Direct Digital Controller
Direct Digital Controller fw 4.013 – Ed. 01/2013 75
9 - Wait for the DDC to receive information from the other DDCs so that all data from them is displayed: DDC
ID, number/numbers of plant/plants managed, type of plant, and indication of whether the DDC is a
Master or Slave DDC for each plant managed.
All DDC data appears on the screen only when Multi DDC configuration is accessed on all of them.
10 - Check carefully that all information shown is complete and consistent with that desired.
11 - Exit by selecting
on all the DDCs.
The Master DDC of a plant on which units of the GAHP-GS/WS type are configured MUST be one of those
that actually manage a number of GAHP-GS/WS units. (Warning: this rule must be respected by the
installation technician, and is not automatically guaranteed).
If units of the GAHP- GS/WS type are configured as 4-line units (i.e. the cold "branch" is configured on a
plant of a different number from the plant on which the hot "branch" is configured), the Master DDC of the
two plants MUST be the same. (This rule nevertheless, is "forced", because if a DDC on which units of the
GAHP- GS/WS type in 4-line mode are configured is set as Master DDC for one of two plants, it is
automatically set ALSO as Master for the other plant).
Every DDC Slave cannot have units belonging to different Groups; that is, every Slave DDC shall have only
units belonging to the Separable Group or only units belonging to the Base Group. The possibility of having
units belonging to both Groups occurs only on the Master DDC
All objects managed by one or more RB100 (plant parts) or RB200 devices (third party units and plant parts)
can only be configured on the plant Master DDC.
NOTE
NOTE 2
NOTE 3
NOTE 4
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