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KNX K

KNX Heating/Cooling Actuators

The KNX K actuators have got internal temperature controllers and output channels for controlling heating or cooling systems. The temperature controllers can control both the outputs on the KNX K and other climate control system on the KNX Bus.
In automatic mode, the temperature controllers are set at nominal temperatures for different modes. This way, it is easy to switch between the modes, comfort, standby, eco and building protection. The switch is made via an object e. g. via a manual switch, time switch or sensor switch outputs in the KNX-System.
The buttons on the device allow for direct manual switching of the connected systems. LEDs show whether the output channel was manually operated or is running in an automatic mode.

Models:

N° 70320 KNX K4, 4 outputs
N° 70321 KNX K8, 8 outputs


  • KNX K4 and KNX K8 KNX K4 and KNX K8
  • KNX K4 (70320) KNX K4 (70320)
  • KNX K8 (70321) KNX K8 (70321)

KNX 4:

  • 4 internal, independent temperature regulators with automatic controls for the heating and cooling controls (one/two step heating and cooling)
  • 4 output channels (230 V AC, 8 Watt per output) with pulse width modulation control (PWM) for actuators
  • Keypad field 4 buttons and status LEDs

KNX 8:

  • 8 internal, independent temperature regulators with automatic controls for the heating and cooling controls (one or two step heating and cooling)
  • 8 output channels (230 V AC, 8 Watt per output) with pulse width modulation control (PWM) for actuators
  • Keypad field 8 buttons and status LEDs


Configuration is made using the KNX software ETS

Housing Plastic
Colour White
Mounting Series installation on mounting rail
Protection category IP 20
Ambient temperature Operation -20…+70°C, storage -55…+90°C
Ambient humidity max. 95% RH, avoid condensation
Power on bus: 10 mA
Data output KNX +/- bus connector terminal

KNX K4

Dimensions approx. 53 x 88 x 60 (W x H x D, mm), 3 modules
Weight approx. 110 g
Operating voltage KNX bus voltage
Outputs 4 x 230 V (OUT/N), not short-circuit-proof.
When connectiong one consumer load per separate channel (1 to 4):
Max. load for continuous operation: 8 W per channel
Max. switch-on current: 1.1 A per channel
Observe the specifications in the data sheet of the consumer load.
Communication objects 125

KNX K8

Dimensions approx. 107 x 88 x 60 (W x H x D, mm), 6 modules
Weight approx. 270 g
Operating voltage 230V AC, 50 Hz
Power consumption max. 2 W
Outputs 8 x 230 V (OUT/N), not short-circuit-proof.
When connectiong one consumer load per separate channel
(1 to 8):
Max. load for continuous operation: 8 W per channel
Max. switch-on current: 1.1 A per channel
Observe the specifications in the data sheet of the consumer load.
Communication objects 249
made in germany