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Product no.
RDF880KN/NF
RDF880KN
Applications
Siemens
Smart Infrastructure
2.
Summary
2.1
Types
Stock no.
Operating voltage
S55770-T409
AC 230 V
S55770-T415
1)
Additional ARG800.1 mounting frame is required to complete the installation and ARG800.1
must be ordered separately. See section 2.7.
2)
On/Off output with potential free input from AC 24...230 V
2.2
Ordering
• When ordering, please specify product no., SSN no. and name:
e.g.: RDF880KN (S55770-T415) room thermostat.
• Separate mounting frames (ARG800.1) must be ordered for RDF880KN/NF
installation (see section 2.7).
• Order valve actuators separately.
2.3
Functions
RDF880KN... is a 2-in-1 design to provide easy-to-understand HMI for any existing
VRF system installed in residential homes and apartments where Under Floor
Heating (UFH) room thermostat may be required at the same time.
The required applications are selected and activated during commissioning via the
following tools:
• ETS
• Local DIP switch and the HMI (see table below):
Under Floor Heating (UFH) unit with an On/Off control output
•
VRF HMI Room unit to send commands to a VRF indoor unit via a KNX/VRF
•
gateway
Under Floor Heating unit with a VRF HMI function
•
RDF880KN..
Basic documentation
Control outputs
Suitable conduit box
On/Off
Square types only
1
2)
Round/square types
1
2)
Download via ETS
(All in OFF positions)
UFH only
VRF HMI only
VRF HMI and UFH
1)
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A6V12318532_en--_a
2021-03-22
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