Daikin Ewwp045kaw1m User manual

OPERATION MANUAL

EWWP045KAW1M

EWWP055KAW1M

EWWP065KAW1M

ECB1MUW

ECB2MUW

ECB3MUW

Packaged water-cooled water chillers

Operation manual

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

ONTENTS

Page

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

Technical speciﬁcations ............................................................................. 1

Electrical speciﬁcations ............................................................................. 2

Description ........................................................................................ 2

Function of the main components.............................................................. 3

Safety devices............................................................................................ 4

Internal wiring - Parts table........................................................................ 4

Before operation................................................................................ 5

Checks before initial start-up ..................................................................... 5

Water supply.............................................................................................. 5

General recommendations ........................................................................ 5

Operation 16~24Hp........................................................................... 5

Digital controller......................................................................................... 5

Working with the 16~24Hp units................................................................ 6

Advanced features of the digital controller................................................. 8

Operation 32~72Hp......................................................................... 12

Digital controller....................................................................................... 12

Working with the 32~72Hp units.............................................................. 12

Advanced features of the digital controller............................................... 14

Troubleshooting............................................................................... 19

Maintenance.................................................................................... 20

Important information regarding the refrigerant used .............................. 20

Maintenance activities ............................................................................. 20

Disposal requirements............................................................................. 20

NTRODUCTION

This operation manual concerns packaged water-cooled water

chillers of the Daikin EWWP-KA series. These units are provided for

indoor installation and used for cooling and/or heating applications.

The 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 dealer.

Technical speciﬁcations

(1)

EWWP045KAW1M ECB1MUW

EWWP055KAW1M ECB2MUW

EWWP065KAW1M ECB3MUW

Packaged water-cooled water chillers

Operation manual

READ THIS MANUAL ATTENTIVELY BEFORE STARTING

UP THE UNIT. DO NOT THROW THIS MANUAL AWAY.

KEEP IT IN YOUR FILES FOR FUTURE REFERENCE.

Read the chapter "User settings menu" on page 14 before

changing the parameters.

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 5.

(1) Refer to the engineering data book for the complete list of speciﬁcations.

General

Hp 16 20 24 32 36 40 44 48 52 56 60 64 68 72

Nominal cooling

capacity

(a) (kW)

43.0 56.0 65.0 86 99 112 121 130 142 155 168 177 186 195

Nominal input

(b) (kW)

12.1 16.0 18.3 24.2 28.1 32.0 34.3 36.6 40.2 44.1 48.0 50.3 52.6 54.9

Dimensions HxWxD

(mm)

600 x 600 x 1200 1200 x 600 x 1200 1800 x 600 x 1200

Machine weight

(kg)

300 320 334 600 620 640 654 668 920 940 960 974 988 1002

Connections

•water inlet (inch)

2x FBSP 1.5" 2x 2x FBSP 1.5" 3x 2x FBSP 1.5"

•water outlet (inch)

2x FBSP 1.5" 2x 2x FBSP 1.5" 3x 2x FBSP 1.5"

Compressor

Type hermetically sealed scroll

Qty x model

JT212DA-YE 2x

JT300DA-YE 2x

JT335DA-YE 4x

JT212DA-YE

+ 2x

JT300DA-YE

+ 2x

JT335DA-YE

JT212DA-YE

+ 2x

JT300DA-YE

JT212DA-YE

+ 4x

JT300DA-YE

+ 2x

JT335DA-YE

JT300DA-YE

+ 4x

JT335DA-YE

Speed

(rpm)

2900 2900 2900

Oil type FVC 68D FVC 68D FVC 68D

Oil charge volume

(l)

2x 2.7 4x 2.7 6x 2.7

Evaporator

Type brased plate heat exchanger

Qty 12 3

Nominal water ﬂow

(l/min)

123 161 186 247 284 321 347 373 407 444 482 507 533 559

Water ﬂow range

(l/min)

62 -247 80 - 321 93 - 373 123 - 493 142 - 568 161 - 642 173 -694 186 - 745

204 - 814 222 - 889 241 -963 254-1015 267-1066 280-1118

Condenser

Type brased plate heat exchanger

Qty 12 3

Nominal water ﬂow

(l/min)

157 205 237 314 362 410 442 474 519 567 614 647 679 711

Water ﬂow range

(l/min)

79 - 314 102 - 410 118 - 474 157 - 629 181 -724 205 - 819 221 - 883 237 - 948

260-1038 283-1133 307-1229 323-1293 339-1357 355-1422

(a) The nominal cooling capacity is based on:

-entering water temperature of 12°C

-chilled water temperature of 7°C

-condenser in/out water temperature of 30/35°C

(b) The nominal input includes total input of the unit: compressor, control circuit and water pumps.

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

Electrical speciﬁcations

(1)

ESCRIPTION

Figure -

Main components

Required space around the unit for service

(1) Refer to the engineering data book for the complete list of speciﬁcations.

General

Hp 16 20 24 32 36 40 44 48 52 56 60 64 68 72

Power supply

• Phase

3N~ 3N~ 3N~

•Frequency (Hz)

50 50 50

•Voltage (V)

400 400 400

•Voltage tolerance (%)

±10 ±10 ±10

Unit

• Nominal running

current (A)

20.8 26.6 30.0 41.6 47.0 52.4 56.2 60.0 67.8 73.2 78.6 82.4 86.2 90.0

• Maximum running

current (A)

28 36 40 56 64 72 76 80 92 100 108 112 116 120

• Recommended fuses

according to IEC 269-2 (A)

3x 35 3x 40 3x 50 3x 63 3x 63 3x 80 3x 80 3x 80 3x 100 3x 100 3x 125 3x 125 3x 125 3x 125

Compressor

• Phase

3~ 3~ 3~

•Frequency (Hz)

50 50 50

•Voltage (V)

400 400 400

• Nominal running

current (A)

10.4 13.1 15.0 10.4 10.4/13.1 13.1 13.1/15 15

10.4/13.1 10.4/13.1

13.1 13.1/15 13.1/15 15

27 11

500 500

500

25 16

28 8

52~72Hp

32~48Hp

16~24Hp

Compressor

Condenser water in 2

Evaporator

Condenser water in 3

Condenser

Evaporator entering water temperature sensor 1

Switchbox

Evaporator entering water temperature sensor 2

Chilled water in 1

Evaporator entering water temperature sensor 3

Chilled water in 2

Freeze up sensor 1

Chilled water in 3

Freeze up sensor 2

Chilled water out 1

Freeze up sensor 3

Chilled water out 2

Condenser entering water temperature sensor 1

Chilled water out 3

Condenser entering water temperature sensor 2

Condenser water out 1

Condenser entering water temperature sensor 3

Condenser water out 2

Digital display controller 16~24Hp

Condenser water out 3

Digital display controller 32~72Hp

Condenser water in 1

Power supply intake

Operation manual

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Function of the main components

Figure -

Functional diagram

As the refrigerant circulates through the unit, changes in its state or

condition occur. These changes are caused by the following main

components:

■

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 to a pressure at

which it can easily be liquiﬁed in the condenser.

■

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 and the

vapour condenses to liquid.

■

Filter

The ﬁlter installed behind the condenser removes small particles

from the refrigerant to prevent blockage of the tubes.

■

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.

■

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.

■

Water inlet/outlet connection

The water inlet and outlet connections allow an easy connection

of the unit to the water circuit of the air handling unit or industrial

equipment.

S4LP

S1HP

S5LP

S2HP

R3T

R4TR5T

Q2D

Q1D

M2C

M1C

S4LP

S1HP

S5LP

S2HP

R3T

R4TR5T

Q2D

Q1D

M2C

M1C

S4LP

S1HP

S5LP

S2HP

R3T

R4TR5T

Q2D

Q1D

M2C

M1C

52~72Hp

32~48Hp

16~24Hp

Condenser

Filter

Water

inlet

Water

outlet

Water

inlet

Water

outlet

Evaporator

Filter

Compressor

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

Safety devices

■

Overcurrent relay

The overcurrent relay (K*S) is located in the switch box of the

unit and protects the compressor motor in case of overload,

phase failure or too low voltage.The relay is factory-set and may

not be adjusted. When activated, the overcurrent relay has to be

reset in the switch box and the controller needs to be reset

manually.

■

High-pressure switch

The high-pressure switch (S*HP) is installed on the discharge

pipe of the unit and measures the condenser pressure (pressure

at the outlet of the compressor). When the pressure is too high,

the pressure switch is activated and the circuit stops.

When activated, it resets automatically, but the controller needs

to be reset manually.

■

Low pressure switch

The low-pressure switch (S*LP) is installed on the suction pipe

of the unit and measures the evaporator pressure (pressure at

the inlet of the compressor). When the pressure is too low, the

pressure switch is activated and the circuit stops.

When activated, it resets automatically, but the controller needs

to be reset manually.

■

Reverse phase protector

The reverse phase protector (R1P) is installed in the switch box

of the unit. It prevents the compressor from running in the wrong

direction. If the unit does not start, two phases of the power

supply must be inverted.

■

Discharge thermal protector

The discharge thermal protector (Q*D) is activated when the

temperature of the refrigerant leaving the compressor becomes

too high. When the temperature returns to normal, the protector

resets automatically, but the controller needs to be reset

manually.

