Technical data

77
Installation – Vitocontrol-S, VD2/CT3/CM2
Sensor connection
AOutdoor temperature sensor
(not polarity sensitive)
BReturn temperature sensor T2
Installation location:
North or north-western wall. In
multi-storey buildings, in the upper
half of the second floor.
Not above windows, doors or
ventilation outlets.
Not immediately below balcony or
gutter.
Do not paint over.
CTemperature sensor T1
DDHW tank temperature sensor
ESupply temperature sensor –
common heating supply
Connection:
Two-wire cable, max. 35m (120ft.)
length, AWG 16.
5351 340 v1.4
17B 17A 5 2
1 2 3 1 2 3 1 2 3 1 2 3
D
1
1 2 3
A B C
E