Data Sheet for Product

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Siemens RDF880KN… A6V11282546_en--_e
Smart Infrastructure Touch Screen Flush-mount Room Thermostats with KNX Communications 2021-02-26
VRF Application (HMI only)
For the VRF application, RDF880KN... provides an easy-to-understand HMI for
adjusting frequent used operations of the VRF systems such as adjustments of
temperature setpoint, fan speed, VRF operating mode, etc.
Since all VRF brands have their own communication protocols
between the remote control unit and VRF equipments (e.g. indoor
or outdoor units), RDF880KN... can send all standard KNX
commands (S-Mode KNX objects) via the KNX bus to a third party
KNX/VRF gateway (as a protocol converter) and then communicate
indirectly with the VRF indoor or outdoor units. Effectively, it works
similarly like a remote control unit of a VRF system.
Note that RDF880KN... cannot replace all functions of the remote
control unit of the VRF system but the following typical VRF
functions:
• Temperature - provide current room temperature value
- adjust temperature setpoint
• Fan - select auto or manual speed up to 7 levels
- select auto swing or fixed swing positions
• Operation - set to AUTO, HEAT, COOL, FAN and
Dehumidify
Typical VRF Systems
(Provided by 3rd Party, non-Siemens products)
Integration
via KNX Bus S-Mode