■

Freeze-up protection

The freeze-up protection prevents the water in the evaporator

from freezing during operation. When the outlet water

temperature is too low, the controller disables the circuit. When

the outlet water temperature returns to normal, the circuit can

start up again.

When freeze-up protection occurs several times in a certain

period, the freeze-up alarm will be activated and the circuit will

be shut down. The cause of freezing up should be investigated

and after outlet water temperature has risen enough, the alarm

indicator on the controller needs to be reset manually.

■

Additional interlock contact

To avoid that the unit could be started or run without water

circulating through the water heat exchanger, an interlock

contact (S11L) of e.g. a ﬂow switch must be installed in the start-

up circuit of the unit.

Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit. The

abbreviations used are listed below:

A1P........................ PCB terminal unit

A2P.................**.... PCB address card

F1,2,3U...........# .... Main fuses for the unit

F5B,F6B ................ Automatic fuse for the control circuit/secondary

of TR1

F8U........................ Surge-proof fuse

F9U.................## .. Surge-proof fuse

H1P.................* ..... Indication lamp alarm

H3P.................* ..... Indication lamp operation compressor (M1C)

H4P........................ Indication lamp operation compressor (M2C)

K1A........................ auxiliary contactor for alarm (for 16~24Hp only)

K1A........................ auxiliary contactor for high pressure

(for 32~72Hp only)

K1M ....................... Compressor contactor (M1C)

K1P ................ * .....Pumpcontactor

K2M........................Compressor contactor (M2C)

K4S ........................Overcurrent relay (M1C)

K5S ........................Overcurrent relay (M2C)

K19T ......................Timer, time delay for M2C

M1C,M2C...............Compressor motor

PE ..........................Main earth terminal

Q1D........................Discharge thermal protector (M1C)

Q2D........................Discharge thermal protector (M2C)

R1P........................Reverse phase protector

R3T ........................Evaporator inlet water temperature sensor

R4T ........................Evaporator outlet water temperature sensor

(Freeze up sensor)

R5T ........................Condenser inlet temperature sensor

S1HP,S2HP............High pressure switch

S4LP,S5LP.............Low pressure switch

S7S ........................Switch for remote cooling/heating selection

(for 16~24Hp only)

S7S ........................Changeable digital input 1(for 32~72Hp only)

S9S ................ * .....Switch for remote start/stop (for 16~24Hp only)

S9S ................ * .....Changeable digital input 2 (for 32~72Hp only)

S10L............... #.....Flowswitch

S11L............... #.....Contact that closes if the pump is working

S12S .............. #.....Main isolator switch

TR1 ........................Transfo 230 V

➞

24 V for power supply of

controllers

Y1R........................Reversing valve

Y1S ........................Solenoid valve for injection line

...........................Connector for digital inputs, analog inputs, analog

outputs and for power supply controller (A1P)

X2...........................Connector for digital outputs (A1P)

X3...........................Connector for (A1P)

X4,X5,X6................Interconnection connector Main

↔

Control

switchbox

Terminal unit: Digital Inputs

X1 (ID1-GND) ........ﬂowswitch

X1 (ID2-GND) ........remote cooling/heating selection

X1 (ID3-GND) ........high pressure switch + discharge protector +

overcurrent

X1 (ID4-GND) ........low pressure switch

X1 (ID5-GND) ........remote On/Off

Terminal unit: Digital outputs (relays)

X2 (C1/2-NO1).......compressor M1C on

X2 (C1/2-NO2).......compressor M2C on

X2 (C3/4-NO3).......voltage free contact for pump

X2 (C3/4-NO4).......voltage free contact for reversing valve

X2 (C5-NO5)..........alarm voltage free contact

Terminal unit: Analog inputs

X1 (B1-GND)..........evaporator inlet water temperature

X1 (B2-GND)..........evaporator outlet water temperature (Freeze up

sensor)

X1 (B3-GND)..........condenser inlet water temperature

Not included with standard unit

Not possible as option Possible as option

Obligatory # ##

Not obligatory * **

Operation manual

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

EFORE

OPERATION

Checks before initial start-up

After the installation of the unit, check the following before switching

on the circuit breaker:

Field 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

diagrams and according to European and national regulations.

Additional interlock contact

An additional interlock contact S11L should be provided (e.g.

ﬂow switch, contact of pump motor contactor). Make sure that it

has been installed between the appropriate terminals (refer to

the wiring diagram supplied with the unit). S11L should be a

normal open contact.

Fuses or protection devices

Check that the fuses or the locally installed protection devices

are of the size and type speciﬁed in the installation manual.

Make sure that neither a fuse nor a protection device has been

bypassed.

Earth wiring

Make sure that the earth wires have been connected properly

and that the earth terminals are tightened.

Internal wiring

Visually check the switch box on loose connections or damaged

electrical components.

Fixation

Check that the unit is properly ﬁxed, to avoid abnormal noises

and vibrations when starting up the unit.

Damaged equipment

Check the inside of the unit on damaged components or

squeezed pipes.

Refrigerant leak

Check the inside of the unit on refrigerant leakage. If there is a

refrigerant leak, call your local dealer.

Oil leak

Check the compressor on oil leakage. If there is an oil leak, call

your local dealer.

Power supply voltage

Check the power supply voltage on the local supply panel. The

voltage should correspond to the voltage on the identiﬁcation

label of the unit.

Water supply

Fill the water piping, taking into account the minimum water volume

required by the unit. Refer to the "installation manual".

Make sure that the water is of the quality as mentioned in the

installation manual.

Purge the air at the high points of the system and check the operation

of the circulation pump and the ﬂow switch.

General recommendations

Before switching on the unit, read following recommendations:

When the complete installation and all necessary settings have

been carried out, close all front panels of the unit.

2The service panels of the switch boxes may only be opened by a

licensed electrician for maintenance purposes.

OPERATION 16~24HP

The 16~24Hp units are equipped with a digital controller offering a

user-friendly way to set up, use and maintain the unit.

This part of the manual has a task-oriented, modular structure. Apart

from the ﬁrst section, which gives a brief description of the controller

itself, each section or subsection deals with a speciﬁc task you can

perform with the unit.

Digital controller

User interface

The digital controller consists of a numeric display, four labelled keys

which you can press and four LEDs providing extra user information.

Figure : Digital controller

Keys provided on the controller:

Each key, except for the lower left key, combines two functions: E/

O, A/ Yand I/ Z. The function carried out when the user

presses one of these keys depends on the status of the controller

and the unit at that speciﬁc moment.

LEDs provided on the controller:

Make sure that the circuit breaker on the power supply

panel of the unit is switched off.

Ekey, to enter the scroll list of user parameters, to conﬁrm a

parameter modiﬁcation and to return to normal operation.

Okey, to de-activate the buzzer in the case of an alarm.

Akey, to scroll through the list of direct or user parameters or to

raise a setting.

Ykey, to start the unit in heating mode or to switch the unit off when

heating mode is active.

Rkey, to enter the scroll list of direct parameters or to switch

between a parameter's code and its value.

Ikey, to start the unit in cooling mode or to switch the unit off when

cooling mode is active.

Zkey, to scroll through the list of direct or user parameters or to

lower a setting.

LEDs, indicates the status of the compressor 1 (left LED) and

compressor 2 (right LED). The TLEDs do not light up when the

compressor is not active, blinks when the compressor cannot start

up although extra load is requested (e.g. timer active) and lights

up permanently when the compressor is active.

YLED, indicates that heating mode is active.

ILED, indicates that cooling mode is active.

ULED, indicates that the value on the numeric display should be

multiplied by 100.

comp

100

clear

PRG

mute

SEL

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

Direct and user parameters

The digital controller provides direct and user parameters. The direct

parameters are important for the everyday usage of the unit, e.g. to

adjust the temperature setpoint or to consult actual operational

information. The user parameters on the contrary provide advanced

features such as adjusting time delays or disabling the buzzer.

Each parameter is deﬁned by a code and a value. For example, the

parameter used to select local or remote on/off control has code h7

and value 1or 0.

Working with the 16~24Hp units

This chapter deals with the everyday usage of the unit. Here, you will

learn how to perform routine tasks, such as:

■"Switching the unit on" on page 6 and "Switching the unit off" on

page 6,

■"Adjusting the cooling temperature setpoint" on page 6 and

"Adjusting the heating temperature setpoint" on page 7,

■"Consulting actual operational information" on page 7,

■"Resetting alarms" on page 7,

■"Resetting warnings" on page 8.

Switching the unit on

To switch the unit on, proceed as follows:

1When the on/off digital input user parameter h7 is set to 0(=No),

press the Ikey for approximately 5 seconds to switch the unit

on in cooling mode (inlet water temperature control of

evaporator) or press the Ykey for approximately 5 seconds to

switch the unit on in heating mode (inlet water temperature

control of condenser).

When the on/off digital input user parameter h7 is set to

1(=Yes), you can also switch the unit on using the remote on/off

switch (installed by the customer).

