Technical information

5346540 v1.0 09/2006 Technical information subject to change without notice

Control Overview Vitocontrol-S, CT3/VD2—Electrical

Standard Control Junction Box (no modules)

Field Connection Vitotronic Plug DIN Rail Terminal Cable Connection

Heating Circuit Pump [20]M2 1 BK1

Heating Circuit Pump [20]M3 2 BK2

DHW Recirculation Pump [28] 3 BK3

DHW Pump [21] 4 BK4

Control Output [20]A1 5 BK5

Shunt Pump/Boiler Pump [29] 6 BK6

Alarm [50] 7 BK7

Module Power Supply [156] 8/9/10 BK8

Incoming Power [40] 11/G/N BK1/G/N

Section 3

Section 3.3