wc series variable speed dual screw chiller wc series
TRANSCRIPT
IM1903WC 07/19
Installation Information
Water Piping Connections
Electrical Data
Microprocessor Control
Startup Procedures
Preventive Maintenance
WC
Seri
es
Vari
ab
le S
peed
Du
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cre
w C
hill
er
Inst
alla
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an
ual
WC Series Variable Speed Dual Screw Chiller 175-275 Ton60Hz
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
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WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Safety ConsiderationsInstalling 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.
ApplicationUnits 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 StorageMove 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 InformationWARNING: 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 LocationProvide 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
208-230/60/3460/60/3 ● ● ●575/60/3
7/21/2019● - “CH” only models
W CH V E 275 * 4 A2-3 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
Cabinet Option S – Standard
Sound Kit Option B – Sound Kit
13 1514 16 17 - 19 20 21 22 23 24-2691 4B B S 3 B 6FA N 0 0 N SSS
Fused Disconnect
ory Usee OOnly
rFur
eat Reco
or Typeable Sp
onfiguraosed
city (No275
rna
ove
epee
ati
om
ace
e
ed
ion
minal Tons)
e
ery CChiller
WCHVE275*4AABS3B6FAN00NSSS
6
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
The WC Series Variable Speed Screw Chiller FeaturesHydroLink2 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 reductionStructural 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 flowServiceable core
filter driers
Large touch
screen tablet with
high quality HMI
yyyyy
e
s
d
ee
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
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WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Dimensional Data
DE
10
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Dimensional Data cont.
ADETAIL A
11
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Dimensional Data cont.
12
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Rigging Data
USE SPREADER BARSTO PREVENT DAMAGEOF UNIT
13
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Center of Gravity
C D
BA
F
E
G
1
MODEL SHIPPING WEIGHT NET WEIGHTWCHVE 175 13,000 13,000WCHVE 225 12,500 12,500WCHVE 275 12,000 12,000
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WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Water Quality1.0. 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.
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WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Water ConnectionsWater 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 ConditionSurface 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 SteelpH Acidity/Alkalinity 7 - 9 7 - 9 7 - 9
ScalingCalcium and
Magnesium Carbonate(Total Hardness)
less than 350 ppm(Total Hardness)
less than 350 ppm(Total Hardness)
less than 350 ppm
Corrosion
Hydrogen SulfideLess 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, FE2+ (Ferrous)Bacterial Iron Potential
< 0.2 ppm < 0.2 ppm < 0.2 ppm
Iron OxideLess 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
ErosionSuspended Solids
Less than 10 ppm and filtered for max. of 600 micron 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
ModelRated
VoltageVoltage Min/Max
Compressor1 TotalUnitFLA
MinCircAmp
MinFuse/HACR
MaxFuse/HACRMOA RLA LRA2
