Direct Digital Controller
Direct Digital Controller fw 4.013 – Ed. 01/2013 109
OPERATING
MODE
MANUAL
(MAN)
RYWm
RYWa ExtT AmbT WCmp MON CUST
Global On-Off
X
X X
X
X
*
Partial On-Off
X X X X X
*
Global water T
timer
X X
X X
X
*
Partial water T
timer
X X X X
X
*
External
Temperature
X
X
X
*
Chronothermostat
X X
*
Climatic curve
X
X
*
RY-RW
X
X X
*
AutoYW
X X
*
Table 6 – Operating modes (bus access not configured)
X
*
In CUSTOM operating mode it is possible to select freely the ON/OFF commands that determine the
activation of the plant. It is not however possible to select the "WeComp" function at the same time as
the “GenTmr” or “ChronT” consent..
Multi DDC plants only.
Two-line hot/cold plants only.
To select the operating mode of the plant, carry out the following operations:
1 - Select
from the initial screen to gain access to the main menu.
2 - Select
to gain access to the System installation.
3 - Enter the installer password on the numerical keypad that appears on the display.
4 - Select “Plants” from the drop-down menu.
5 - Select the appropriate icon:
for two-line cooling/heating plant; for the hot water production
plant;
for the chilled water production plant.
6 - Turn the knob to scroll the cursor downward until highlighting “Base plant part” and press the knob.
7 - Turn the knob to scroll the cursor downward until highlighting “Cond/Heat. serv. Conf.”.
8 - Turn the knob to scroll the cursor downwards until “Partial operation mode” is selected and press the
knob to access the screen.
9 - Select
or to change the operating mode.
10 - If CUSTOM mode is selected, pass to each individual item (
), enabling those desired ( ).
11 - To exit, select
.
If the DDC is the Master of two plants, repeat from 5 to 9 for the second plant
NOTE
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