Immergas VICTRIX MAIOR 28 Instructions And Recommendations page 71

Operation with zone card connected on DimBUS
By connecting the zone card (optional) to DimBus, the flow temperature settings of the three zones can be set by turning the CH knob (6).
The display will then show the setting of the first zone (u1) and you can change its value by turning the CH knob (6).
RESET
RESET
INFO MODE
INFO MODE
If the optional outside sensor is present, the flow temperature cal-
culation curve is set depending on the outside temperature (Par-
ag. 1.12).
Confirming the value with MODE will display the setting of the
second zone (u2), which can be changed in the same way by subse-
quently accessing the third zone (u3).
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When the third zone mode is over, the display will return to the
standard display.
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