Daikin EWLP012KBW1N, EWLP020KBW1N, EWLP026KBW1N, EWLP030KBW1N, EWLP040KBW1N Operation manuals
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OPERATION MANUAL
Condenserless water-cooled water chillers
EWLP012KBW1N
EWLP020KBW1N
EWLP026KBW1N
EWLP030KBW1N
EWLP040KBW1N
EWLP055KBW1N
EWLP065KBW1N
EWLP012KBW1N EWLP040KBW1N
EWLP020KBW1N EWLP055KBW1N
EWLP026KBW1N EWLP065KBW1N
EWLP030KBW1N
Condenserless water-cooled water chillers
Operation manual
CONTENTS Page
Introduction ....................................................................................... 1
Technical specifications ............................................................................. 2
Electrical specifications ............................................................................. 2
Description ........................................................................................ 3
Function of the main components.............................................................. 4
Safety devices............................................................................................ 4
Internal wiring - Parts table........................................................................ 5
Before operation................................................................................ 6
Checks before initial start-up ..................................................................... 6
Water supply.............................................................................................. 6
Power supply connection and crankcase heating ...................................... 6
General recommendations ........................................................................ 6
Operation .......................................................................................... 6
Digital controller......................................................................................... 6
Working with the units................................................................................ 7
Advanced features of the digital controller............................................... 10
BMS connection modbus ................................................................ 13
General description of Modbus................................................................ 13
Implemented error code........................................................................... 14
Defining the BMS setting ......................................................................... 14
Var iables database.................................................................................. 14
Troubleshooting............................................................................... 15
Maintenance.................................................................................... 16
Important information regarding the refrigerant used .............................. 16
Maintenance activities ............................................................................. 16
Disposal requirements............................................................................. 16
Annex I ............................................................................................ 17
Saturated temperature............................................................................. 17
Menu overview ................................................................................ 18
INTRODUCTION
This operation manual concerns condensorless water-cooled water
chillers of the Daikin EWLP-KB series. These units are provided for
indoor installation and used for cooling applications. The EWLP units
can be combined with Daikin fan coil units or air handling units for air
conditioning purposes. They can also be used for supplying water for
process cooling.
This manual has been prepared to ensure adequate operation and
maintenance of the unit. It will tell you how to use the unit properly
and will provide help if problems occur. The unit is equipped with
safety devices, but they will not necessarily prevent all problems
caused by improper operation or inadequate maintenance.
In case of persisting problems contact your local Daikin dealer.
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 "Before starting".
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 "Operation" on page 6 before changing
the parameters.
The English text is the original instruction. Other languages are
translations of the original instructions.
This appliance is not intended for use by persons, including children,
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do not play with
the appliance.
Operation manual
1
Condenserless water-cooled water chillers
EWLP012~065KBW1N
4PW61666-1 – 07.2010
Technical specifications
