Velux KFX 210 User manual

VAS 453812-2015-01
KFX 210/211/212/213/214
KFC 210/220
For information on VELUX smokeventilation, please contact your VELUX sales company:
Tel. [phone] (UK),Tel. [phone] (IE)
SMOKE
VENTILATION
25-09-2014 07:44:14
Instructions for VELUX control
system for smoke ventilation
ENGLISH

2 VELUX®VELUX®3
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
Contents

4 VELUX®VELUX®5
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 prod-
ucts. 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 regula-
tions 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 environ-
mental 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 accord-
ance 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 accord-
ing to their instructions.
• The batteries must be checked at the yearly inspection. If the performance
of the batteries is below 50%, they must be replaced. The batteries must
be replaced at least every fourth year.
• If you have any technical questions, please contact your VELUX sales
company, see telephone list or www.velux.com.
Declaration of Conformity
According to the Council Directive 2014/35/EU
We herewith declare that the VELUX control systems for smoke ventilation
KFX 210 (control unit 3FC F21, smoke detector KFA 100/3FA F01 and
break-glass point KFK 100/3FK F00),
KFX 211 (control unit 3FC F21, smoke detector KFA 100/3FA F01 and
break-glass point KFK 101/3FK F01),
KFX 212 (control unit 3FC F21, smoke detector KFA 100/3FA F01 and
break-glass point KFK 102/3FK F02),
KFX 213 (control unit 3FC F21, smoke detector KFA 100/3FA F01 and
break-glass point KFK 103/3FK F03),
KFX 214 (control unit 3FC F21, smoke detector KFA 100/3FA F01 and
break-glass point KFK 104/3FK F04) and
VELUX control units for smoke ventilation KFC 210 (3FC F21) and
KFC 220 (3FC F22)
− are in conformity with the provisions of Low Voltage Directive
2014/35/EU and EMC Directive 2014/30/EU as amended and
− have been manufactured in accordance with the harmonised standards
EN 61000-3-2(2006)+A1(2009)+A2(2009), EN 61000-3-3(2008),
EN 55014-1(2006)+A1(2009)+A2(2011), EN 50130-4(2011),
EN 60335-1 and EN 62233.
When one of the above-mentioned VELUX control systems or VELUX control
units are connected to a VELUX smoke ventilation window GGL -K-- ----40,
GGU -K-- ----40 or CSP, the total system is to be considered as a machine,
which is not to be put into service until it has been installed according to
instructions and requirements.
The total system then complies with the essential requirements of the
Council Directives 2014/35/EU, 2014/30/EU and 2006/42/EC as amended.
The control systems and control units also comply with the Construction
Products Regulation (EU) No. 305/2011. For Declaration of Performance,
please go to www.velux.com.
Important information Important information
VELUX A/S: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Jens Aksel Thomsen, Test Engineer, Market Approval)
Ådalsvej 99, DK-2970 Hørsholm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CE DoC 940402-01
15-02-2015

6 VELUX®VELUX®7
9 10 11
x 10
EXTRACTOR DE HUMOR
RØGLEM
ROO
SMOKE VENT
ABV-CENTRAL
ESCAP
3
2
1
x 4
7
8
4
5
6
1Control unit for smoke ventila-
tion KFC 210 or KFC 220 – see
type designation in the control
unit.
2Frame with instructions
3Keys, rubber bushes, screws
and cable ties
4Labels
5Back-up batteries
6Battery holder
7Cables for batteries
8Blank lid
9Break-glass point
KFK 100-104*)
10 Smoke detector KFA 100*)
11 Coloured frame*)
*) Is delivered depending on type
of control system.
Keep the instructions behind the battery holder in the control unit.
Stick the supplied label "SMOKE VENTILATION" onto the indicated area
on the control unit.
Contents of packaging

8 VELUX®VELUX®9
J1
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
BATTERY
DE T.21DE T.21
NL
NL
PENL
230V
230V
ERROR-MOTOR 1
ERROR-MOTOR 2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP. FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP. FUSE
TIME
AUTO CLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARM
FUSE: 25A
MOTOR 2MOTOR 1230V/50Hz
+ –
24V 24V
1
ON
2 3 4
H I
M M
230 V
50 Hz
BA C
D E F G
J K L M
P QO R SN
AMains connection 19
BMotor 1 14-15
CMotor 2 14-15
DSmoke detector 11
ERain sensor 12
FVentilation switch 13, 25
GBreak-glass point 10
HAlarm signals 23-24, 27-28
ILink 24
JRain signal - output 26
KRain signal - input 26
LFACU terminals 23, 27
MError indication 28
NBatteries 18
OComfort opening time 13
PAuto close time 13
QTemperature fuse 22
RStatus indications 20-22
SSetting 16
Overview of printed circuit board

