1. Products that perform...By people who care
WCFX-R134a
Water Cooled Hermetic Screw Chiller
Cooling Capacity
198-1788kW
50Hz R 134a
Features
Vertical hermetic screw compressor
Flooded evaporator
Special economic cycle
Muti compressors with one refrigerant circuit
Unique oil return system
High efficiency oil ballance system
Throttle equipment composed by modulate、globe valve and liquid level sensor
Advanced microcomputer control
Option with environment-friendly refrigerant

2. 1
The Dunham-Bush WCFX Water-Cooled Rotary Screw Water Chillers
are available from 57 to 508 Rtons. Their performance has been certified by
the Air Conditioning and Refrigeration Institute (ARI). These units are
WC F X 27 S D N
INTRODUCTION
Water cooled chiller
Flooded evaporator
Hermetic screw compressor
Non-standard chiller
S˖Single compressor
T˖Dual compressors
Blank˖Triple compressors
STANDARD FEATURES
gWCFX-R134a
Size Range
• 23 Models from 57 to 508 Rtons at ARI standard conditions with
certified performance
• Multiple compressor units provide redundancy, and favorable partload
efficiency
Compressor
• Quiet, reliable MSC Rotary Screw Compressors
• Multiple rotary screw compressor design for fail-safe reliability and
redundancy
• Hermetic Design eliminates problematic shaft seals, inspections,
expensive teardowns, time consuming alignments, etc.
• Consistent unloading with dependable slide valve mechanism
Evaporator/Condenser
• Cleanable and Removable Integral Fin Copper Tubes for easy
serviceability
• One, Two or Three Water Passes Available for a wide variety of
applications
supplied with rotary screw compressors that are backed by 48 years of
experience.
The side by side evaporator/condenser arrangement makes a split
design optional for ease of movement throughany standard commercial
doorway.
All units are factory run tested before shipment.
• Removable Water Heads for service
• Victaulic Groove Water Connections for quick installation and/or
service
• Full Pump Down Capacity in Condenser, therefore, pump out unit not
required
Microcomputer/Electrical
• Proactive Microcomputer Controller adapts to abnormal operating
conditions
• Tolerant and accommodating of extreme conditions at start-up
• Capable of controlling multiple chillers, cooling towers, pumps, etc.
• Circuit Breaker on each multiple compressor unit
• Unit Mounted Contactor and Time Delay for reduced Inrush Start
• Current and Voltage transformers
• Under Voltage Phase Failure Relay
• Indicator lights for Compressor Overloads, High Motor Temperature,
Micro Alarm, Control Power, Compressor Control Circuit
NOMENCLATURE
Compressor Code
R
R134a
Dual-operation

3. Economizer Cycle
Liquid refrigerant passes through the first expansion device and into
the flash economizer where flash gas and liquid refrigerant are separated.
The gaseous refrigerant is then drawn out of the flash economizer and into
the vapor injection port of the compressor. The remaining liquid
refrigerant then passes through a second expansion device which reduces
refrigerant pressure to evaporator levels where it is then distributed evenly
into the evaporator.
By removing the flash gas from the flash economizer at an
intermediate pressure, the enthalpy of the refrigerant flowing into the
evaporator is reduced which increases the refrigeration effect and
improves the efficiency of the refrigeration cycle about 16%DŽ
First expansion
Second expansion Condensation
㒣⌢఼ݙࠊދࠖ䮾থ䖛⿟
㪌থ
Evaporation without
economizer
Evaporation with
economizer
EnthalpyBTU/LB)
Pressure(PSIA)
Shell and Tube Flooded Coolers
Compress process
Flooded Coolers operate considerably different than Direct Expan-sion
Coolers. They have the refrigerant in the shell side with the fluid to
be cooled in the tubes. The liquid level of refrigerant in the shell covers
the tubes with refrigerant. This direct contact enables the cooler to oper-ate
more efficiently than a direct expansion cooler by having a closer
total temperature difference (TTD). Flooded Coolers employ the most
advanced vessel technology available today. Special internal and extern-al
enhanced tubing provides excellent unit efficiency. These coolers are
designed and constructed to meet the requirements of the JB4750-2003.
and are stamped accordingly. The tubing is roll expanded into the tube
sheets and the heads are removable and interchangeable from end-to-end
for ease of tube maintenance. Vent and drain plugs are provided in each
head. Two-pass coolers are supplied standard with one and three-pass
optional.
