Bedienungsanleitung Siemens RDF301.50 (Seite 15 von 82) (Englisch)

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Siemens RDF301, RDF301.50, RDF600KN Basic documentation CE1P3171en

Building Technologies Functions 2012-10-04

If a time schedule via bus is present, e.g. from central control unit, then the Auto

Timer mode

is active. The thermostat automatically changes between Comfort

and Economy according to the time schedule via bus.

The display shows the Auto Timer mode symbol

along with the symbol for the

effective room operating mode (Comfort

or Economy ).

By pressing the operating mode button, you can change to another operating

mode.

Automatic fan is the default fan speed in Auto Timer mode.

Each time the time schedule sends a new operating mode (switching event), the

operating mode of the thermostat is set back to Auto Timer mode. This is to assure

that the room temperature is maintained according to the time schedule.

If the time schedule sends Precomfort mode, then this mode will be transformed

either into Economy (factory setting) or Comfort (selectable via parameter P88).

No intervention is possible neither by the user nor by an operating mode switch-

over contact, if Protection mode is set by the time schedule. OFF flashes on the

display when the user presses a button.

The operating mode can be selected locally via the operating mode button.

The behavior of the operating mode button (user profile) can be defined via

parameter P02, factory setting is P02 = 1.

P02 Without time

schedule

With time sche-

dule via bus

Description



 Switching manually between 2 modes, Economy is not

available (factory setting)

 Suited for hotel guest rooms or commercial buildings.

 If a time schedule via bus is available, then the Comfort

mode can be temporarily extended (see below)

 

  

 Switching manually between 3 modes

 Suited for homes and rooms where manual switching to

Economy mode is desired

The thermostat can be forced into Economy mode (e.g. when a window is opened,

when a presence detector signals "no one present", when the keycard of a hotel

room is withdrawn, etc). The contact can be connected to multifunctional input X1,

X2. Set parameter P38, P40 to 3.

The function is also available via the KNX signal "Window state", e.g. from a KNX

switch or a KNX presence detector.

Note: Only one input source must be used, either local input X1/X2 or KNX bus.

User operations are ineffective and “OFF” is displayed if the operating mode

switchover contact is active, or if "Window state" is sent via bus.

Auto Timer mode

with time schedule via

bus

Behavior when bus

sends new operating

mode

Precomfort via bus

Behavior when bus

sends Protection

Availability of Economy

mode

Operating mode

switchover contact

(window contact)

KNX

Room operating mode:

Window state

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