IM1903WC 07/19
Installation Information
Water Piping Connections
Electrical Data
Microprocessor Control
Startup Procedures
Preventive Maintenance
WC Series Variable Speed Dual Screw Chiller Installation Manual
WC Series Variable Speed Dual Screw Chiller
175-275 Ton
60Hz
60 Hz
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Table of Contents
General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
WC Series Variable Speed Screw Chiller Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dimensional Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Rigging Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Center of Gravity
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Water Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Electrical System and Controls Safety Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Start-Up Service Data Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Refrigeration Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Reference Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Unit Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Preventative Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Startup and Troubleshooting Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Chiller Startup Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Revision Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Safety Considerations
Installing and servicing air conditioning and heating
equipment can be hazardous due to system pressure and
electrical components. Only trained and qualified service
personnel should install, repair or service heating and air
conditioning equipment. When working on heating and
air conditioning equipment observe precautions in the
literature, tags and labels attached to the unit and follow
other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have a
fire extinguisher available for all brazing operations.
NOTE: Before installing, check voltage of unit(s) to ensure
proper voltage.
WARNING: Before performing service or
maintenance operations on the system, turn off
main power switches to the unit. Electrical shock
could cause serious personal injury.
Application
Units are not intended for heating domestic potable water
by direct coupling. If used for this type of application, a
secondary heat exchanger must be used.
Moving and Storage
Move units in the normal “Up” orientation as indicated by
the labels on the unit packaging. When the equipment
is received, all items should be carefully checked against
the bill of lading to ensure that all crates and cartons
have been received in good condition. Examine units for
shipping damage, removing unit packaging if necessary
to properly inspect unit. Units in question should also
be internally inspected. If any damage is observed, the
carrier should make the proper notation on delivery receipt
acknowledging the damage. Units are to be stored in a
location that provides adequate protection from dirt, debris
and moisture.
Units are setup to be side picked using a fork lift. Some
units include pick bars allowing for picking from the end
with required fork lengths. Note unit labels and markings
for safe picking points. Do not pick the unit up from points
not specified and keep the unit level during transport and
handling. Using improper equipment handling methods can
result in damage and/or void the warranty.
General Installation Information
WARNING: To avoid equipment damage, do not
leave the system filled in a building without heat
during cold weather, unless adequate freeze
protection levels of antifreeze are used. Heat
exchangers do not fully drain and will freeze
unless protected, causing permanent damage.
Unit Location
Provide sufficient room to make water and electrical
connections. If the unit is located in a confined space,
provisions must be made for unit servicing. Locate the
unit in an indoor area that allows easy removal of the
access panels and has enough space for service personnel
to perform maintenance or repair. These units are not
approved for outdoor installation and, therefore, must be
installed inside the structure being conditioned. Do not
locate units in areas subject to freezing conditions.
WARNING: Do not store or install units in
corrosive environments or in locations subject
to temperature or humidity extremes (e.g. attics,
garages, rooftops, etc.). Corrosive conditions and
high temperature or humidity can significantly
reduce performance, reliability, and service life.
WARNING: To avoid equipment damage and
possible voiding of warranty, be sure that
properly sized strainers are installed upstream
of both brazed plate heat exchangers to protect
them against particles in the fluid.