10 VELUX®VELUX®11
5
6J1
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
654321
BREAK GLASS POINT
T
J1
6 7 8 954321
21
SMOKE
L1 in
L1 out L2
21
SMOKE
L1 in
L2
L2
L1 in
L1 out
L1 out
Up to 10 break-glass points can be connected
to each control system.
Installation
Break-glass points KFK 100/101/102/103/104
are surface mounted and should be connected in
accordance with current national legislation. The
installation surface must be smooth and level.
Connection
The break-glass point is connected to the
control unit by means of a 6-core cable with a
minimum cross-section of 0.5 mm2. This cable
can be up to 100 m long.
Break-glass points KFK 100/101/102/103/104
must be installed in continuous single line con-
nections to ensure that the complete line from
the control unit to the last break-glass point
is monitored. Individual connection to more
than one break-glass point does not allow for
monitoring.
The first additional break-glass point must be
connected to the terminals in the control unit.
When connecting, lead cable through the rub-
ber membrane and fasten with cable tie.
Up to 10 smoke detectors can be connected to
each control system.
Installation
Smoke detector KFA 100 should always be
fitted on the ceiling in accordance with current
national legislation. After fitting the base, the
smoke detector can be snapped into place.
Position dust cover over the smoke detector
until it is ready for operation.
Connection
The smoke detector is connected to the control
unit by means of a 2-core cable with a mini-
mum cross-section of 0.5 mm2. This cable can
be up to 100 m long.
Smoke detectors KFA 100 must be installed
in continuous single line connections to ensure
that the complete line from the control unit
to the last detector is monitored. Individual
connection to more than one break-glass point
does not allow for monitoring.
When connecting, lead cable through the rub-
ber membrane and fasten with cable tie.
Terminal module J1 (jumper)
Terminal module J1 in the control unit must be
moved to the last or only break-glass point – ie
to the break-glass point placed farthest away
from the control unit. Terminal module J1 in
other break-glass points must be removed.
Colour of frame for break-glass point in
control unit
The white frame can be replaced by the
coloured frame supplied (applies to KFX 211,
212, 213 and 214 and KFC 210 and 220). See
page 30.
Terminal module in control system
The terminal module in the control unit must be
moved to the last or only smoke detector – ie to
the smoke detector placed farthest away from
the control unit.
Break-glass point
KFK 100
Smoke detector
KFA 100

12 VELUX®VELUX®13
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
TEMP
TIME
AUTO CLOSE
TIME
OPENNIG
COMFORT
321
COMFORT
321
RAIN
Min Max
Up to 10 ventilation switches can be connected
to each control system.
The product can be purchased separately.
Connection
The ventilation switch is connected to the
control unit by means of a 3-core cable with a
minimum cross-section of 0.5 mm2. This cable
can be up to 100 m long.
Output 1: Open
Output 2: Close
Output 3: Common
The product can be purchased separately.
Connection
The rain sensor is connected to the control unit
by means of a 3-core cable with a minimum
cross-section of 0.5 mm2. This cable can be up
to 100 m long.
Note: If the rain sensor has been activated, ie
has closed the window due to rain, it will take
at least 2 minutes before the comfort ventila-
tion can be activated again.
When connecting, lead cable through the rub-
ber membrane and fasten with cable tie.
When connecting, lead cable through the rub-
ber membrane and fasten with cable tie.
Setting of timers
COMFORT OPENING TIME
The time taken for the window to open (in sec-
onds) can be set when the window is opened
for comfort ventilation purposes (factory set-
ting is about 14 seconds).
Note: The window must not be opened more
than 20 cm.
Min duration: 5 seconds
Max duration: 60 seconds
AUTO CLOSE TIME
Automatic closing of windows opened for
comfort ventilation purposes can also be set.
This function is only active if switch 4 is set in
position ON (see page 16).
Min opening time: 2 minutes
Max opening time: 60 minutes
Ventilation switch
KFK 200
Rain sensor
KLA 200