Shell and Tube Condenser
The condenser is a cleanable shell and tube type with high efficiency
external and internal enhanced copper tubes, mechanically expanded into
heavy fixed steel tube sheets. The condenser is sized for full refrigerant
pump down capacity and the shell side is equipped with dual refrigerant
relief devices. Vent and drain fittings are provided in each head and the
heads are removable for tube cleaning and serviceability.
Compressor
The Dunham-Bush rotary screw compressor is a positive displace-ment
helical-axial design for use with high pressure refrigerants.
• The compressor consists of two intermeshing helical grooved rotors, a
drive rotor and a driven rotor, in a stationary housing with suction and
discharge gas ports.
• Uniform gas flow, even torque and positive displacement, all provided
by pure rotary motion contributes to vibration-free operation over a wide
range of operating conditions. Intake and discharge cycles overlap,effect-ively
producing a smooth, continuous flow of gas.
• No oil pump is required for lubrication or sealing purposes. Oil is dist-ributed
throughout the compressor by the pressure differential between
the suction and the discharge cavities.
Discharge Port
Oil Deflection
Plate
Hermetic Motor
Housing
Vapor Injection
Port
Slide Valve
Compressor
Shell
Oil Seperator
Motor
Suction Filter
Suction Port
Rotors
Oil Level
Glass
2 g:);5D

4. Simplified Capacity Control
The slide valve mechanism for capacity modulation and part-load
operation is an outstanding feature.
• The moving parts are simple, rugged and trouble-free. The slide mech-anism
is hydraulically actuated.
• Package capacity reduction can be down to as low as 25% without
HGBP by progressive movement of slide valves away from their stops.
• Capacity reduction is programmed by an exclusive electronically initi-ated,
hydraulically actuated control arrangement.
Positive Displacement Direct Connected
The compressor is directly connected to the motor without any comp-licated
gear systems to speed up the compressor and thus detract from
the overall unit reliability.
Oil Separator
Each compressor is provided with an integral oil separator located
adjacent to the discharge gas port.
• The separator is a multi-layered mesh element which effectively sepa-rates
oil from the gas stream.
• The oil drains into the sump and the discharge gas passes around the
deflection plate. An oil drain valve is located near the bottom of the oil
sump.
Main Bearings
Each rotor is fitted with a set of anti-friction tapered roller bearings.
They carry both radial and thrust loads.
Rotors
The latest asymmetrical rotor profiles of patented Dunham-Bush
design assure operation at highest efficiencies. Rotors are precision
machined from AISI 1141 bar stock and case hardened.
3 g:);5D
Castings
All housings are manufactured of high grade, low porosity,cast iron.
Solid State Motor Protection. The motor winding protection module used
in conjunction with sensors embedded in the compressor motor windings
is designed to prevent the motor from operating at unsafe operating tem-peratures.
The overloads for the motor are also solid state.
Display Information
The alphanumeric liquid crystal display utilizes easy-to-understand
menu-driven software.Inexperienced operators can quickly work through
these menus to obtain the information they require or to modify control
parameters. More experienced operators can bypass the menu systems, if
desired, and move directly to their requested control function. Easily
accessible measurements include:
• Leaving chilled water temperature
• Evaporator pressure
• Condenser pressure
• System voltage
• Number of compressor starts
• Compressor contactor status
• Water temperature reset value
• Water flow switch status
• External start/stop command status
Advanced Microcomputer Control is a standard feature on all Dunham-
Bush Rotary Screw Water Cooled Chillers monitoring analog and digital
inputs to achieve precise control of the major operational and protective
functions of the unit.
Programmable Logic Controller (PLC) allows finger-tip user inter-action.
Its simple-to-use push button keyboard and menu-driven software
provide access to operating conditions, control setpoints and alarm hist-ory
clearly displayed on a prominent multi-line alphanumeric display.