5
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Model Nomenclature
All WC Series product is Safety listed under UL1995 thru ETL
Electrical Availability
Voltage Dual Variable Speed
208-230/60/3
460/60/3
●●●
575/60/3
7/21/2019
● - “CH” only models
W CH V E 275 * 4 A
2-3 5 6-8 10 11 12
Brand
W - WaterFurnace
Model Type
CH – Heat Recovery Chiller
Compressor Type
V – Variable Speed
Cabinet Configuration
E – Enclosed
Unit Capacity (Nominal Tons)
175,225,275
Vintage
* – Factory Use Only
Voltage
4 – 460/60/3
Electrical Option
A – Standard, Fused Disconnect
Control Option
B – Stand-Alone / BACnet
Non-Standard Options
SSS – None
Future Option
N – Not Applicable
Future Option
0 – Not Applicable
Future Option
0 – Not Applicable
Future Option
N – Not Applicable
Water Control Option
6FA - 6" w/iso vlv
Water Coil Option
B – Brazed-Plate
Refrigeration Option
3 – EEV
Cabi net Optio n
S – Sta ndard
Sound Ki t Opt ion
B – Sound Kit
13 15
14 16 17 - 19 20 21 22 23 24-2691
4
B B S 3 B 6FA N 0 0 N SSS
Fus
ed
Di s
co
nn
ec
t
o
r
y U
s
e
e
O
O
nl
y
rF
ur
e
a
t Rec
o
o
r T
y
p
e
a
ble
Sp
o
n
f
igu
r
a
osed
c
it
y
(
N
o
27
5
r
n
a
o
v
e
e
p
e
e
a
t
i
om
ace
e
e
d
i
o
n
m
in
a
l T
ons
)
e
e
r
y C
C
hiller
WCHVE275*4AABS3B6FAN00NSSS
6
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
The WC Series Variable Speed Screw Chiller Features
HydroLink2 Aurora controls
platform is a field proven
communicating compressor
management control
Low impedance line reactors
reduce harmonic noise and
improve power factor
Fused disconnects for
each compressor
Factory installed flow
switches and modulating
isolation valves
Variable speed drive
integrated with
compressor provides
envelope control for
improved reliability
HydroLink2
is a NiagraAX
based system
controller
Fused power supply for
high short circuit current
rating
2
7
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
The WC Series Variable Speed Screw Chiller Features
High efficiency compact
R134a screw compressors for
efficiency, reliability and
capacity control
Acoustical sound enclosure
for maximum sound reduction
Structural Steel
frame to reduce
vibration
Flange style
water connections
for an easier and
faster connection
High efficiency
brazed plate
heat exchangers
for efficiency and
compact size
Electronic expansion valves
for enhanced efficiency and
control
Water headers for
integrated parallel flow
Serviceable core
filter driers
Large touch
screen tablet with
high quality HMI
y
y
y
y
y
e
s
d
e
e
s
8
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Operating Limits
Condenser Evaporator
Fluid Limit
˚F ˚C ˚F ˚C
Min Entering Water 40 4.4 45 7.2
Min Entering Brine 50 10.0 30 -1.1
Min Leaving Brine 70 21.1 25 -3.9
Min Leaving Water 70 21.1 40 4.4
Max Entering Water/Brine 133 56.1 80 26.7
Max Leaving Water/Brine 140 60.0 70 21.1
Min Differential Temperature 7 3.9 5 2.8
Max Differential Temperature 30 16.7 20 11.1
Flow Rate Limit
gpm/ton L/min-kW gpm/ton L/s-kW
Minimum fl ow rate 1 3.8 1 3.8
Maximum fl ow rate 4.5 17.0 4.5 17.0
Ambient Temperature ˚F ˚C
Minimum Ambient 55 12.8
Maximum Ambient 95 35.0
7/22/19
9
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Dimensional Data
PP
PP
PP
PP
PP
PP
PP
PP
PP
PP
PP
PP
7RXFKVFUHHQ
GLVSOD\
$QVL
)ODQJH
PP
PP
PP
PP
D
E
10
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Dimensional Data cont.
PP
PP
PP
PP
+,*+92/7$*(
&21752/%2;
/,1(5($&725%2;
)86(%2;
/2:92/7%2;
$QVL
)ODQJH
32:(5,1/(7
A
DETAIL A
11
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Dimensional Data cont.
&RQGHQVHU
(YDSRUDWRU
&RPSUHVVRU
)LOWHU
'
&RQGHQVHU2XWOHW
&RQGHQVHU,QOHW
(YDSRUDWRU,QOHW
(YDSRUDWRU2XWOHW
)
LOWHU'ULHU
)LOWHU'ULHU
Q
OHW
O
HW
12
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Rigging Data
USE SPREADER BARS
TO PREVENT DAMAGE
OF UNIT
13
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Center of Gravity
C
D
B
A
F
E
G
hE/d t,s ϭϳϱ t,sϮϮϱ t,sϮϳϱ
ϯϬ͘ϴΗ ϯϬ͘ϴΗ ϯϬ͘ϴΗ
& ϳϭ͘ϯΗ ϳϭ͘ϯΗ ϳϭ͘ϯΗ
' ϯϲ͘ϱΗ ϯϲ͘ϱΗ ϯϲ͘ϱΗ
EdZK&'Zs/dz
1
MODEL SHIPPING W EIGHT NET WEIGHT
WCHVE 175 13,000 13,000
WCHVE 225 12,500 12,500
WCHVE 275 12,000 12,000
14
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Water Quality
1.0. Minimum Fluid Volume
A. Water cooled chillers require a minimum amount of
source and load side fl uid volume to ensure accurate
and stable temperatures during system operation.
