Operation manual
11
EWWP045~065KAW1M + ECB1~3MUW
Packaged water-cooled water chillers
4PW30041-1A
Selecting local or remote on/off control
User parameter h7 in combination with the remote on/off switch
(installed by the customer) allows the user to switch the unit on
without using the I or Y key on the controller.
■ When user parameter h7 is set to 0 (= No), the unit can only be
switched on by means of the I or Y key on the controller.
■ When user parameter h7 is set to 1 (= Yes), the unit can be
switched on by means of the remote on/off switch and the I or
Y key on the controller.
To select local or remote on/off control, proceed as follows:
1 Enter the list of user parameters.
Parameter code :d appears on the display.
2 Select parameter code h7 using the A and/or Z key.
3 Press the R key to switch to the parameter value.
4 Select the appropriate setting using the A and/or Z key.
5 Press the R key to return to the list of parameter codes.
6 To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the A and/
or Z key and then repeat from instruction 3 onwards.
7 To save the modifications, press the E key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
In the second case, the display starts flashing. Approximately
40 seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Locking the controller keyboard
Once user parameter h9 is set to 0, the following advanced features
can no longer be carried out by means of the controller:
■ modifying direct and user parameters (parameters can be
displayed but not modified),
■ selecting cooling or heating mode,
■ resetting the timers.
When user parameter h9 is set to 1, the above-described advanced
features can be carried out using the controller.
To lock or unlock the controller keyboard, proceed as follows:
1 Enter the list of user parameters.
Parameter code :d appears on the display.
2 Select parameter code h9 using the A and/or Z key.
3 Press the R key to switch to the parameter value.
4 Select the appropriate setting using the A and/or Z key.
5 Press the R key to return to the list of parameter codes.
6 To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the A and/
or Z key and then repeat from instruction 3 onwards.
7 To save the modifications, press the E key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
In the second case, the display starts flashing. Approximately
40 seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Defining the unit's serial address
To control the unit from a supervisory system, an address card
(optional module) should be installed in the unit. The unit's serial
address required for communication with the supervisory system is
defined by parameter ha. The default, limit and step values for the
serial address are:
■ Default value 1
■ Limit values 1 to 16
■ Step value 1
To define the unit's serial address, proceed as follows:
1 Enter the list of user parameters.
Parameter code :d appears on the display.
2 Select parameter code ha using the A and/or Z key.
3 Press the R key to switch to the parameter value.
4 Select the appropriate setting using the A and/or Z key.
5 Press the R key to return to the list of parameter codes.
6 To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the A and/
or Z key and then repeat from instruction 3 onwards.
7 To save the modifications, press the E key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
8 In the second case, the display starts flashing. Approximately
40 seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Key on the controller Remote On/off switch UNIT RESULT
ON ON ON
ON OFF OFF
OFF ON OFF
OFF OFF OFF
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