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 7/22/191 - MCC, RLA, & LRA rating per compressor. Breaker & FLA sized for both compressors.2 - LRA is compressor motor starting current
Electrical Connections
Compressor Bfused 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
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17
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Wir
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P4
SW1
P5
JW2
P9
LO O/B
Y2 W DH
P8P7
RS48
5 NET
RS48
5 NET
P6
RS48
5 EXP
P3
SW2On
Futu
re U
se
L Ou
tput T
ype
CC –
Dual/
Sing
leAc
c – D
ip 5
Acc –
Dip
4RV
– B/
OFP
2 – 15
°F/3
0°F
FP1 –
15°F
/30°
F
Com1
LED5
Com2
LED5
Test
Mod
e
F1-3A
P1
CPWM 1 2 3 4 5 6 7 8
ALM
ALG
ACC
COM
ACC
NOAC
C NC
R C G Y1
EH2
CEH
1C
COC
R-
+
Off
Faul
tLE
D1 R
Stat
usLE
D3
Conf
igLE
D2
CC2
CCF
CR
FFG
CCCC
GCC2
HICC
2LO
CC2 G
REVR
EVFP
1FP
1FP
2FP
2LPS
LPSH
PSHP
S
K1-RV Relay
K2-CC Relay
K3-CC2 Relay
K4-Fan Relay
K5-A
larm
Relay K6
-Acc
Re
lay
CC
R
ES LS
P2EH
1
YG
G
G
C-
+R
CFM P1
3
P4
SW1
P5
JW2
P9
LO O/B
Y2 W DH
P8P7
RS48
5 NET
RS48
5 NET
P6
RS48
5 EXP
P3
SW2On
Futu
re U
se
L Ou
tput T
ype
CC –
Dual/
Sing
leAc
c – D
ip 5
Acc –
Dip
4RV
– B/
OFP
2 – 15
°F/3
0°F
FP1 –
15°F
/30°
F
Com1
LED5
Com2
LED5
Test
Mod
e
F1-3A
P1
CPWM 1 2 3 4 5 6 7 8
ALM
ALG
ACC
COM
ACC
NOAC
C NC
R C G Y1
EH2
CEH
1C
COC
R-
+C
R-
+
Off
Faul
tLE
D1 R
Stat
usLE
D3
Conf
igLE
D2
CC2
CCF
CR
FFG
CCCC
GCC2
HICC
2LO
CC2 G
REVR
EVFP
1FP
1FP
2FP
2LPS
LPSH
PSHP
S
Auro
ra B
ase C
ontro
l(A
BC-C
OMPR
ESSO
R B)
K1-RV Relay
K2-CC Relay
K3-CC2 Relay
K4-Fan Relay
K5-A
larm
Relay K6
-Acc
Re
lay
CC
R
ES LS
P2EH
1
YG
G
G
Yello
w (0
13)
2223 24
21
10 9T
12 11T
15 13
Brow
n
RED
Blue
Blac
k
14
COM
P B
DIS
CH T
EMP
T1T2
T3
COM
P A
STO
+
STO
-
+ - GN
D
Mod
bus
L N
Red
(128
)Re
d(1
27)T
COM
P A
DIS
CH T
EMP
X02-
213
4
5 2ST
O-A
Yello
w (0
14)
Blue
(012
)
22 21
E-ST
OP
HR2 5 6 7 8
LPS-
B
HPS
-B
HR2
Blue
Jum
per
X2 t
o 4
HR1
-EV
AP F
LOW
SW
ITCH
HR2
-CO
ND
ENSE
R TE
MPS
HR1
-DIS
CHA
RG
E P
RESS
URE
Yello
w(0
01)
Blue
(003
)
LWT
EWT
EWT
STEP
PER
Gre
enW
hite
Red
Blac
k
Whi
te (S
A5)
Blac
k (S
A4)
Yello
w (S
A3)
Red
(SA2
)
Ora
nge
(SA1
)
Whi
te (S
B5)
Blac
k (S
B4)
Yello
w (S
B3)
Red
(SB2
)O
rang
e (S
B1)
HR2
-CO
ND
ENSE
R FL
OW
SW
ITCH
HR2
-EV
AP F
LOW
SW
ITCH
HR1
-EV
AP W
ATER
TEM
PS
HR2
-DIS
CHA
RG
E P
RESS
URE
LWT
EWT
SW1
Modbus Add. IDFuture Use
Acc 2 – Dip 1Acc 2 – Dip 2
ON
Gre
enW
hite
Blue
(002
)Ye
llow
(002
)
Gre
enW
hite
Red
Blac
k
Blue
(011
)
THER
MIS
TER
GRO
UND
FUSE
Lege
nd
RELA
Y CO
NTAC
TS-
NO,N
C
T
SCRE
W C
ONNE
CTO
R
JUNC
TION
POI
NT
RED
PRES
SURE
TR
ANSD
UCER
TTE
MP
SENS
OR
LPS-
LOW
PRE
SSUR
E SW
ITCH
HPS-
HIGH
PRE
SSUR
E SW
ITCH
COM
P A
CO
NTR
OL
BOA
RD
AXB™
-COM
PRES
SOR
B
Auro
ra B
ase C
ontro
l(A
BC-C
OMPR
ESSO
R A)
Hyd
rolin
k 2
Cont
rolle
r~ -
~ +24
VAC
/DC
RS
-485
-1
S
-
+
EEV
HR4 4 3 2 1
EEV
HR5 4 3 2 1
Red
Whi
te
Gre
en
Blac
k
Red
Whi
te
Gre
en
Whi
te (S
B5)
Blac
k (S
B4)
Yello
w (S
B3)
Red
(SB2
)
Ora
nge
(SB1
)
Whi
te (S
A5)
Blac
k (S
A4)
Yello
w (S
A3)
Red
(SA2
)
Ora
nge
(SA1
)
Blac
k
POW
ER S
UPP
LY
BOA
RDRC
P1 P4 P3
GND
5A
234 1
P2
234 1 345 2 1345 2 1
P5
GND
24V +5
V
+24V USB
USB
Yello
w (0
19)
Blue
(020
)
X02-
1
Blac
k
2526
X05-2
X05-1
DI2
+
DI2
-
Cyan
(225
)
Purp
le (2
26)
T1T2
T3
COM
P A
STO
+
STO
-
+ - GN
D
Mod
bus
L N
Red
(228
)Re
d(2
27)T
X02-
2
Gre
enW
hite
COM
P A
CO
NTR
OL
BOA
RD
X02-
1
Blac
k
2526
X05-2
X05-1
DI2
+
DI2
-
13
4
5 2ST
O-B
Dra
in
Dra
in
Dra
in
Dra
in
Dra
in
HMI
POW
ER
SEC
18
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUALW
irin
g S
ch
em
ati
cs
co
nt.
