Baxi Senertec Dachs Pro 20 ST, Assembly And Operation Manual, Page: 81 / 118

14/4798.495.002 Installation | 81
Dachs Pro 20 ST
External sensor (AF) connection
F1-F4 sensor connection (buffer vessel sensor)
►
Install the external sensor provided in the scope of delivery to
the building.
►
Route the sensor line to the MSR Pro 20 ST.
Please note the dimensioning of the sensor line according to
the distance to the external sensor.
►
Insert the sensor line from the bottom into the controller.
►
Connect the sensor line to the
X1a
connector.
►
Secure the sensor line with cable ties at the bottom stress relief
rail of the MSR Pro 20 ST.
►
Route the already assembled sensor cable harnesses to the
MSR Pro 20 ST.
►
Insert the sensor line from the bottom into the controller.
►
Connect the connection lines of the sensor cable harnesses to
the respective X1b, X1c, X1d, X1e connectors.
Sensor F1 - connection to X1b
Sensor F2 - connection to X1c
Sensor F3 - connection to X1d
Sensor F4 - connection to X1e
►
Secure the sensor lines with cable ties at the bottom stress relief
rail of the MSR Pro 20 ST.
Fig. 77: External sensor (AF)
Fig. 78: External sensor (AF) connection
Fig. 79: F1-F4 sensor connection
From experience, the north or north west wall are suitable for installation
of the outside temperature sensor. However, if the building is heated using
several separately controlled heating circuits, the outside temperature
sensor has to be installed at the outer wall of the building section with
the heating circuit connected to the Dachs.
Install the outside temperature sensor at a height of
approx. 2-2.5 m
.
If the building has multiple storeys, the sensor is to be installed in the
top half of the second storey. Prevent undesired impacts on the sensor
by avoiding installation positions over windows, doors, ventilation ducts
and directly under balconies or rain pipes.