Direct Digital Controller
46
Direct Digital Controller fw 4.013 – Ed. 01/2013
3.4.1.3 External ambient setup
In this menu all parameters for “ExtT” (external temperature) operating
mode can be set.
To gain access to the “Environment setting” menu, first configure the
consent in “
TExt
” or “
Crvc
” mode (climatic curve (for more information
refer to paragraph “On/off command configuration” on page 84).
The parameters that may be programmed in this operating condition
are:
3.4.1.3.1
Set point
3.4.1.3.2
Differential
3.4.1.3.1 Set point
This option allows the user to define external temperature values for
cooling and/or heating operation in “ExtT” (external ambient
temperature) mode.
To exit, select
.
Configuring external set point temperature
Instructions for setting the external temperature follow:
1 - Select from the initial screen to gain access to the main menu.
2 - Select
to access the “User settings” menu.
3 - Enter, if requested, the user 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 plants,
for hot water production
plants;
for chilled water production plants.
6 - Setup” from the drop-down menu.
7 - Select “Set point” from the scrolling menu.
8 - Position the cursor on the value to be modified (Cooling and/or Heating).
9 - Press the knob to allow the change of the selected value.
10 - Turn the knob to modify the value.
11 - Press the knob to confirm the set value.
12 - To exit, select
.
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