User Manual

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Siemens…………………….RDF301, RDF301.50..., RDF600KN, RDF600KN/VB, RDF600KN/S Basic Documentation CE1P3171en
Smart Infrastructure 2020-02-21
3.2 Operating modes
The thermostat's operating mode can be influenced in different ways (see below).
Specific heating and cooling setpoints are assigned to each operating mode.
The thermostat sends the effective room operating mode on the bus.
The following operating modes are available:
In Auto Timer mode the room operating mode is commanded via bus.
Auto Timer is replaced by Comfort when no time schedule via bus is present
In Comfort mode, the thermostat maintains the Comfort setpoint. This setpoint can
be defined via parameters P8, P9 and P10.
It can be locally adjusted via the +/- buttons or via bus.
In Comfort mode, the fan can be set to automatic or manual fan speed: Low,
medium or high.
Standard presence mode:
The thermostat switches to Comfort mode when the presence detector (local or on
KNX) is active (room is occupied). *)
Hotel presence mode:
When hotel guests leave their rooms, the thermostat switches to Economy mode
and the local HMI (keys) is locked. Upon occupancy, the thermostat returns to the
previous operating mode set by the hotel guests.
The setpoints (less heating and cooling than in Comfort mode) can be defined via
parameters P11 and P12.
The thermostat switches to Economy mode when...
– the operating mode button is pressed (only possible if parameter P02 is set to 2)
– Economy is sent via bus
– an operating mode switchover contact on RDF301…(e.g. keycard contact
presence detector, window contact) is active. *)
- "Window state" is sent to the RDF301 via bus, e.g. from a KNX switch or a KNX
presence detector (P02 is irrelevant) *)
In Protection mode, the system is...
– protected against frost (factory setting 8 °C, can be disabled or changed via
P65)
– protected against overheating (factory setting OFF, can be enabled or changed
via P66)
No other operating mode can be selected locally if Protection mode is commanded
via bus. and are displayed.
The thermostat switches to Protection mode when...
– the operating mode button is pressed
– Protection is sent via bus
– the window contact on RDF600KN, RDF600KN/VB is active (open window).
– "Window state" is sent to the RDF600KN, RDF600KN/VB via bus, e.g. from a
KNX switch *)
*) Refer to chapter 3.2.1 for detail regarding the operating mode switchover
contact (RDF301...), window contact (RDF600KN…) and presence detector
(RDF600KN…).
Room operating mode:
State
Auto Timer
Comfort
Presence detector
(RDF600KN
…
)
Econom
y
Room operating mode:
Window state
(RDF301…)
Protection
Room operating mode:
Window state
(RDF600KN
…
)
Note: