Decentralised

VRL-C 870 D Premium

Application • Typical applications include controlled ventilation of larger spaces such as class rooms, conference rooms, sales showrooms, nurseries, restaurants and other function rooms. • The automated room ventilation improves the quality of the indoor air and reduces the level of CO2, aerosols, spores and dirt, thanks to the integral filters and heat recovery. At the same time, the high rate of air exchange reduces smells, bacteria and viruses in the indoor air. • The appliances are optimised for low-noise operation and are designed for decentralised usage directly at the point of use. • Air ducting is required for routing the outdoor and exhaust air. Extract air and supply air can be channelled to precise points in the room or building.

Convenience features • Operating modes, programs and parameters can be adjusted simply and intuitively on the programming unit. The appliances are designed for straightforward and rapid servicing and are easy to maintain. • An additional sensor (accessory) measures the CO2 concentration in the indoor air and provides fully automatic control of the appliance's air flow rate until the CO2 falls below the set level again. • With the aid of a movement sensor (accessory), the appliance can switch between basic ventilation and a higher level. • The temperature-dependent bypass automatically circumvents heat recovery when necessary. • All the appliances are fitted with an electric preheating coil and can be used even when outdoor temperatures are very low with balanced supply and extract air flow rates. • The equipment is fitted with motorised outdoor/exhaust air flaps to prevent uncontrolled flow of air in standby. • In the case of fire or loss of power, the spring-loaded outdoor/exhaust air flaps seal the airways, which helps reduce the spread of fire or flue gas through the building. • In larger buildings, up to 20 appliances can be linked and controlled using a single programming unit. The appliances are connected to a higher ranking building management system via BACnet, Modbus or LON interface (accessories). • The integral PCB allows easy integration of further functions, such as smoke detectors, intermittent ventilation, minimum ventilation, external OFF and control of a hydraulic reheating coil. • With the integral reheating coil, the supply air temperature can be raised to a comfortable level. • Thanks to permanent monitoring of temperature and humidity levels by the intelligent preheating control, demand for electrical energy is reduced to a minimum and the connected load lowered.

Installation • The appliance is designed for ceiling installation and can be built into a suspended ceiling. It can be installed at various points on the ceiling of the room. • The supply air grille on the front of the appliance can be adjusted to change the direction of the air flow. • The extract air is sucked in through the extract air grille on the right of the narrow side.

Efficiency • Energy saving EC fans, in conjunction with the control unit and other sensors, ensure efficient operation.