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Operation manual

1

EWWD120~540MBYNN

Packaged water-cooled water chillers

4PW22685-1

C

ONTENTS

Page

Introduction ....................................................................................... 1

Technical specifications ............................................................................. 1
Electrical specifications ............................................................................. 2

Description ........................................................................................ 3

Function of the main components.............................................................. 4
Safety devices............................................................................................ 5
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 ZHA 

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

Summary of Contents for EWWD120MBYNN

Page 1: ...OPERATION MANUAL EWWD120MBYNN EWWD180MBYNN EWWD240MBYNN EWWD280MBYNN EWWD360MBYNN EWWD440MBYNN EWWD500MBYNN EWWD520MBYNN EWWD540MBYNN Packaged water cooled water chillers...

Page 2: ...Y 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 m...

Page 3: ...0 Condensor Type shell tube Qtyxmodel 2x CDEW400 1x CDEW400 1x CDEW450 2x CDEW450 Evaporator Type brased plate heatexchanger Qtyxmodel 2x AC250EQ NP128 1x AC250EQ NP128 1x AC250EQ NP162 2x AC250EQ NP...

Page 4: ...harge stopvalve 3 Condenser 19 Condensor entering water temperature sensor 4 Switchbox 20 Digital display controller 5 Compressor switchbox 21 Emergency stop 6 Air purge condenser 22 Power supply inta...

Page 5: ...ion 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 Water in outlet connection...

Page 6: ...essure relief safety valve The safety valve is activated when the pressure in the refrigerant circuit becomes too high If this occurs shut down the unit and contact your local dealer High pressure swi...

Page 7: ...ield wiring Make sure that the field wiring between the local supply panel and the unit has been carried out according to the instructions described in the installation manual according to the wiring...

Page 8: ...phanumeric display may decrease at low temperatures OPERATION The EWWD120 540 units are equipped with a digital controller offering a user friendly way to set up use and maintain the unit This part of...

Page 9: ...tialization cycle is started Once all the timers have reached zero the unit starts up When the remote ON OFF control parameter is set to YES the following table applies 2 If the water chiller does not...

Page 10: ...frigerant 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...

Page 11: ...rcuits The red LED inside the p key lights up and the buzzer inside the controller is activated When a circuit safety occurs the compressor of the corresponding circuit is shut down The screen of the...

Page 12: ...n the first screen of the network menu To consult information about the outlet water temperature of the evaporator of circuit 1 and 2 only for EWWD360 540 To consult information about the unit status...

Page 13: ...information about the network safety which caused the shutdown To consult information about the dual pump wich caused the shutdown To check the time and control mode at the moment of the unit shutdown...

Page 14: ...evaporator and or condenser entering water temperature to control the capacity of the unit outlet control mode uses the evaporator leaving water temperature to control the capacity of the unit To chec...

Page 15: ...their setting needs to be reset to See User settings menu on page 11 The screen of the user settings menu allows the user to define the schedule timer settings Each day of the week can be appointed to...

Page 16: ...rd 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 par...

Page 17: ...the latest shutdown To check the safety info and the unit status proceed as follows 1 Enter the Refer to the chapter How to enter a menu on page 8 The controller enters the last screen which contains...

Page 18: ...e g and h keys 6 Press q to confirm the new password When the new password has been confirmed the controller will ask to enter the new password a second time for safety reasons The cursor is positione...

Page 19: ...panel or measure the supply voltage Voltage too low Measure the supply voltage Overload of motor Reset If the failure persists call your local dealer RESET Push the blue button on the over current rel...

Page 20: ...apacity of the unit is too low Call your local dealer Water flow is too high Recalculate the water flow The circuit is limited Check the enable disable capacity limitation remote contact POSSIBLE CAUS...

Page 21: ...perly and that the earth terminals are tightened Refrigerant circuit Check for leaks inside the unit In case a leak is detected call your local dealer Check the working pressure of the unit Refer to p...

Page 22: ...to the settings in group 2 all Saturdays and Sundays will work according to the settings in group 3 all holiday days will work according to the settings in the holiday group All group settings of gro...

Page 23: ...1 1 q h q q g h h h g h g h g h g h h g h g 2 0 1 1 1 1 g g h g g h g h g h g h g h g h g g h g h g h g h h g g 1 f 3 3 1 4 3 3 1 3 3 3 3 3 3 3 3 3 2 3 3 3 3 g h g h g h q h h g q h g h g h g h g h g...

Page 24: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW22685 1...

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