Operation manual
1
EWAD120~340MBYNN
Packaged air-cooled water chillers
4PW22683-1
C
ONTENTS
Page
Function of the main components.............................................................. 3
Safety devices............................................................................................ 3
Internal wiring - Parts table ........................................................................ 4
Before operation................................................................................ 5
Digital controller ......................................................................................... 6
Working with the unit ................................................................................. 6
Advanced features of the digital controller................................................. 9
Troubleshooting ............................................................................... 15
Maintenance.................................................................................... 17
I
NTRODUCTION
This operation manual concerns packaged air-cooled water chillers
of the Daikin EWAD-MBYNN series. These units are provided for
outdoor installation and used for cooling applications. The EWAD
units can be combined with Daikin fan coil units or air handling units
for air conditioning purposes. They can also be used for supplying
water for process cooling.
This manual has been prepared to ensure adequate operation and
maintenance of the unit. It will tell you how to use the unit properly
and will provide help if problems occur. The unit is equipped with
safety devices, but they will not necessarily prevent all problems
caused by improper operation or inadequate maintenance.
In case of persisting problems contact your local Daikin dealer.
Technical specifications
(1)
EWAD120MBYNN
EWAD240MBYNN
EWAD150MBYNN
EWAD300MBYNN
EWAD170MBYNN
EWAD340MBYNN
Packaged air-cooled water chillers
Operation manual
READ THIS MANUAL ATTENTIVELY BEFORE STARTING
UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN
YOUR FILES FOR FUTURE REFERENCE.
Before starting up the unit for the first time, make sure that
it has been properly installed. It is therefore necessary to
carefully read the installation manual supplied with the unit
and the recommendations listed in
(1) Refer to the engineering data book for the complete list of specifications.
General EWAD
120
150
170
Dimensions HxWxD
(mm)
2221 x 3973 x 1109
Weight
• machine weight
(kg)
1391
1600
1705
• operation weight
(kg)
1441
1663
1768
Connections
• chilled water inlet and outlet
3"
4"
4"
• evaporator drain
1/2"G
Compressor
Type
semi-hermetic single screw
Qty x model
1x ZHA5LMGUYE 1x ZHA5WLGUYE 1x ZHA7MSGUYE
Speed
(rpm)
2880
Oil type
FVC68D
Oil charge volume
(l)
7.5
7.5
10
Condenser
Nominal air flow
(m
3
/min)
960
No. of motors x output
(W)
4 x 550
4 x 1020
4 x 1020
Evaporator
Model
DES135
DES175
DES175
General EWAD
240
300
340
Dimensions HxWxD
(mm)
2250 x 4280 x 2238
Weight
• machine weight
(kg)
2710
3210
3260
• operation weight
(kg)
2790
3340
3390
Connections
• chilled water inlet and outlet
(a)
(a) Victaulic
®
coupling, provided with counter pipe for welding
4"
5"
5"
• evaporator drain
1/2"G
Compressor
Type
semi-hermetic single screw
Qty x model
2x ZHA5LMGUYE 2x ZHA5WLGUYE 2x ZHA7MSGUYE
Speed
(rpm)
2880
Oil type
FVC68D
Oil charge volume
(l)
7.5
7.5
10
Condenser
Nominal air flow
(m
3
/min)
1920
No. of motors x output
(kW)
8 x 550
8 x 1020
8 x 1020
Evaporator
Model
DED240
DED315
DED315
Model EWAD
120
150
170
240
300
340
Power supply
• Phase
3~
• Frequency
(Hz)
50
• Voltage
(V)
400
• Voltage tolerance
(%)
±10
Unit
• Nominal running current
(A)
67.6
87.4
109
135
175
219
• Maximum running current
(A)
83.6
101
140
167
203
281
• Recommended fuses
according to IEC 269-2
(A)
3 x
100 gL
3 x
125 gL
3 x
160 gL
3 x
200 gL
3 x
250 gL
3 x
300 gL
Compressor
• Phase
3~
• Frequency
(Hz)
50
• Voltage
(V)
400
• Nominal running current
(A)
60
75
97
2x 60
2x 75
2x 97
Control and fan motor
• Phase
1~
• Frequency
(Hz)
50
• Voltage
(V)
230 V/24 V AC
• Nominal running curren
(A)
4x 1.9 4x 3.1 4x 3.1 8x 1.9 8x 3.1 8x 3.1
