Rectangular backplate with curved fitting

The rectangular backplate with curved fitting by Sistem Air is a key component for connecting vacuum inlets to the piping network of a central vacuum system. Correct installation of the backplate is essential to ensure a stable and secure connection, maintaining vacuum throughout the system and guaranteeing optimal performance.

The curved fitting is designed to adapt to any type of wall, with a depth of 7 cm, making it ideal even in confined spaces without compromising functionality.

Backplate fixing

Backplate fixing is an operation that requires precision to avoid problems during the installation of the vacuum inlet. The backplate must always be mounted flush with the plaster to ensure correct alignment and a perfect seal. The backplates are designed for easy installation on both masonry and plasterboard walls, using dedicated fixing holes on the frame.

Wall and plasterboard installation

The backplate can be installed on solid walls or plasterboard. Below are the recommended installation methods:

Wall installation	Plasterboard installation
Fixing into masonry requires precision so that, during the subsequent installation of the vacuum inlet, the sealing elements engage perfectly. The backplate box must always be installed flush with the plaster.	Using the fixing holes on the mounting frame, the backplates can be installed on plasterboard walls. The backplate box must always be installed flush with the plaster.

Distinctive features

The rectangular backplates can be located even when covered by plaster, using a standard metal detector – a practical advantage during renovation or maintenance work.

Solutions for wall surface irregularities

In some situations, the wall surface may have irregularities that prevent the backplate from adhering perfectly to the wall. In these cases, it is possible to use extension components to correct the installation without having to restore the entire wall.

Recess up to 7 mm	Recess up to 12 mm	Recess over 12 mm	Restoring the vacuum inlet support point
When the backplate is recessed by up to 7 mm from the plaster surface, no correction is required.	For recesses up to 12 mm: shorten the vacuum inlet, move the O-ring inwards and use the extension Art. 1457.1.	For recesses over 12 mm: use the same inlet extension Art. 1457.1 and trim it as required.	When it is necessary to restore the vacuum inlet support point on the wall, due to irregular plaster or an extended wall chase that prevents correct fixing, use the extension kit (Art. 1450.8). This makes it possible to extend the recessed box in 1 cm increments with no length limit.

The rectangular backplate with curved fitting by Sistem Air is the ideal solution for those who want a safe and efficient central vacuum installation. Thanks to its innovative design, easy fixing and the availability of accessories to compensate for wall irregularities, it is a perfect choice for any type of project. Whether in residential or commercial environments, this backplate ensures optimal performance and ease of use.