DU
AL S
CREW
WCH
VE 2
75/2
25/1
7597
P920
-03 /
B 7
/08/19
NO
TES:
1. B
ACne
t ADD
RESIN
G CA
N B
E M
ANAG
ED TH
ROUG
H TH
E UNI
T M
OUN
TED
HM
I (US
ER
INTE
RFAC
E)
GRO
UND
Lege
nd
SCRE
W
CONN
ECTO
R
JUNC
TION
POI
NT
3-W
AY O
R BU
TTER
FLY
VALV
E
PSB
POW
ER S
UPPL
Y BO
ARD
ABC
SW
2 A
cces
sory
Rel
ayD
ESCR
IPTI
ON
SW2-
4SW
2-5
Not
Use
dO
NO
NCy
cle
wit
h Co
mpr
esso
rO
FFO
FFW
ater
Val
ve S
low
Ope
ning
ON
OFF
Not
Use
dO
FFO
N
SW1-
4SW
1-5
DES
CRIP
TIO
N
ON
ON
Not
Use
d
OFF
ON
Cycl
es w
ith
CC (N
orm
al)
ON
OFF
Not
Use
d
OFF
OFF
Not
Use
d
AXB
Acc
esso
ry 2
DIP
Set
ting
s
SW1
Mod
bus A
dd.
IDFu
ture
Use
1 2 3 4 5
ONOF
F
Futu
re U
seAc
c 2 –
Dip
1Ac
c 2 –
Dip
2
SW2On
Futu
re U
se
L Out
put T
ype
CC –
Dua
l/Sin
gle
Acc –
Dip
5Ac
c – D
ip 4
RV –
B/O
FP2
– 15
°F/3
0°F
FP1
– 15
°F/3
0°F
1 2 3 4 5 6 7 8
Off
PB2
21 3
Whi
te (3
04) W
hite
(308
)
Whi
te (3
12)
Whi
te (3
16)
Ora
nge
(307
)
Ora
nge
(303
)
Ora
nge
(311
) Ora
nge
(315
)
Blac
k (3
01)
Blac
k (3
01)
Blac
k (3
05)
Red
(314
)Bl
ack
(313
)
Red
(310
)
Blac
k (3
09)
Red
(302
)
Red
(306
)
Blac
k (3
05)
Blac
k (3
09)
Blac
k (3
13)
Red
(302
)
Red
(306
)
Red
(310
)
Red
(314
)
HR3
USB
PRISEC
RS-485-1
S - + S - +
RS-485-2
A1
A2
A3 A4 A5
A6
A7
A8C CC C
U1
U2
U3
U4
U5
U6
U7C CC C U8
U9
U12
U13
U14
U15C CC C
U16
U10
U11
D1
D4
D5
D6
D7C CC C
D8
D2
D3
D9 C
D1024VAC/DC
~ -~ +
SHL
D
LxH
LxL
A B C D
outputsinputs
inputsoutputs
D1 D2 D3 D4 D5
Whi
te (3
04)
Ora
nge
(307
)
Whi
te (3
08)
Ora
nge
(311
)
Whi
te (3
12)
Ora
nge
(315
)
Whi
te (3
16)
Ora
nge
(303
)
Blue
(95)
Gre
en (9
9)
D6 D7 D8 D9 D10
BAC
net C
onne
ctio
ns
NET
+
NET
-
COM
NOT
E 1
PB3
21 3
Yello
w (9
0)
Blue
(89)
To A
BC-A
P8
To A
BC-B
P8
Blac
kO
ran
geRe
d
Whi
te
Yello
w
Blue
HMI
POW
ER
Yello
w (9
6)
19
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Wir
ing
Sch
em
ati
cs
co
nt.
