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Daikin EWWD360MBYN [10/24] Consulting actual operational information
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Operation manual
9
EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22685-1B
Consulting actual operational information
1 Enter the readout menu. Refer to the chapter "How to enter a
menu" on page 8.
The controller automatically shows the first screen of the
readout menu which provides the following information:
•
or
or
: 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.
•
: actual inlet water temperature.
•
: actual outlet water temperature
(EWWD40~100) or mixed outlet water temperature
(EWWD120~200).
•
: actual condensor inlet water temperature.
2 Press the h key to enter the next screen of the readout menu.
This screen is only available for double circuit units.
This screen of the readout menu provides the following
information on the evaporator:
•
: actual outlet water temperature of circuit 1.
•
: actual outlet water temperature of circuit 2.
3 Press the h key to enter the next screen of the readout menu.
This screen of the readout menu provides the following
information on the condenser:
•
or
: 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.
•
: actual inlet water temperature.
4 Press the h key to enter the next screen of the readout menu.
The
screen of the readout menu provides
information concerning the status of the different circuits.
•
: actual status of circuit 1.
•
: actual status of circuit 2.
When the circuit is ON, the following status information may
appear.
•
: 40% - this percentage refers to the activated capacity of
that specific circuit.
When a circuit is OFF, the following status information may
appear.
•
: one of the circuit safety devices is
activated (refer to the chapter "Troubleshooting" on page 17).
•
: the circuit is limited by a remote contact.
•
: the actual value of one of the software timers
is not zero (refer to the "Timers menu" on page 12).
•
the circuit is ready to start up when extra
cooling load is needed.
The four preceding OFF messages are written down in order of
priority. If one of the timers is busy and one of the safeties is
active, the status information says
.
The
is the percentage indication of the actual
cooling or heating capacity of the unit.
5 Press the h key to enter the next screen of the readout menu.
The
screen of the readout menu provides
information concerning the pressures of the first circuit.
■
: high pressure of the refrigerant in circuit 1,
respectively circuit 2. The first number stands for the
pressure in bar, the second number stands for the saturation
temperature in degrees Celsius.
■
: low pressure of the refrigerant in circuit 1,
respectively circuit 2. The first number stands for the
pressure in bar, the second number stands for the saturation
temperature in degrees Celsius.
6 Press the h key to enter the next screen of the readout menu.
(Only for EWWD360~540.)
The
screen of the readout menu provides
information concerning the pressures of the second circuit.
7 Press the h key to enter the next screen of the readout menu.
This menu is available if voltage and current transmitters are
installed. This readout menu provides information concerning
the voltage and the compressor current.
8 Press the h key to enter the next screen of the readout menu.
To consult actual operational information about the total running
hours of the compressors.
9 Press the g 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,
heating or double thermostat operation.
The
menu provides information concerning the
selected operation mode.
■
: cooling mode. The two setpoints for both
inlet water temperature control of evaporator and outlet water
temperature control of evaporator can be used.
■
: heating mode. The two setpoints for inlet
water temperature control of condenser can be used.
■
: double thermostat mode. The two
setpoints for both inlet water temperature control of
evaporator and of condenser can be used.
If double thermostat is selected, a load-up of thermostat steps is
performed in case the evaporator and the condenser inlet water
thermostat indicate a load-up. A load-down of thermostat steps is
performed in case the evaporator or the condenser inlet water
thermostat indicate a load-down.
To define cooling/heating operation, proceed as follows:
1 Enter the cooling/heating menu.
If the controller is already in the cooling/heating menu, position
the cursor in the upper left corner of the actual screen using the
q key.
2 Position the cursor behind
using the q key.
3 Select the appropriate setting using the h and g keys.
4 Press q to confirm the selection.
The cursor returns to the upper left corner of the screen.
NOTE
For a DICN system, the
,
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 a circuit in is in a high pressure setback, the
indication of capacity will be flashing. A high pressure
setback is a prevention of load-up or a forced load-
down caused by a too high pressure.
NOTE
When "cooling", "heating" or "double thermostat" is
selected on a unit in a DICN system, this mode is
transferred to all other units.
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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