Robur Direct Digital Controller, Инструкция по установке, использованию и программированию

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Direct Digital Controller
Direct Digital Controller fw 4.013 – Ed. 01/2013
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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.
4.5.3.1.2 Instructions for operation in mRYW mode
In RYWm operating mode, the ON – OFF commands of the units are managed by external contacts (such as
in a building automation plant); the selection of COOLING or HEATING mode for two-line hot/cold plants is
carried out manually by the user via the Direct Digital Controller (“
Plant control ” menu).
Closing the R - Y and/or R - W contacts on connector D located on the rear of the Direct Digital Controller (see
Figure 13 on page 54) determines the activation of the corresponding plant:
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Closing R-Y activates the cooling plant or the two-line cooling/heating plant, if it is in COOLING mode;
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Closing R-W activates the heating plant or the two-line cooling/heating plant, if it is in HEATING mode.
If for two-line hot/cold plants the simultaneous closure of the R - Y and R – W contacts is permitted, the setting
of the units in COOLING or HEATING mode, in fact, does not depend on external inputs but must instead be
selected manually by selecting the icon contained in the “ Plant control ” menu.
The figure on the right shows the commands active for RWYm operating
mode. The symbol located next to the text description of the command
indicates that the command is enabled. RWYm operating mode allows 3
on/off commands to be enabled:
RY-RW Command for external RY-RW contacts
GenTrm General water T timer on/off command;
GrpTmr Command for Partial water T timer (Multi DDC plants only).
The commands available in RYWm operating mode are predefined and may not be modified. It is however
possible to exclude some of them by means of the buttons contained in the “
Plant control ” menu.
When plant configuration is complete, it is always necessary to set the following parameters:
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Default set point see paragraph 3.4.1.1.1.1 on page 31 ;
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Water Differential see paragraph 4.4.2.6.1 on page 93 and, for separable plants, paragraph 4.4.2.5.3 on
page 88 ;