Daikin EUWAC8FZW1 Installation And Operation Manual page 14

To define the cooling temperature difference, proceed as follows:
1 Enter the list of direct parameters.
2 Press the A key once.
Direct parameter code r2 appears on the display.
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 switch to the list of parameter codes.
6 To adjust or to consult other direct parameters before saving the
modifications, select another direct 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 direct 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 direct
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Tasks carried out using user parameters
Entering the list of user parameters
Access to the list of user parameters is protected by the user
password (a 3-digit number between 0 and 199).
To enter the list of user parameters, proceed as follows:
1 Press the E key for approximately 5 seconds.
The number 00 starts flashing on the display.
2 Enter the correct password using the A and/or Z key.
The password's value is 22.
3 Press the R key to confirm the password and to enter the list of
user parameters.
The controller displays parameter code :d (which is the first user
parameter).
Defining the measurement unit
Depending on the setting of user parameter :d, all temperature
values are displayed in °C or in °F. The conversion formulas from °C
to °F and vice versa are:
T =(T –32)/1.8
°C °F
T =(T x1.8)+32
°F °C
If user parameter :d is set to 0, all temperatures appearing on the
display will be expressed in °C. If user parameter :d is set to 1 all
temperatures will be expressed in °F.
To define the measurement unit, proceed as follows:
1 Enter the list of user parameters.
Parameter code :d appears on the display.
2 Press the R key to switch to the parameter value.
3 Select the appropriate setting using the A and/or Z key.
4 Press the R key to return to the list of parameter codes.
5 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 2 onwards.
6 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.
Installation and operation manual
11
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 time delay between pump and compressor start-up
User parameter c7 allows you to define the time delay between the
pump startup and the compressor startup. The default, limit and step
values for the time delay are:
Default value 15 sec
Limit values 0 to 150 sec
Step value 1 sec
To define the time delay, proceed as follows:
1 Enter the list of user parameters.
Parameter code :d appears on the display.
2 Select parameter code c7 using the A and/or Z key.
Parameter code c7 appears on the display.
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 time delay between unit and pump shutdown
User parameter c8 allows you to define the time delay between the
unit shutdown and the pump shutdown, more specifically the period
during which the pump will still be active after the unit has been shut
down. The default, limit and step values for the time delay are:
Default value 0 min
Limit values 0 to 150 min
Step value 1 min
To define the time delay, proceed as follows:
1 Enter the list of user parameters.
Parameter code :d appears on the display.
2 Select parameter code c8 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.
EUWAC5~10FZ
Packaged air-cooled water chillers
4PW14037-1D