For normal air conditioning type applications, it is
recommended to use at least 7 gallons/ton.
B.
Applications that require more precise temperature
control or low loading will occur the minimum
fl uid volume shall be no less than 10 gallons/ton.
Installation of a buffer tank that will properly mix the
fl uid is recommended.
1.1. Water Cooled Chiller Sizing
A. Chillers should be adequately sized for optimal system
effi ciency and run time. Oversizing by more than 15%
can diminish performance resulting in higher power
consumption, short cycling of compressors, and
unstable conditioning temperatures.
B. In applications where the minimum load is signifi cantly
less than the design condition, it is better to install 2
smaller Chillers for load matching rather than a single
large Chiller.
1.2. Chiller Piping
A. Multiple Chillers can be installed in series or parallel
confi gurations. The preferred system design is to pipe
the equipment in parallel due to its simplicity and
fl exibility. In parallel systems, the Chiller equipment can
vary in size as long as fl ow rate and system volume are
accounted for.
B. Piping equipment in series is not desired; however,
it can be done if proper guidelines are followed.
Always observe proper temperature and fl ow rate
requirements for each unit. Sometimes this method is
desired to achieve larger temperature differences.
1.3. Strainers
A. All brazed-plate heat exchangers shall have a
strainer within 8 ft of the water/brine inlet. It is highly
recommended to use 30 mesh in order to provide
maximum fi ltration. In any case, the strainers should
never have a mesh size larger than 60 or less than 20.
B. Failure to install proper stainers and perform regular
service can result in serious damage to the unit, and
cause degraded performance, reduced operating life
and failed compressors. Improper installation of the
unit (which includes not having proper strainers to
protect the heat exchangers) can also result in voiding
the warranty.
C. Strainers should be selected on the basis of acceptable
pressure drop, and not on pipe diameter. The strainers
selected should have a pressure drop at the nominal
fl ow rate of the units; low enough to be within the
pumping capacity of the pump being used.
1.4. Flow Sensing Devices
A. A fl ow switch or equivalent must be installed on the
evaporator for each unit to be installed. If the unit is to
operate as both modes (heating/cooling), a fl ow switch
is needed on both heat exchangers.
B. A differential pressure switch can be used in place of a
fl ow switch. The differential switch must be capable of
pressure range as indicated in the pressure drop tables.
1.5. Water Quality
A. General: Reversible chiller systems may be successfully
applied in a wide range of commercial and industrial
applications. It is the responsibility of the system
designer and installing contractor to ensure that
acceptable water quality is present and that all
applicable codes have been met in these installations.
B. Water Treatment: Do not use untreated or improperly
treated water. Equipment damage may occur. The
use of improperly treated or untreated water in this
equipment may result in scaling, erosion, corrosion,
algae or slime. The services of a qualifi ed water
treatment specialist should be engaged to determine
what treatment, if any, is required. The product
warranty specifi cally excludes liability for corrosion,
erosion or deterioration of equipment.
The heat exchangers in the units are 316 stainless steel
plates with copper brazing. The water piping in the
heat exchanger is steel. There may be other materials
in the building’s piping system that the designer may
need to take into consideration when deciding the
parameters of the water quality.
If an antifreeze or water treatment solution is to be
used, the designer should confi rm it does not have a
detrimental effect on the materials in the system.
C. Contaminated Water: In applications where the
water quality cannot be held to prescribed limits, the
use of a secondary or intermediate heat exchanger
is recommended to separate the unit from the
contaminated water.
