ABB i-bus KNX Yucus YUB/U1.0.1 Series Technical Reference Manual page 163

KNX Technical Reference Manual
ABB i-Bus ® KNX Yucus
Note: The following parameters will only be available when the "Auto mode" is
activated. This parameter is used to specify the 1Byte value corresponding to the auto
mode. Due to the different brands of the connected VRV air conditioner-KNX protocol
gateway, the 1Byte value corresponding to the auto mode will be different. Please refer
to the actual VRV air conditioner gateway protocol used. Request to set the
corresponding value.
If the auto mode value specified by this parameter does not match the auto mode value
corresponding to the actual VRV air conditioning gateway protocol, the VRV interface
cannot control the automatic mode of the VRV air conditioning.
Note: Air conditioning mode switching logic: There is a difference between the
master control panel and the slave panel in the VRV system. The master control panel
can switch between cooling and heating modes. The slave panel can only switch between
dehumidification, air supply, auto mode and either one "cooling or heating" mode. For
example, if the main panel have selected cooling mode, the slave panel can only switch
between the following four modes: cooling, dehumidification, fan only mode and auto
mode. In addition, dehumidification is not supported in heating mode. The mode switching
logic of the Peonia panel is the same as the slave panel in the VRV system.
Note: The code number of various operating mode cannot be the same.
12.36.9 Fan – Fan speed levels
Options
This parameter is used to define the level of fan speeds that can be controlled in the VRV
mode. The level of fan speeds has to be the same as what is being define by the VRV air
conditioner system.
If the level of fan speeds specified by this parameter does not match the level of fan
speeds define by the VRV air conditioner system, this would result in not being able to
have full control of the VRV air conditioner system fan speeds.
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