Viessmann B2TB004 - Zone Circuit Thermostat Connections

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5461 889 - 16
Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
Control Connections
Zone Circuit Thermostat Connections
Legend
A Room thermostat (dry contact) zone circuit 1
B Room thermostat (dry contact) zone circuit 2
C Room thermostat (dry contact) zone circuit 3
D EA1 module (integrated into the boiler)