The following table outlines the water quality
guidelines for unit heat exchangers. If these conditions
are exceeded, a secondary heat exchanger is required.
Failure to supply a secondary heat exchanger where
needed will result in a warranty exclusion for primary
heat exchanger corrosion or failure.
WARNING: Must have intermediate heat exchanger
when used in pool applications.
15
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Water Connections
Water Piping must be installed in accordance with
application codes and per necessary standards. Supply
and return connections should be connected per units’
directions. Strainers are required on supply to machine
per engineer specification to prevent heat exchanger
fouling from occurring.
Before start-up can occur, water must be CLEAN and
proper procedures and care should be implemented
in order to ensure and maintain a clean system. Water
should be treated and clean per necessary standards
before start-up is scheduled. Each water header is
equipped standard with a temperature well sensor
for supply and return water temperatures of the units’
performance. Also included is a flow switch located
on the exit side of the heat exchanger to ensure flow
through the heat exchangers, which is integrated into
the controls and is adjusted in pre-shipping testing
procedures.
Furthermore, it is recommended to provide water
isolation valves for proper isolation and maintenance of
the unit, pumps, and strainers.
Water Quality Cont.
1.6. Insulation
A. Chillers are built with factory installed insulation on any
surface that may be subject to temperatures below the
room dew point.
1.7. Brine Applications
A. Applications where the leaving fl uid temperature goes
below 40°F a suitable brine solution must be used.
Failure to do so can cause immediate damage to the
system. The brine must be approved for use with heat
exchangers. Automotive antifreeze solutions are not
suitable for use in brazed plate heat exchangers.
B.
The freeze detection must be adjusted appropriately
for brine applications. The brine solution
concentration should be at least 15°F below the
lowest leaving fl uid temperature.
Surface Condensation Chart
Room Ambient Condition
Surface Temperature
50°F 35°F 0°F
Normal (Max 85°F, 70% RH) 1/2" 3/4" 1"
Mild (Max 80°F, 50% RH) 1/8" 1/4" 1/2"
Severe (Max 90°F, 80% RH) 3/4" 1" 2"
Material Copper 90/10 Cupronickel 316 Stainless Steel
pH Acidity/Alkalinity
7 - 9 7 - 9 7 - 9
Scaling
Calcium and
Magnesium Carbonate
(Total Hardness)
less than 350 ppm
(Total Hardness)
less than 350 ppm
(Total Hardness)
less than 350 ppm
Corrosion
Hydrogen Sulfide
Less than 0.5 ppm (rotten egg
smell appears at 0.5 ppm)
10 - 50 ppm Less than 1 ppm
Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm
Chlorine Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Chlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm
Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10 - 50 ppm
Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm
Ammonia Chloride Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Nitrate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Hydroxide Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Ammonia Sulfate Less than 0.5 ppm Less than 0.5 ppm Less than 0.5 ppm
Total Dissolved Solids (TDS) Less than 1000 ppm 1000 - 1500 ppm 1000 - 1500 ppm
LSI Index +0.5 to -0.5 +0.5 to -0.5 +0.5 to -0.5
Iron Fouling
(Biological Growth)
Iron, FE
2
+ (Ferrous)
Bacterial Iron Potential
< 0.2 ppm < 0.2 ppm < 0.2 ppm
Iron Oxide
Less than 1 ppm, above this
level deposition will occur
Less than 1 ppm, above this
level deposition will occur
Less than 1 ppm, above this
level deposition will occur
Erosion
Suspended Solids
Less than 10 ppm and filtered
for max. of 600 mic
ron size
Less than 10 ppm and filtered
for max. of 600 micron size
Less than 10 ppm and filtered
for max. of 600 micron size
Threshold Velocity
(Fresh Water)
< 6 ft/sec < 6 ft/sec < 6 ft/sec
NOTES: Grains = ppm divided by 17
mg/L is equivalent to ppm
2/22/12
Water Quality Guidelines
16
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Electrical Data
Model
Rated
Voltage
Voltage
Min/Max
Compressor
1
Total
Unit
FLA
Min
Circ
Amp
Min
Fuse/
HACR
Max
Fuse/
HACR
MOA RLA LRA
2
175 460/60/3 414/506 190.0 156.0 20.0 312.0 351.0 400 500
225 460/60/3 414/506 225.0 185.0 20.0 370.0 416.0 450 600
275 460/60/3 414/506 290.0 240.0 20.0 480.0 540.0 600 800
HACR circuit breaker in USA only 7/22/19
1 - MCC, RLA, & LRA rating per compressor. Breaker & FLA sized for both compressors.
