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Operation manual
1
EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22685-1B
C
ONTENTS
P
age
Introduction ....................................................................................... 1
Technical specifications ............................................................................. 1
Electrical specifications ............................................................................. 2
Important information regarding the refrigerant used ................................ 2
Description ........................................................................................ 3
Function of the main components.............................................................. 4
Safety devices............................................................................................ 4
Internal wiring - Parts table........................................................................ 5
Before operation................................................................................ 6
Checks before initial start-up ..................................................................... 6
Water supply.............................................................................................. 7
Power supply connection and crankcase heating...................................... 7
General recommendations ........................................................................ 7
Operation .......................................................................................... 7
Digital controller......................................................................................... 7
Working with the unit ................................................................................. 8
Advanced features of the digital controller............................................... 11
Troubleshooting............................................................................... 17
Maintenance.................................................................................... 20
Maintenance activities ............................................................................. 20
Disposal requirements............................................................................. 20
I
NTRODUCTION
This operation manual concerns packaged water-cooled water
chillers of the Daikin EWWD-MBYNN series. These units are
provided for indoor installation and used for cooling applications. The
EWWD units can be combined with Daikin fan coil units or air
handling units for air conditioning purposes. They can also be used
for supplying water for process cooling.
This manual has been prepared to ensure adequate operation and
maintenance of the unit. It will tell you how to use the unit properly
and will provide help if problems occur. The unit is equipped with
safety devices, but they will not necessarily prevent all problems
caused by improper operation or inadequate maintenance.
In case of persisting problems contact your local Daikin Dealer.
Technical specifications
(1)
EWWD120MBYNN EWWD280MBYNN EWWD500MBYNN
EWWD180MBYNN EWWD360MBYNN EWWD520MBYNN
EWWD240MBYNN EWWD440MBYNN EWWD540MBYNN
Packaged water-cooled water chillers
Operation manual
READ THIS MANUAL ATTENTIVELY BEFORE STARTING
UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN
YOUR FILES FOR FUTURE REFERENCE.
Before starting up the unit for the first time, make sure that
it has been properly installed. It is therefore necessary to
carefully read the installation manual supplied with the unit
and the recommendations listed in "Checks before initial
start-up" on page 6.
(1) Refer to the engineering data book for the complete list of specifications.
General
EWWD 120 180 240
Dimensions HxWxD
(mm)
1014x2672x930
Weight
• machine weight (kg)
1000 1273 1527
• operation weight (kg)
1032 1318 1588
Connections
• chilled water inlet
and outlet
(a)
(inch)
3" OD
(76 mm OD)
3" (88.9 mm OD)
• condenser water inlet
and outlet
(a)
(inch)
2-1/2" 3" (88.9 mm OD)
• pressure relief valve
condenser
(inch)
1x 1" 1x 1" 2x 1"
Compressor
Type
semi-hermetic single screw
Qtyxmodel
1x
ZHA5LMGUYE
1x
ZHA7MSGUYE
1x
ZHA7WSGUYE
Speed
(rpm)
2880
Oil type FVC 68D
Oil charge volume
(l)
7.5
+0.5
–0
10
+0.5
–0
10
+0.5
–0
Condensor
Type
shell & tube
Qty x model 1x CDEW215 1x CDEW260 1x CDEW400
Evaporator
Type
brased plate heatexchanger
Qtyxmodel
1x AC120EQ-NP156 1x AC250EQ-NP96 1x AC250EQ-NP128
General EWWD
280 360 440
Dimensions HxWxD
(mm)
1014x2672x
930
2000x2672x930
Weight
• machine weight (kg)
1623 2546 2800
• operation weight (kg)
1693 2636 2906
Connections
• chilled water inlet
and outlet
(a)
(inch)
3"
(88.9 mm OD)
2x 3" (2x 88.9 mm OD)
• condenser water inlet
and outlet
(a)
(a) Victaulic
®
coupling
(inch)
3"
(88.9 mm OD)
2x 3" (2x 88.9 mm OD)
• pressure relief valve
condenser
(inch)
2x 1" 2x 1" 3x 1"
Compressor
Type
semi-hermetic single screw
Qtyxmodel
1x
ZHA9LSGUYE
2x
ZHA7MSGUYE
1x ZHA7MSGUYE+
1x ZHA7WSGUYE
Speed
(rpm)
2880
Oil type FVC 68D
Oil charge volume
(l)
14
+0.5
–0
2x 10
+0.5
–0
2x 10
+0.5
–0
Condensor
Type shell & tube
Qtyxmodel 1x CDEW450 2x CDEW260
1x CDEW400
1x CDEW260
Evaporator
Type
brased plate heatexchanger
Qtyxmodel
1x AC250EQ-NP162 2x AC250EQ-NP96
1x AC250EQ-NP96
1x AC250EQ-NP128
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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