Electrical Connections - Viessmann Vitocrossal 300 Series Technical Data Manual

Wiring

Electrical Connections

WARNING
DISCONNECT POWER BEFORE
SERVICING BOILER.
If any of the original wires as supplied
with the appliance must be replaced,
it must be replaced with the exact
equivalent.
28
Vitocrossal 300 CU3A 26 to 199 Technical Data
CAUTION
Label all wires prior to disconnection
when servicing controls. Wiring errors
can cause improper and dangerous
operation. Verify proper operation
after servicing.
* Only one function/connection may
be assigned to each connection.