2 - LRA is compressor motor starting current
Electrical Connections
Compressor B
fused disconnect
Class J Protective
Fuse for incoming
power
High Voltage
line reactors
Cooling Fans
Low Voltage
control transformer
Transformer to
VFD power
Ground
Block
Compressor A
fused disconnect
300
B
B
B
t
e
e
e
e
e
e
e
T
T
T
T
T
T
T
V
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
e
e
e
e
e
e
e
e
e
e
e
s
17
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Wiring Schematics
DUAL SCREW WCHVE 275/225/175
97P920-03 / B 7/08/19
Cyan
(125)
Purple (126)
OF F
Fut ur e U se
1
2
3
4
5
Yellow( 101 )
Yellow( 102 )
Grey (103)
Grey (104)
Blue (105)
Blue (106)
Black (107)
Black (108)
Purple (121)
Yellow (122)
Pink (123)
23
Blue (124)
24
10
9
T
12
11
T
15
13
Black (115)
Grey (114)
Red (113)
Blue (116)
Blue (117)
Brown
RED
Blue
Black
14
T
HR1-COMP A SUCT TEMP
Black (318)
White (317)
White (010)
HR1-CONDENSER FLOW SW ITCH
White (209)
White (210)
Purple (211)
Purple (212)
Blue (021)
17
16
PB3
2
1
3
Gr een (01 5)
Yellow( 201 )
Yellow( 202 )
Grey (203)
Grey (204) Blue (205 )
Blue (206)
Black (207)
Black (208)
P8
MOTOR
P6
RS485
P7
ZO NE
P9
ABC
ANA ACC2 DH DIV
NO
COM
K6
NO
COM
K5
C
R
L1
L1
L2
L2
P10
P5
P11
C
R
(-)
(+)
C
R
(-)
(+)
C
R
(-)
(+)
P4 P2
K1
K2K3
HA2 HA1 SGI
LOOP VS DAT A VS PUMP PUMP SLAVE
P3
V+
C
R
TX
RX
+5
P14
LLT
P1
LATFLO WLWT
CT2
43
CT2
43
CT1
21
CT1
21
Status
G
DISCH
P16
P17
P18
P15
(Aurora Expansion Board)
AXB™-COM PRESSOR A
SW1
Modbus Add. I D
Fut ur e U se
1
2
3
4
5
ONOF F
Fut ur e U se
Acc 2 – Dip 1
Acc 2 – Dip 2
S +5 C CC2 1 INOUT+5S
SCT
213
HW
12
C
P12
SCP
21
3
18
GR EEN
HR1-COMP A SUCT PRESS
19
20
Red (118)
Grey (119)
Black (120)
Purple (221)
Yellow (222)
Pink (223)
Blue (224)
Black (215)
Grey (214)
Red (213)
Blue (216)
Blue (217)
T
HR2-COMP B SUCT TEMP
White (109)
White (110)
Purple (111)
Purple (112)
17
16
HW
P8
MOTOR
P6
RS485
P7
ZO NE
P9
ABC
STEPPER
ANA ACC2 DH DIV
NO
COM
K6
NO
COM
K5
C
R
L1
L1
L2
L2
P10
P5
P11
C
R
(-)
(+)
C
R
(-)
(+)
C
R
(-)
(+)
P4 P2
K1
K2K3
HA2 HA1 SGI
LOOP VS DATA VS PUMP PUMP SLAVE
P3
V+
C
R
TX
RX
+5
P14
LLT
P1
LATFLO WLWTEWT
CT2
4 3
CT2
4 3
CT1
2 1
CT1
2 1
Status
G
DISCH
P16
P17
P18
P15
(Aurora Expansion Board)
S +5 C CC2 1 INOUT+5S
SCT
2 13
HW
12
C
P12
SCP
2 1
3
18
GR EEN
HR2-COMP B SUCT PRESS
19
20
Red (218)
Grey (219)
Black (220)
HR1
3
4
T
1
2
T
5
6
7
8
FP1-A
FP2-A
LP S-A
HPS-A
17
Reactor A
Cooling Fan
Reactor B