An easy-to-install, inexpensive modem option allows remote reading of
operating parameter updates. The Dunham-Bush microcomputer insures

5. 4
g:);5
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䕧ܹ∈⏽䆒ᅮؐˈᑊᇚᖂ⬉㛥㕂Ѣ㞾ࡼ᥻ࠊԡ㕂ህৃᅲ⦄ދ∈
ߎষ⏽ᑺⱘ᥻ࠊDŽᴎ㒘᥻ࠊ㋏㒳ḍ᥂ދ∈ߎষ⏽ᑺ䇗㡖⒥䯔ⱘᎹ԰
ԡ㕂DŽय़㓽ᴎⱘࡴ䕑䖛⿟⬅⬉㛥⿟ᑣḍ᥂ὐᅛ᠔䳔㽕ⱘᅲ䰙䋳㥋໻
ᇣ䖯㸠᥻ࠊDŽ
ᴎ㒘ৃҹҎᎹᓔذˈгৃҹ䗮䖛ὐᅛ㞾ࡼ࣪㋏㒳ⱘ໪䚼ֵোᓔ
ذDŽᖂ⬉㛥㛑㓪ࠊҹϗ໽ЎϔϾ਼ᳳⱘ䖤㸠⿟ᑣDŽ
ᴎ㒘݋᳝ϟ߫㞾ࡼֱᡸࡳ㛑ˈֱ䆕њᴎ㒘䖤㸠ⱘৃ䴴ᗻ˖
਌⇨य़࡯䖛Ԣ
ᥦ⇨य़࡯䖛催
⊍⏽䖛催
䰆㒧ބֱᡸ
⬉ᴎ⏽ᑺ䖛催
य़Ꮒ䖛Ԣ
⊍ԡ䖛Ԣ
य़㓽ᴎ䖤㸠ᬙ䱰
ᮁ⬉
ދ∈ϡ⌕ࡼ
Ӵᛳ఼ᬙ䱰
य़㓽ᴎ⬉⌕䖛໻
䰆ℶᴎ㒘䞡໡䍋ࡼ
㘨㔥㕸᥻੠䖰⿟ⲥ᥻ࡳ㛑˄ৃ䗝˅
ᴎ㒘䞛⫼PLC᥻ࠊ఼ˈ䜡㕂᳝ᷛޚⱘRS485᥹ষˈᓔᬒⱘ
MODBUS˄RTU˅ⱘ䗮䆃ण䆂DŽ䗮䖛RS485᥹ষˈᴎ㒘᥻ࠊ఼ৃϢ
ὐᅛ㞾᥻㋏㒳᥹ᢼˈᅲ⦄໮⾡ᔶᓣⱘ䖰⿟ⲥ᥻DŽ
䗮䖛RS485᥹ষ੠ᓔᬒⱘ䗮䆃ण䆂ˈᅶ᠋ৃᅲ⦄ᴎ㒘ⱘᱎ㛑ὐ
ᅛ䲚Ёㅵ⧚੠᥻ࠊDŽ䗮䖛ὐᅛ᥻ࠊ఼ˈৃⲥ᥻ᴎ㒘ⱘ䖤㸠খ᭄੠᡹
䄺ֵᙃˈ䖰⿟ᓔ݇ᴎǃ䖰⿟᡹䄺໡ԡㄝᮍ֓᪡԰DŽ
䗮䖛RS485᥹ষ੠ᓔᬒⱘ䗮䆃ण䆂ˈ䗝ᢽ䜡㕂㕸᥻ㆅᇍ໮ৄᴎ
㒘䲚Ё᥻ࠊˈᅲ⦄ᘏ䋳㥋ⱘ䇗㡖ˈ㡖ⳕ៤ᴀˈᅲ⦄᪡԰ᅸݙ⬉㛥䖰
⿟ⲥ᥻↣Ͼᴎ㒘ⱘ䖤㸠⢊ᗕঞᓔ݇ᴎ᪡԰DŽ
䗮䖛RS485᥹ষ੠ᓔᬒⱘ䗮䆃ण䆂ˈ䗝ᢽ乓∝ᏗҔϧϮᓔথⱘ
䕃ӊࣙˈৃҹ೼⬉㛥Ϟᰒ⼎໮ৄᴎ㒘ⱘ䖤㸠খ᭄ˈߚ߿ᅲ⦄↣Ͼᴎ
㒘ⱘᓔ݇ᴎㄝ᪡԰DŽ
ܙߚ߽⫼ҹ໾㔥䌘⑤ˈ㒭ᴎ㒘๲ࡴҹ໾㔥䗮䆃῵ഫˈ䗮䖛TCP/IP
䗮䆃ᮍᓣˈᇍᴎ㒘ᅲ⦄䖰⿟ⲥ᥻䖤㸠খ᭄੠䖰⿟ᓔ݇ᴎ᪡԰DŽ
g:);5D
Capacity Control
Leaving chilled water temperature control is accomplished by enter-ing
the water temperature setpoint and placing the microcomputer in
automatic control. The unit will monitor all control functions and move
the slide valve to the required operating position. The compressor ramp
(loading) cycle is programmable and may be set for specific building
requirements. Remote adjustment of the leaving chilled water setpoint is
accomplished through either direct connection of other Dunham-Bush
control packages to the microcomputer through either the RS485 long
distance differential communication port, via terminal or modem connec-ted
to the RS232 communication port, or from an external building auto-mation
system supplying a simple 0 to 5 VDC signal. Optional remote
reset of compressor current limit may be accomplished in a similar fash-ion.