In both cases an initialization cycle is started and the TLED

starts blinking. The ILED or the YLED lights up, indicating

whether cooling or heating mode is selected. Once all the timers

have reached zero, the unit starts up and the TLED lights up

permanently. The numeric display shows the actual inlet water

temperature of the evaporator in cooling mode or the actual inlet

water temperature of the condenser in heating mode.

2When the unit is started up for the ﬁrst time, or when the unit has

been out of operation for a longer period, it is recommended to

go through the following checklist.

Abnormal noise and vibrations

Make sure the unit does not produce any abnormal noises or

vibrations: check the ﬁxations and piping. If the compressor

makes any abnormal noises, this may also be caused by an

overcharge of refrigerant.

Working pressure

It is important to check the high and low pressure of the

refrigerant circuit to ensure the proper operation of the unit and

to guarantee that the rated output will be obtained.

3If the unit does not start after a few minutes, consult the actual

operational information available in the list of direct parameters.

Also refer to the chapter "Troubleshooting" on page 19.

Switching the unit off

To switch the unit off, proceed as follows:

1When the on/off digital input user parameter h7 is set to 0(=No)

and the unit is on, press the Ikey for approximately 5 seconds

to switch the unit off.

The ILED and the TLED are extinguished.

2When the on/off digital input user parameter h7 is set to 0(=No)

and heating mode is active, press the Ykey for approximately 5

seconds to switch the unit off.

The YLED and the TLED are extinguished.

3When the on/off digital input user parameter h7 is set to

1(=Yes), switch the unit off using the remote on/off switch.

The ILED or the YLED (depending on the active mode) and

the TLED are extinguished.

Adjusting the cooling temperature setpoint

The units enable deﬁnition and modiﬁcation of the cooling

temperature setpoint. The default, limit and step values for the

cooling setpoint are:

■Default value 12.0°C

■Limit values 7.0to 25.0°C

■Step value 0.1°C

To adjust the cooling temperature setpoint, proceed as follows:

1Press the Rkey for approximately 5 seconds to enter the list of

direct parameters.

The direct parameter code r1 deﬁning the cooling temperature

setpoint appears on the display.

2Press the Rkey.

The actual cooling temperature setpoint appears on the display.

3Press the Aor Zkey to raise, respectively lower the

temperature setting.

4Press the Rkey to return to parameter code r1.

5To save the adjusted temperature setpoint, press the Ekey. To

cancel the modiﬁcation wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of direct parameters and returns to its normal operation,

displaying the inlet water temperature.

In the second case the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of direct

parameters without saving the modiﬁed parameter. The inlet

water temperature reappears on the display.

NOTE Temperature readout tolerance: ±1°C.

Legibility of the numeric display may decrease in direct

sunlight.

The pressures measured will vary between a maximum

and minimum value, depending on the water and outdoor

temperatures (at the moment of measurement).

NOTE In case of remote on/off control (h7=1), it is recom-

mended to install an on/off switch near the unit in

series with the remote switch. The unit can then be

switched off from either place.

The selection of cooling mode or heating mode can only

be carried out at startup.

Selecting an opposite mode without switching the unit off is

impossible.

NOTE By pressing any button while the display is ﬂashing

and cancelling of all changes is in progress, the can-

celling process is stopped, the display stops ﬂashing

and the user can continue to change the settings.

Operation manual

7EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Adjusting the heating temperature setpoint

In addition to the cooling setpoint, the 16~24Hp units enable

deﬁnition of a temperature setpoints for heating operation. The

default, limit and step values for the heating setpoint are:

■Default value 30°C

■Limit values 15 to 50 °C

■Step value from 15.0to 19.9°C 0.1°C

from 20 to 50°C 1°C

To adjust the heating temperature setpoint, proceed as follows:

1Press the Rkey for approximately 5 seconds to enter the list of

direct parameters.

The direct parameter code r1 deﬁning the cooling temperature

setpoint appears on the display.

2Press the Akey twice.

The direct parameter code r3 deﬁning the heating temperature

setpoint appears on the display.

3Press the Rkey.

The actual heating temperature setpoint appears on the display.

4Press the Aor Zkey to raise, respectively lower the

temperature setting.

5Press the Rkey to return to parameter code r3.

6To save the adjusted temperature setpoint, press the Ekey. To

cancel the modiﬁcation wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of direct parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of direct

parameters without saving the modiﬁed parameter. The inlet

water temperature reappears on the display.

Consulting actual operational information

The actual operational information that can be consulted in the list of

direct parameters consists of:

■r6 : outlet water temperature evaporator,

■r8 : when cooling mode is active: inlet water temperature of the

condenser,

when heating mode is active: inlet water temperature of the

evaporator,

■c9 : total running hours of the compressor1,

■ca : total running hours of the compressor2,

■cv : total running hours of the pump.

To consult the actual operational information, proceed as follows:

1Press the Rkey for approximately 5 seconds to enter the list of

direct parameters.

The direct parameter code r1 deﬁning the cooling temperature

setpoint appears on the display.

2Depending on the information to be consulted, select parameter

code r6, r8, c9, ca or cv using the Aand/or Zkey.

3Press the Rkey to consult the actual value of the selected

parameter.

4Press the Rkey to return to the parameter codes.

5To consult other actual operational information, repeat from

instruction 2 onwards.

6To return to normal operation, press the Ekey or wait

approximately 40 seconds.

In the ﬁrst case, the controller immediately leaves the list of

direct parameters and returns to normal operation displaying the

inlet water temperature.

In the second case, the display will start ﬂashing. Approximately

40 seconds later, the controller leaves the list of direct para-

meters. The inlet water temperature reappears on the display.

Resetting alarms

When an alarm is detected, the following happens:

■the buzzer is activated (if enabled by means of user parameter p4),

■the alarm relay is energized,

■the display starts ﬂashing, alternately showing the alarm code

and the inlet water temperature.

The following alarm codes may appear on the screen:

■a1: indicates an anti-freeze alarm,

■e1:indicates that the NTC probe used to measure the

evaporator inlet water temperature is defective,

■e2:indicates that the NTC probe used to measure the outlet

water temperature is defective,

■e3:indicates that the NTC probe used to measure the

condenser inlet water temperature is defective,

■ee,ep:indicates that the EEPROM on the controller PCB inside the

unit is defective,

■ei,e0:indicates that the supply voltage is exceedingly low (ei) or

exceedingly high (e0). In these cases contact a licensed

electrician,

■el:indicates that the power supply has a "remarkable noise". In

this case contact a licensed electrician,

■fl:indicates that there was no water flow either during the

period of 15 seconds after the pump was started or for 5

seconds while the compressor is active,

■h1:indicates that a high pressure switch, the discharge thermal

protection or the overcurrent protection of the compressor

motor is activated,

■l1: indicates that the low pressure switch is activated.

To reset an alarm, proceed as follows:

1Press the Okey to acknowledge the alarm.

The buzzer is de-activated.

2Find the cause of shutdown and correct.

Refer to the chapter "Troubleshooting" on page 19.

3If the alarm codes a1, fl, h1 or l1 appear on the display, reset

the alarm manually by pressing the Aand Zkey

simultaneously for approximately 5 seconds.

In all other cases the alarm is reset automatically.

Once the alarm is reset, the error code no longer appears on the

display. The controller continues its normal operation, displaying

the inlet water temperature.

NOTE To reset the timers c9, ca and cv, refer to chapter

"Resetting warnings" on page 8.

NOTE If the alarm codes fl and h1 are ﬂashing alternately,

the alarm is most probably caused by the reverse

phase protector.

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

Resetting warnings

During normal operation, the display of the controller may start

ﬂashing, alternately showing the inlet water temperature and the

following warning code:

■n1:indicates that the compressor1 requires maintenance: the

total running hours of the compressor1 (direct parameter c9)

has exceeded the setting of the timer threshold for

maintenance warning (user parameter cb).

■n2:indicates that the compressor2 requires maintenance: the

total running hours of the compressor2 (direct parameter ca)

has exceeded the setting of the timer threshold for

maintenance warning (user parameter cb).

To reset the maintenance warning n1 or n2, proceed as follows:

1Enter the list of direct parameters by pressing the Rkey for

approximately 5 seconds.

The parameter code r1 appears on the display.

2Select parameter code c9 or ca using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Press the Aand Zkeys simultaneously for approximately

5 seconds.

The timer's value becomes 0.

5Press the Rkey to return to parameter code c9 or ca.

6Press the Ekey to return to normal operation.

Advanced features of the digital controller

This chapter gives an overview of the direct parameters and user

parameters provided by the controller. In the following chapter, you

will learn how you can set up and conﬁgure the unit using these

parameters.

Overview of the direct parameters

The list of direct parameters is accessible by pressing the Rkey for

approximately 5 seconds.

When scrolling through the list of direct parameters using the Aand/

or Zkey, the parameters appear in the following order:

■r1: to deﬁne the cooling temperature setpoint,

■r2: to deﬁne the cooling temperature difference,

■r3: to deﬁne the heating temperature setpoint,

■r4: to deﬁne the heating temperature difference,

■r6: to check the evaporator outlet water temperature,

■r8:when cooling mode is active: inlet water temperature of the

condenser,

when heating mode is active: inlet water temperature of the

evaporator,

■c9: to check the total running hours of the compressor1,

■ca: to check the total running hours of the compressor2,

■cv: to check the total running hours of the pump.

