25
Functions
Set flow temperature
(cont.)
Flow temperature for external demand
If the "External demand" contact is closed, the flow temperature will be raised
to the set value.
Set values
(multi-boiler control unit)
Heat demand via external contact.
The temperatures are then displayed during the
next scan (actual flow temperature, set flow
temperature).
In the "Operating details" menu (see pageĂ15) you can scan whether the
control unit is set to "External demand/heat demand via Viessmann 2-wire
BUS".
Operating details
(multi-boiler control unit)
Heat demand from VitotronicĂ050.
5862Ă474ĂGB
External
demand
Heat demand
via 2-wire BUS
