33
Ultra
1.54
Comfortable indoor climate in high-end interiors
Installation and operating instructions
10.3.3.2 KaControl recirculation air module type ...33C1/34C1
The KaControl recirculation air module offers the option of controlling
the fan motor and value actuator either via a 0-10 V DC signal or via
the KaControl system. The type of control is set by 6 DIP switches on the
KathermBoard as per the applicable wiring diagram and selected system
configuration.
Please refer to the KaControl installation instructions for unit heater I438 for
information on the KaControl system.
The fan and the KaControl recirculation air module can be disconnected
from the mains power supply via the integral master switch.
All additional electrical components are not disconnected from the mains
power supply by the master switch!
0-10 V DC control signal
The 0-10 V DC control signal at input terminals AI2 and GND (Ri = 20
kOhm) on the KathermBoard is interpreted as per Table 9 with regard to
speed and valve control.
A maximum limit can be set via the potentiometer on the KathermBoard.
Maximum permissible cable length for the 0-10 V DC control signal is 20 m.
Use a shielded cable e.g. J-Y(St)Y, 0.8 mm.
Output terminals V1 and GND are available on the KathermBoard to control
a 24 V DC Open/Close actuator. Maximum permissible load 0.5 A
A wet fault message 24 V DC. max. 0.5 A is available at terminals V2 and
GND after appropriate parametrisation with an additional KaController unit.
This is signalled to the KaControl system in the event of a fan fault only with
models 96 and 97.
DIP switches and KathermBoard
potentiometer
Control signal
Function
0 – 3 V
Unit OFF
3 – 9 V
Valve Open
4 – 9 V
Min. fan speed
... 100%
Table 9
Ultra with KaControl recirculation
air module
KaControl module
298593
647752
650097