety switch) needed for?
Since 2006, the law has required a monitoring device for manually built fireplaces in airtight buildings with ventilation systems or extractor hoods. That’s why BRUNNER developed the negative pressure safety switch (NPS). It ensures that, in case of a malfunction in the ventilation system or when the kitchen fan is running at the same time, flue gases do not enter the living space.
Air-extracting systems – including tumble dryers – can create such a strong negative pressure that toxic gases like carbon monoxide no longer escape through the chimney but are instead drawn back into the room. A kitchen hood can create a dangerous negative pressure in as little as five to ten seconds. These gases are invisible and usually odorless.
If a critical negative pressure is detected near the fireplace, the NPS immediately shuts down the air-extracting systems. Once the required pressure level is restored, the safety switch reactivates them.
- How safe is the EOS?
- Unique when it comes to safety: all components are constantly monitored for proper function. For this purpose, dual door contact switches are built in.
- In case of a component failure or power outage, a 9-volt battery ensures the system automatically moves into its safety position. In such a situation, the fireplace can also be operated manually.
- How does the EOS control work?
- The control panel, protected by a durable glass front, provides information about the combustion process, current burn temperatures and much more. Burning wood couldn’t be easier or more efficient.
- The graphic interface of the touch display has been continuously refined over the years into a clear, intuitive information and control unit. By simply touching the text or graphic icons, you can access all displayed functions and information.
- BRUNNER system controls can be updated via the USB port on the touch display, ensuring your EOS always stays up to date with the latest technology.
- What is the EOS control system used for?
With well over 100,000 units installed, the EOS has been one of the best-selling control systems in stove and fireplace construction since its introduction in 1991. All BRUNNER heating and fireplace inserts are designed so they can be equipped or retrofitted with this control system at any time.
The EOS is typically used in water-bearing stove and fireplace systems, but it’s also applied wherever motorized control functions or additional sensors are needed.
Except for placing and lighting the logs, every operating step is fully automated. The control unit regulates the air flap motor, which controls the exact amount of combustion air through a tightly sealed flap. Door contact switches on the stove door detect when the burn starts, and the system then optimally manages the process using a combustion chamber sensor.
- How safe is the EAS?
- All components are constantly monitored by the control system. This monitoring function is managed through the internal data bus system.
- Safety-relevant parts, such as the door contact switch, are installed twice or equipped with additional sensors. Only when both signals match does the component operate correctly.
- The same applies to the actuator of the combustion air flap. The BRUNNER safety concept requires feedback to confirm that the flap is in the correct position.
- “Emergency mode” in case of power failure: a built-in battery provides the necessary power to move the combustion air flap fully into its safety position. This ensures that flue gases can always escape safely through the chimney, no matter what operating state the stove is in.
- How does the EAS control work?
- User-friendly and easy-to-understand control interface with clear graphics and symbols.
- Combined with other BRUNNER system solutions, it allows the entire heating management of a building to be centrally controlled and clearly displayed on the touch screen.
- What is the EAS used for?
- The EAS is an affordable combustion air control system for fireplaces and storage stoves.
- It helps you burn wood the right way. During combustion, besides using wood that’s not too damp or too coarse, the correct air supply is essential.
- If the combustion air — normally adjusted by hand — isn’t properly regulated, unwanted effects of incomplete combustion can occur: a heavily sooted glass window, unburned wood pieces, short ember retention, and unpleasant odors outdoors.
- The electronic combustion control from BRUNNER largely prevents these issues. Simply load the wood, light it, and the entire burn process up to the ember phase runs automatically. You don’t need to be present while the fire is burning.
- What to do in case of a power failure or a component malfunction?
We’ve thought of that, too. At no point should there be a safety risk – no matter what the operating state is. This level of safety is unique to BRUNNER. All components are monitored by the control system. Safety-relevant parts, such as the door contact switch, are installed twice or equipped with additional sensors. The same applies to the actuator of the combustion air flap. The BRUNNER safety concept requires feedback to confirm that the flap is in the correct position.
This monitoring function is handled by the internal data bus system. Experience and expertise are essential to ensure our control systems run smoothly and reliably.
In case of a power failure, an “emergency program” is automatically activated. A built-in battery provides the necessary power to fully open the combustion air flap – moving it into its safety position. No matter what operating state the stove is in, the flue gases can always escape safely through the chimney, preventing any damage or danger.
BRUNNER craftsmen search
If you are interested in a BRUNNER stove or heating system, please contact one of our craftsmen.
