Central ventilation system

Effective dehumidification works only when the humidity outside is lower than inside. This is also temperature dependent. The controller uses the sensors to detect when optimal ventilation conditions are present. Only then it activates the ventilation. Faulty ventilation with warm humid air from outside is prevented.

Often in basement rooms are located laundry room, laundry drying room, sauna or fitness room. Surges of moisture, for example after a sauna session or after hanging up a load of wet laundry, are detected by the moisture sensor and the ventilation is activated at intensive level for a limited time to remove the moist air from the room as quickly as possible.

Yes, the control system detects a momentary high moisture load and automatically activates the ventilation, which quickly and efficiently brings the steam outside. At the same time, however, it ensures that in normal everyday life, ventilation only takes place when the outside air is drier than the basement air. this provides optimal cellar climate.

Yes, individual systems can be realized for both single-family houses and apartment buildings. They are planned individually according to the size and situation on site. In larger properties, where basements are shared by many residents, it is often useful to have more sensors, additional or more powerful ventilation elements, and other controls. Compact single-family basements are individually designed in terms of ventilation to suit the particular use by the homeowners. Where desired and appropriate, they can be integrated with the rest of the rooms in the house in a common ventilation concept or equipped as needed, for example, with a sauna ventilation.

LIMODOR basement ventilation systems are available in a standardized basic configuration as well as in a configuration that can be planned as desired.

Yes. Some systems even have a “party mode”, which reacts to the temporarily increased load caused by many people in the room and adjusts the ventilation output accordingly. At the end of the party, the system falls back to the particularly energy-efficient everyday operation.

This is system and control dependent. Often, central ventilation systems have a very economical base load operation when the occupants are absent, which only takes corrective action for a few minutes to ensure the set room climate parameters. However, these change little in empty rooms. Individual fans or decentralized systems can also be switched off completely as required.

Of course! For example, most controlled ventilation systems have a summer mode that takes into account the active use of a terrace or balcony and adjusts the ventilation function accordingly. In cold or bad weather, on the other hand, the best indoor climate is always ensured without energy-consuming window opening.

In this case, a powerful fan box is the ideal solution, which simultaneously extracts air at several points and brings it outside via poppet valves installed in a central exhaust pipe running across the basement. Dry fresh air enters the basement from outside via a second fan box, a central supply air pipe and poppet valves in the reverse direction. A control system ensures that the ventilation is only activated when ventilation conditions are optimal.

To prevent fire and smoke from spreading through the exhaust ducts of a central ventilation system in the event of a fire, the building code prescribes standardized protective devices tested by independent testing bodies for their function and effect, and installation principles to be observed. These include, above all, cold smoke barriers and fire protection bulkheads or dampers. They are installed in the pipe network, are maintenance-free and automatically and safely close the pipe in case of fire. A suction effect caused by the prevailing temperature-related pressure differences is thus prevented.

Fire protection bulkheads or dampers separate the room affected by a fire by heat-resistantly locking the exhaust pipe leading out of it above a certain temperature, thus preventing the fire from spreading to the rest of the pipe system. Cold smoke barriers prevent the penetration of smoke and vapors in ventilation units in the other rooms. They are closed by a spring as standard and are opened only when the fans are in operation by the airflow leaving the room. This always ensures protection from smoke from the pipe system in areas not affected by the fire.

Single-pipe ventilation systems and fans must be installed professionally and in accordance with building codes to provide this life-saving safety. Fire protection bulkheads and cold smoke barriers are included in Limodor’s product range as accessories and meet the highest safety standards. In the Limodor single-pipe ventilation system, the fire protection devices are already integrated in the fan housing.

The control of a central ventilation system has different functions depending on the specific design. In the AirClean system, the central fresh air supply and several decentralized exhaust air units, such as the Limodor F/M single-pipe fans, are controlled in an optimally coordinated manner for base load operation by a control element mounted in the electrical control box. Demand ventilation, party mode or summer mode are also set via the central control. Exhaust air elements are additionally individually controllable in each room. They can, for example, be switched from base load to full load for a short time in the bathroom by means of a humidity sensor or in the toilet by means of a motion sensor and thus quickly perform their respective ventilation task.

A special case is the AirBase basement ventilation: Here, the controller receives measurement signals from humidity and temperature sensors located in the basement and outside. Depending on these signals, cellar drying is activated when conditions are optimal. But even here, for example with the Limodor F/M-EC single-pipe ventilation system with humidity module, the humid air surge of a sauna can be quickly extracted at full capacity. Mold growth and basement moisture are optimally prevented by this combination of energy-saving base load operation and short-term demand ventilation at full load.

In times of scarce and expensive living space, the basement is increasingly coming into focus as an additional reserve of space. For example, for the home office, but also for a sauna or a fitness room. A well-known problem even in modern houses: Especially in summer, mold or musty smells often form on the cool basement walls due to condensation of moist warm outside air. Simple ventilation is of no use here, it often even aggravates the situation.

The AirBase basement ventilation system therefore works sensor-controlled. Humidity and temperature inside and outside are measured. A smart control unit ensures that only dry outside air enters the house. Humid or odorous indoor air is extracted. This provides optimal cellar drying. Sauna ventilation can also be integrated. Mold protection is thus guaranteed, as is full flexibility in design and operation analogous to residential ventilation.

Sometimes central ventilation is optimal. For example, if it can be planned from scratch for the entire living area in a new building with maximum efficiency. Or as basement ventilation, where a smart control system ensures condensation, mold growth and typical musty basement odors for the entire basement floor under sensor control.

A decentralized living space ventilation system with heat recovery is often ideal for renovations. It is ideal for retrofitting small apartments, offices or bedrooms, for example, where installation costs are manageable. In addition, these systems are very quiet and extremely energy efficient.

Sometimes, however, single units in only some rooms such as toilets, bathrooms, wellness rooms, utility rooms or garages are the best solution. Control modules allow the fans to be optimally adapted to the task at hand and automated. Combined with properly executed window ventilation in the rest of the apartment, this creates an inexpensive, yet energy-saving and comfortable solution.

The advantages and disadvantages, and then the appropriate system selection, are best made together with the architect or builder and the installer who will plan and implement the ventilation design.

The advantage of centrally controlled living space ventilation is an optimal feel-good climate throughout the entire living area. The connected supply air and exhaust air units run at a permanent, very energy-saving base load level. However, each of these ventilation units can be individually switched to other operating levels by means of overrun relays, humidity control, motion detectors or similar. In the case of WC ventilators or bathroom ventilation systems, for example, the respective ventilation elements are adapted to the optimum operating mode in terms of space and time. The great advantage of this is that the supply and exhaust air are not simply routed through the house wall, but first through the heat exchanger. This means that the thermal energy of the exhaust air, which would otherwise be lost, tempers the incoming fresh air. Each time a small, but in total a large contribution to climate protection and heating cost reduction.

The AirClean system also offers winter and summer modes, as well as “party mode”. With many visitors at the same time, this ensures that the temperature, humidity and fresh air supply remain comfortable for everyone by increasing the ventilation capacity. Maximum flexibility is therefore always ensured with controlled residential ventilation from Limodor.