System Control
The unit may be started or stopped manually or through the use of an
external signal from a Building Automation System.
System Protection
The following system controls will automatically act to insure system
protection:
• Low suction pressure
• High discharge pressure
• High motor temperature/overcurrent
• Freeze protection
• High motor temperature
• Low differential pressure
• Low oil level
• Compressor run error
• Power loss
• Chilled water flow loss
• Sensor error
• Compressor overcurrent
• Anti-recycle
The microcomputer will retain the latest thirty alarm conditions complete
with time of failure in an alarm history. This tool will aid service
technicians in trouble shooting tasks enabling downtime and nuisance
trip-outs to be minimized.
Remote Monitoring
The microcomputer is complete with an RS232 communications port
and all hardware and software necessary to be remotely monitored and
controlled from a simple terminal and optional phone modem. This valu-able
enhancement to the refrigeration system allows the ultimate in
serviceability. The microcomputer as standard is additionally equipped
with history files which may be used to take logs which may be retrieved
via the phone modem periodically. Now owners of multiple buildings
have a simple and inexpensive method of investigating potential
problems quickly and in a highly cost effective manner. Dunham-Bush
has open Protocol on its microcomputer to allow direct interface with
Building Management Systems.

6. 5
Network Topology Map for Multi Chillers Group Control and Remote Control
DUNHAM-BUSH
Software
Ethernet Line
1# Chiller 2# Chiller 32# ៪ 254# Chiller
g:);5D
+
telephone
line
Centrial Computer or
Group Control Box
MODEM
+
Public Telephone
Network
C e n t r a l i z e d
C o n t r o l R o o m
DUNHAM-BUSH
Software or other
Building Management
System
telephpone
line
MODEM
RS-485/MODBUS Protocol or Ethernet/TCP-IP Protocol
DUNHAM-BUSH Water Cooled Chiller
Pr inter
Pr inter
PC
Local Controller 1# Local Controller2# Local Controller 32# or 254#
The group control system can be composed by 32 chillers˄RS-485/MODBUS Protocol˅or 254 chillers˄Ethernet/TCP-IP Protocol˅

7. 6
MODELWCFX
kW
RT
104kcal/h
10SR
201
57
17.3
1
38.8
69
252
35
25
4
41
24
4
3120
1025
1850
1340
1480
70
12SR
251
71
21.6
1
47.9
88
310
43
28
4
51
33
4
3120
1065
1850
1480
1630
85
15SR
300
85
25.8
1
56.4
110
360
52
31
4
61
35
4
3120
1100
1990
1800
1960
110
18SR
366
104
31.5
1
68.8
130
430
63
33
5
75
34
5
3200
1150
2030
2150
2350
115
