Vaillant VRT 350, Operating Instructions Manual, Page: 8 / 36

3 Overview of the equipment
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Operating instructions VRT 350 0020135485_00
3 Overview of the equipment
3.1 Product features
–
Room-temperature-controlled
–
Controls heater and hot water
–
Plain text display
–
Illuminated display
3.2 Type designation and serial number
3.2.1 Type designation
Abbreviation Explanation
’VRT’ Vaillant controller
3xx Room temperature controlled
Table 3.1: Type designation
3.2.2 Identification plate
The identification plate is located inside the controller and
is not accessible from the outside.
3.2.3 Serial number
The 10-digit article number can be found in the serial num-
ber. You can view the serial number under "Menu
→
Inform-
ation
→
Serial number". The article number is found in the
second line of the serial number.
3.3 Unit design
1
2
4
3
5
Image 3.1: Controller (front view)
1 Display
2 Diagnosis socket
3 Right selector button
4 Control knob
5 Left selector button
3.4 Control function
The controller controls the Vaillant heating system and
hot water generation of a connected domestic hot water
cylinder.
3.4.1 Heating installation
The controller is a room-temperature-controlled controller
and must be installed in the living room.
You can use the controller to set the desired temperature
for different times of the day and for different days of the
week.
The temperature sensor measures the room temperature
and sends the values to the controller. At lower room tem-
peratures, the controller switches the heater on. Once the
room temperature reaches the desired set temperature,
the controller switches the heater off. The controller there-
fore reacts to the fluctuations of the room temperature and
constantly controls the room temperature to the temperat-
ure that you have set.