14 VELUX®VELUX®15
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
DE T.21
MOTOR 1
M
DE T.21
MOTOR 1
M
M
CSP
DE T.21DET.21
MOTOR 2MOTOR 1
DE T.21DET.21
MOTOR 2MOTOR 1
Electrical cables should be drawn according to regulations by qualified per-
sonnel. The control system and its cables should be installed in compliance
with current national legislation and the requirements of local authorities.
Maximum cable length/prescribed cross-sectional size of
cables
The maximum allowed cable lengths between control unit and motor and the
prescribed cross sectional sizes of the cables are given in the table below. The
cable must be protected according to National/European Standards.
Calculation of max. cable length: 56 x A/l
Ais cable cross-section and Iis max motor current in total.
Allowed maximum voltage drop in the cable: 2 V
Operation current: The total of all motor currents.
Cable cross-section per motor terminal for smoke ventilation window
GGL/GGU -K-- ----40
Cable cross-section per motor terminal for smoke ventilation window CSP
Each terminal is intended for 24 V DC and max 10 A.
Control unit KFC 210 (10 A)
In this example, only motor terminal 1is active.
Max 4smoke ventilation windows
GGL/GGU -K-- ----40
or
1smoke ventilation window CSP can be con-
nected to the control unit.
Control unit KFC 220 (2 x 10 A)
In this example, both motor terminals 1and 2are
active.
Max 8smoke ventilation windows
GGL/GGU -K-- ----40 (max 4 windows per motor
terminal)
or
2smoke ventilation windows CSP can be con-
nected to the control unit.
Terminal module
To ensure cable monitoring, the terminal module
in the control unit must be moved to the last con-
nection between smoke ventilation windows
GGL/GGU -K-- ----40 or CSP and the cables from
the control unit.
NB: In case motors operate in the wrong direc-
tion, transpose the two motor cables in the
terminal.
Motor terminals Wiring
Cable cross-
section
Max. cable length for
number of motors *)
1234
3 x 1.5 mm242 m 21 m 14 m 10 m
* 5 x 1.5 mm284 m 42 m 28 m 21 m
3 x 2.5 mm270 m 35 m 23 m 17 m
* 5 x 2.5 mm2140 m 70 m 46 m 35 m
3 x 4 mm2112 m 56 m 37 m 28 m
3 x 6 mm2168 m 84 m 56 m 42 m
Cable cross-
section
Max. cable length *)
3 x 1.5 mm28 m
* 5 x 1.5 mm217 m
3 x 2.5 mm214 m
* 5 x 2.5 mm228 m
3 x 4 mm222 m
3 x 6 mm233 m
*) 2x2 conductors in parallel
Only one smoke ventilation window CSP per motor
terminal
*) 2x2 conductors in parallel

16 VELUX®VELUX®17
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
4 4 4 43 3 332 22 211 1 1
ON ON ON ON
4 4 4 43 3 332 22 211 1 1
ON ON ON ON
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.
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.
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 short-
circuited, 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 light-
emitting diode in the control unit is on. All other light-
emitting 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.
Operation of and signals
from control unit
Setting of switches
SETUPSETUPSETUPSETUP SETUPSETUPSETUPSETUP
Switch 1
Switch 2
Switch 3
Switch 4

18 VELUX®VELUX®19
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
PENL
230V/50Hz
230 V
Remove cover plate over the terminals and
connect the cable.
Take all necessary actions to comply with
current local requirements (contact a qualified
electrician, if necessary).
The control unit has batteries that ensure emergency power supply
for 72 hours in case of power failure. Therefore, if there is a fire alarm
within these 72 hours, the windows will still be able to open.
Note: The batteries must be checked at the yearly inspection. If per-
formance of the batteries is below 50%, they must be replaced. The
batteries must be replaced at least every fourth year.
Note the replacement date.
In case of power failure, the comfort ventilation is interrupted automati-
cally, and all windows close after 2 minutes. Comfort ventilation is not
possible until the mains connection has been re-established.
Lead cable as shown and fasten it in cable
gland. For optimum fixing, the rubber bush
can be replaced by one of the rubber bushes
supplied.
Install battery holder.
Back-up batteries Mains connection

