What are the safety precautions for using the Velux KFX 210 control system?

The control system must be installed and used by persons aged 8 years and above with sufficient experience and knowledge. Cleaning and user maintenance should not be carried out unsupervised by children, who also must not play with it.

How do I test the Velux KFX 210 after installation or service work?

The control system must be tested after installation, service work, and alterations to ensure compliance with national regulations. It should also undergo an inspection by qualified personnel at least once a year.

What happens if there is a fire alarm while the backup batteries in Velux KFX 210 are being used?

If power fails, back-up batteries ensure emergency power supply for 72 hours. Any alarms will activate during this period when connected windows open automatically.

How do I install smoke detectors with the KFX 210 control system?

Smoke detectors like model KFA 100 should be installed on ceilings according to national legislation and snapped into place after fitting the base. Each control unit can connect up to ten detector units.

What steps are needed for maintenance of Velux KFX 210?

Maintenance includes checking battery status yearly, replacing batteries at least every four years, and inspecting connected products according to their instructions during the yearly inspection.

What are maximum cable lengths for motor terminals of Velux KFX 210?

For connection of smoke ventilation windows GGL/GGU-K-- ----40, the table on page 15 provides specific maximum lengths and prescribed cross-sectional sizes of cables depending on conductor count.

How do I connect rain sensors to the Velux KFX control system?

A rain sensor is connected via a 3-core cable up to a maximum length of 100 meters with a minimum cross-section of 0.5 mm2, following instructions included.

How do I reset alarms on the Velux KFX series control units?

When an alarm is triggered, pressing and holding the right button for at least five seconds resets it, turning off all related light-emitting diodes in affected components.

How do I connect two Velux KFX control units?

To link alarm signals between two KFC control units, use the ALARM terminal from one unit to connect with the FACU terminal in another. This setup allows for synchronized response during alarms.

Velux Kfx 210 — Manual, FAQ & Troubleshooting

Name: Velux Kfx 210
Brand: Velux

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KFX 210/211/212/213/214 KFC 210/220

![image 1](velux-kfx-210-loftsolutions_images/imageFile1.png)

SMOKE VENTILATION

For information on VELUX smoke ventilation, please contact your VELUX sales company: Tel. 01592 778 225 (UK), Tel. 01 848 8775 (IE)

Instructions for VELUX control system for smoke ventilation

ENGLISH

![image 2](velux-kfx-210-loftsolutions_images/imageFile2.png)

VAS 453812-2016-01

######## Contents

Important information 4-5 Contents of packaging 6-7 Overview of printed circuit board 8-9 Break-glass point KFK 100 10 Smoke detector KFA 100 11 Rain sensor KLA 200 12 Ventilation switch KFK 200 13 Motor terminals 14 Wiring 15 Setting of switches 16 Operation of and signals from control unit 17 Back-up batteries 18 Mains connection 19 Status and error indication in control system 20-22 Connected control units 23-28

- Transmit alarm from one control unit KFC to another 23

- Receive and transmit error indications from one control unit KFC to another 24

- Ventilation switch 25

- Rain sensor 26

- Receive alarm from a primary, external control system 27

- Transmit alarms or error indications to other external equipment 28

Replacement of frame in control unit 30 Technical data 31

Please read instructions carefully before proceeding and keep them for future reference behind the battery holder inside the control unit.

########### Safety

• Control system for smoke ventilation KFX 210/211/212/213/214 and control unit for smoke ventilation KFC 210/220 can be used by persons (aged 8 years and above) with sufficient experience and knowledge if they have been given instruction concerning their safe use and understand the hazards involved. Cleaning and user maintenance must not be made by unsupervised children.

• Children must not play with the control system.

• The installer must instruct the owner in the function of the control system including resetting of alarms and position of data plate and instructions.

• The data plate is placed in the control unit.

• When resetting alarms, be sure not to touch conductive parts and make sure that no body parts can get caught in the window when reactivated.

• WARNING! Make sure to use ESD protection when touching the printed circuit board for example during installation and service.

