Page 48 - Advanced Course

KNX ADVANCED COURSE

The areas of application of the control systems are as follows:

Table 7

Individual room control Heating systems without direct boiler Heating systems with boiler control
connection

Applications No intervention necessary in the For installations with mixing valves in the For installations with direct access to
heating system, only changing heating circuits without direct access to the the boiler via KNX
valve elements boiler via a KNX gateway

Principle Opening/closing of load circuits Mixing and control of load circuits, increase and Boiler control and mixing of load circuits
(rate regulation) reduction of flow temperature via analogue
and/or digital input signals
Cost reduction by decrease in Dependent on the room usage Considerable savings for installations with Large reduction as the complex
energy consumption (little use – more savings) storage capacity as only the required energy is installation is controlled at the optimum
taken from the tank and thus long operating level
No influence from the boiler
times
No heat requirement = boiler OFF
Cost of purchase Low Medium High

Device example Individual room thermostat, Central control unit or via analogue/digital Manufacturer-specific gateways for the
heating actuator + electrothermal inputs or outputs in a PLC e.g. with proprietary specific installation type
drive or electromotive drive sensor or sensor with KNX capability,
mixed circuit controller
(e.g. shutter actuator + mixing valve),
pump control
(e.g. switch actuator + pump)
0-10 V interface
(increase or reduce boiler temperature)

Home and Building Management Systems KNX Association
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