Technical data

78
Installation – Vitocontrol-S, VD2/CT3/CM2
Sensor connection (continued)
Outdoor temperature sensor
The outdoor temperature sensor should be mounted 2 to 2.5m / 6.5 to 8 ft above
ground level on the north or north-west facing wall of the building. In the case of
multi-storey buildings, it should be mounted in the upper half of the second storey.
Make sure that the sensor is not located over windows, doors and air vents, nor
immediately beneath a balcony or guttering.
Do not paint over the outdoor temperature sensor housing.
1. Remove the cap.
2. Mount the bottom part of the sensor
housing.
3. Pull the sensor wire through the
opening in the terminal compartment
and through the strain relief
provided.
4. Connect the wires to the terminals.
5. Place the cap over the outdoor
temperature sensor.
5351 340 v1.4
2.
5.
1.
4.
3.
Resistance in
400
420
440
460
480
500
520
540
560
580
600
-40 -30 -20 -10 0 10 20 30
Outdoor temperature in °C / °F
-40 -22 -4 14 32 50 68 86
When extending wire, there is the
possibility of exposure to
electromagnetic interference.
Avoid running wires beside or near
high voltage 120/240 VAC
conductors. If proximity to high
voltage conductors cannot be avoided,
use stranded, twisted pair or shield
design wire. Ensure that only one end
of the shielding is grounded.
WARNING