20 VELUX®VELUX®21
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
OPERATION
The printed circuit board monitors the present status of the control
system.
Normal operation condition of the control unit is indicated with a green
light emitting diode.
PSU1 OK
The printed circuit board monitors the present status of the power
supply for motor terminal 1 (used in control units KFC 210 and KFC 220).
The light-emitting diode indicates that the motor terminal is being
supplied with power from the integrated power supply.
If the 230 V mains supply to the control unit is interrupted, the printed
circuit board automatically switches to battery supply and the diode is
turned off.
PSU2 OK
The printed circuit board monitors the present status of the power
supply for motor terminal 2 (used in control units KFC 220 only).
The light-emitting diode indicates that the motor terminal is being
supplied with power from the integrated power supply.
If the 230 V mains supply to the control unit is interrupted, the printed
circuit board automatically switches to battery supply and the diode is
turned off.
RAIN SENSOR - INPUT
The printed circuit board monitors the present status of the rain sensor.
If the connected rain sensor detects rain, the yellow light-emitting diode
is on and any window opened for comfort ventilation closes. When the
rain has stopped, the yellow light-emitting diode is turned off and the
window can be opened for comfort ventilation again after two minutes.
MAINTENANCE
The printed circuit board monitors the time between inspection periods.
If more than 15 months have passed since the last inspection, the yel-
low light-emitting diode is on and an acoustic alarm sounds. During the
inspection, the system is reset by pressing the button at the right
for at least 5 seconds. After this, 15 months will pass before the light-
emitting diode comes on again, if the service time is exceeded. Exceeded
service intervals are also error indicated with a yellow light-emitting
diode in the integrated break-glass point and possible additional break-
glass points and an acoustic alarm.
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 light-
emitting diode flashes on and off and the green OPERATION diode on
the circuit board is on until the batteries are fully charged.
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 pos-
sible 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 pos-
sible 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 pos-
sible additional break-glass points.
Status and error indication
in control system
Status and error indication
in control system

22 VELUX®VELUX®23
32 541
ALARM
32 541
ALARM
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
+ –
FACU
+ –
FACU
24 V 24 V
0 V 0 V
ERROR - BREAK-GLASS POINT
The printed circuit board monitors for defects in the cable to any break-
glass points that are connected.
If the cable to the connected break-glass point(s) is interrupted, the yel-
low 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 pos-
sible 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 perma-
nently until the printed circuit board has been replaced. After replac-
ing 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 pos-
sible additional break-glass points.
ALARM - ACTIVE
The red light-emitting diode on the front of the control unit is on per-
manently 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 break-
glass points are turned off.
Transmit alarm from one KFC control unit to another
In installations with several connected control units, all smoke detectors
and additional break-glass points must be connected to control unit 1
only (see below). In the other control units, the glass plate on the front
face must be replaced by the blank lid provided. In case of an alarm, an
acoustic alarm sounds from all control units and all windows open.
Connection is established from the ALARM terminal in the principal con-
trol unit to the FACU terminal in the next control unit. If more than two
control units are linked, connect from the ALARM terminal in control
unit 2 to the FACU terminal in control unit 3 etc.
Note: In control unit 2 and possible additional control units, dip switch
no. 2 is set in position ON.
Status and error indication
in control system
Connected control units
Control unit 1 Control unit 2 Control unit 3

24 VELUX®VELUX®25
21
LINK
21
LINK
21
LINK
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
321
COMFORT
321
COMFORT
321
COMFORT
321
COMFORT
Receive and transmit error indications from one control unit
KFC to another
Up to 10 control units can be connected.
In the connection shown below, error indications in one control unit will
be registered and shown in all control units. Indication of the specific
error can be seen on the printed circuit board of the control unit where
the error has occured.
Connected control units
Control unit 1 Control unit 2 Control unit 3
Ventilation switch
Up to 10 ventilation switches KFK 200 can be connected to each control
system. Up to 10 control systems can be connected.
Note: Do not connect the control systems if you would like a local
ventilation switch.
Connected control units
Control unit 1
Control unit 1
Control unit 2
Control unit 2

26 VELUX®VELUX®27
21 321 3
RAIN INRAIN OUT
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
32121
1 32
+ –
21 321 3
FAC U RAINRAIN IN SMOKERAIN OUT ERROR
32 541
ALARM
+ –
FACU
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
24 V / 48 V
24 V
0 V
0 V
+ –
FACU
Rain sensor
The product can be purchased separately.
Connection
The rain sensor is connected to the control system by means of a 3-core
cable with a minimum cross-section of 0.5 mm2. This cable can be up to
100 m long.
NB: If the rain sensor has been activated, it will take at least 2 minutes
before the comfort ventilation can be activated again.
The example below shows a cable connection with several control
systems but only one rain sensor.
Connected control units
Control unit 1 Control unit 2
Receive alarm from a primary, external control system
In installations with several connected control systems, all smoke detec-
tors and additional break-glass points must be connected to the primary,
external control system according to the instructions supplied with
them. In this installation, control unit KFC is controlled by the primary,
external control system and the smoke ventilation function will be
activated, when an alarm is received from the primary, external control
system.
Connection is established by placing the cable from the primary control
system in the FACU-terminal in control unit KFC.
Note: Set dip switch no. 2 in position ON in the control unit.
To ensure monitoring of cables, one of the following descriptions must
be followed:
aIf the external control system has a 24 V DC or 48 V DC outlet which
is interrupted in case of fire,
bIf the external control system has one potential-free relay outlet only
which is interrupted in case of fire,
monitoring of cables is obtained by connecting 24 V DC or 48 V DC
through the relay.
Note: Do not overload the 24 V outlet with other additional connections.
ab
Fire Alarm
Control Unit
Connected control units