Overview of the user parameters

The list of user parameters is only accessible by means of the user

password. When scrolling through the list of parameters using the A

and/or Zkey, you see the direct parameters and user parameters.

The user parameters appear in the following order:

■:d: to deﬁne the measurement unit (°C or °F),

■c7:to deﬁne the time delay between the pump startup and the

compressor startup,

■c8:to deﬁne the time delay between the unit shutdown and the

pump shutdown,

■cb: to deﬁne the time threshold for maintenance warning,

■p4:to disable the buzzer or to deﬁne the activation period of the

buzzer in case of an alarm,

■h6: to activate or to deactivate the remote cool/heat control,

■h7: to activate or de-activate the remote on/off control,

■h9: to lock or unlock the controller keyboard,

■ha: to deﬁne the unit's serial address,

■h8,hb,c6: not used.

Tasks carried out using direct parameters

Entering the list of direct parameters

1Press the Rkey for approximately 5 seconds.

The controller enters the list of direct parameters, displaying

parameter code r1.

Deﬁning the cooling temperature difference

To control the cooling load, the unit is equipped with a two-step

thermostat. The thermostat's "cooling temperature difference" can

be modiﬁed by means of direct parameter r2.

The default, limit and step values are:

■Default value 3.0°C

■Limit values 0.3to 19.9°C

■Step value 0.1°C

To deﬁne the cooling temperature difference, proceed as follows:

1Enter the list of direct parameters.

2Press the Akey once.

Direct parameter code r2 appears on the display.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to switch to the list of parameter codes.

6To adjust or to consult other direct parameters before saving the

modiﬁcations, select another direct parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

NOTE Do not forget to carry out the required maintenance

activities after resetting the timers.

Besides resetting timer c9 (running hours of the

compressor 1) and ca (running hours of the

compressor 2), it is also possible to reset timer cv

which deﬁnes the total running hours of the pump. To

do this, consult the timer's value (refer to paragraph

"Consulting actual operational information" on page 7)

and press the Aand Zkeys simultaneously for

approximately 5 seconds while the timer's value is

displayed. The timer's value becomes 0. Then

successively press the Rkey and the Ekey to return

to normal operation.

12 15

°C

13.5

compressor

inlet water temperature

of evaporator

OFF

compressor2

compressor1

Operation manual

9EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations, wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of direct parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of direct

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Deﬁning the heating temperature difference

To control the heating load, the unit is equipped with a two-step

thermostat. The thermostat's "heating temperature difference" can be

modiﬁed by means of direct parameter r4.

The default, limit and step values are:

■Default value 3.0°C

■Limit values 0.3to 19.9°C

■Step value 0.1°C

To deﬁne the heating temperature difference, proceed as follows:

1Enter the list of direct parameters.

2Press the Akey three times.

Direct parameter code r4 appears on the display.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other direct parameters before saving the

modiﬁcations, select another direct parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of direct parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of direct

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Tasks carried out using user parameters

Entering the list of user parameters

Access to the list of user parameters is protected by the user

password (a 3-digit number between 0and 199).

To enter the list of user parameters, proceed as follows:

1Press the Ekey for approximately 5 seconds.

The number 00 starts ﬂashing on the display.

2Enter the correct password using the Aand/or Zkey.

The password's value is 22.

3Press the Rkey to conﬁrm the password and to enter the list of

user parameters.

The controller displays parameter code :d (which is the ﬁrst user

parameter).

Deﬁning the measurement unit

Depending on the setting of user parameter :d, all temperature

values are displayed in °C or in °F. The conversion formulas from °C

to °F and vice versa are:

■T°C = (T°F – 32) / 1.8

■T°F = (T°C x 1.8) + 32

If user parameter dis set to 0, all temperatures appearing on the

display will be expressed in °C. If user parameter :d is set to 1all

temperatures will be expressed in °F.

To deﬁne the measurement unit, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Press the Rkey to switch to the parameter value.

3Select the appropriate setting using the Aand/or Zkey.

4Press the Rkey to return to the list of parameter codes.

5To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 2 onwards.

6To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Deﬁning the time delay between pump and compressor

startup

User parameter c7 allows you to deﬁne the time delay between the

pump startup and the compressor startup. The default, limit and step

values for the time delay are:

■Default value 15 sec

■Limit values 0to 150 sec

■Step value 1sec

To deﬁne the time delay, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code c7 using the Aand/or Zkey.

Parameter code c7 appears on the display.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

27 30

°C

28.5

compressor

inlet water temperature

of condenser

OFF

compressor2

compressor1

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

Deﬁning the time delay between unit and pump shutdown

User parameter c8 allows you to deﬁne the time delay between the

unit shutdown and the pump shutdown, more speciﬁcally the period

during which the pump will still be active after the unit has been shut

down. The default, limit and step values for the time delay are:

■Default value 0min

■Limit values 0to 150 min

■Step value 1min

To deﬁne the time delay, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code c8 using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Deﬁning the timer threshold for maintenance warning

User parameter cb allows you to deﬁne a timer threshold (running

hours of the compressor) after which the controller will generate a

maintenance warning or request. The default, limit and step values

for the timer threshold are:

■Default value 0hours

■Limit values 0to 10,000 hours

■Step value 100 hours

To deﬁne the timer threshold, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code cb using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Enabling or disabling the buzzer

When an alarm is detected, the buzzer is activated for the period

deﬁned by user parameter p4. The default, limit and step values for

the activation period are:

■Default value 1min

■Limit values 0to 15 min

0buzzer disabled

15 buzzer active until muted by the user

■Step value 1min

To enable the buzzer for a certain period or to disable the buzzer,

proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code p4 using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Selecting local or remote cool/heat control

User parameter h6 in combination with the remote cool/heat selection

switch (installed by the customer) allows the user to select cooling or

heating mode without using the Ior Ykey on the controller.

■When user parameter h6 is set to 0(= No), cooling or heating

mode is determined by means of the controller.

■When user parameter h6 is set to 1(= Yes), cooling or heating

mode is determined by means of the remote switch.

To select local or remote cool/heat control, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code h6 using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

NOTE If the unit is always working in normal conditions, no

speciﬁc maintenance is requested. In this case the

warning function can be disabled by setting parameter

cb to 0.

Operation manual

11 EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Selecting local or remote on/off control

User parameter h7 in combination with the remote on/off switch

(installed by the customer) allows the user to switch the unit on

without using the Ior Ykey on the controller.

■When user parameter h7 is set to 0(= No), the unit can only be

switched on by means of the Ior Ykey on the controller.

■When user parameter h7 is set to 1(= Yes), the unit can be

switched on by means of the remote on/off switch and the Ior

Ykey on the controller.

To select local or remote on/off control, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code h7 using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Locking the controller keyboard

Once user parameter h9 is set to 0, the following advanced features

can no longer be carried out by means of the controller:

■modifying direct and user parameters (parameters can be

displayed but not modiﬁed),

■selecting cooling or heating mode,

■resetting the timers.

When user parameter h9 is set to 1, the above-described advanced

features can be carried out using the controller.

To lock or unlock the controller keyboard, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code h9 using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Deﬁning the unit's serial address

To control the unit from a supervisory system, an address card

(optional module) should be installed in the unit. The unit's serial

address required for communication with the supervisory system is

deﬁned by parameter ha. The default, limit and step values for the

serial address are:

■Default value 1

■Limit values 1to 16

■Step value 1

To deﬁne the unit's serial address, proceed as follows:

1Enter the list of user parameters.

Parameter code :d appears on the display.

2Select parameter code ha using the Aand/or Zkey.

3Press the Rkey to switch to the parameter value.

4Select the appropriate setting using the Aand/or Zkey.

5Press the Rkey to return to the list of parameter codes.

6To adjust or to consult other user parameters before saving the

modiﬁcations, select another user parameter using the Aand/

or Zkey and then repeat from instruction 3 onwards.

7To save the modiﬁcations, press the Ekey. To cancel the

modiﬁcations wait approximately 40 seconds.

In the ﬁrst case, the controller saves the changes, leaves the list

of user parameters and returns to normal operation, displaying

the inlet water temperature.

8In the second case, the display starts ﬂashing. Approximately

40 seconds later, the controller leaves the list of user

parameters without saving the modiﬁcations. The inlet water

temperature reappears on the display.

Key on the controller Remote On/off switch UNIT RESULT

ON ON ON

ON OFF OFF

OFF ON OFF

OFF OFF OFF

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

OPERATION 32~72HP

The 32~72Hp units are equipped with a built-in digital controller

offering a user-friendly way to set up, use and maintain the unit.

This part of the manual has a task-oriented, modular structure. Apart

from the ﬁrst section, which gives a brief description of the controller

itself, each section or subsection deals with a speciﬁc task you can

perform with the unit.

Depending on the model there are two or three modules in the

system. The models 32~48Hp only have two modules, whereas the

models 52~72Hp consist of three modules. These modules are

generally named M1, M2 and M3 in the following descriptions. All

information about module 3 (M3) is not applicable for 32~48Hp

models.