20SR
432
123
37.1
1
81.8
152
460
74
38
5
88
55
5
3770
1175
2320
2800
3200
130
23SR
484
138
41.6
1
90.2
165
520
83
46
5
99
50
5
3770
1175
2290
2890
3250
145
24SR
532
151
45.71
1
101.4
186
560
91
46
5
109
50
5
3770
1175
2320
2930
3320
160
27SR
590
168
50.7
1
110.3
197
580
101
56
6
120
63
6
3790
1250
2340
3150
3570
180
30SR
650
185
55.9
1
122.3
224
655
112
55
6
133
68
6
3790
1250
2340
3300
3700
200
33TR
686
195
59.0
2
126.2
246
360/430
118
56
6
140
63
6
3790
1220
2180
3440
3850
210
36TR
755
215
64.9
2
138.6
272
430
130
54
6
154
60
6
3680
1220
2180
3560
3960
230
41TR
859
244
73.9
2
157.8
302
430/520
148
60
8
175
70
6
3680
1280
2400
4420
4920
265
46TR
965
274
83.0
2
178.2
328
520
166
55
8
197
66
8
4400
1330
2400
4780
5300
290
50TR
1073
305
92.3
2
198.6
366
520/580
185
54
8
219
73
8
4400
1370
2450
5010
5600
325
54TR
1163
331
100.0
2
215.1
400
580
200
54
8
237
75
8
4400
1410
2555
5330
5910
360
57TR
1268
361
109.0
2
234.6
434
580/655
218
56
8
258
70
8
4430
1370
2455
5620
6300
380
60TR
1344
382
115.6
2
248.8
468
655
231
64
8
274
75
8
4430
1370
2455
5760
6440
400
64R
1392
396
119.7
3
264.2
502
460/560
239
66
8
285
74
8
4700
1400
2490
6630
7230
425
69R
1497
426
128.7
3
284.6
524
460/560
257
73
8
306
74
8
4600
1465
2560
7020
7620
460
73R
1605
456
138.0
3
304.2
553
560
276
73
10
328
73
10
4780
1500
2600
7260
7880
490
75R
1660
472
142.7
3
315.2
578
560/655
285
67
10
340
70
10
4780
1500
2600
7450
8070
500
77R
1724
490
148.2
3
327.7
590
560/655
296
70
10
353
72
10
4780
1500
2600
7730
8350
520
81R
1788
508
153.7
3
340.4
602
655
307
72
10
366
71
10
4700
1560
2600
8020
8640
540
25-100% 12.5-100% 8.5-100%
380V/3P/50Hz
Compressor
Evaporator
1.05
Condenser
1.0
Dimension
g:);5D
WCFX-R134a TECHNICAL DATA
Capacity
Capacity Ragulation Range
Power
Quantity
Input Power (kW)
Rated Current (A)
Starting Current (A)
Flow (m3/h)
Pressure Drop (kPa)
Design Pressure (MPa)
Flow (m3/h)
Pressure Drop (kPa)
Design Pressure (MPa)
Length (mm)
Width (mm)
Height (mm)
Shopping Weight (kg)
Running Weight (kg)
Refrigerant Weigh (kg)
Note˖1ǃthe data in the table is based on the following operation condition˖Inlet/Outlet cooled water temperature12/7ćˈInlet/Outlet cooling water temperature 30/35ćˈFouling factor of condenser 0.044m2·ć/kW,
fouling factor of evaporator 0.018m2·ć/kWDŽ
2ǃthe models in above table is standard products, we can also design high efficient or Environment-friendly chillers according to the requirement of customer
3ǃNon-standard chillers can be designed accroding to dfferent requirements.

