Metal window KLC 230 EU

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Product description
The VELUX electric 230 V top-hung roof window provides a wired 230 V solution for electrically operating top-hung roof windows and for the integrated control of roller blinds. Designed for wired integration into building automation systems, it features electric mounts and connection points for both the window and the blind.

Benefits for your customers

• Supplement price of €400 net compared with the manual top-hung roof window (price shown on a net basis).
• Integrated rain sensor protects the window in wet conditions.
• Straightforward integration into building automation systems.
• Connection for window and blind via a 6-core cable (two conductors per window and two per blind).

Advantages for installers / specifiers

• Rain sensor supplied as standard (possible to replace with a third-party rain sensor where required).
• Simple functional check using the reusable test kit ZZZ 275.
• Easy installation: window mounted as standard; blind connects directly to the window motor.

Available variants and sizes
An overview PDF lists all available variants and sizes of the 230 V top-hung roof window (summary of product benefits and variant descriptions included).

Wiring and electrical installation
Two conductors are provided for the window (open/close) and two for the blind (up/down). Each conductor is color-coded as indicated on the rating plate/label and in the wiring diagram.

• The function of an input is defined by the applied 230 V supply: if only the window is supplied with 230 V, only the window responds to control signals.
• If both window and blind are connected simultaneously, both devices respond to commands over the control cable; each device must be connected to its own switch.
• Window and exterior blind each have two wires that must be connected to a relay in a switch (one switch per device). Unused conductors must be safely isolated.

Test kit and accessories
An optional reusable test kit (ZZZ 275) is available to verify the function of the 230 V electric roof windows after installation. For installation on an existing manually operated top-hung roof window, the optional power supply KLC 230 is available (enables 230 V connection; use only when an electric blind is to be operated on a manual top-hung window; availability depends on window size).

FAQ – Selected questions & answers

• Can I connect an electric blind to the 230 V electric roof window? — It is recommended not to connect electric blinds directly to 230 V windows for control signal purposes; the blind is operated via the supplied wall switch.
• How do I connect a blind to the 230 V electric roof window? — On 230 V electric windows, blinds are connected via the connection box using the two blind conductors; the blind is powered via the window's mains cable, which supplies the blind through the integrated power supply.
• Must the original VELUX rain sensor be used or can a third-party sensor be fitted? — Use of the original VELUX rain sensor is recommended; however, it is possible to remove it and use a rain sensor from an external building management system.
• Can the roof window be left open in the rain? — Yes. The rain sensor override feature remains available: pressing the 'open window' button twice within 3 seconds keeps the window half-open for 15 minutes.

Technical specifications

• Product: VELUX electric top-hung roof window (wired 230 V solution).
• Supplement price vs manual top-hung window: €400 net.
• Rain sensor: integrated as standard (can be replaced by third-party solutions).
• Cable/connection: 6-core cable for connection of window and blind (2 conductors per product).
• Conductor function: 2 conductors for window (open/close), 2 for blind (up/down); color-coded.
• Test kit: ZZZ 275 (reusable) for post-installation functional test.
• Optional PSU for manual windows: KLC 230 (to operate an electric blind on a manual top-hung window; availability depends on window size).
• Integration: Suitable for building automation integration; control signals and connection concept for window and blind are provided.