Digital controller

User interface

The digital controller consists of an alphanumeric display, labelled

keys which you can press and a number of LEDs.

Figure - Digital controller

Working with the 32~72Hp units

This chapter deals with the everyday usage of the unit. Here, you will

ﬁnd how to perform routine tasks, such as:

■"Setting the language" on page 12

■"Switching the unit on" on page 12 and "Switching the unit off"

on page 12

■"Consulting actual operational information" on page 12

■"Selecting cooling or heating operation" on page 13

■"Adjusting the temperature setpoint" on page 13

■"Resetting the unit" on page 13

Setting the language

If desired, the operating language can be changed to any of the

following languages: English, German, French, Spanish or Italian.

1Enter the usersettings menu. Refer to chapter "Main menu" on

page 14

2Go to the appropriate screen of the usersettings menu using the

g and h keys.

3Select the appropriate ﬁeld (LANGUAGE) using the qkey.

4Press the gand hkeys to adjust the language setting.

5Press qto conﬁrm the adjusted language setting.

When the setting has been conﬁrmed, the cursor switches to the next

setting.

Switching the unit on

1Press the Jkey on the controller.

Depending on whether or not the remote ON/OFF switch is

conﬁgured (refer to the service manual), the following conditions

may occur.

When no remote ON/OFF switch is conﬁgured, the LED inside

the Jkey lights up and an initialization cycle is started. Once all

the timers have reached zero, the unit starts up.

When a remote ON/OFF switch is conﬁgured, the following table

applies:

2When the unit is started up for the ﬁrst time, or when the unit has

been out of operation for a longer period, it is recommended to

check the following.

Abnormal noise and vibrations

Make sure that the unit does not produce abnormal noises or

vibrations: check the ﬁxation, stop valves and piping. If the

compressor makes abnormal noises, this may also be caused by

an overcharge of refrigerant.

3If the water chiller does not start after a few minutes, refer to

"Troubleshooting" on page 19.

Switching the unit off

If the remote on/off control parameter is set to NO:

Press the okey on the controller.

The LED inside the okey goes out.

If the remote on/off control parameter is set to YES:

Press the okey on the controller or switch the unit off using the

remote on/off switch.

The LED inside the okey goes out in the ﬁrst case and starts

blinking in the second case.

Consulting actual operational information

1Enter the readout menu through the main menu. (Refer to the

chapter "Main menu" on page 14.)

The controller automatically shows the ﬁrst screen of the

readout menu which provides the following information:

•MANUAL MODE or INLSETP1/2: 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 E/C: actual inlet water temperature.

•THERMOSTAT STEP: actual thermostat step. The maximum

number of thermostat steps are as listed:

fkey, to enter the main menu

okey, to start up or to shut down the unit.

pkey, to enter the safeties menu or to reset an alarm.

keys, to scroll up or down through the screens of a menu

(only in case W, Xor Cappears) or to raise, respectively

lower a setting.

qkey, to conﬁrm a selection or a setting.

NOTE Temperature readout tolerance: ±1°C.

Legibility of the alphanumeric display may decrease in

direct sunlight.

Local key Remote switch Unit oLED

ON ON ON ON

ON OFF OFF Flashing

OFF ON OFF OFF

OFF OFF OFF OFF

In case of emergency, switch off the unit by pushing the

emergency stopbutton.

NOTE Also consult "Deﬁning the schedule timer" on page 17.

32Hp 448Hp 464Hp 6

36Hp 452Hp 668Hp 6

40Hp 456Hp 672Hp 6

44Hp 460Hp 6

Operation manual

13 EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

2Press the hkey to enter the next screen of the readout menu.

This screen of the readout menu provides the following

information on the evaporator:

•M1: OUTLWATER: actual outlet water temperature of module 1.

•M2: OUTLWATER: actual outlet water temperature of module 2.

•M3: OUTLWATER: actual outlet water temperature of module 3.

3Press the hkey to enter the next screen of the readout menu.

The COMPRESSOR STATUS screen of the readout menu provides

information concerning the status of the different compressors.

•C11: actual status of compressor 1 of module 1.

•C12: actual status of compressor 2 of module 1.

•C21: actual status of compressor 1 of module 2.

•C22: actual status of compressor 2 of module 2.

•C31: actual status of compressor 1 of module 3.

•C32: actual status of compressor 2 of module 3.

When a circuit is OFF, the following status information may

appear.

•SAFETY ACTIVE: one of the circuit safety devices is activated

(refer to the chapter "Troubleshooting" on page 19).

•(LIMIT): the circuit is limited by a remote contact.

•TIMERS BUSY: the actual value of one of the software timers is

not zero (refer to the "Timers menu" on page 15).

•CAN STARTUP: the circuit is ready to start up when extra

cooling load is needed.

The 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 SAFETY ACTIVE.

4Press the hkey to enter the next screen of the readout menu.

To consult actual operational information about the total running

hours of the compressors.

Selecting cooling or heating operation

The "cooling/heating" menu allows the user to set the unit in cooling

or heating operation.

The COOL/HEAT menu provides information concerning the selected

operation mode.

■COOLING (EVAP): cooling mode. The two setpoints for inlet

water temperature control of the evaporator can be used.

■HEATING (COND): heating mode. The two setpoints for inlet

water temperature control of the condenser can be used.

To deﬁne cooling/heating operation, proceed as follows:

1Enter the cooling/heating menu through the main menu. (Refer

to the chapter "Main menu" on page 14.)

2Position the cursor behind MODE using the qkey.

3Select the appropriate setting using the g and h keys.

4Press qto conﬁrm.

The cursor returns to the upper left corner of the screen.

Adjusting the temperature setpoint

The unit provides deﬁnition and selection of four or two independent

temperature setpoints.

In cooling operation, two setpoints are reserved for inlet control of the

evaporator.

■INLSETP 1 E: inlet water temperature of evaporator, setpoint 1,

■INLSETP2 E: inlet water temperature of evaporator, setpoint 2.

In heating operation, two setpoints are reserved for inlet control of the

condenser.

■INLSETP 1 C: inlet water temperature of condenser, setpoint 1,

■INLSETP 2 C: inlet water temperature of condenser, setpoint 2.

In double thermostat operation, two setpoints are reserved for inlet

control of the evaporator and two others are reserved for inlet control

of the condenser.

■INLSETP 1 E: inlet water temperature of evaporator, setpoint 1,

■INLSETP2 E: inlet water temperature of evaporator, setpoint 2.

■INLSETP 1 C: inlet water temperature of condenser, setpoint 1,

■INLSETP 2 C: inlet water temperature of condenser, setpoint 2.

The selection between setpoint 1 and 2 is done by a remote dual

setpoint switch (to be installed by the customer). The actual active

setpoint can be consulted in the readout menu.

If the manual control mode is selected (refer to "User settings menu"

on page 14), none of the above-mentioned setpoints will be active.

To adjust a setpoint, proceed as follows:

1Enter the setpoints menu through the main menu. (Refer to the

chapter "Main menu" on page 14).

If the user password is disabled for setpoint modiﬁcations (refer

to the "User settings menu" on page 14), the controller will

immediately enter the setpoints menu.

If the user password is enabled for setpoint modiﬁcations, enter

the correct code using the g and h keys. (Refer to the "User

password menu" on page 16). Press qto conﬁrm the password

and to enter the setpoints menu.

2Select the setpoint to be adjusted using the qkey.

A setpoint is selected when the cursor is blinking behind the

setpoint's name.

The ">" sign indicates the actual active temperature setpoint.

3Press the gand hkeys to adjust the temperature setting.

The default, limit and step values for the cooling (evaporator)

and heating (condenser) temperature setpoints are:

4Press qto save the adjusted temperature setpoint.

When the setting has been conﬁrmed, the cursor switches to the

next setpoint.

5To adjust other setpoints, repeat from instruction 2 onwards.

Resetting the unit

The units are equipped with three kinds of safety devices: unit

safeties, module safeties and network safeties.

When a unit safety occurs, all compressors are shut down. The

safeties menu will indicate which safety is activated. The COMPRESSOR

STATUS screen of the readout menu will indicate OFF - SAFETY ACTIVE

for all circuits. The red LED inside the pkey lights up and the buzzer

inside the controller is activated.

When a module safety occurs, the compressors of the corresponding

module are shut down. The COMPRESSOR STATUS screen of the

readout menu will indicate OFF - SAFETY ACTIVE for the module

concerned. The red LED inside the pkey lights up and the buzzer

inside the controller is activated.

If the unit has been shut down due to a power failure, it will carry out

an autoreset and restart automatically when the electrical power is

restored.

IIIINN

NNLL

LLSS

SSEE

EETT

TTPP

PP IIIINN

NN EE

EE IIIINN

NNLL

LLSS

SSEE

EETT

TTPP

PP IIIINN

NN CC

default value 12°C 30°C

limit values(a)

(a) For glycol units the lower limit of the cooling temperature setpoint can be

adapted in the factory. The following values apply:

INLSETP IN E/C: 5°C, 3°C, –2°C, –7°C

8--> 23°C 15--> 50°C

step value 0.1°C 0.1°C

NOTE Also consult "Deﬁning the schedule timer" on page 17.

