Daikin EWLD120MBYNN, Operation Manual

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Operation manual
1
EWLD120~540MBYNN
Condenserless water-cooled water chillers
4PW22687-1
C
ONTENTS
Page
Introduction ....................................................................................... 1
Technical specifications ............................................................................. 1
Electrical specifications ............................................................................. 2
Description ........................................................................................ 3
Function of the main components.............................................................. 4
Safety devices............................................................................................ 5
Internal wiring - Parts table ........................................................................ 5
Before operation................................................................................ 6
Checks before initial start-up ..................................................................... 6
Water supply .............................................................................................. 7
Power supply connection and crankcase heating...................................... 7
General recommendations ........................................................................ 7
Operation .......................................................................................... 7
Digital controller ......................................................................................... 7
Working with the unit ................................................................................. 8
Advanced features of the digital controller............................................... 10
Troubleshooting ............................................................................... 17
Maintenance.................................................................................... 19
Maintenance activities ............................................................................. 19
Disposal requirements ............................................................................. 19
I
NTRODUCTION
The unit is supplied and shipped with a holding charge of 0.5 bar
nitrogen (N
2
). This unit has to be charged with ozon friendly R-134a
refrigrant.
Pay attention to the selection of your remote condenser. Make sure to
select a remote condenser developed for use with R-134a.
This operation manual concerns condenserless water-cooled water
chillers of the Daikin EWLD-MBYNN series. These units are provided
for indoor installation and used for cooling applications. The EWLD
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)
EWLD120MBYNN EWLD260MBYNN EWLD480MBYNN
EWLD170MBYNN EWLD340MBYNN EWLD500MBYNN
EWLD240MBYNN EWLD400MBYNN EWLD540MBYNN
Condenserless water-cooled water chillers
Operation manual
READ THIS MANUAL ATTENTIVELY BEFORE STARTING
UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN
YOUR FILES FOR FUTURE REFERENCE.
Before starting up the unit for the first time, make sure that
it has been properly installed. It is therefore necessary to
carefully read the installation manual supplied with the unit
and the recommendations listed in "Checks before initial
start-up".
(1) Refer to the engineering data book for the complete list of specifications.
General EWLD 120 170 240
Dimensions HxWxD
(mm)
1014x2672x930
Weight
• machine weight (kg)
891 1110 1342
• operation weight (kg)
907 1130 1369
Connections
• chilled water inlet and
outlet
(inch)
3"OD
(76 mm OD)
3" (88.9 mm OD)
• remote condenser connection
discharge (inch)
2"1/8 2"1/8 2"1/8
liquid (inch)
7/8" 1"1/8 1"3/8
• high pressure relief valve (inch)
1x 1" 1x 1" 2x 1"
Compressor
Type semi-hermetic single screw
Qtyxmodel
1x
ZHA5LMGUYE
1x
ZHA7MSGUYE
1x
ZHA7WSGUYE
Speed
(rpm)
2880
Oil type FVC68D
Oil charge volume
(l)
7,5
+0.5
–0
10
+0.5
–0
10
+0.5
–0
Condensor
refer to engeneering specifications as published by the supplier of your remote
condenser
Evaporator
Type brased plate heatexchanger
Qtyxmodel 1x AC120EQ-NP156 1x AC250EQ-NP96 1x AC250EQ-NP128
General EWLD 260 340 400
Dimensions HxWxD
(mm)
1014x2672x930 2000x2672x930
Weight
• machine weight (kg)
1428 2220 2452
• operation weight (kg)
1462 2260 2497
Connections
• chilled water inlet and
outlet
(inch)
3"
(88.9 mm OD)
2x 3" (88.9 mm OD)
• remote condenser connection
discharge (inch)
2"5/8 2x 2"1/8 2x 2"1/8
liquid (inch)
1"3/8 2x 1"1/8 1"1/8+1"3/8
• high pressure relief valve (inch)
2x 1" 2x 1" 3x 1"
Compressor
Type semi-hermetic single screw
Qtyxmodel
1x
ZHA9LSGUYE
2x
ZHA7MSGUYE
1x ZHA7MSGUYE
1x ZHA7WSGUYE
Speed
(rpm)
2880
Oil type FVC68D
Oil charge volume
(l)
14
+0.5
–0
2x 10
+0.5
–0
2x 10
+0.5
–0
Condensor
refer to engeneering specifications as published by the supplier of your remote
condenser
Evaporator
Type brased plate heatexchanger
Qty x model 1x AC250EQ-NP162 2x AC250EQ-NP96
1x AC250EQ-NP96
1x AC250EQ-NP128