General EWLP 012 020 026 030
(1)
Dimensions HxWxD (mm) 600x600x600
Machine weight
(kg)
104 138 144 149
Connections
• condenser
discharge
connection
(copper)
• condenser liquid
connection
(copper)
General EWLP 040 055 065
(mm)
12.7 flare 19.1 flare 19.1 flare 19.1 flare
(mm)
9.52 flare 12.7 flare 12.7 flare 12.7 flare
Dimensions HxWxD (mm) 600x600x1200
Machine weight
(kg)
252 265 274
Connections
• condenser
discharge
connection
(copper)
• condenser liquid
connection
(copper)
Compressor EWLP 012 020 026 030
(mm)
2x 19.1 flare 2x 19.1 flare 2x 19.1 flare
(mm)
2x 12.7 flare 2x 12.7 flare 2x 12.7 flare
Model JT140BF-YE JT212DA-YE JT300DA-YE JT335DA-YE
Speed
(rpm)
2900
Oil type FVC68D
Oil charge volume
(l)
1.5 2.7 2.7 2.7
Refrigerant type R407C
Evaporator
Type brased plate heat exchanger
Min. water volume
Water flow range
Condenser
(l)
62.1 103 134 155
(l/min)
17~69 29~115 38~153 45~179
refer to engeneering specifications as published by the supplier of your
remote condenser
Compressor EWLP 040 055 065
Model 2x
Speed
(rpm)
JT212DA-YE
2x
JT300DA-YE
2900
2x
JT335DA-YE
Oil type FVC68D
Oil charge volume
(l)
2x 2.7 2x 2.7 2x 2.7
Refrigerant type R407C
Evaporator
Type brased plate heat exchanger
Min. water volume
Water flow range
Condenser
(l)
(l/min)
205 268 311
57~229 77~307 89~359
refer to engeneering specifications as published by the supplier of your
remote condenser
Electrical specifications
Model EWLP 012 020 026 030
(2)
Power supply
• Phase
•Frequency
•Voltage
•Voltage tolerance
• Recommended fuses (aM)
(Hz)
(%)
(V)
3x 16 3x 20 3x 25 3x 32
3N~
50
400
±10
Compressor
• Phase
•Frequency
•Voltage
• Nominal running current (A)
(Hz)
(V)
7.4 11.6 14.7 16.8
3~
50
400
Control
• Phase
•Frequency
•Voltage
• Recommended fuses (aM)
Model EWLP 040 055 065
(Hz)
(V)
1~
50
230
factory installed
Power supply
• Phase
•Frequency
•Voltage
•Voltage tolerance
• Recommended fuses (aM)
(Hz)
(%)
(V)
3x 40 3x 50 3x 50
3N~
50
400
±10
Compressor
• Phase
•Frequency
•Voltage
• Nominal running current (A)
(Hz)
(V)
11.6 14.7 16.8
3~
50
400
Control
• Phase
•Frequency
•Voltage
• Recommended fuses (aM)
(Hz)
(V)
1~
50
230
factory installed
(1) Refer to the engineering data book for the complete list of specifications.
EWLP012~065KBW1N
Condenserless water-cooled water chillers
4PW61666-1 – 07.2010
(2) Refer to the engineering data book for the complete list of specifications.
Operation manual
2
DESCRIPTION
The EWLP condenserless water-cooled water chillers are available in 7 standard sizes.
EWLP040~065KBW1N
17
2
13 14 15 16
EWLP012~030KBW1N
2
3
14
9
11
7
8
12 12
Figure: Main components
1 Compressor
2 Evaporator
3 Accumulator
4 Switchbox
5 Chilled water in
6 Chilled water out
7 Discharge stop valve
8 Liquid stop valve
9 Evaporator entering water temperature sensor
10 Freeze up sensor
11 Digital display controller
12 Power supply intake
13 Ball valve (field installed)
14 Water filter (field installed)
15 Air purge valve (field installed)
16 T-joint for air purge (field installed)
17 Flow switch (with T-joint) (field installed)
18 Main switch
500
500
500
3
1
1
3
4
500
5
11
10
500
500
500
500
759
866 1818
10
Required space around the unit for service
Operation manual
3
Condenserless water-cooled water chillers
EWLP012~065KBW1N
4PW61666-1 – 07.2010
Function of the main components
EWLP012~030KBW1N
EWLP040~065KBW1N
64
13
5
12
14
R3T
R4T
R3T
R4T
S4LP
S5LP
S4LP
1
M1C
LP
HP
3 7
M2C
LP
HP
M1C
LP
HP
S1HP
Q1D
2
8 9
S2HP
Q2D
S1HP
Q1D
10111513
Figure: Functional diagram
1 Compressor 9 Liquid stop valve
2 Filter 10 Discharge stop valve
3 Expansion valve 11 Accumulator
4 Evaporator 12 Flow switch (delivered with the unit, installed in the field)
5 Evaporator water outlet 13 Ball valve (delivered with the unit, installed in the field)
6 Evaporator water inlet 14 Water filter (delivered with the unit, installed in the field)
7 Sight glass 15 Air purge valve (delivered with the unit, installed in the field)
8 Liquid solenoid valve Field piping
As the refrigerant circulates through the unit, changes in its state or
Safety devices
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
refrigerant vapour coming from the evaporator to a pressure at
which it can easily be liquified in the condenser.
■ 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 in/outlet connections
The unit is equipped with General safety devices: shut down all
circuits and stop the whole unit.
■ I/O PCB (A2P) (input/output)
The I/O PCB (A2P) contains a reverse phase protector.
The reverse phase protector detects if the 3 phases of the power
supply are connected correctly. If a phase is not connected or if
2 phases are inverted, the unit can not start up.
■ 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.
