Description And Technical Data; Intended Use - DBK DN125 Instructions De Montage Et D'utilisation

Description and technical data

2. Description and technical data
The duct heater essentially consists of an insulated PTC heat register that is built into a
plastic housing.
The heat register is wired internally with an electronic unit that enables activation of
the heating circuit.
An automatically returning temperature limiter is also built-in. The trigger temperature
is not the equivalent of the maximum surface temperature of the heater (especially the
heating element).
Technical key data:
DBK ID
Name
Max. power P
max
Differential pressure ∆p
Max. activation current I
Nominal voltage U
Standby current I
Control voltage U
Connection diameter
Outside dimension
Temperature limiter
* 10 °C; 150 m³/h; U
** 20 °C; 150 m³/h
*** 0 VDC = 0% power; 10 VDC = 100% power

3. Intended use

The duct heater is specified for installation in a ventilation system. In mutual operation,
it enables outside air to be heated to a desired target temperature. The max. target
temperature is limited by the max. heating power of the duct heater and depending on
the supplied air temperature and amount. The max. power may be set via the applied
control signal (0 – 10 VDC). Controls follow via the ventilation system that the device is
built into. The customer must ensure that the supplied air does not contain any rough
contaminants that could block the built-in heat register or permanently foul it/cover it.
Operation in a particle/dust-free environment or use of a suitable air filter in front of
the duct heater is recommended. An air volume flow of at least 40 m³/h must be
ensured in the application at all times.
14 | Assembly and Operating Manual | DBK Duct Heater PTC – DN125
DN125 18/22 230 VAC
*
**
E
N
Standby
***
Control
= 10 VDC; homogeneous flow
Control
010001653-SE01
850 W (+5/-10%)
25 Pa
7 A
DN125 (female)
232 x 152 x 165 mm (H x W x D)
T = 60 °C ± 5 K, T
Open
010001654-SE01
DN125 26/22 230 VAC
1200 W (+5/-10%)
230 VAC
5 mA
0 – 10 VDC
= 30 °C ± 15 K
Reset
36 Pa
9 A
Rev. a 06/2020