M07J40G8-00
21/07/08
page 24
SET-POINT CORRECTIONS
The correction aim at optimising the energetic efficiency of the unit.
To do this, the corrections dynamically modify the set-point according to some variables. For example, in the summertime with
very low external temperatures, therefore with a reduced load, it is possible to obtain the internal comfort even with set-points
higher that the standard with a consequent higher energetic efficiency.
The
static
set-point can therefore be modified dynamically with two CORRECTIONS based on two factors external to the unit:
•
Correction based on the External temp. / enthalpy
•
Correction based on the Water reset (4-20 mA signal supplied by the Customer)
The
correct
set-point, to which all corrections have been added or detracted, is called PRESENT set-point and is visible at
status 2.
For further details, see the ELECTRICAL CONNECTIONS chapter.
MAINTENANCE SET POINT
It can be used to maintain the installation inside the working limits, even if the unit is deactivated.
The MAINTENANCE Set Point checks the water temperature when the unit is put on OFF or Stand-by.
To do this, it periodically activates the circulation pump, tests the water temperature and even activates one or more
compressors. It is necessary to modify the parameters with access reserved to the assistance centres
MENU
NUM Parameter name meaning
25
MantCoolEn
It enables Summer Maintenance
PARAMETER
CONTROL
MAINTENANCE
114
SetMantCool
Summer maintenance set-point
DEMAND LIMIT
The function of the DEMAND LIMIT allows the limit of power so that the electric consumptions can be controlled by a signal
external to the unit supplied by the customer.
On the STATUS menu, no. 22, the external signal of DEMAND LIMIT is displayed.
For further information,see the ELECTRICAL CONNECTIONS chapter.
SECOND SET-POINT
The secondary set point is activated by remote authorization (see the ELECTRICAL CONNECTIONS chapter).
It is possible to limit the minimum power which can be delivered during the time in which the secondary set point is activated
by configuring the 276 MinPot2Set parameter (access reserved to the assistance centres).
TIME TABLES
The system is factory equipped with a clock function, found on the board.
By activating the timetables, it is possible to set up to 6 events for each day of the week.
If there is also a remote keyboard, the operations relative to the time and the date must be repeated on both keyboards, so
that the two clocks (which are different) are synchronized.
Все каталоги и инструкции здесь:
http
:
//splitoff.ru/tehn-doc.html