The water inlet and outlet connection allow an easy connection
of the unit to the water circuit of the air handling unit or industrial
equipment.
EWLP012~065KBW1N
Condenserless water-cooled water chillers
4PW61666-1 – 07.2010
Operation manual
4
■ 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 intlet 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.
■ 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 sensor
The outlet water temperature sensor (R4T) measures the
temperature of the water at the water heat exchanger outlet. The
protection device shuts down the circuit when the temperature of
the chilled water becomes too low in order to prevent freezing of
the water during operation.
When the outlet water temperature returns to normal, the
protector resets automatically, but the controller needs to be
reset manually.
■ Fuse for control circuit (F1U)
The fuse for control circuit protects cables of control circuit and
controller components in case of short circuit.
■ Fuse for control circuit (F4)
The fuse for control circuit protects cables of control circuit in
case of short circuit.
■ Fuse for digital controller (F3U)
The fuse protects cables of digital controller and digital controller
in case of short circuit.
■ Flow switch (delivered with the unit, installed in the field)
The flow switch measures the flow in the water circuit. In case
the flow does not reach the minimum allowed water flow, the unit
will be shut down.
■ Ball valve (delivered with the unit, installed in the field)
A ball valve is installed in front of and behind the water filter to
allow filter cleaning without having to drain the water circuit.
■ Water filter (delivered with the unit, installed in the field)
The filter installed in front of the unit removes dirt from the water
to prevent damage to the unit or blockage of the evaporator or
condenser. The water filter should be cleaned on a regular base.
■ Air purge valve (delivered with the unit, installed in the field)
Remaining air in the chiller water system will be automatically
removed via the air purge valve.
Internal wiring - Parts table
Refer to the internal wiring diagram supplied with the unit. The
abbreviations used are listed below:
A1P.................... PCB: controller PCB
A2P.................... PCB: I/O PCB (input/output)
A3P............. ** ... PCB: Address card for BMS
A5P,A6P......** ... PCB: Softstarter for circuit 1, circuit 2
A7P............. ** ... PCB: Remote user interface
A71P.................. PCB: power supply card
A72P.................. PCB: remote user interface
E1H,E2H............ Crankcase heater circuit 1, circuit 2
F1,F2,F3 ..... # .... Main fuses for the unit
F4 ...............* ..... Fuse I/O PCB
F5 ...............## .. Surge proof fuse
F6 ...............# .... Fuse for pumpcontactor
F1U.................... Fuse I/O PCB
F3U.................... Fuse for controller PCB
H3P.............*..... Indication lamp alarm
H4P.............*..... Indication lamp operation compressor 1
H5P.............*..... Indication lamp operation compressor 2
H6P.............*..... Indication lamp general operation
K1F,K2F...... # .... Auxiliary contactor for fan motors
K1M,K2M........... Compressor contactor circuit 1, circuit 2
K4S,K5S ............ Overcurrent relay circuit 1, circuit 2
K6S............. * ..... Overcurrent relay pump
K1P............. * ..... Pumpcontactor
M1C,M2C .......... Compressor motor circuit 1, circuit 2
PE...................... Main earth terminal
Q1D,Q2D........... Discharge thermal protector circuit 1, circuit 2
R3T.................... Evaporator inlet water temperature sensor
R4T.................... Evaporator outlet water temperature sensor
R5T.................... Condenser inlet temperature sensor
S1HP,S2HP ....... High pressure switch circuit 1, circuit 2
S4LP,S5LP......... Low pressure switch circuit 1, circuit 2
S7S............. * ..... Switch for remote cooling/heating selection
dual setpoint
S9S............. * ..... Switch for remote start/stop
S10L .................. Flow switch
S12M ................. Main isolator switch
TR1.................... Transfo 230 V ➞ 24 V for supply of controller PCB
TR2.................... Transfo 230 V ➞ 24 V for supply of I/O PCB (A2P)
Y3R.................... Reversingvalve
Y1S, Y2S ........... Liquid solenoid valve
X1~3,X1~82A .... Connectors
Not included with standard unit
Not possible as option Possible as option
Obligatory # ##
Not obligatory * **
(1)
(1)
(1)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
or
(2)
or dual setpoint
Operation manual
5
(1) optional
(2) field supply
Condenserless water-cooled water chillers
EWLP012~065KBW1N
4PW61666-1 – 07.2010
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