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Daikin EWWD360MBYN [16/24] Activating or deactivating the setpoints password
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Operation manual
15
EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22685-1B
Defining the network settings
The
screen of the user settings menu allows the user to
define the network settings.
■
: Define the number of slaves connected to the
master (
to
#
)
The
screen of the network menu allows the user to set the
of the unit, the
time and the condition when the pump
must operate.
■
: Define the mode of the unit as
,
or
.
•
: The unit is controlled by the network. Loading and
unloading is decided by the central control of the netwerk.
Putting this unit ON or OFF will also put all other units ON or
OFF, unless their status is
. (see
further)
Changing
or
to
this unit, will apply to all other units.
on such
a unit is not possible. Refer to "Defining and activating the control
mode" on page 13.
If the unit status is set to
, the LED of the d key is
flashing.
•
: The unit is considered as a
unit and its
function is then also simular to a unit defined as
, but
this unit however, will only come into operation if:
- another unit is in alarm
- another unit is in
mode
- the setpoint is not reached when all other units have been
running on full capacity for some time
If more than one unit is defined as
, only 1 of the units
will be really standby. The unit which is really standby will be
decided by the number of running hours.
If the unit status is set to
, the LED of the d key is
flashing.
•
: Putting this unit ON or OFF will not
put other units ON or OFF.
on such a unit
is possible.
If the unit is put to
, and the unit is ON, it
will be controlled by the DICN network as a
unit.
If the unit has status
, the LED of the d
key is off.
■
: The
time defines the target difference in
running hours between one unit and another unit with
$$$$ 1
. This value is important for maintenance
purposes. The difference in setting among different units should
be high enough as to avoid servicing of the units all at the same
time. The lower and upper limits are 0 and 9000 hours
respectively. The default value is 0 hours.
■
: Set if the pump must operate as long as the chiller
is ON (
), or during compressor on condition only
(
).
When
is selected, the voltage free contact S9L will
remain closed as long as the chiller is ON. When
is
selected, the voltage free contact S9L will open (pump will stop)
after the compressor stops, except if no other pump of the
system is running (meaning: in case all S9L contacts of other
chillers are already open).
Also refer to the separate manual "Installation examples for a DICN
configuration".
Activating or deactivating the setpoints password
The
screen of the user settings menu allows
the user to activate or deactivate the user password needed to
change the temperature setpoint. When deactivated, the user does
not have to enter the password each time he wants to change the
setpoint.
Defining BMS control
allows the user to control the unit from a supervisory system.
The
screen and
screen of the
service menu have to be used to set BMS parameters. Refer to
“Customization in the service menu” chapter “Defining the BMS
settings” in the installation manual.
Tasks of the timers menu
Checking the actual value of the software timers
As a protective measure and to ensure correct operation, the
controller's software features several countdown timers:
■ LOADUP (
– refer to the thermostat parameters): starts
counting when a thermostat step change has occurred. During
the countdown, the unit is not able to enter a higher thermostat
step.
■ LOADDOWN (
– refer to the thermostat parameters): starts
counting when a thermostat step change has occurred. During
the countdown, the unit will not be able to go to a lower thermo-
stat step.
■ FLOWSTART (
– 15 sec): counts down when the
water flow through the evaporator is continuous and the unit is in
standby. During the countdown, the unit cannot start up.
■ FLOWSTOP (
– 5 sec): starts counting when the
water flow through the evaporator stops after the flowstart timer
has reached zero. If the water flow has not restarted during the
countdown, the unit will shut down.
■ PUMPLEAD (
– refer to the pump control settings):
starts counting whenever the unit is switched on. During the
countdown, the unit cannot start up.
■ PUMPLAG (
– refer to the pump control settings):
starts counting whenever the unit is switched off. During the
countdown, the pump keeps running.
■ GUARDTIMER 1/2 (
.
– 60 sec): starts counting when the
compressor of circuit 1, respectively circuit 2 has been shut
down. During the countdown, the compressor cannot be
restarted.
■ STARTTIMER (
– 10 sec): starts counting
whenever a compressor starts up. During the countdown, no
other compressor can start up.
■ ANTIRECYCLING 1/2 (
.
– 600 sec): starts counting
when the compressor of circuit 1, respectively circuit 2 has
started. During the countdown, the compressor cannot be
restarted.
■ STARTUPTIMER 1/2 (
.
– 180 sec): starts
counting when the compressor of circuit 1, respectively circuit 2
has started. During the countdown, the compressor is limited to
a maximum capacitystep of 30%.
NOTE
Put a unit to
when servicing the
machine. In this case it is possible to switch ON or
OFF this unit without switching ON or OFF the other
units of the network.
It is also possible then to operate the unit in
.
Put a unit to
continuously if the
operator wants to decide by himself when this unit
must operate.
Note that in this case, it makes no sense to define
another unit of the network as
. Since there is
a unit set continuously to
, the
unit will continuously be considered as a
unit.
NOTE
The settings on this screen of the network menu must
be executed for all chillers connected to the system.
NOTE
If changed on one of the units in a DICN configuration,
this setting is automatically transferred to all the other
units in the network.
