Operating instructions

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Installation
External hook−up in multi−boiler systems without LON (cont.)
Vitocrossal300operation with a modulating burner
Connection modulating burner:
H Burner stage1fA of Vitotronic100
H Plug−in connectorlÖ of
Vitotronic100 remains unused
H Burner stage2lÖ modulating
under the control of the on−site
modulation controller
H Burner stage 1 is enabled by the
modulation controller via external
demandaVH.
The DHW cylinder temperature and
the load−dependent cascade control
must be controlled by an external
control unit.
!
Please note
The contact "Boiler enable"
must be provided in
multi−boiler systems to prevent
boiler damage. This contact
must always be closed on the
lead boiler.
5862730GB