4. Accessories
External temperature sensor KF-2 (sleeve sensor) or BTF2-C47-0000 (surface-mounted
room sensor)
5. Technical data
Operating and switching voltage:
230VAC / 50Hz
Outputs:
Relay NO contact max. 5(1)A / 250V~, type 1.B,
analogue output 0-10V (SELV), max. 5mA for fan control
Step switch fan:
3-step switch 1.8V, 4V, 6V (factory setting),
each +/- 1.5V adjustable
Operating mode switch:
Standby (frost protection),manual fan operation,
Automatic fan operation
Control range:
22 … 30°C
Switching differential:
0.5K with temperature change of 4K/h
Proportional band fan:
adjustable 0.5...3K (factory setting 1.5K)
ECO temperature differential:
1 ... 6K (factory setting 2K) Sensor
Tolerance internal sensor:
approx. 1K
Frost protection temperature:
approx. 5°C
Switching differential
frost protection:
approx. +1K
Power consumption:
< 1W / < 2VA
Protection class:
II, nach entsprechender Montage
Degree of protection:
IP30, nach entsprechender Montage
Permissible ambient temperature:
0 … 40°C
Storage temperature:
-20 … 70°C
Permissible humidity:
max. 95%r.H. non-condensing
Mounting:
on wall or flush-mounted box Housing
Housing material and colour:
ABS plastic, pure white similar to RAL9010
Features:
Operating mode switch Off / Manual / Automatic,
3-stage fan switch, mechanical range limitation of the
setpoint adjuster, internal DIP switches for function
selection, three-colour backlit setting marker, side
button for activating and ending the parameter setting
Degree of contamination:
2
Rated impulse voltage:
4.000 V
Energy efficiency class:
I (contribution to seasonal room heating energy
efficiency 1%)
6. Sensor table (characteristic curve) for external sensors
The sensor table applies to the optional external temperature sensor. Sensor „2“ – NTC 47
Sensor temperature [°C]
Resistance value [kOhm]
-10
264,028
0
155,480
10
94,377
15
74,314
20
58,910
25
47,000
30
37,732
40
24,750
50
16,597
7. Connection and dimensional drawings / position drawing dip
switches S1 to S4
int.sensor
ext.sensor
electronics
ECO contact
antifreeze contact
S1
S2
NTC 47K
N
N
N
L
S1-4
Supply
+
-
Safety extra low voltage (SELV)
turn-off delay
S4
NC
C
NC
NC
no turn-off delay
Attention!
If the external
contact input at
terminals 13 and 14
is not the terminals
must be connected
with a wire jumper.
(jumper is set in the
asdelivered state)
Attention!
Partition
wall for safe
separation between
mains voltage and
protective low voltage
mount accordingly.
Switch S1 - S4
Switches
ON
OFF
S1
Contact terminal 13 and
14 Function ECO
Contact terminal 13 and 14
Function OFF (frost protection)
see point 2.5
S2
Fan off when
output inactive
Fan switch-off delay
10 minutes
see point 2.4
S4
Internal sensor
Terminals 7 and 8
external sensor
see point 2.3
8. Warranty
The specified technical data were determined by us in a suitable test environment (we will
provide information on this on request) and only represent the agreed quality on this basis.
The client/customer is responsible for checking the suitability for the purpose intended by
the client/customer or the use under the specific conditions of use; we do not assume any
warranty for this. Subject to change without notice.