8. 7
MODELWCFX
kW
RT
104kcal/h
10SRD
198
56
17.0
132
37
11.3
1
38.7
37.9
69
252
37
29
4
41
23
4
3120
1025
1850
1340
1480
70
12SRD
247
70
21.3
164
47
14.1
1
47.8
46.8
88
310
46
33
4
51
32
4
3120
1065
1850
1480
1630
85
15SRD
296
84
25.4
197
56
16.9
1
56.2
55.1
110
360
55
36
4
60
34
4
3120
1100
1990
1800
1960
110
18SRD
361
103
31.0
240
68
20.6
1
68.6
67.2
130
430
67
39
5
74
33
5
3200
1150
2030
2150
2350
115
20SRD
426
121
36.6
283
80
24.3
1
81.6
79.9
152
460
80
44
5
87
54
5
3770
1175
2320
2800
3200
130
23SRD
477
136
41.0
317
90
27.3
1
89.9
88.1
165
520
89
54
5
97
49
5
3770
1175
2290
2890
3250
145
24SRD
524
149
45.1
348
99
30.0
1
101.1
99.1
186
560
98
54
5
108
49
5
3770
1175
2320
2930
3320
160
27SRD
581
165
50.0
386
110
33.2
1
110.0
107.8
197
580
109
65
6
119
61
6
3790
1250
2340
3150
3570
180
30SRD
640
182
55.1
426
121
36.6
1
121.9
119.5
225
655
120
64
6
131
66
6
3790
1250
2340
3300
3700
200
33TRD
676
192
58.1
449
128
38.6
2
125.8
123.3
246
360/430
126
65
6
138
61
6
3790
1220
2180
3440
3850
210
36TRD
744
211
63.9
495
141
42.5
2
138.2
135.4
272
430
139
63
6
152
58
6
3680
1220
2180
3560
3960
230
41TRD
846
241
72.8
563
160
48.4
2
157.3
154.2
302
430/520
158
70
8
173
68
6
3680
1280
2400
4420
4920
265
46TRD
951
270
81.7
632
180
54.4
2
177.7
174.1
328
520
178
64
8
194
64
8
4400
1330
2400
4780
5300
290
50TRD
1057
301
90.9
703
200
60.4
2
198.0
194.0
366
520/580
198
63
8
216
71
8
4400
1370
2450
5010
5600
325
54TRD
1146
326
98.5
762
217
65.5
2
214.5
210.2
400
580
214
63
8
234
73
8
4400
1410
2555
5330
5910
360
57TRD
1249
355
107.4
831
236
71.4
2
233.9
229.2
434
580/655
233
65
8
255
68
8
4430
1370
2455
5620
6300
380
60TRD
1324
376
113.8
880
250
75.7
2
248.1
243.1
468
655
247
75
8
270
73
8
4430
1370
2455
5760
6440
400
64RD
1371
390
117.9
912
259
78.4
3
263.4
258.1
502
460/560
256
77
8
281
72
8
4700
1400
2490
6630
7230
425
69RD
1475
419
126.8
981
279
84.3
3
283.7
278.1
524
460/560
276
85
8
302
72
8
4600
1465
2560
7020
7620
460
73RD
1581
450
135.9
1051
299
90.4
3
303.3
297.2
553
560
296
85
10
324
71
10
4780
1500
2600
7260
7880
490
75RD
1635
465
140.6
1087
309
93.5
3
314.3
308.0
578
560/655
306
78
10
335
68
10
4780
1500
2600
7450
8070
500
77RD
1698
483
146.0
1129
321
97.1
3
326.7
320.2
590
560/655
317
82
10
348
70
10
4780
1500
2600
7730
8350
520
81RD
1761
501
151.4
1171
333
100.7
3
339.4
332.6
602
655
329
84
10
361
69
10
4700
1560
2600
8020
8640
540
kW
RT
104kcal/h
25-100% 12.5-100% 8.5-100%
380V/3P/50Hz
Compressor
Ice Storage Input Power(kW)
Evaporator
1.05
Condenser
1.0
Dimension Data
g:);5D
WCFX-R134a Dual Operation Technical Data
A/C
Capacity
Ice Storage
Capacity
Capacity modulating range
Power
Compressor Model (QTY)
A/C Input Power (kW)
Rated Current (A)
Starting Current (A)
Flow (m3/h)
Pressure Drop (kPa)
Design Drop (MPa)
Pipe Diameter (in)
Flow (m3/h)
Pressure Drop (kPa)
Design Pressure (MPa)
Pipe Diameter (in)
Length (mm)
Width (mm)
Height (mm)
Shopping Weight (kg)
Running Weight (kg)
Refrigerant Weight (kg)
Note：1、the data in above table is based on the following operation condition： A/C condition: Inlet/Outlet 25% glycol solution temperature 12/7ć，Inlet/Outlet cooling water temperature 30/35ć，
Ice storage condition: 25% glycol solution outlet temperature: -5.6ćInlet cooling water temperature 30ćFouling factor of condenser 0.044m2·ć/kW, fouling factor of evaporator 0.018m2·ć/kW。
2、the models in above table is standard products, we can also design high efficient or Environment-friendly chillers according to the requirement of customer
3、Non-standard chillers can be designed accroding to dfferent requirements.