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

To reset the unit, proceed as follows:

1Press the pkey to acknowledge the alarm.

The buzzer is deactivated.

The controller automatically switches to the corresponding

screen of the safeties menu: unit safety or module safety.

2Find the cause of shutdown and correct.

Refer to "Listing activated safeties and checking the unit status"

on page 17 and the chapter "Troubleshooting" on page 19.

When a safety can be reset, the LED under the pkey starts

blinking.

3Press the pkey to reset the safeties that are no longer active.

Once all safety devices are disactivated and reset, the LED

under the pkey goes out. If one of the safeties is still active, the

LED under the pkey goes on again. In this case, return to

instruction 2.

4If a unit safety occurred or if all modules were shut down due to

module safeties, switch on the unit using the okey.

Advanced features of the digital controller

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.

The down arrow X on the display indicates that you can go to the next

screen of the current menu using the hkey. The up arrow Won the

display indicates that you can go to the previous screen of the current

menu using the g key. If Cis displayed, this indicates that you can

either return to the previous screen or can go to the next screen by

using the g and h keys.

Main menu

Scroll through the main menu using the g and h keys to move the >

mark in front of the menu of your choice. Push the qkey to enter the

selected menu.

Readout menu

Setpoints menu

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.

User settings menu

The "user settings" menu, protected by the user password, allows a

full customization of the units.

If the user shuts down the power supply in order to repair a

safety, the safety will automatically be reset after power-up.

NOTE The history information, i.e. the number of times a unit

safety or a circuit safety occurred and the unit status at

the moment of shutdown, can be checked by means of

the history menu.

To consult actual operational infor-

mation about the control mode, the

inlet water temperature of the

evaporator/condenser and the

thermostat step.

To consult information about the

outlet water temperature of the

modules 1, 2 and 3 (only for

52~72Hp).

To consult information about the

compressor status (ﬁrst screen).

>READOUT MENU

SETPOINTS MENU

USERSETTINGS MENU

TIMERS MENU

HISTORY MENU

INFO MENU

I/O STATUS MENU

USERPASSWORD MENU

COOL/HEAT MENU

BX MANUAL MODE

INL WATER E: 12.0°C

INL WATER C: 30.0 °C

THERMOSTAT STEP :2/6

BC EVAPORATOR

M1 : OUTLWATER: 07.0 °C

M2: OUTLWATER: 07.0 °C

M3: OUTLWATER:-03.0 °C

BC COMPRESSOR STATUS

C11 : OFF-CAN STARTUP

C12: OFF-CAN STARTUP

C21: OFF-CAN STARTUP

To consult information about the

compressor status (second screen).

To consult actual operational

information about the total running

hours of the compressors.

To deﬁne the temperature setpoints.

To deﬁne the manual settings and to

select the control mode.

To deﬁne the thermostat settings.

To deﬁne the lead-lag mode of the

modules.

To deﬁne capacity limitation.

(ﬁrst screen)

To deﬁne capacity limitation.

(second screen)

To deﬁne the pump control settings.

To deﬁne the schedule timer.

To deﬁne the dual evaporator pump.

To deﬁne the display settings.

To deﬁne whether or not a password

is needed to enter the setpoints

menu.

BC COMPRESSOR STATUS

C22: OFF-CAN STARTUP

C31 : OFF- SAFETY ACT.

C32: OFF- LIMIT

BW RUNNING HOURS

C11 : 00010h 12 ; 00010h

C21 : 00010h 22 ; 00010h

C31 : 00010h 32 ; 00010h

B>INLSETP1 E : 12.0°C

INLSETP2 E : 12.0°C

INLSETP1 C : 30.0°C

INLSETP2 C : 30.0°C

BC CONTROL SETTINGS

MODE :MANUAL CONTROL

C11 : OFF 12 ; OFF

C21 : OFF 22 ; OFF

BC THERMOST.SETTINGS

STEPS : 6 STPL.: 1.5°C

STEPDIFFERENCE: 0.5°C

LOADUP: 180s-DWN: 30s

CLEAD-LAG SETTINGS

LEAD-LAG MODE : AUTO

LEAD-LAG HOURS: 1000h

BC CAP. LIM. SETTINGS

MODE : REMOTE DIG INP.

L1M1 : OFF 2: OFF 3: OFF

L2M1 : OFF 2: OFF 3: OFF

BC CAP. LIM. SETTINGS

L3M1 : OFF 2: OFF 3: OFF

L4M1 : OFF 2: OFF 3: OFF

BC PUMPCONTROL

PUMPLEADTIME : 020s

PUMPLAGTIME : 000s

DAILY ON : Y AT : 00h00

BC SCHEDULE TIMER

ENABLE TIMER : N

ENABLE HOLIDAY PER : N

BC HOLIDAY : 01 TO 03

1 : 00h00 -

2: 00h00 -

3: 00h00 -

BC DUAL EVAP. PUMP

MODE : AUTOM. ROTATION

OFFSET ON RH : 0048h

BC DISPLAY SETTINGS

LANGUAGE : ENGLISH

TIME : 00h00

DATE : 00/01/2001

BC SETPOINT PASSWORD

PASSWORD NEEDED TO

CHANGE SETPOINTS : Y

Operation manual

15 EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Timers menu

Safeties menu

The "safeties" menu provides useful information for trouble shooting

purposes. The following screens contain basic information.

Along with the basic information, more detailed information screens

can be consulted while the safety menu is active. Press the qkey.

Screens similar to the following will appear.

History menu

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. Warnings are also recorded.

Additionally the number of safeties that already occurred, can be

consulted on the ﬁrst line of the history screens.

Info menu

Input/output menu

The "input/output" menu gives the status of all the digital inputs and

the relay outputs of the unit.

To enter the service menu. (Only a

qualiﬁed installer is allowed to

access this menu.)

To check the actual value of the

general software timers (ﬁrst screen).

To check the actual value of the

general software timers (second

screen).

To check the actual value of the

compressor timers (ﬁrst screen).

To check the actual value of the

compressor timers (second screen).

To consult which unit safety caused

the shutdown.

To consult which module 1 safety

caused the shutdown.

To consult which module 2 safety

caused the shutdown.

To consult which module 3 safety

caused the shutdown.

To check the time and control mode

at the moment of the unit shutdown.

To check which were the common

evaporator and condenser inlet water

temperature.

To check which were the evaporator

outlet water temperature of all

modules at the moment of shutdown.

To check which was the status of the

compressors at the moment of

shutdown (ﬁrst screen).

To check which was the status of the

compressors at the moment of

shutdown (second screen).

BC ENTER SERVICE

PASSWORD : 0000

BX GENERAL TIMERS

LOADUP : 000s - DWN : 000s

PUMPLEAD : 000s

FLOWSTOP : 00s

BC COMPRESSOR TIMERS

COMPR. STARTED : 00s

BC COMPRESSOR TIMERS

C11 GRD : 000s AR : 000s

C12 GRD : 000s AR : 000s

C21 GRD : 000s AR : 000s

BW COMPRESSOR TIMERS

C22 GRD : 000s AR : 000s

C31 GRD : 000s AR : 000s

C32 GRD : 000s AR : 000s

BX UNIT SAFETY

0C9 : INL E SENSOR ERR

BX MODULE 1 SAFETY

1CA : OUT E SENSOR ERR

BX MODULE 2 SAFETY

2CA : OUT E SENSOR ERR

BX MODULE 3 SAFETY

3CA : OUT E SENSOR ERR

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

00h00 - 12/01/2001

MANUAL MODE

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

INL.E : 12.0°C STEP:

INL.C : 30.0°C 0

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

OUTE1 : 07.0°C OUTE3 :

OUTE2 : 07.0°C 07.0°C

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

C11 : ON C21 :

C12 : ON ON

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

C22 : ON

To check which were the total

amount of running hours of the com-

pressors at the moment of shutdown

(ﬁrst screen).

To check which were the total

amount of running hours of the com-

pressors at the moment of shutdown

(second screen).

To consult time and date information.

To consult additional information

about the unit such as the unit type,

the refrigerant used and the manu-

facturing number.

To consult information about the con-

troller's software version.

To consult information about the

PCB.

To check whether any module

safeties are active.

To check the reverse phase protector

and if there's any waterﬂow to the

evaporator.

To check the status of the change-

able digital inputs.

To check the status of the compres-

sor relay outputs.

To check the status of the modules

low pressure bypass.

To check the status of the alarm

voltage free contact and the pump/

general operation contact.

