Direct Digital Controller
Direct Digital Controller fw 4.013 – Ed. 01/2013 143
Main ON/OFF switch. Turn the knob to position the cursor on the button and press the same to activate
it (symbol of the ON/OFF button in the ON position
).
Partial ON/OFF switch;
The consent is active for Multi-DDC plants (symbol of the ON/OFF
button in the ON position
).
General Water Bands activation/deactivation button (the consent is disabled in the WCmp
functioning mode).
Partial Water Bands activation/deactivation button (
button disabled for plants managed by a
unique DDC
) If the specific DDC is activated, also use the partial hourly programming (see
paragraph
3.4.1.1.1.4 – “Partial water T timeri”).
Repeatedly pressing the key causes the variation of the symbol given on it and the setting in
the following way:
•
the room temperature set-point is that active on the bases of the programming set
on the chronothermostat.
•
o : the room temperature set-point is always T3 (maximum level of the heating
or cooling service).
•
the room temperature set-point is always T2 (average level of the heating or
cooling service).
•
o : the room temperature set-point is always T1 (minimum level of the heating
or cooling service).
NOTE: continuing to press the knob, the sequence is repeated.
NOTE: the climatic curve function remains active in all modes stated above.
NOTE: if the symbol on the button is
, it means that the climatic curve function has been
disabled by the menu Enabling of climatic curve (paragraph 3.4.1.1.1.2 on page 33).
COOLING/HEATING switching button (two-line hot/cold plants only -
COOLING,
HEATING).
To access the “DHW Plant control” menu, follow the indications given below:
1 - Select the
icon from the initial screen and press the knob to gain access to the screen displaying the
operating parameters of base and separable DHW plant.
2 - Select the
symbol positioned above to gain access to the “Base DHW plant control” menu”.
3 - Select the
symbol positioned below to gain access to the “Separable DHW plant control” menu”.
4 - In both cases (“Base DHW plant control” and “Separable DHW plant control”) the screen shown in the
figure below will be displayed on the screen.
The figure shows the screen of the “DHW plant control” menu and the
relevant button described below.
Main ON/OFF switch. Turn the knob to position the cursor on the button and press the same to
activate it (symbol of the ON/OFF button in the ON position
). In case of Multi-DDC plant, it
is ON only on the Master DDC; on the Slave DDC(s) it reflects the ON/OFF status set on the Master.
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