Operation manual
7
EWWP014~065KBW1N
Packaged water-cooled water chillers
4PW61660-1A – 04.2012
Switching the unit on
To switch the unit on in cooling mode, proceed as follows:
1
Press the
D
key for approximately 5 seconds, the
G
LED will
be displayed.
To switch the unit on in heating mode, proceed as follows:
1
Press the
C
key for approximately 5 seconds, the
F
LED will
be displayed.
In both cases an initialization cycle is started, the
L
LED, the
M
LED,
the
&
LED and the
é
LED will light up depending on the programmed
thermostat function.
In case the
&
LED or the
é
LED is flashing, it indicates that there is a
compressor 1 or 2 startup request. The compressor will start after the
timer has reached zero.
2
When the unit is started up for the first time, or when the unit has
been out of operation for a longer period, it is recommended to
go through the following checklist.
Abnormal noise and vibrations
Make sure the unit does not produce any abnormal noises or
vibrations: check the fixations and piping. If the compressor
makes any abnormal noises, this may also be caused by an
overcharge of refrigerant.
Working pressure
It is important to check the high and low pressure of the
refrigerant circuit to ensure the proper operation of the unit and
to guarantee that the rated output will be obtained.
3
If the unit does not start after a few minutes, consult the actual
operational information available in the list of direct parameters.
Also refer to the chapter
"Troubleshooting" on page 14
.
Switching the unit off
To switch the unit off and cooling mode is active, proceed as follows:
1
Press the
D
key for approximately 5 seconds, the
G
LED will
be extinguished.
To switch the unit off and heating mode is active, proceed as follows:
1
Press the
C
key for approximately 5 seconds, the
F
LED will
be extinguished.
How to consult and modify the direct parameters
For an overview of the menu structure, refer to
"Menu overview" on
page 16
.
1
Press
B
for 5 seconds in the main display.
The
-/-
parameter group is displayed.
2
Press the
C
or
D
key to select the required parameter
group.
3
Press the
B
key to enter the selected parameter group.
4
Press the
C
or
D
key to select the required parameter.
5
Press the
B
key to consult the selected parameter.
6
Press the
C
or
D
key to raise, respectively lower the
setting of the selected parameter. (Only valid for read/write
parameters.)
7
Press the
B
key to confirm the modified setting.
OR
Press the
A
key to cancel the modified setting.
8
Press the
A
key to return to the parameter group.
9
Press 2 times the
A
key to return to the main display.
If during the procedure no buttons are pressed for 30 seconds, the
displayed parameter code or value will start flashing. After another
30 seconds without pressing any buttons, the controller automatically
returns to the main display without saving any modified parameter.
How to consult the "sensor readout menu" parameters
For an overview of the menu structure, refer to
"Menu overview" on
page 16
.
The
b01
/
b02
/
b03
parameters are part of the "sensor readout
menu".
1
Press the
C
or
D
key in the main display.
The
b01
parameter is displayed.
In case no buttons are pressed, the value of the
b01
sensor will
be displayed until
C
or
D
is pressed again to select
another parameter (
b02
or
b03
).
2
Press the
A
key to return to the main display.
If during the procedure no buttons are pressed for 30 seconds, the
displayed parameter code or value will start flashing. After another
30 seconds without pressing any buttons, the controller automatically
returns to the main display.
Adjusting the cooling temperature setpoint
1
Modify the
r1
cooling setpoint parameter.
This is a direct parameter, refer to
"How to consult and modify the
direct parameters" on page 7
.
Adjusting the heating temperature setpoint
1
Modify the
r3
heating setpoint parameter.
This is a direct parameter, refer to
"How to consult and modify the
direct parameters" on page 7
.
NOTE
If remote on/off control is enabled, refer to
"Selecting
local or remote on/off control" on page 11
.
The pressures measured will vary between a maximum
and minimum value, depending on the water and outdoor
temperatures (at the moment of measurement).
NOTE
In case of remote on/off control (
h07
=
1
), it is recom-
mended to install an on/off switch near the unit in
series with the remote switch. The unit can then be
switched off from either place.
The selection of cooling mode or heating mode can
only be carried out at startup. Selecting an opposite
mode without switching the unit off is impossible.
NOTE
If remote on/off control is enabled, refer to
"Selecting
local or remote on/off control" on page 11
.
NOTE
When dual setpoint is enabled (refer to
"Selecting dual
setpoint control" on page 11
).
NOTE
When dual setpoint is enabled (refer to
"Selecting dual
setpoint control" on page 11
).