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

RH11 : 00000h RH21:

RH12 : 00000h 00000h

BC UNIT HISTORY : 004

0C9 : INL E SENSOR ERR

RH22 : 00000h

BX TIME INFORMATION

TIME : 00h00

DATE : 00/01/2001

BC UNIT INFORMATION

UNITTYPE : WW-HP-32

MANUFACT. NR.: 0000000

REFRIGERANT : R134a

BC UNIT INFORMATION

SW : V1.0M6 (01/11/01)

SW CODE : FLDKNMCH0A

BW PCB INFORMATION

BOOT : V2.02-02/08/00

BIOS : V2.32-31/07/01

BX DIGITAL INPUTS

M1 SAFETY OK

M2 SAFETY OK

M3 SAFETY NOK

BC DIGITAL INPUTS

FLOWSWITCH : FLOW OK

REV.PHASE PR. : OK

BC CHANG. DIG. INPUTS

DI1 DUAL SETP : SETP.1

DI2 REM. ON/OFF : OFF

DI3 REM. C/H : COOL

BC RELAY OUTPUTS

C11 : ON C12 : ON

C21 : ON C22 : ON

C31 : ON C32 : OFF

BC RELAY OUTPUTS

LPBYPASS1 : CLOSED

LPBYPASS2 : CLOSED

LPBYPASS3 : OPEN

BC RELAY OUTPUTS

GEN. ALARM : CLOSED

PUMP/GEN OPER : CLOSED

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

User password menu

Cooling/heating menu

Tasks of the user settings menu

Entering the user settings menu

The user settings menu is protected by the user password, a 4-digit

number between 0000 and 9999.

1Enter the USERSETTINGS MENU through the main menu.(Refer to

the chapter "Main menu" on page 14).

The controller will request the password.

2Enter the correct password using the g and h keys.

3Press qto conﬁrm the password and to enter the user settings

menu.

The controller automatically enters the ﬁrst screen of the user

settings menu.

To deﬁne settings of a certain function:

1Go to the appropriate screen of the usersettings menu using the

g and h keys.

2Position the cursor behind the parameter to be modiﬁed using

the qkey.

3Select the appropriate setting using the g and h keys.

4Press qto conﬁrm the selection.

When the selection has been conﬁrmed, the cursor switches to

the next parameter which can now be modiﬁed.

5Repeat from instruction 2 onwards to modify the other

parameters.

Deﬁning and activating the control mode

The unit is equipped with a thermostat which controls the cooling

capacity of the unit. Two different control modes exist:

■manual control mode: the operator controls the capacity himself

- MANUAL CONTROL

■inlet control mode: uses the evaporator and/or condenser

entering water temperature to control the capacity of the unit -

INLET WATER

When the operator wants to control the capacity himself, he can

activate manual control mode using the CONTROL SETTINGS screen of

the user settings menu. In this case, he has to deﬁne the following

parameters:

■MODE (present mode): manual control.

■C11, C12, C21, C22, C31, C32 (compressor status of module 1, 2

and 3 in manual mode or capacity limitation value in case the

"capacity limitation remote contact" is enabled): ON or OFF.

Deﬁning the thermostat settings

When automatic control mode is selected, the unit uses a thermostat

to control the cooling or heating capacity. The maximum number of

thermostat steps are as listed:

However, the thermostat parameters are not ﬁxed and can be

modiﬁed via the THERMOST. SETTINGS screen of the user settings menu.

The default, limit and step values for the thermostat parameters are:

Deﬁning the lead-lag mode

The lead/lag mode determines which module starts up ﬁrst in case of

a capacity demand.

The lead-lag parameters are:

■LEAD-LAG MODE

Automatic: the controller decides whether module 1, module 2,

or module 3 starts up ﬁrst.

The modules follow the entered order of starting up (see table

below).

■LEAD-LAG HOURS: In the automatic mode, the number of hours

indicated on the display is the maximum difference between the

running hours of the modules. This value is important for main-

tenance purposes. It should be set high enough so that the

modules do not require maintenance at the same time and that

at least one module can remain constantly active.

The lower and upper limits are 100 and 1000 hours respectively.

The default value is 1000 hours.

Deﬁning the pump control settings

The PUMPCONTROL screen of the user settings menu allows the user to

deﬁne the pump-leadtime and pump-lagtime.

■PUMPLEADTIME: used to deﬁne the time that the pump must run

before the unit can start up.

■PUMPLAGTIME: used to deﬁne the time that the pump keeps

running after the unit has been stopped.

Deﬁning the display settings

The DISPLAY SETTINGS screen of the user settings menu allows the

user to deﬁne the choice of language, time and date.

■LANGUAGE: used to deﬁne the language of the displayed

information of the controller.

■TIME: used to deﬁne the present time.

■DATE: used to deﬁne the present date.

To check the status of the change-

able relay output.

To change the user password.

To select cooling or heating mode.

NOTE To activate manual control mode, select MANUAL as

present mode. To deactivate the manual control mode,

select INLET WATER as present mode.

BW CHANG. REL OUTPUTS

DO1 REV.VALVE(C/H) : O

BCHANGE PASSWORD

NEW PASSWORD : 0000

CONFIRM : 0000

BCOOLING/HEATING

MODE : COOLING (EVAP)

32Hp 448Hp 464Hp 6

36Hp 452Hp 668Hp 6

40Hp 456Hp 672Hp 6

44Hp 460Hp 6

Lower limit Upper limit Step Default

STPL (°C) 0.4 2.0 0.1 1.5

STEPDIFFERENCE (°C) 0.2 0.8 0.1 0.5

LOADUP (sec) 15 300 1 180

LOADDOWN (sec) 15 300 1 20

NOTE A functional diagram showing the thermostat parame-

ters can be found in "Annex I" on page 21.

3 modules 2 modules

ﬁrst >next >last ﬁrst >last

123 12

231 21

312

NOTE If a module is de-activated due to a failure, the next

module will start up instead.

Operation manual

17 EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Deﬁning dual evaporator pump control

The DUAL EVAP. PUMP screen of the user settings menu allows the

user to deﬁne the steering of two evaporator pumps (for this to be

possible a changeable digital output has to be conﬁgured for a

second evaporator pump in the service menu).

■MODE: used to deﬁne which kind of control will be used for the

two evaporator pumps. When automatic rotation is chosen the

offset on running hours also has to be entered.

■OFFSET ON RH: used to deﬁne the offset in running hours between

the two pumps. Used to switch over between pumps when they

work in automatic rotation mode.

Deﬁning the schedule timer

The SCHEDULE TIMER screen of the user settings menu allows the user

to deﬁne the schedule timer settings.

■MON, TUE, WED, THU, FRI, SAT and SUN: used to deﬁne to which

group each day of the week belongs (-/G1/G2/G3/G4).

■For each of the four groups up to nine actions can be set, each

with their respective timing. Actions include: putting the unit on/

off, setting a setpoint, setting cooling/heating and setting

capacity limitation.

■Beside these four groups there is also a holiday period group

which is set the same way as the other groups. Up to 12 holiday

periods can be entered in the HD PERIOD screen. During these

periods the schedule timer will follow the settings of the holiday

period group.

Activating or deactivating the setpoints password

The SETPOINT PASSWORD 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.

Installing BMS address card

The BMSCARD INSTALLED parameter allows the user to control the unit

from a supervisory system.

If the BMSCARD INSTALLED parameter is set to Y(yes), communication

with a supervisory system is possible. The BMSSETTINGS screen and

BMSBOARDSETTINGS screen of the user settings menu are available.

These screens are used to set BMS parameters.

The selection "BMS address card installed" or "not installed", is done

in the service menu (refer to the service 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 (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 (DWN – refer to the thermostat parameters): starts

counting when a thermostat step change has occurred. During

the countdown, the unit will not be able to enter a lower thermo-

stat step.

■FLOWSTOP (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 (PUMPLEAD – refer to the pump control settings):

starts counting whenever the unit is switched on. During the

countdown, the unit cannot start up.

■PUMPLAG (PUMPLAG – refer to the pump control settings): starts

counting whenever the unit is switched off. During the count-

down, the pump keeps running.

To check the actual value of the software timers, proceed as follows:

1Enter the TIMERS MENU through the main menu. (Refer to the

chapter "Main menu" on page 14.)

The controller displays the actual value of the GENERAL TIMERS:

the loadup timer, the loaddown timer, the ﬂowstart timer, the

ﬂowstop timer (when the unit is on and the ﬂowstart timer has

reached zero), the pumplead timer and the pumplag timer.

2Press the hkey to check the compressor timers (ﬁrst screen).

The controller shows the actual value of the COMPRESSOR TIMERS:

the guard timers (one per compressor) and the antirecycling

timers (one per compressor).

3Press the hkey to check the compressor timers (second

screen).

The controller shows the actual value of the COMPRESSOR TIMERS:

the guard timers (one per compressor) and the antirecycling

timers (one per compressor).

Tasks of the safeties menu

Listing activated safeties and checking the unit status

If the alarm buzzer is activated and the user presses the pkey, the

controller automatically enters the safeties menu.

■The controller will enter the UNIT SAFETY screen of the safeties

menu when a unit safety was the cause of shutdown. This

screen provides the following information:

•the activated safety: emergency stop, ﬂow switch, sensor

error or reverse phase

• the unit status at the moment of shutdown

inlet water temperature setpoint of the evaporator,

inlet water temperature setpoint of the condenser,

time and date at the moment of shutdown.

■The controller will enter the MODULE 1, MODULE 2 or MODULE 3

SAFETY screen of the safeties menu when a safety of module 1,

respectively module 2 or module 3 was activated. These

screens provide information about the module status at the

moment of shutdown.

• the activated safety: freeze-up, general safety or sensor error

• the unit status at the moment of shutdown

inlet water temperature setpoint of the evaporator,

inlet water temperature setpoint of the condenser,

time and date at the moment of shutdown.

