Manual Fan Control Function - Gira 5142 00 Product Documentation

4.2.4.1.12 Manual fan control function

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.
The fan controller distinguishes between Automatic and Manual operation. Manual operation
and thus also the switchover of the fan operating mode is possible by pressing a button on the
device. For this, a rocker switch or button must be configured to the function "Manual fan
control".
It should be noted that the manual fan control is only effective if the function has been enabled
globally on the "Display" parameter page. Only then are further parameters for the rocker switch
or push button functions visible. If the function is enabled globally, then the device display can -
depending on the parameterised display function - show the current fan level and the fan
operating mode (see page 195-196).
i To allow fan control and also indication of the current fan level, various communication
objects have to be linked with the actuator of the fan coil. 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 (see page 192).
With manual fan control via rocker switches or buttons a distinction is made whether automatic
mode or manual operation of the fan coil is active when the button is pressed.
With activated automatic mode:
The display shows "Auto" and the active fan level. Pressing a button with the function "Increase
fan level" first automatically activated manual operation. The automatic functions of the fan
controller are then deactivated. The display shows "Manu" and the active fan level. It is now
possible by pressing a button with the function "Increase fan level" to switch the fan level up
manually step by step until the maximum level is reached. Pressing a button with the function
"Reduce fan level" switches the fan level down step by step to "0" (fan OFF). Pressing a button
with the function "Reduce fan level" again in the "OFF" state deactivates the manual fan control
and activates the automatic mode again. The display then shows "Auto".
When manual operation is activated:
The display shows "Manu" and the active fan level of the manual control. It is now possible by
pressing a button with the function "Increase fan level" to switch the fan level up manually step
by step until the maximum level is reached. Pressing a button with the function "Reduce fan
level" switches the fan level down step by step to "0" (fan OFF). Pressing a button with the
function "Reduce fan level" again in the "OFF" state deactivates the manual fan control and
activates the automatic mode again. The display then shows "Auto" and the active fan level of
the automatic mode.
Order No. 5142 00
Order No. 5145 00
Software "Push button sensor 3 plus"
Functional description
Page 99 of 281