Zone Circuit Thermostat Connections - Viessmann B2TB004 Installation Instructions Manual

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Control Connections
Vitodens 222-F, B2TB 19, 35, 68, 125 Installation

Zone Circuit Thermostat Connections

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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)
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Vitodens 222-fB2tb123

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