ABB i-bus KNX, Product Manual, Page: 83 / 264

ABB i-bus
®
KNX
Commissioning
FCA/S 1.x.x.1 | 2CDC508134D0202 81
Fan Coil operating mode: 2 control values / 2 valves
What does the option control value input "2 control values / 2 valves" mean?
Example: 2 valves and three-speed fan
Control value processing in the device
Output A Output B Output C Output D
Control value input
2 control values/2 valves

-

-

= Control value functions
- = Control value does not function
If the option 2 control values/2 valves is selected, the control values will operate directly on output C.
The function of the two fans EFG control values A and B is set in the application. In this example, "Number
of control value inputs" is parameterized to 2 and the reaction to "Largest value".
To ensure correct operation of the Fan Coil, the fan EFG control value A is connected with the control
value cooling and the fan EFG control value B with the control value heating.
Note
In the option 2 control values/2 valves (with or without switching object), one valve must be
parameterized as a heating valve and the other as a cooling valve, according to the installation
conditions.