########### Product

• The control system has been designed for use with genuine VELUX products. Connection to other products may cause damage or malfunction.

• The control system is in conformity with the Low Voltage Directive and the EMC Directive for use in household, trade, industry and light industry.

• When installed, the control system complies with protection degree IP 42.

• The control system can operate smoke ventilation windows with a total power consumption of 10 A (KFC 210) and 2 x 10 A (KFC 220) respectively.

• Electrical products must be disposed of in conformity with national regulations for electronic waste and not with household waste.

• Used batteries must not be disposed of together with household waste but have to be disposed of in conformity with the relevant national environmental regulations. Batteries contain substances that can be harmful if not handled and recycled correctly.

• Use local authority battery disposal point where available.

• The packaging can be disposed of with usual household waste. Installation

• Installation must be carried out by a certified person in accordance with current national regulations.

• The control system must be connected directly to the mains supply in accordance with national regulations. Ensure that the mains supply cannot be disconnected unintentionally. It is recommended that disconnection is only possible using the mains switch or a key switch. At least one of these means for disconnection must be incorporated in the fixed wiring in accordance with national wiring requirements.

########### Maintenance and service

• Disconnect mains supply and back-up batteries before carrying out any maintenance or service work to the control system and ensure that they cannot be reconnected unintentionally during this time.

• The control system must be tested after installation, service work and alterations to the system. It must be inspected by qualified personnel at least once a year. Tests and inspections must be documented in accordance with national regulations.

• At the yearly inspection, the connected products must be checked according to their instructions.

• The printed circuit board monitors the time between inspection periods. If more than 15 months have passed since the last inspection, the yellow light-emitting diode is on and an acoustic alarm sounds.

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Switch 2

Switch 3

Switch 4

ONONONON

4444333322221111

SETUPSETUPSETUPSETUPSETUPSETUPSETUPSETUP

ONONONON

4444333322221111

Cable errors are indicated by the yellow light-emitting diode that flashes on and off and an acoustic alarm from control unit and connected break-glass points. (Factory setting). Cable errors are indicated by the red light-emitting diode and an acoustic alarm from control unit and connected break-glass points, and windows open.

No external fire alarm is connected to FACU terminal (FACU = Fire Alarm Control Unit). (Factory setting).

An external fire alarm is connected to FACU terminal and the cable connection is monitored.

If an alarm is activated via a smoke detector, the window opens fully. (Factory setting).

If an alarm is activated via a smoke detector, all windows that are open (in comfort ventilation position) close. Note: If an alarm is activated via a break-glass point, all windows open.

Automatic, time controlled closing of comfort ventilation is off. (Factory setting).

Automatic, time controlled closing of comfort ventilation is on. The time is set by means of the timer "AUTO CLOSE TIME", see section Ventilation switch KFK 200.

######## Operation of and signals from control unit

Break-glass point In case of fire: Break the glass cover and press the red button. All windows connected to the control system open. The red light-emitting diode over the red button in the control unit is on and an acoustic alarm sounds. All ventilation and rain sensor functions are disengaged.

########## Yellow light-emitting diode

In case of system errors, the yellow light-emitting diode flashes on and off and an acoustic alarm sounds. Error indication occurs, if cables for motors, break-glass points or smoke detectors are interrupted or shortcircuited, or if the batteries are defective. If additional break-glass points are connected, the corresponding diodes in these will also flash on and off and an acoustic alarm sounds.

Additional information on error causes can be seen on the printed circuit board in the control unit. See section Status and error indications in control system.

########## Green light-emitting diode

Under normal operation conditions, the green lightemitting diode in the control unit is on. All other lightemitting diodes are off. If additional break-glass points are connected, the corresponding diodes in these will also be on.

| | | |---|---| | | | | | | | | |

Open Stop Close

Operating buttons for comfort ventilation A short press of the top ventilation button opens the window to max comfort ventilation position. A short press of the bottom ventilation button closes the window completely. By pressing and holding the top or bottom ventilation button, the window opens/closes until the button is released. By pressing the stop button or by pressing the top and bottom buttons simultaneously, the window stops.