9. 8
Correction Factors of Cooling Capacity and Power at Different Situation
26 28 30 32
5
6
7
8
9
10
0.962
0.999
1.030
1.065
1.110
1.129
0.901
0.907
0.910
0.912
0.921
0.923
0.948
0.983
1.015
1.050
1.085
1.116
0.946
0.954
0.954
0.961
0.964
0.968
0.938
0.969
1.000
1.031
1.063
1.094
0.993
0.996
1.000
1.000
1.011
1.014
0.926
0.958
0.989
1.019
1.051
1.083
1.039
1.047
1.051
1.054
1.061
1.063
g:);5D
Inlet/Outlet water temperature ć˄Difference between inlet and outlet temperature is 5ć˅
Capacity Input Power Capacity Input Power Capacity Input Power Capacity Input Power
Outlet
temperature
of
evaportor ć
˄Temperature
difference
between
inlet and
outlet
is 5ć˅
Note：
the data in the table is based on the following operation condition：Inlet/Outlet cooled water temperature 12/7ć，Inlet/Outlet cooling water
temperature 30/35ć，the data of other conditions can be evaluated by the correction factors in above table

10. 9
MODEL Total Length A B C D E F G H L R S
WCFX10SR
WCFX12SR
WCFX15SR
WCFX18SR
WCFX20SR
WCFX23SR
WCFX24SR
WCFX27SR
WCFX30SR
3120
3120
3120
3200
3770
3770
3770
3790
3790
1025
1065
1100
1150
1175
1175
1175
1250
1250
348
348
374
387
417
387
417
412
412
294
321
321
336
366
336
366
361
361
524
540
541
580
580
580
580
630
630
102
102
130
143
143
143
143
143
143
178
200
200
216
216
216
216
241
241
86
100
100
102
102
102
102
115
115
1850
1850
1990
2030
2320
2290
2320
2340
2340
2693
2693
2693
2693
3277
3277
3277
3277
3277
4
4
4
5
5
5
5
6
6
4
4
4
5
5
5
5
6
6
Recommendation Space
WCFX10SR-30SR
'H'
'D'
'A'
'G'
'C'
'B'
Condensor Outlet S
Condensor Inlet S
152.5
760 'F' 'E' 460 'L' 3250
52
460
g:);5D
Dimension Data
Note˖
1ǃWater Piping To Be Supported To Minimize Load On Unit
2ǃExpect water pipe dimension is in inch,the others are in minimeter
3ǃVent and drain connections provided on evapoator and condenser
4ǃSufficient room must be allowed for evaporator and condenser water connections
5ǃWhen looking at (2) pass evaporator head connections, water outlet is left connec-tion,
water inlet is right connection as supplied by factory. Customer may reverse
this arrangement, but leaving water temperature sensor must be relocated to water
outlet. All water nozzles are IPS, with victaulic grooves.
6ǃDWG shows 2 pass right hand arrangment on both Con.and Evap
Evaporator Outlet
Evaporator Inlet
Recommendation
Space
Recommendion
Space
Recommendion
Space
Total Length
Electrical wiring
location

11. 10
MODEL Total Length
WCFX33TR
WCFX36TR
WCFX41TR
WCFX46TR
WCFX50TR
WCFX54TR
WCFX57TR
WCFX60TR
3790
3680
3690
4400
4400
4400
4430
4430
A B C D E F G H L R S
1220
1220
1280
1330
1370
1410
1370
1370
412
412
437
437
463
538
463
463
361
387
387
412
412
412
412
412
630
605
632
657
682
707
682
682
143
143
175
175
175
188
175
175
241
267
267
299
299
299
299
299
115
143
143
155
155
155
155
155
2180
2180
2400
2400
2450
2555
2455
2455
3277
3277
3277
3277
3277
3277
3836
3836
6
6
8
8
8
8
8
8
6
6
6
8
8
8
8
8
WCFX33TR-60TR
'A'
'L'
Recommended Space
'F' 'D' 'E'
'G'
'C'
'B'
'H'
3800
Con.Outlet S
152.5
460
820 460
52
g:);5D
Dimensional Data
Note˖
Recommended
Space
1ǃWater Piping To Be Supported To Minimize Load On Unit.
2ǃExpect water pipe dimension is in inch,the others are in minimeter.
