Wiring Diagram; Required Code - Viessmann VITOTRONIC 100 GC1B Installation And Service Instructions Manual

Installation Examples
System Example 1

Wiring Diagram

Closing of system mixing valves installed downstream of the boiler via the Therm-Control temperature sensor. These
3rd party heating circuit control units are not connected to the boiler control units.
12
(continued)
Vitotronic 100, GC1B Installation and Service

Required Code

Category Function
0d:1 2 "Boiler" Therm-Control temperature sensor
affects the mixing valves of
downstream heating circuits.
4C:2 1 "General"
Connection at plug sÖ affects
the mixing valves of downstream
heating circuits
Legend
A Contactor relay
B Downstream heating circuit, switching contact
closed: signal for mixing valve closed.