Direct Digital Controller
130
Direct Digital Controller fw 4.013 – Ed. 01/2013
Regulation parameters
see paragraph
4.4.2.6.4
on page
96
and, for separable plants, paragraph
4.4.2.5.4
on page
89
;
In the presence of third party boilers:
Auxiliary boiler operation
see paragraph
4.4.2.6.2
on page
94;
Rated plant power
see paragraph
4.4.2.6.3
on page
95;
In the case of common water pumps managed by RoburBox:
RoburBox water pump delay
see paragraph
4.4.2.6.5
on page
98
and, for separable plants,
paragraph
4.4.2.5.5
on page
90
;
General water T timer
see paragraph
3.4.1.1.1.3
on page
34
(optional);
Partial water T timer
see paragraph
3.4.1.1.1.4
on page
35
(optional, Multi - DDC plants only).
Enabling the General water T timer substitutes the default water setpoint value set as per Paragraph
3.4.1.1.1.1 with the specific value for the timer cycle active at any given moment.
Once user settings have been programmed, it is possible to proceed to switch-on via the “
Plant control
“
menu.
Switching on plant in mRYW operating mode: Plant control
.
Before switching on the plant, ensure that all the operating parameters have been correctly configured.
To access the
“Heating/Cooling Plant Control”
menu select
from the initial screen.
The figure on the right shows the screen of the “Plant control” menu and
the relative buttons/commands described below.
Main ON/OFF switch;
the switch is disabled in this operating mode
.
Group ON/OFF switch;
the switch is disabled in this operating mode
.
Button for enabling/disabling General water T timer. To disable the General water T timer, i.e. not use
general timer programming (relative command always ON and default setpoint used), position the cursor
on the button and press the knob (“General water T timer” command symbol
not enabled).
WARNING:
DISABLING THE GENERAL WATER T TIMER ENTAILS AUTOMATICALLY
DISABLING THE PARTIAL WATER T TIMER (
).
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
timer
”
).
Chronothermostat button disabled (
command disabled in RYWm operating mode
).
COOLING/HEATING switching button - two-line hot/cold plants only (
COOLING,
HEATING).
To access the “DHW Plant control” menu, follow the indications given below:
WARNING
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