DU
AL S
CREW
WCH
VE 2
75/2
25/1
7597
P920
-03 /
B 7
/08/19
Blac
k (4
13)
Blac
k (4
12)
FIEL
D IN
STA
LLED
GR
OU
ND
FUSE
BO
X
GR
OU
ND
Tran
sfor
mer
1
115V
21
F1F2
NO
TE 3
Blac
k (4
05)
Blac
k (4
06)
PB1
460V
Blac
k (4
07)
Whi
te (4
08)
NO
TE 4
F3
NO
TE 2
F4
UN
IT P
OW
ER S
UPP
LYM
AIN
FU
SES
800A
GR
OU
ND
BLO
CK CHA
SSIS
G
RO
UN
D
LIN
E RE
ACT
OR
A
LIN
E RE
ACT
OR
B
L1L2
L3
L1L2
L3
L1
T1
L2
T2
L3
T3
FUSE
D
DIS
CON
NEC
T SW
ITCH
B
FUSE
D
DIS
CON
NEC
T SW
ITCH
A
L1
T1
L2
T2
L3
T3
F1N
OTE
3
T1T2
T3
COM
P A
CO
NTR
OL
BOA
RD
STO
+
STO
-
DI2
+
DI2
- + - GND
LN XO5
X02-
1
X02-
2
T1T2
T3ST
O +
STO
-
DI2
+
DI2
- + - GND
LN XO5
X02-
1
X02-
2
COM
P B
CON
TRO
L BO
ARD
REA
CTO
R G
RO
UN
D
Tran
sfor
mer
2
24 V
PB3
21
3
Tran
sfor
mer
3
24 V
NO
TE 1
460
V46
0 V
Purp
lePu
rple
Blac
kBl
ack
Blac
k/W
hite
Yello
wBl
ack/
Whi
teYe
llow
Blue
(320
)Ye
llow
(322
)
Blue
(319
)
Yello
w (3
21)
NO
TE 5
S1S2
S3
Blac
k (4
19)
Blac
k (4
20)
Blac
k (4
03)
Blac
k (4
04)
Blac
k (4
01)Blac
k (4
02)
F2
Cont
rol P
ower
Dis
conn
ect
Whi
te (4
16)
Whi
te (4
15)
Blac
k (4
09)
Blac
k (4
10)
FACT
ORY
LOW
VOL
TAGE
LIN
E
FACO
RY L
INE
VOLT
AGE
460V
GRO
UND
FUSE
SCRE
W
CONN
ECTO
R
FACO
RY L
INE
VOLT
AGE
115V
NO
TES:
1. C
lass 2
tran
sfor
mer
s 2.
Inst
alle
d fu
ses F
1 an
d F2
- 7A
3.
Inst
alle
d fu
se- F
3 an
d F4
– 4
A4.
Loca
ted
Insid
e Hi
gh V
olt B
ox5.
Loca
ted
Insid
e Lo
w V
olt B
oxTRAN
SFOR
MER
LINE
REA
CTOR
L1 T1
L2 T2
L3 T3
FUSE
D DI
SCO
NNEC
T
Lege
nd
20
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Evaporator Pressure Drop
Condenser Pressure Drop
21
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Electrical System and Controls - Safety Circuit
--------------- IInnnstantaneous Lock-Out
--------------- IInnnstantaneous Lock-Out
---------------- Lock-Out after 30 sec
Chiller Safety Circuit• Safe Torque Off (STO)
• “motor-off” function.
• Inverter (VFD) is powered anytime the chiller power is on.
• STO is wired to the compressor contactor (CC) output of the Aurora control.
• Anytime Aurora senses a fault that would require compressor shutdown, it will trigger the STO input to turn
the motor off.
• High Pressure Switch • NC below 320 psig
• Low Pressure Switch • NC above 4 psig
• Emergency Stop Switch (E-stop)• Wired to both ABC – emergency shutdown (ES) inputs.• LED on E-stop will illuminate when tripped.• HydroLink will display that ABC has been put into emergency shutdown mode.
