Daikin EWYQ080DAYN, Operation Manual

Page: 11 / 30

EWYQ080~250DAYN
Packaged air-cooled water chillers
4PW35558-1B Operation manual
10
2 Press the
Ì
key to enter the next screen of the readout menu.
•
MANUAL MODE
or
COOL INLSP1
/
2
or
COOL OUTLSP1
/
2
or
HEAT INSLP1
/
2
or
HEAT OUTSP1
/
2
: manual/automatic
control mode operation. If the automatic control mode is selected,
the controller will indicate the active temperature setpoint.
Depending on the status of the remote contact, setpoint one or
setpoint two is active.
•
INL WATER
: actual inlet water temperature.
• OUTL WATER : actual outlet water temperature.
• AMBIENT : actual ambient temperature.
3 Press the
Ì
key to enter the next screen of the readout menu.
The
TEMPERATURE
screen of the readout menu provides
information concerning the discharge temperature of the
compressors (
C11
and
C12
/
C21
and
C22
).
4 Press the
Ì
key to enter the next screen of the readout menu.
The
C1
/
C2 TEMP. READOUT
screen of the readout menu
provides information concerning the refrigerant temperature
(
REFR
) and coil temperature of circuit 1/circuit 2.
5 Press the
Ì
key to enter the next screen of the readout menu.
The
ACT. PRESSURES
screen of the readout menu provides
information concerning the actual pressures of circuit.
■
HP1/2
: high pressure of the refrigerant in circuit 1/2. The first
number stands for the pressure in bar, the second number
stands for the bubble point saturation temperature in degrees
Celsius.
■
LP1/2
: low pressure of the refrigerant in circuit 1/2. The first
number stands for the pressure in bar, the second number
stands for the dew point saturation temperature in degrees
Celsius.
■
LOWNOISE
: at the bottom of the first screen, the status of the
lownoise setting is shown (
Y
=active or
N
=not active).
6 Press the
Ì
key to enter the next screen of the readout menu.
The
UNIT STATUS
screen of the readout menu provides
information concerning the status of the different circuits.
•
C11
and
C12
: actual status of circuit 1 (
ON
or
OFF
).
•
C21
and
C22
: actual status of circuit 2 (
ON
or
OFF
).
When the unit is on and a circuit is
OFF
, the following status
information may appear.
• SAFETY ACT. : one of the circuit safety devices is activated
(refer to "Troubleshooting" on page 20 ).
•
FREEZEUP DIS
: the compressor is disabled by the freeze-up
disable function.
•
FREEZEUP PR
: freeze-up prevention is active.
•
DEFROST BUSY
: defrost is active on this circuit.
•
COMP PR
: compressor protection function is active.
• HP SETBACK : high pressure setback is active.
• MIN.RUN.TIM : minimum running time of the compressor is
active.
•
LIMIT
: the compressor is limited by the limitation function.
• STANDBY DICN : when in a DICN configuration, the unit is in
stand by mode because there is sufficient current capacity to
maintain set point.
• UNIT OFF : the unit is switched off.
•
AREC INLET
: the compressor will not start up when the inlet
water temperature has not risen enough compared to previous
switch off of the compressor.
•
FREE COOLING
: free cooling mode is active
•
TIMER BUSY
: the actual value of one of the compressor timers
is not zero (refer to "Timers menu
Ó
" on page 13 ).
• PUMPLEAD TIM : the compressor will wait to start up for as long
as the pump lead timer is counting down.
•
NO FLOW
: there is no flow after pumplead, the unit is in stand-by
mode.
• NO PRIORITY : This compressor will not start up because it has
no priority. Refer to "Defining the lead-lag settings" on page 16 for
adjusting the priority.
• CAN STARTUP : the circuit is ready to start up when extra
cooling or heating load is needed.
• When none of the above mentioned messages appears, no
special functions are active and the compressor is running.
The preceding messages are written down in order of priority.
The
UNIT CAPACITY
is written down on the bottom of the first
screen.
7 Press the
Ì
key to enter the next screen of the readout menu.
The
EXTRA READOUT
screens of the readout menu are
providing the following information:
• CURRENT : actual current, measured in Ampere ( A ) (only when
OP57 is installed)
•
VOLTAGE
: actual voltage (
V
) (only when OP57 is installed)
• RH11 / 12 / 21 / 22 : actual running hours ( h )
• C11 / 12 / 21 / 22C : actual running hours in cooling mode
•
C11
/
12
/
21
/
22H
: actual running hours in heating mode
•
CS11
/
12
/
21
/
22
: number of compressor start-ups
• RHP1 / 2 : actual running hours ( h ) of the pump 1 or 2
8 Press the
fi
key to return to the other readout menus.
Selecting cooling or heating operation
The "cooling/heating" menu allows the user to set the unit in cooling,
or heating operation.
The
COOLING/HEATING
menu provides information concerning the
selected mode:
■
COOLING
: cooling mode. The two cooling setpoints for both inlet
water temperature control and outlet water temperature control
can be used.
■
HEATING
: heating mode. The two heating setpoints for both
inlet water temperature control and outlet water temperature
control can be used.
To define cooling/heating operation, proceed as follows:
1 Enter the cooling/heating menu. Refer to the chapter "How to
enter a menu" on page 8 .
If the controller is already in the cooling/heating menu, position
the cursor in the upper left corner of the actual screen using the
K key.
2 Position the cursor behind
MODE
using the K key.
3 Select the appropriate setting using the h and g keys.
4 Press K to confirm the selection.
The cursor returns to the upper left corner of the screen.
NOTE For a DICN system, the
INLET WATER
and
OUTLET
WATER
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.
NOTE When
COOLING
or
HEATING
is selected on a unit in a
DICN system, this mode is transferred to all other
units.
NOTE
When a remote cool/heat switch is configured, the
cooling/heating mode is based on the switch status. In
this case the cooling mode or heating mode can not be
modified in the cooling/heating menu.