Ventilation Units - ZeroBox Twin

Product catalog summary

General Description: The ZeroBox^® Twin is a range of centrifugal ventilation units designed for low noise levels, high performance, and ease of installation. These units are equipped with two centrifugal fans and are suitable for demanding installations. A variety of accessories are available to facilitate installation, including flexible gaskets, shutters, grills, and more. The casing is made of galvanized sheet steel with a 50 mm layer of mineral wool for noise and temperature insulation.

Specifications: The units feature double inlet centrifugal fans with forward-curved impellers, maintenance-free external rotor motors, and an external terminal box. They are designed for easy connection to spiral ducts and include integrated thermal contacts for motor protection. The performance specifications include various models with different power, airflow, speed, and noise levels. All models operate at 230V/50Hz with a single-phase power supply and have an isolation class of F and protection class of IP44 or IP54.

Performance Curves: The document provides detailed specifications for different models, including voltage, power, current, maximum airflow, speed, maximum ambient air temperature, noise level, weight, isolation class, protection, and capacitor values. The models range from 150 to 400, with varying dimensions and performance characteristics.

Controller and Accessories: The system includes a controller that manages the operation of the two fans, allowing for alternate operation to balance motor wear. The controller can detect motor failure and switch to a standby motor. It also features status indicators and optional failure output indicators. Accessories such as electronic controllers, 5-speed controllers, air filter boxes, electrical heaters, overpressure shutters, duct silencers, and vibration dampers are available.

Dimensions: The document provides dimensions for each model, with measurements in millimeters for various parts of the unit.

Additional Information: The system is designed to ensure continuous operation by switching between two fans, with options for alternate operation cycles. The CM-2 controller is specifically designed for installations where air supply is critical. The document includes contact information for the distributor, Airtecnics, based in Spain.

Catalog excerpts

Ventilation boxes of very low noise level. With two centrifugal fans of high performance.

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ZeroBox ® Twin General description A complete range of centrifugal ventilation units of very low noise level, solid, versatile and easy to mount. Designed to satisfy the most demanding up-to date installations. To make the installation easier there are available a wide range of accessories: ﬂexible gaskets, shutters, grills, circular and rectangular hoppers, dampers, duct silencers, electrical heating, ﬁltering modules and special accessories on request. Casing made of galvanised sheet steel with a 50 mm layer of mineral wool, that insulates from noise and external temperature. impellers, easy...

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Controller The CM-2 is a controller designed for ventilation installations which, the lack of air can cause an important problem. The system is based on the use of two fans; one of them is operating while the other one is on standby (A and B). It works by detecting electric current or the air ﬂow that the motor produces while working. If one motor fails a signal goes to the controller, to turn on the reserve motor. With the aim of balancing the decline of power of both motors, the option exists for making them work in alternate mode on cycles of the same duration, from four minutes to 24 hours....

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