By means of the timers in the control unit it is possible to set the duration of the opening when the window is opened for comfort ventilation and set automatic closing of the window. See section Ventilation switch KFK 200. NB: If a rain sensor is fitted, the comfort ventilation function will automatically be blocked if rain is detected.

######## Back-up batteries

LINK FACU 2121PENL

BREAK GLASS POINTRAINRAIN INCOMFORTSMOKERAIN OUTERRORALARMMOTOR 2MOTOR 1230V/50Hz

65432132132121132+–2132132132541

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MAINTENANCE BATTERY

230V

RESET

FUSE:

ERROR-MOTOR 1 ERROR-MOTOR 2 ERROR-SMOKE DET. ERROR-BREAK GLASS

NL

RESET

+ – 24V 24V

ERROR-TEMP. FUSE

ALARM ACTIVE

BATTERY

########## BATTERY

The printed circuit board monitors the status of the back-up batteries. If the control unit is supplied with power from the back-up batteries, the yellow light-emitting diode flashes on and off showing that the 230 V mains supply is interrupted.

If the batteries are not connected or defective, the yellow light-emitting diode is on permanently showing that the batteries should be connected or replaced. This is also the case if the 25 A fuse is defective. In all three cases, an acoustic alarm sounds.

Note: If the back-up batteries are heavily discharged, the yellow lightemitting diode flashes on and off and the green OPERATION diode on the circuit board is on until the batteries are fully charged.

Note: The battery circuit is measured at start-up. It can take up to

5 minutes before the battery circuit has measured the battery voltage and before the printed circuit board indicates battery fault. The yellow light-emitting diode for battery is on.

########## ERROR - MOTOR 1

The printed circuit board monitors for defects in the cable from motor

terminal 1 (used in control units KFC 210 and KFC 220).

If the cable is interrupted, the yellow light-emitting diode flashes on and off. If the cable is short-circuited, the yellow light-emitting diode is on permanently. The error is also indicated in the integrated break-glass point and possible additional break-glass points. ERROR - MOTOR 2

The printed circuit board monitors for defects in the cable from motor

terminal 2 (used in control unit KFC 220 only).

If the cable is interrupted, the yellow light-emitting diode flashes on and off. If the cable is short-circuited, the yellow light-emitting diode is on permanently. The error is also indicated in the integrated break-glass point and possible additional break-glass points.

ERROR - SMOKE DETECTOR The printed circuit board monitors for defects in the cable to any smoke detectors that are connected. If the cable to the connected smoke detector(s) is interrupted, the yellow light-emitting diode flashes on and off. If the cable is short-circuited, the yellow light-emitting diode is on permanently. The error is also indicated in the integrated break-glass point and possible additional break-glass points.

ERROR - BREAK-GLASS POINT The printed circuit board monitors for defects in the cable to any breakglass points that are connected. If the cable to the connected break-glass point(s) is interrupted, the yellow light-emitting diode flashes on and off. If the cable is short-circuited, the yellow light-emitting diode is on permanently. The error is also indicated in the integrated break-glass point and possible additional break-glass points.

ERROR - TEMP. FUSE The printed circuit board monitors the temperature in the control unit. If the temperature in the control unit rises above 70 ˚C, the temperature fuse on the printed circuit board is activated and all connected windows open for smoke ventilation. The yellow light-emitting diode is on permanently until the printed circuit board has been replaced. After replacing the printed circuit board, the installation must be service tested thoroughly to ensure that the system works correctly. The error is also indicated in the integrated break-glass point and possible additional break-glass points.

ALARM - ACTIVE The red light-emitting diode on the front of the control unit is on permanently when the smoke ventilation function has been activated (from break-glass point, smoke detector or external fire alarm). The alarm can be reset by pressing the button at the right. After this, the light-emitting diode on the printed circuit board and in all breakglass points are turned off.

########## ERROR - COMFORT VENTILATION

After an alarm or a power failure, it will take at least 2 minutes before the comfort ventilation can be activated again.

DET.2121PENL

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