Manual Fan Control And Fan Level Display - Gira 5142 00 Product Documentation

4.2.4.5.5 Manual fan control and fan level display

Introduction
The manual fan control makes it possible to control the fan of a fan coil, independent of the
command value specification of a room temperature controller. This enables requirements-
oriented ventilation of a room in any desired, manually specified fan level. With the push button
sensor 3 plus, manual control of the fan is possible via a rocker switch or push button function
and also via the configuration menu.
Independently of the fan control, the current fan level of a fan coil and its heating/cooling mode
can be shown on the display of the push button sensor.
i The manual fan control of the push button sensor 3 plus is adapted to the functions of the
Gira KNX/EIB fan coil actuator (order no. 2163 00). Other fan coil actuators cannot be
actuated or evaluated, or only to a limited extent.
The manual fan control and the fan level display are configured centrally in the ETS parameter
node "Display". The function must be enabled globally here so that manual fan control is
possible via the device rockers or buttons and via the configuration menu. The fan levels can
also only be shown in the display of the push button sensor after global enable has been made.
Configuration and adjustment of the fan coil actuator
So that the push button sensor 3 plus can control the Gira KNX/EIB fan coil actuator, it is
necessary to link various communication objects of the push button sensor with objects of the
actuator. Furthermore, various parameters of the actuator have to be set to manual fan control
via the push button sensor in the actuator's ETS application program.
Parameter configuration:
In automatic mode of the fan coil actuator the fan levels are controlled directly using command
value objects of a room temperature controller. This room temperature controller may be a push
button sensor 3 plus. In operation of the fan coil convector it is possible for the automatic mode
to be overridden by a manual fan control. Then the actuator no longer reacts to the controller
command value for control of the blower fan, but rather only to the manual fan level presetting,
e.g. from the push button sensor 3 plus.
In order to prepare the actuator for manual fan control via the push button sensor, the fan coil
actuator has to be configured as follows...
o The parameter "Manual fan control" on the parameter page "Manual fan control" must be
set to "enabled".
o The parameter "Activation of manual fan control" must be set to "Via object 'Man. fan cont.
active/inactive'".
o The parameter "Fan level switchover in case of manual specification via" defines in the
actuator whether the fan levels are switched over manually using a 1-bit object (switching
direction presetting) or alternatively using a 1-byte object (value presetting). The push
button sensor 3 plus supports both methods for manual control. The data format of the fan
level presetting is determined in the push button sensor via the parameter with the same
name compared to the actuator; this parameter is on the "Display" parameter page. The
push button sensor and actuator must be configured to the same data format!
Order No. 5142 00
Order No. 5145 00
Software "Push button sensor 3 plus"
Functional description
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