ABC Compressor Controller
Relay
CompressorSTO
VFD Power
Compressor VFD
22
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Start-Up Data CollectionData Collection is to be schedule and implemented by a qualified representative.
Prior to Powering Up Machine
Suction Temperature Discharge Pressure
Super Heat Hx1 Gas Pressure
Subcooling Hx1 Sat
Capacity Hx2 Gas Pressure
Return Water from Geo Field Hx2 Sat
Hx2 Gas Temperature Supply Water to Building
Hx2 Liquid Temperature Hx1 Gas Temperature
Return water to Geo Field Hx1 Liquid Temperature
Return Water to Building
Notes
After Machine has been Running for 4 Minutes
Suction Temperature Discharge Pressure
Super Heat Hx1 Gas Pressure
Subcooling Hx1 Sat
Capacity Hx2 Gas Pressure
Return Water from Geo Field Hx2 Sat
Hx2 Gas Temperature Supply Water to Building
Hx2 Liquid Temperature Hx1 Gas Temperature
Return water to Geo Field Hx1 Liquid Temperature
Return Water to Building
Notes
After Machine has been Running for 60 Minutes
Suction Temperature Discharge Pressure
Super Heat Hx1 Gas Pressure
Subcooling Hx1 Sat
Capacity Hx2 Gas Pressure
Return Water from Geo Field Hx2 Sat
Hx2 Gas Temperature Supply Water to Building
Hx2 Liquid Temperature Hx1 Gas Temperature
Return water to Geo Field Hx1 Liquid Temperature
Return Water to Building
Notes
23
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Screw Refrigeration Cycle Analysis
24
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
HE
GPM x 500*
Legend
Abbreviations and Definitions
Reference CalculationsHeating Calculations: Cooling Calculations:
LWT = EWT + HR
GPM x 500*LWT = EWT -
NOTE: * When using water.
HWR = Hot Water ReturnHWS = Hot Water SupplyCWR = Cold Water ReturnCWS = Cold Water SupplyHVR = Heat Recovery ReturnHVS = Heat Recovery SupplyHVP = High Voltage PanelLVP = Low Voltage PanelTC = Total Cooling Capacity in MBTUHMBTUH = Thousands of British Thermal Units per hour
LWT = Leaving Water TemperatureEWT = Entering Water TemperatureEER = Energy Efficiency Ratio (TC/kW)COP = Coefficient of Performance (HC/kW x 3.413)PSI = Pressure drop in pounds per square inchHC = Heating Capacity in MBTUHHE = Heat of Extraction in MBTUHkW = kilowattft hd = pressure drop in feet of headHR = Heat of Rejection
Verify the following:• High voltage is correct and matches nameplate
• Fuses, breakers and wire size are correct
• Low voltage wiring is complete
• Piping is complete and the water system has been
cleaned and flushed
• Air is purged from piping system
• Isolation valves are open and water control valves are
wired
• Service/access panels are in place
• Transformer has been switched to lower voltage tap if
needed (208/230 volt units only)
• Unit controls are in “off” position
• Flow switches are installed and ready
WARNING: Verify ALL water controls are open and allow water flow PRIOR to engaging the compressor. Failure to do so can result in freezing the heat exchanger or water lines causing permanent damage to the unit.
Unit Startup
25
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Preventative Maintenance
Unit Heat Exchanger Maintenance1. Keep all air out of the water or antifreeze solution.2. Keep the system under pressure at all times. Closed
loop systems must have positive static pressure or air vents may draw air into the system.
NOTES: If the installation is in an area with a known highmineral content in the water, it is best to establish withthe owner a periodic maintenance schedule for checkingthe water-to-refrigerant heat exchanger on a regularbasis. Should periodic cleaning be necessary, use standard cleaning procedures. Generally, the more water flowing through the unit, the less chance there is for scaling. Low GPM flow rates produce higher temperatures through the heat exchanger. To avoid excessive pressure drop and the possibility of metal erosion, do not exceed GPM flow rate as shown on the specification sheets for each unit.
