EWWP045~06 ECB1~3MUW
Packaged water-cooled water chillers
4PW30041-1A
Operation manual
16
User password menu
Cooling/heating menu
Tasks of the user settings menu
Entering the user settings menu
The user settings menu is protected by the user password, a 4-digit
number between
0000
and
9999
.
1
Enter the
USERSETTINGS MENU
through the main menu
.
(Refer to
the chapter
The controller will request the password.
2
Enter the correct password using the
g
and
h
keys.
3
Press
q
to confirm the password and to enter the user settings
menu.
The controller automatically enters the first screen of the user
settings menu.
To define settings of a certain function:
1
Go to the appropriate screen of the usersettings menu using the
g
and
h
keys.
2
Position the cursor behind the parameter to be modified using
the
q
key.
3
Select the appropriate setting using the
g
and
h
keys.
4
Press
q
to confirm the selection.
When the selection has been confirmed, the cursor switches to
the next parameter which can now be modified.
5
Repeat from instruction 2 onwards to modify the other
parameters.
Defining and activating the control mode
The unit is equipped with a thermostat which controls the cooling
capacity of the unit. Two different control modes exist:
■
manual control mode: the operator controls the capacity himself
-
MANUAL CONTROL
■
inlet control mode: uses the evaporator and/or condenser
entering water temperature to control the capacity of the unit -
INLET WATER
When the operator wants to control the capacity himself, he can
activate manual control mode using the
CONTROL SETTINGS
screen of
the user settings menu. In this case, he has to define the following
parameters:
■
MODE
(present mode): manual control.
■
C11
,
C12
,
C21
,
C22
,
C31
,
C32
(compressor status of module 1, 2
and 3 in manual mode or capacity limitation value in case the
"capacity limitation remote contact" is enabled):
ON
or
OFF
.
Defining the thermostat settings
When automatic control mode is selected, the unit uses a thermostat
to control the cooling or heating capacity. The maximum number of
thermostat steps are as listed:
However, the thermostat parameters are not fixed and can be
modified via the
THERMOST. SETTINGS
screen of the user settings menu.
The default, limit and step values for the thermostat parameters are:
Defining the lead-lag mode
The lead/lag mode determines which module starts up first in case of
a capacity demand.
The lead-lag parameters are:
■
LEAD-LAG MODE
Automatic: the controller decides whether module 1, module 2,
or module 3 starts up first.
The modules follow the entered order of starting up (see table
below).
■
LEAD-LAG HOURS
: In the automatic mode, the number of hours
indicated on the display is the maximum difference between the
running hours of the modules. This value is important for main-
tenance purposes. It should be set high enough so that the
modules do not require maintenance at the same time and that
at least one module can remain constantly active.
The lower and upper limits are 100 and 1000 hours respectively.
The default value is 1000 hours.
Defining the pump control settings
The
PUMPCONTROL
screen of the user settings menu allows the user to
define the pump-leadtime and pump-lagtime.
■
PUMPLEADTIME
: used to define the time that the pump must run
before the unit can start up.
■
PUMPLAGTIME
: used to define the time that the pump keeps
running after the unit has been stopped.
Defining the display settings
The
DISPLAY SETTINGS
screen of the user settings menu allows the
user to define the choice of language, time and date.
■
LANGUAGE
: used to define the language of the displayed
information of the controller.
■
TIME
: used to define the present time.
■
DATE
: used to define the present date.
To check the status of the change-
able relay output.
To change the user password.
To select cooling or heating mode.
NOTE
To activate manual control mode, select
MANUAL
as
present mode. To deactivate the manual control mode,
select
INLET WATER
as present mode.
BW
CHANG. REL OUTPUTS
DO1 REV.VALVE(C/H) : O
B
CHANGE PASSWORD
NEW PASSWORD : 0000
CONFIRM : 0000
B
COOLING/HEATING
MODE : COOLING (EVAP)
32Hp
4
48Hp
4
64Hp
6
36Hp
4
52Hp
6
68Hp
6
40Hp
4
56Hp
6
72Hp
6
44Hp
4
60Hp
6
Lower limit
Upper limit
Step
Default
STPL (°C)
0.4
2.0
0.1
1.5
STEPDIFFERENCE (°C)
0.2
0.8
0.1
0.5
LOADUP (sec)
15
300
1
180
LOADDOWN (sec)
15
300
1
20
NOTE
A functional diagram showing the thermostat parame-
ters can be found in
3 modules
2 modules
first
>
next
>
last
first
>
last
1
2
3
1
2
2
3
1
2
1
3
1
2
NOTE
If a module is de-activated due to a failure, the next
module will start up instead.