Содержание
- Operation manual 1
- Packaged water cooled water chillers 1
- Introduction 2
- Operation manual 2
- Technical specifications 2
- Electrical specifications 3
- Electrical specifications 3
- Gwp global warming potential 3
- Important information regarding the refrigerant used 3
- Periodical inspections for refrigerant leaks may be required depending on european or local legislation please contact your local dealer for more information 3
- Refrigerant type r134a 3
- This product contains fluorinated greenhouse gases covered by the kyoto protocol 3
- Value 1300 3
- Description 4
- Escription 4
- As the refrigerant circulates through the unit changes in its state or condition occur these changes are caused by the following main components 5
- Compressor the compressor m c acts as a pump and circulates the refrigerant in the refrigeration circuit it compresses the refri gerant vapour coming from the evaporator at the pressure at which it can easily be liquefied in the condenser 5
- Condenser the function of the condenser is to change the state of the refrigerant from gaseous to liquid the heat gained by the gas in the evaporator is discharged through the condenser to the ambient air and the vapour condenses to liquid 5
- Evaporator the main function of the evaporator is to take heat from the water that flows through it this is done by turning the liquid refrigerant coming from the condenser into gaseous refrigerant 5
- Expansion valve the liquid refrigerant coming from the condenser enters the evaporator via an expansion valve the expansion valve brings the liquid refrigerant to a pressure at which it can easily be evaporated in the evaporator 5
- Figure 5
- Filter drier the filter installed behind the condenser removes small particles from the refrigerant to prevent blockage of the tubes the drier takes water out of the system 5
- Flowswitch the flowswitch protects the evaporator of the unit against freezing when there is no waterflow or when the waterflow is too low 5
- Function of the main components 5
- Functional diagram 5
- Water in outlet connection the water inlet and outlet connection allow an easy connection of the unit to the water circuit of the air handling unit or industrial equipment 5
- Waterfilter the waterfilter protects the evaporator against clogging 5
- Internal wiring parts table 6
- Safety devices 6
- Before operation 7
- Checks before initial start up 7
- Efore operation 7
- Digital controller 8
- General recommendations 8
- Operation 8
- Peration 8
- Power supply connection and crankcase heating 8
- Water supply 8
- Connection to the unit 9
- How to enter a menu 9
- Setting the language 9
- Switching the unit off 9
- Switching the unit on 9
- Switching units on off in a dicn system 9
- Working with the unit 9
- Consulting actual operational information 10
- Selecting cooling or heating operation 10
- Adjusting the temperature setpoint 11
- Resetting the unit 11
- Advanced features of the digital controller 12
- All menus are directly accessible using the corresponding key on the digital controller the down arrow x on the display indicates that you can go to the next screen of the current menu using the h key the up arrow w on the display indicates that you can go to the previous screen of the current menu using the g key if c is displayed this indicates that you can either return to the previous screen or can go to the next screen 12
- Depending upon the settings in the user settings menu and on the selected cooling heating operation mode the setpoints menu can either be entered directly or by means of the user password 12
- Readout menu 12
- Setpoints menu 12
- The user settings menu protected by the user password allows a full customization of the units 12
- This chapter gives an overview and a brief functional description of the screens provided by the different menus in the following chapter you will find how you can set up and configure the unit using the various menu functions 12
- User settings menu 12
- Additionally the number of safeties that already occured can be consulted on the first line of the history screens 13
- Along with the basic information more detailed information screens can be consulted while the safety menu is active press the q key screens similar to the following will appear 13
- History menu 13
- Info menu 13
- Input output menu 13
- Safeties menu 13
- The history menu contains all the information concerning the latest shutdowns the structure of those menus is identical to the structure of the safeties menu whenever a failure is solved and the operator performs a reset the concerning data from the safeties menu is copied into the history menu 13
- The input output menu gives the status of all the digital inputs and the relay outputs of the unit 13
- The safeties menu provides useful information for trouble shooting purposes the following screens contain basic information 13
- Timers menu 13
- Cooling heating menu 14
- Defining and activating the control mode 14
- Entering the user settings menu 14
- Network menu 14
- User password menu 14
- Defining dual evaporator pump control 15
- Defining the capacity limitation settings 15
- Defining the display settings 15
- Defining the lead lag mode 15
- Defining the pump control settings 15
- Defining the schedule timer 15
- Defining the thermostat settings 15
- Activating or deactivating the setpoints password 16
- Checking the actual value of the software timers 16
- Defining bms control 16
- Defining the network settings 16
- Checking the safety info and the unit status after a reset 17
- Checking the status of the inputs and outputs 17
- Consulting additional unit information 17
- Listing activated safeties and checking the unit status 17
- Changing the user password 18
- Roubleshooting 18
- Troubleshooting 18
- Aintenance 21
- Disposal requirements 21
- Maintenance 21
- Maintenance activities 21
- Cooling inlet water temperature control of evaporator outlet water temperature control of evaporator 22
- Heating inlet water temperature control of condenser 22
- Schedule timer example 22
- Thermostat parameters 22
- Oftware structure 23
- Q q q q q 23
- Q q q q q q 23
- Pw22685 1b 24
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