Cooling Fan
White
Bla ck
White
Bla ck
HR3
18
Blue Jump er
3
4
T
1
2
T
FP1-B
FP2-B
Yellow (024)
Blue (022)
CFM
P13
P4
SW1
P5
JW2
P9
LO
O/B
Y2
W
DH
P8 P7
RS485 NET
RS485 NET
P6
RS485 EXP
P3
SW2
On
Fut ur e U se
L Output T ype
CC – Dual/S ingle
Acc – Dip 5
Acc – Dip 4
RV – B/O
FP2 – 15°F/30°F
FP1 – 15°F/30°F
Com1
LED5
Com2
LED5
Tes t Mo de
F1-3A
P1
C
PWM
1
2
3
4
5
6
7
8
ALM
ALG
ACC COM
ACC NO
ACC NC
R
C
G
Y1
EH2CEH1
C
COC
R - +
Of f
Fault
LED1
R
Status
LED3
Config
LED2
CC2
CC
F
C
R F FG CC CCG
CC2
HI
CC2
LO
CC2
G
REVREV FP1 FP 1 FP 2 FP 2 LPS LPSHP SHPS
K1-RV Relay
K2-CC Rel ay
K3-CC2 Relay
K4-Fan Relay
K5-Alarm
Relay
K6-Acc
Relay
C
C
R
ES
LS
P2
EH1
Y
G
G
G
C
-
+R
CFM
P13
P4
SW1
P5
JW2
P9
LO
O/B
Y2
W
DH
P8 P7
RS485 NET
RS485 NET
P6
RS485 EXP
P3
SW2
On
Fut ur e U se
L Output T ype
CC – Dual/S ingle
Acc – Dip 5
Acc – Dip 4
RV – B/O
FP2 – 15°F/30°F
FP1 – 15°F/30°F
Com1
LED5
Com2
LED5
Test M ode
F1-3A
P1
C
PWM
1
2
3
4
5
6
7
8
ALM
ALG
ACC COM
ACC NO
ACC NC
R
C
G
Y1
EH2CEH1
C
CO
C
R
-
+
C
R - +
Of f
Fault
LED1
R
Status
LED3
Config
LED2
CC2
CC
F
C
R F FG CC CCG
CC2
HI
CC2
LO
CC2
G
REVREV FP1 FP 1 FP 2 FP 2 LPS LPSHPSHPS
Aurora Base Control
(ABC-COMPRESSOR B)
K1-RV Relay
K2-CC Rel ay
K3-CC2 Relay
K4-Fan Relay
K5-Alarm
Relay
K6-Acc
Relay
C
C
R
ES
LS
P2
EH1
Y
G
G
G
Yellow (013)
22
23
24
21
10
9
T
12
11
T
15
13
Brown
RED
Blue
Black
14
COMP B
DISCH TEMP
T1T2T3
CO MP A
ST O +
ST O -
+
-
GN D
Modbu s
L
N
Red
(128)
Red
(127)
T
COMP A
DISCH TEMP
X02-2
13
4
5
2
STO-A
Yellow (014)
Blue (012)
22
21
E-STOP
HR2
5
6
7
8
LP S-B
HPS-B
HR2
Blue Jump er
X2 to 4
HR1-EVAP FL OW SWITCH
HR2-CONDENSER TEMPS
HR1-DISCHARGE PRESSURE
Yellow
(001)
Blue
(003)
LW T
EWT
EWT
STEPPER
Green
White
Red
Bla ck
White (SA5)
Bla ck (SA4)
Yellow (SA3)
Red (SA2)
Ora nge (SA1 )
White (SB5)
Bla ck ( SB4)
Yellow (SB3)
Red (S B2)
Ora nge ( SB1)
HR2-CONDENSER FLOW SWITCH HR2-EVAP FLOW SWITCH
HR1-EVAP WATER TEMPS
HR2-DISCHARGE PRESSURE
LW T
EWT
SW1
Modbus Add. I D
Fut ur e U se
Acc 2 – Dip 1
Acc 2 – Dip 2
ON
Green
White
Blue (002)
Yellow (002)
Green
White
Red
Bla ck
Blue (011)
TH ERMIST ERGRO UND
FUSE
Leg en d
RELAY CONT ACTS-
NO ,NC
T
SCRE W CON NECTO R
JU N CT I ON P OI NT
RED
PRESSURE
TRA NSD UCER
T
TE MP S ENSOR
LPS-LOW PRESSURE
SWITC H
HP S-HIGH PRES SURE
SWITC H
COMP A
CONTROL BOARD
AXB™-COMPRESSOR B
Aurora Base Control
(ABC-COMPRESSOR A)
Hydrolink 2
Controller
~
-
~
+
24VAC/DC
RS-485-1
S - +
EEV