28 VELUX®VELUX®29
32 541
ALARM
J1
BATTERY
NL
NL
230V
230V
ERROR-MOTOR1
ERROR-MOTOR2
ERROR-SMOKE DET.
ERROR-BREAK GLASS
RAIN SENSOR INPUT
ALARM ACTIVE
ERROR-TEMP.FUSE
MAINTENANCE
BATTERY
PSU2 OK
PSU1 OK
OPERATION
RESET
SETUP
RESET
73˚C
TEMP.FUSE
TIME
AUTOCLOSE
TIME
OPENNIG
COMFORT
FRONT PANEL
FUSE:
25A
+ –
24V 24V
65432132132121
1 32
+ –
21 321 32132 541
LINK FACU
DET.21DET.21
PENL
BREAK GLASS POINTRAINRAIN IN COMFORTSMOKERAIN OUT ERRORALARMMOTOR2MOTOR1230V/50Hz
1 32
–
ERROR
No alarm No error Alarm Error Common Common
ab
Transmit alarms or error indications to other external
equipment
It is possible to transmit an alarm or an error indication to other external
equipment.
aAn alarm will be transmitted from the ALARM terminal where a
potential-free relay switches in case of alarm.
bError indications will be transmitted from the ERROR terminal where
a potential-free relay switches in case of alarm.
Connected control units

30 VELUX®VELUX®31
The white frame of the control unit can be replaced by the coloured
frame supplied (applies to KFX 211, 212, 213 and 214 only).
Remove white frame as shown.
Place glass from the white frame in the coloured frame.
Fit the coloured frame.
Primary voltage: 230 V AC/50 Hz (±10%)
Power consumption:
− KFC 210 max 250 W
− KFC 220 max 500 W
Secondary voltage: 24 V DC (21-26.4 V DC)
Ripple voltage: max 2 Vpp
Load max.:
− 10 A (KFC 210)
− 2 x 10 A (KFC 220)
− ED 10% per 10 minutes
Alarm and error relays: Contact rating 24 V DC, 1 A
Battery backup:
− 2 x 12 V/7.2 A h
− Expected battery lifetime: 4 years
Interruption time between mains supply and batteries: Max 2.5 sec
Fuses:
− Battery fuse 25 A
− Thermo fuse 73°C
Status LED in break-glass point:
− Green light, system OK
− Yellow light, error. For details, see page 15 and 18-20
− Red light, alarm active
Environmental class: 1
Operational temperature: -5°C to +40°C
IP rating: IP 42
Cabinet size for wall mounting: 398 x 393 x 127 mm (W x H x D)
Mounting hole size for flush mounting:
− 355 (±5) x 355 (±5) x 100 mm (W x H x D)
− Wall thickness min 10 mm
Weight KFC 210:
− Without batteries: 3.1 kg
− With batteries: 8.0 kg
Weight KFC 220:
− Without batteries: 3.7 kg
− With batteries: 8.6 kg
Cabinet colour: RAL 9016, white
Maintenance: Once a year or according to local requirements (service
timer 15 months)
Replacement of frame in control unit Technical data

INSTALLATION INSTRUCTIONS FOR KFX/KFC. ©2014, 2015 VELUX GROUP ®VELUX AND THE VELUX LOGO ARE REGISTERED TRADEMARKS USED UNDER LICENCE BY THE VELUX GROUP
AR: VELUX Argentina S.A.
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(010) 42.09.09
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02/955 99 30
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[phone]
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531 015 511
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01806 / 33 33 99
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Mobilfunk: max. 0,60 €/Anruf
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91 509 71 00
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0207 290 800
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0,119€ TTC/min
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045/6173666
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(85) 270 91 01
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030 - 6 629 629
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22 51 06 00
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0800 650 445
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(022) 33 77 000 / 33 77 070
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011 20 57 500
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042/20 83 80
SI: VELUX Slovenija d.o.o.
01 724 68 68
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(02) 33 000 555
TR: VELUX Çatı Pencereleri
Ticaret Limited Şirketi
0 216 302 54 10
UA: VELUX Ukraina TOV
[phone]
US: VELUX America Inc.
1-800-88-VELUX
www.velux.com