Operation manual
11
EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22685-1
Advanced features of the digital controller
This chapter gives an overview and a brief functional description of
the screens provided by the different menus. In the following chapter,
you will find how you can set up and configure the unit using the
various menu functions.
All menus are directly accessible using the corresponding key on the
digital controller. The down arrow
X
on the display indicates that you
can go to the next screen of the current menu using the
h
key. The
up arrow
W
on the display indicates that you can go to the previous
screen of the current menu using the
g
key. If
C
is displayed, this
indicates that you can either return to the previous screen or can go
to the next screen.
Readout menu
Setpoints menu
Depending upon the settings in the user settings menu and on the
selected cooling/heating operation mode, the "setpoints" menu can
either be entered directly or by means of the user password.
User settings menu
The "user settings" menu, protected by the user password, allows a
full customization of the units.
To consult actual operational infor-
mation about the control mode, the
inlet and outlet water temperature of
the evaporator and inlet water
temperature of the condenser.
Note that for a DICN system, the
and
values are the values of the
individual units, not of the system.
Temperatures of the system can be
consulted in the first screen of the
network menu.
To consult information about the
outlet water temperature of the
evaporator of circuit 1 and 2 (only for
EWWD360~540).
To consult information about the unit
status and the thermostat step.
To consult information about the
pressures of circuit 1.
To consult information about the
pressures of circuit
2 (only for
EWWD360~540).
To consult actual operational infor-
mation about the total running hours
of the compressors and the number
of compressor starts.
To consult actual operational infor-
mation about the total running hours
of the compressors in
cooling mode
and in heating mode
.
To define the temperature setpoints.
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To define the manual settings and to
activate or deactivate manual control
mode.
To define the thermostat settings.
To define the lead-lag mode of both
circuits (only for EWWD360~540).
To define the capacity limitations. (first
screen)
To define the capacity limitations.
(second screen)
To define the pump control settings.
To define the schedule timer.
To define the dual evaporator pump.
To define the display settings (first
screen).
To define the display settings (second
screen).
To define the number of slaves for a
“master” unit. This menu can only be
accessed at the "master" unit!
The controller displays the name of the
unit:
,
...
#
. This
name is automatically assigned depen-
ding on the set hardware address. Refer
to "Setting the adresses" in "Connection
and setup of a DICN system
"
in the
installation manual.
To define whether or not a password
is needed to enter the setpoints
menu.
To enter the service menu (only a
qualified installer is allowed to access
this menu).
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