1Press the pkey when the alarm buzzer is activated.

The appropriate safety screen with the basic information

appears. Press the qkey to see the detailed information.

2If more than one kind of safety is active (indicated by means of

W, Xor C), use the g and h keys to consult them.

NOTE A functional diagram showing the schedule timer

working can be found in "Annex II" on page 22.

NOTE The unit always works with “last command”. This

means that the last command given, whether manually

by the user or by the schedule timer, is always

executed.

Examples of command that can be given are switching

the unit on/off or changing a setpoint.

EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

Operation manual

Tasks of the history menu

Checking the safety info and the unit status after a reset

The information available in the safeties menu is also stored in the

history menu, where it is stored after resetting the unit or the module.

In this way, the history menu provides a means of checking the unit

status at the moment of the latest 10 shutdowns.

To check the safety info and the unit status, proceed as follows:

1Enter the HISTORY MENU through the main menu. (Refer to the

chapter "Main menu" on page 14.)

The controller enters the UNIT HISTORY screen which contains the

following information: the number of shutdowns, the unit safety

which caused the most recent shutdown and the basic

information at the moment of this shutdown.

2Press the g and h keys to consult the M1,M2 or M3 HISTORY

screens.

3Press the qkey to see the detailed information.

Tasks of the info menu

Consulting additional unit information

1Enter the INFO MENU through the main menu. (Refer to the

chapter "Main menu" on page 14).

The controller enters the UNIT INFORMATION screen which contains

the following information: the unit name, the refrigerant used and

the manufacturing (serial) number.

2Press hto consult the next UNIT INFORMATION screen.

This screen contains information about the controller's software

version.

Tasks of the input/output menu

Checking the status of the inputs and outputs

The input/output menu provides a means of checking the status of

the digital inputs and the status of the relay outputs.

The locked digital inputs are:

■M1,M2 or M3 SAFETY: indicates the status of the general module

safeties.

■FLOWSWITCH: indicates the status of the ﬂowswitch, activated or

deactivated.

■REVERSE PHASE PROTECTOR: indicates the status of this safety.

The changeable digital inputs are:

■REM. C/H: indicates the status of the remote cooling/heating

switch.

■DUAL SETPOINT: indicates the status of the remote dual setpoint

switch, setpoint 1 or setpoint 2.

■REM. ON/OFF: indicates the status of the remote on/off switch.

■CAP LIM1/2/3: indicates the status of the enable/disable capacity

limitation switch(es).

The locked relay outputs are:

■LPBYPASS 1/2/3: indicates whether the low pressure of the

module is in bypass mode or not.

■C11, C12, C21, C22, C31, C32: indicates whether the compressor is

running or not.

■PUMP/GEN OPER: indicates the status of this voltage free contact.

It is activated if the pump should be ON, which also indicates

general operation.

The changeable relay outputs are:

■REV. VALVE (C/H): indicates whether the unit is running in cooling

or in heating.

■2ND EVAP PUMP: indicates the status of the second evaporator

pump.

■CONDENSER PUMP: indicates the status of the condenser pump.

■100% CAPACITY: indicates when the unit is working at 100%.

To check the inputs and outputs, proceed as follows:

1Enter the I/O STATUS MENU through the main menu. (Refer to the

chapter "Main menu" on page 14.)

The controller enters the ﬁrst DIGITAL INPUTS screen.

2Consult the other screens of the input/ouput menu using the g

and h keys.

Tasks of the user password menu

Changing the user password

Access to the user settings menu and the setpoints menu is

protected by the user password (a 4-digit number between 0000 and

9999).

To change the user password, proceed as follows:

1Enter the USERPASSWORD MENU through the main menu.(Refer to

the chapter "Main menu" on page 14).

The controller will request the password.

2Enter the correct password using the g and h keys.

3Press qto conﬁrm the password and to enter the password

menu.

The controller requests the new password.

4Press qto start the modiﬁcation.

The cursor is positioned behind NEW PASSWORD.

5Enter the new password using the g and h keys.

6Press qto 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 positioned behind CONFIRM.

7Enter the new password again using the g and h keys.

8Press qto conﬁrm the new password.

NOTE The actual password will only be changed when the

new password and the conﬁrmed password have the

same value.

Operation manual

19 EWWP045~065KAW1M + ECB1~3MUW

Packaged water-cooled water chillers

4PW30041-1A

TROUBLESHOOTING

This section provides useful information for diagnosing and correct-

ing certain troubles which may occur in the unit.

Before starting the trouble shooting procedure, carry out a thorough

visual inspection of the unit and look for obvious defects such as

loose connections or defective wiring.

Before contacting your local dealer, read this chapter carefully, it will

save you time and money.

When a safety device was activated, stop the unit and ﬁnd out why

the safety device was activated before resetting it. Under no circum-

stances safety devices may be bridged or changed to a value other

than the factory setting. If the cause of the problem cannot be found,

call your local dealer.

Symptom 1:The unit does not start, but the ON LED lights up

Symptom 2:The unit does not start, but the ON LED is ﬂashing

Symptom 3:The unit does not start and the ON LED does not light up

Symptom 4: One of the circuits does not start up

Symptom 5: One of the following safety devices is activated

When carrying out an inspection on the supply panel or on

the switch box of the unit, always make sure that the circuit

breaker of the unit is switched off.

POSSIBLE CAUSES CORRECTIVE ACTION

The temperature setting is not

correct. Check the controller setpoint.

The ﬂowstart timer is still running. The unit will start after approx. 15

seconds. Make sure that water is

ﬂowing through the evaporator.

Neither one of the circuits can start

up. Refer to Symptom 4: One of the

circuits does not start up.

Unit is in manual mode (all

compressors at 0%). Check on the controller.

Power supply failure. Check the voltage on the supply

panel.

Blown fuse or interrupted protection

device. Inspect fuses and protection

devices. Replace by fuses of the

same size and type (refer to

"Electrical speciﬁcations" on

page 2).

Loose connections. Inspect connections of the ﬁeld

wiring and the internal wiring of the

unit. Tighten all loose connections.

Shorted or broken wires. Test circuits using a tester and repair

if necessary.

POSSIBLE CAUSES CORRECTIVE ACTION

The remote ON/OFF input is

enabled and the remote switch is off. Put the remote switch on or disable

the remote ON/OFF input.

POSSIBLE CAUSES CORRECTIVE ACTION

All circuits are in failure mode. Refer to Symptom 5: One of the

following safety devices is activated.

One of the following safety devices is

activated:

• Flow switch (S8L,S9L)

• Emergency stop

Refer to Symptom 5: One of the

following safety devices is activated.

The ON LED is broken. Contact your local dealer.

The unit is in bypass mode. Check the bypass remote contact.

POSSIBLE CAUSES CORRECTIVE ACTION

One of the following safety devices is

activated:

• Compressor thermal protector (Q*M)

•Overcurrent relay (K*S)

• Discharge thermal protector (S*T)

•Low pressure switch

• High pressure switch (S*HP)

•Reverse phase protector (R*P)

•Freeze-up

Check on the controller and refer to

Symptom 5: One of the following

safety devices is activated.

The anti-recycling timer is still active. The circuit can only start up after

approximately 10 minutes.

The guard timer is still active. The circuit can only start up after

approximately 1 minute.

The circuit is limited to 0%. Check the "enable/disable capacity

limitation" remote contact.

Symptom 5.1: Overcurrent relay of compressor

POSSIBLE CAUSES CORRECTIVE ACTION

Failure of one of the phases. Check fuses on the supply 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 relay inside the switch box

and reset the controller.

Symptom 5.2: Low pressure switch

POSSIBLE CAUSES CORRECTIVE ACTION

Water ﬂow to water heat exchanger

too low. Increase the water ﬂow.

Shortage of refrigerant. Check for leaks and reﬁll refrigerant,

if necessary.

Unit is working out of its operation

range. Check the operation conditions of

the unit.

Inlet temperature to the water heat

exchanger is too low. Increase the inlet water temperature.

Flow switch is not working or no

water ﬂow. Check the ﬂow switch and the water

pump.

RESET

After pressure rise, this safety resets

automatically, but the controller still

needs to be reset.

Symptom 5.3: High-pressure switch

POSSIBLE CAUSES CORRECTIVE ACTION

Water ﬂow to condenser is too low. Increase the water ﬂow and/or check

the strainer for clogging.

RESET

After ﬁnding the cause, push the

button on the high-pressure switch

housing and reset the controller.

Symptom 5.4: Reverse phase protector is activated

POSSIBLE CAUSES CORRECTIVE ACTION

Two phases of the power supply are

connected in the wrong phase

position.

Invert two phases of the power

supply (by licensed electrician).

One phase is not connected

properly. Check the connection of all phases.

RESET

After inverting two phases or ﬁxing

the power supply cables properly,

the protector is reset automatically,

but the controller still needs to be

reset.

Symptom 5.5: Discharge thermal protector is activated

POSSIBLE CAUSES CORRECTIVE ACTION

Unit is working outside the operation

range. Check the operation condition of the

unit.

RESET

After temperature decrease, the

thermal protector resets

automatically but the controller still

needs to be reset.

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