HR4
4
3
2
1
EEV
HR5
4
3
2
1
Red
White
Green
Bla ck
Red
White
Green
White (SB5)
Bla ck (SB4)
Yellow (SB3)
Red (SB2)
Ora nge (SB1)
White (SA5)
Bla ck ( SA4)
Yellow (SA3)
Red (S A2)
Ora nge ( SA1)
Bla ck
POWER SUPPLY
BO ARD
R C
P1
P4
P3
GND
5A
2
3
4
1
P2
2
3
4
1
3
4
5
2
1
3
4
5
2
1
P5
GN
D
24
V
+5V
+24V
USB
USB
Yellow (019)
Blue (020)
X02-1
Bla ck
25
26
X05-2
X05-1
DI2 +
DI2 -
Cyan
(225)
Purple (226)
T1T2T3
CO MP A
ST O +
ST O -
+
-
GN D
Modbu s
L
N
Red
(228)
Red
(227)
T
X02-2
Green
White
COMP A
CONTROL BOARD
X02-1
Bla ck
25
26
X05-2
X05-1
DI2 +
DI2 -
13
4
5
2
STO-B
Drain
Drain
Drain
Drain
Drain
HMI
PO WER
SEC
18
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Wiring Schematics cont.
DUAL SCREW WCHVE 275/225/175
97P920-03 / B 7/08/19
NOTES:
1. B ACn et ADD RE SIN G CAN BE MAN AGED THRO UGH TH E UNIT MOUNTED HMI (USER
INTERF ACE)
GRO UND
Legend
SCRE W
CONNECTOR
JU N CT I ON P OI NT
3-WAY OR BUTTERFLY
VALVE
PSB
POWER SUPPLY BOARD
ABC SW2 Accessory Relay
DESCRIPTION SW2-4 SW2-5
Not Used ON ON
Cycle with Compressor OFF OFF
Water Valve Slow Opening ON OFF
Not Used OFF ON
SW1-4 SW1-5 DESCRIPTION
ON ON Not Us ed
OFF ON Cycles with CC (Normal)
ON OFF Not Us e d
OFF OFF Not Used
AXB A ccessory 2 DIP Set tings
SW1
Modbus Add. ID
Future U se
1
2
3
4
5
ONOF F
Future U se
Acc 2 – Dip 1
Acc 2 – Dip 2
SW2
On
Fu tur e U se
L Output Type
CC – Dual/Single
Acc – Dip 5
Acc – Dip 4
RV – B/O
FP 2 – 15 °F /30 °F
FP 1 – 15 °F /30 °F
1
2
3
4
5
6
7
8
Off
PB2
2
1
3
White (304)
White (308)
White (312)
White (316)
Orange (307)
Orange (303)
Orange (311)
Orange (315)
Black (301)
Black (301)
Black (305)
Red (314)
Black (313)
Red (310)
Black (309)
Red (302)
Red (306)
Black (305)
Black (309)
Black (313)
Red (302)
Red (306)
Red (310)
Red (314)
HR3
USB
PRI
SEC
RS-485-1
S - + S - +
RS-485-2
A1
A2
A3
A4
A5
A6
A7
A8
C
C
C
C
U1
U2
U3
U4
U5
U6
U7
C
C
C
C
U8
U9
U12
U13
U14
U15
C
C
C
C
U16
U10
U11
D1
D4
D5
D6
D7
C
C
C
C
D8
D2
D3
D9
C
D10
24VAC/DC
~
-
~
+
SHLD
LxH
LxL
ABCD
outputs
inputs
inputs
outpu ts
D1 D2 D3 D4 D5
White (304)
Orange (307)
White (308)
Orange (311)
White (312)
Orange (315)
White (316)
Orange (303)
Blue (95)
Green (99)
D6 D7 D8 D9 D10
BAC net Connection s
NET+
NET-
COM
NOTE 1
PB3
2
1
3
Yellow (90)
Blue (89)
To ABC-A P8
To ABC-B P8
Black
Orange
Red
White
Yellow
Blue
HMI
PO WER
Yellow (96)
19
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Wiring Schematics cont.
