General
Degree of protection	IP 45
Motor type	AC split-phase motor
Storage type	Ball bearing
Overload protection	Thermal
Direction of rotation	non-reversible
Impeller	5 profiled plastic blades
Mounting method	spring clip mounting
Pipe nominal diameter	100 mm
Touch protection	according to DIN EN 294
Housing material	Plastic
Grid grille	With upward-facing louvres
Operation	for continuous operation
Maintenance	maintenance-free
Accessories	MF 90 mounting flange, WES 90/100 wall mounting kit

The Helios Ventilatoren HR 90 KE is a small fan for use in ventilation systems, particularly in ducts with a nominal diameter of 100 mm. It features a spray water-protected plastic housing with an integrated grille cover and is designed for use in indoor environments where a certain level of moisture exposure may occur. The housing provides shock protection in accordance with DIN EN 294, ensuring safe operation and installation. The upward-facing lamellae of the grille cover prevent direct visibility into the suction opening and the built-in pre-rotor, which is beneficial both aesthetically and in terms of safety.

Applications

The HR 90 KE is suitable for use in residential and commercial rooms where continuous, quiet, and maintenance-free ventilation is required. It is frequently mounted in ducts installed in ceilings or walls and is particularly suitable for systems where tool-free installation is advantageous. The snap-clamp mounting allows for quick and easy installation without additional tools. The fan is used in ventilation systems requiring continuous air movement, for example in bathrooms, kitchens, or small production rooms.

Functions and Equipment in Detail

The fan features an impeller with five profiled plastic blades, which ensures high efficiency. The blade design optimizes airflow and minimizes air resistance. The motor is an AC split-pole motor designed for continuous operation and equipped with a thermal overload protection. This protects the motor from damage due to overheating and ensures a long service life. The bearings are maintenance-free, lifetime-lubricated ball bearings, which require no maintenance and provide high operational reliability. The fan is not reversible, meaning it can only be operated in a fixed direction of rotation.

Technology Explained Simply

The housing of the HR 90 KE is rated with protection class IP 45, meaning it is protected against splashing water from all directions and dust cannot enter the interior. This protection class makes the fan suitable for areas where occasional moisture or splashing water may occur, but not for permanent wet conditions or submersion. The snap-clamp mounting allows for quick installation in ducts with a nominal diameter of 100 mm, without requiring additional tools. The integrated grille cover with upward-facing lamellae ensures safe operation by preventing contact with moving parts.

Compatibility and Accessories

Various accessories are available for the HR 90 KE, which facilitate installation and use. These include the MF 90 plastic mounting flange in alpine white, which ensures secure fixation in the duct, and the WES 90/100 wall mounting kit, which enables installation in walls. These accessories are specifically designed for the HR 90 KE and ensure stable and tight-fitting installation.

Installation and Mounting

Installation is tool-free via the snap-clamp mounting, which is directly inserted into ducts with a nominal diameter of 100 mm. The grille cover provides a secure closure, and the lamellae prevent visibility into the interior of the fan. Installation typically takes place in horizontal or slightly inclined ducts, with airflow directed upwards.

Operational Advantages

The HR 90 KE offers high efficiency due to the optimized impeller and lifetime-lubricated ball bearings, enabling maintenance-free operation. The thermal overload protection safeguards the motor from damage, and the IP 45 protection class ensures safe use in moist environments. The tool-free mounting reduces installation time and labor effort. The fan is designed for continuous operation and is therefore suitable for continuous ventilation applications.