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Vitodens 222-F, B2TB 19, 35, 68, 125 Installation
Wiring Diagram
Control Connections
If any of the original wires as
supplied with the appliance must
be replaced, it must be replaced
with the exact equivalent.
CAUTION
Label all wires prior to disconnection
when servicing controls. Wiring errors
can cause improper and dangerous
operation. Verify proper operation
after servicing.
WARNING
DISCONNECT POWER BEFORE
SERVICING BOILER.
* Only one function/connection may
be assigned to each connection.
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