DUAL SCREW WCHVE 275/225/175
97P920-03 / B 7/08/19
Black (413)
Black (412)
FIELD INSTALLED
GROUN D
FUSE BOX
GROUN D
Transformer
1
115V
21
F1
F2
NOTE 3
Black (405)
Black (406)
PB1
460V
Black (407)
White (408)
NOTE 4
F3
NOTE 2
F4
UNIT POWER SUPPLY
MAIN FUSES 800A
GROUN D BLOCK
CHAS SIS
GROUN D
LINE
REACTOR
A
LINE
REACTOR
B
L1 L2 L3
L1 L2 L3
L1
T1
L2
T2
L3
T3
FUSED
DISCONNECT
SWITCH B
FUSED
DISCONNECT
SWITCH A
L1
T1
L2
T2
L3
T3
F1
NOTE 3
T1 T2 T3
COMP A
CONTROL
BOARD
STO +
STO -
DI2 +
DI2 -
+
-
GND
L
N
XO5
X02-1
X02-2
T1 T2 T3
STO +
STO -
DI2 +
DI2 -
+
-
GND
L
N
XO5
X02-1
X02-2
COMP B
CONTROL
BOARD
REACTOR
GROUN D
Transformer
2
24 V
PB3
2
1
3
Transformer
3
24 V
NOTE 1
460 V
460 V
Purple
Purple
Bla ck
Bla ck
Bla ck/White
Yellow
Bla ck/Whit e
Yellow
Blue (320)
Yellow (322)
Blue (319)
Yellow (321)
NOTE 5
S1 S2 S3
Black (419)
Black (420)
Black (403)
Black (404)
Black (401)
Black (402)
F2
Control Power Disconnect
White (416)
White (415)
Black (409)
Black (410)
FACTORY LOW VOLT AGE LIN E
FACORY L IN E VOL TAGE 46 0V
GRO UND
FUSE
SCRE W
CONNECTOR
FACORY L IN E VOL TAGE 11 5V
NOTES:
1. Class 2 transformers
2. I ns tal le d f us es F 1 a n d F2 - 7A
3. I ns tal le d f us e- F 3 a n d F4 – 4A
4. Loc at ed I ns ide High Vo lt Box
5. Loc at ed Ins ide Low Vol t Box
TRA NSF ORMER
LINE RE ACTOR
L1
T1
L2
T2
L3
T3
FUS ED DISCO NNE CT
Legend
20
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Evaporator Pressure Drop
Condenser Pressure Drop
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
WaterFurnace WC Series Installation guide
- Category
- Heat pumps
- Type
- Installation guide
Ask a question and I''ll find the answer in the document
Finding information in a document is now easier with AI
Related papers
Other documents
-
Reznor P6SD Product information
-
-
LG RCWW200RAAA.AAAAEAA Owner's manual
-
McQuay AC 58A Applications Manual
-
Approx APPNB17B Datasheet
-
Johnson Controls RH Series Engineering Manual
-
LXE HX1 User manual
-
LG ACHH067LBAB User manual
-
Movincool CMW30 Service Manuals
-