3ǃVent and drain connections provided on evapoator and condenser.
4ǃSufficient room must be allowed for evaporator and condenser water connections
5ǃWhen looking at (2) pass evaporator head connections, water outlet is left connection,
water inlet is right connection as supplied by factory. Customer may reverse this
arrangement, but leaving water temperature sensor must be relocated to water outlet.
All water nozzles are IPS, with victaulic grooves.
6ǃDWG shows 2 pass right hand arrangment on both Con.and Evap.
Recommended
Space
Recommended
Length
Total Length
Con. Outlet S
Eva.Outlet
Eva.Inlet
Electrical wiring
location

12. 11
MODEL Total Length
WCFX64R
WCFX69R
WCFX73R
WCFX75R
WCFX77R
WCFX81R
4700
4600
4780
4780
4780
4700
A B C D E F G H R S
1400
1465
1500
1500
1500
1560
513
538
564
564
564
564
462
487
487
487
487
513
682
733
759
759
759
784
175
188
206
206
206
206
299
324
324
324
324
356
155
175
202
202
202
202
2490
2560
2600
2600
2600
2600
8
8
10
10
10
10
8
8
10
10
10
10
WCFX64R-81R
'F' 'D' 'E'
'A'
Con.Outlet S
'G'
'C'
Recommended Space
'B'
'H'
3800 4115
152.5
460
1100 460
52
g:);5D
Dimensional Data
Note˖
Recommended
Space
Recommended
1ǃWater Piping To Be Supported To Minimize Load On Unit.
2ǃExpect water pipe dimension is in inch,the others are in minimeter.
3ǃVent and drain connections provided on evapoator and condenser.
4ǃSufficient room must be allowed for evaporator and condenser water connections
5ǃWhen looking at (2) pass evaporator head connections, water outlet is left connection,
water inlet is right connection as supplied by factory. Customer may reverse this
arrangement, but leaving water temperature sensor must be relocated to water outlet.
All water nozzles are IPS, with victaulic grooves.
6ǃDWG shows 2 pass right hand arrangment on both Con.and Evap.
Space
Recommended
Length
Total Length
Con. Outlet S
Eva.Outlet
Eva.Inlet
Electrical wiring
location

13. 12
MODEL A B C D
WCFX10SR
WCFX12SR
WCFX15SR
WCFX18SR
WCFX20SR
WCFX23SR
WCFX24SR
WCFX27SR
WCFX30SR
WCFX33TR
WCFX36TR
WCFX41TR
WCFX46TR
WCFX50TR
WCFX54TR
WCFX57TR
WCFX60TR
WCFX64R
WCFX69R
WCFX73R
WCFX75R
WCFX77R
WCFX81R
2693
2693
2693
2693
3277
3277
3277
3277
3277
3277
3277
3277
3277
3277
3277
3836
3836
4115
4115
4115
4115
4115
4115
611
651
677
758
758
758
758
866
866
866
867
918
975
1032
1088
1032
1032
1032
1034
1185
1185
1185
1242
3200
3200
3200
3200
3800
3800
3800
3800
3800
3900
3900
3900
4400
4400
4400
4400
4400
4800
4800
4800
4800
4800
4800
1300
1300
1400
1400
1500
1500
1500
1600
1600
1600
1600
1600
1700
1750
1800
1800
1800
1800
1850
1900
1900
1900
2000
WCFX-R134a
WCFX-R134a Foundation Schematic
A
C
B
D
B
80X80
0~80 100
g:);5D
Note˖
If needed, expansion bolt or foundation bolt
which diameter is 18 mm, can be set
1ǃin view of its little vibration,the chillers can be put on the fondation without foundation bolt
2ǃIf the foundation is needed,the dimensions of it can be consulted the data of the table
3ǃwhen the chillers are put on the floor slab, the intensity of it should be great enough to bear
the running weight of them
4ǃ when building the foundation, the drain should be built around it, whilst the edges of the found-ation
should be smooth.

14. Products that perform...By people who care
A410029G02
Dunham-bush Yantai Co.,Ltd
No.1, Dunham-Bush Road, Laishan District, Yantai, Shandong, China
Tel: (0535) 6588999 Fax: (0535) 6581999
Post Code: 264003
www.dunham-bush.com.cn