Roof-mounted radial fan Ø160 for air extraction from a ventilation duct

Roof fan for air exhaust from a ventilation duct

The roof fan is designed for mechanical exhaust of stale air from a ventilation duct on the roof. It is suitable for residential buildings, public buildings, sports facilities, and commercial and retail premises.

Main advantages

• Air exhaust on the roof – the fan is installed on top of the ventilation duct and extracts air from the building.
• 160 mm connection – the round connection spigot allows connection to a duct of the appropriate diameter.
• Single-phase motor – the motor is designed for continuous operation and has ball bearings.
• IPX4 protection – the design is suitable for outdoor installation, provided that correct connection and sealing are ensured.
• Simple control – switching on and off is done with an external switch; installation of an external speed controller is also possible.
• Robust design – the rain cap and mounting base are made of painted galvanized sheet steel, while the internal part is made of polymer materials.

Operation and installation

The fan operates at one speed and is switched on and off with an external switch in the electrical installation. According to the manufacturer’s instructions, an external speed controller, which is not included, can also be installed.

Installation is vertical, with the rain cap at the top. The square mounting base with four fixing holes must be firmly fixed to the flat top of the ventilation duct or upstand on the roof, and the round connection spigot inserted into the duct. The joint between the duct and the fan must be sealed to prevent water from entering the duct. On a pitched roof, the fan requires a level upstand. The connection cable is not included; an additional cable for outdoor use is required, suitable for permanent connection to the electrical installation. The installation must include an all-pole switch with a contact gap of at least 3 mm, and the cable gland in the terminal box must be sealed with silicone. Connection should be carried out by a qualified electrician.

Technical specifications

Maintenance

The fan does not require frequent maintenance. The impeller can be removed and cleaned with a damp cloth, but the motor must not be wetted. Switch off the power supply before cleaning, and inspect the motor at least every two years.

Frequently asked questions

Is the fan switched on with a built-in switch?

No. It is switched on and off with an external switch in the electrical installation.

Is the fan suitable for chimneys of heating appliances?

No. The fan is not intended for chimneys of heating appliances, such as boilers, stoves or fireplaces.

Is the connection cable included?

No. The connection cable is not included, so an additional cable for outdoor use must be used.

Conclusion

The roof fan is designed for reliable air exhaust from a ventilation duct on the roof. Due to its technical characteristics and the possibility of correct outdoor installation, it is suitable for various types of buildings.