Quarterly Checks• Compressor oil levels• Test and check all manual safeties• Check strainers for debris• Check water flow rates and pressure drops across
evaporators and condensers• Verify graphical data and trending• Properly document all data
Annual Checks• Remove and clean all waterside strainers• Back washing of heat exchangers• Perform leak tests on all refrigerant circuits• Check all water flanged connections for wear or
leaks• Implement oil analysis if deemed necessary• Verify all electrical connections• Check and update all graphical interface items
along with main controller• Check and test all safeties both mechanical and
software• Verify sensor accuracy• Do a system check to get overall overview• Properly document all data
Replacement ProceduresWhen contacting the company for service or replacement parts, refer to the model number and serial number of the unit as stamped on the serial plate attached to the unit. If replacement parts are required, mention the date of installation of the unit and the date of failure, along with an explanation of the malfunctions and a description of the replacement parts required.
In-Warranty Material Return
Material may not be returned except by permissionof authorized warranty personnel. Contact your localdistributor for warranty return authorization and assistance.
26
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Check One Start up/Check-out for new installation Troubleshooting Problem:___________________________________
1. FLOW RATE IN GPM (SOURCE/LOAD SIDE HEAT EXCHANGER)
Water In Pressure: a.______ PSIWater Out Pressure: b.______ PSIPressure Drop = a - b c.______ PSIConvert Pressure Drop to Flow Rate (refer to Pressure Drop table) d.______ GPM
a.______ PSIb.______ PSIc.______ PSI d.______ GPM
2. TEMPERATURE RISE OR DROP ACROSS SOURCE SIDE HEAT EXCHANGER
COOLING HEATINGWater In Temperature: e.______ °F e.______ °FWater Out Temperature: f. ______ °F f. ______ °FTemperature Difference: g.______ °F g.______ °F
3. TEMPERATURE RISE OR DROP ACROSS LOAD SIDE HEAT EXCHANGER
COOLING HEATINGWater In Temperature: h.______ °F h.______ °FWater Out Temperature: i. ______ °F i. ______ °FTemperature Difference: j. ______ °F j. ______ °F
4. HEAT OF REJECTION (HR) / HEAT OF EXTRACTION (HE) CALCULATION
HR or HE = Flow Rate x Temperature Difference x Brine Factor* d. (above) x g. (above) x 485 for Methanol or Environol, 500 for water*Heat of Extraction (Heating Mode) = btu/hrHeat of Rejection (Cooling Mode) = btu/hrCompare results to Capacity Data Tables
Note: Steps 5 through 8 need only be completed if a problem is suspected
5. WATTSCOOLING HEATING HYDRONIC
Volts: m._____ VOLTS m.______ VOLTS m. ______ VOLTSTotal Amps (Comp. + Fan): n. _____ AMPS n. ______ AMPS n. ______ AMPSWatts = m. x n. x 0.85 o. _____ WATTS o. ______ WATTS o. ______ WATTS
6. CAPACITYCooling Capacity = HR. - (o. x 3.413) p. _____ btu/hrHeating Capacity= HE. + (o. x 3.413) p. _____ btu/hr
7. EFFICIENCYCooling EER = p. / o. q. _____ EERHeating COP = p. / (o. x 3.413) q. _____ COP
8. SUPERHEAT (S.H.) / SUBCOOLING (S.C.) COOLING HEATING HYDRONICSuction Pressure: r. ______ PSI r. ______ PSI r. ______ PSISuction Saturation Temperature: s. ______ °F s. ______ °F s. ______ °FSuction Line Temperature: t. ______ °F t. ______ °F t. ______ °FSuperheat = t. - s. u. _____ °F u. ______ °F u. ______ °F
Head Pressure: v. ______ PSI v. ______ PSI v. ______ PSIHigh Pressure Saturation Temp.: w. _____ °F w. _____ °F w. _____ °FLiquid Line Temperature*: x. ______ °F x. ______ °F x. ______ °FSubcooling = w. - x. y. ______ °F y. ______ °F y. ______ °F
* Note: Liquid line is between the source heat exchanger and the expansion valve in the cooling mode; between the load heat exchanger and the expansion valve in the heating mode.
Company Name: _________________________________Technician Name: ________________________________Model No: ______________________________________Owner’s Name: __________________________________Installation Address: ______________________________
Company Phone No: ______________________________Date: __________________________________________Serial No:_______________________________________Open or Closed Loop: _____________________________Installation Date: _________________________________
COOLING
WC Commercial Screw Chiller Troubleshooting Form
27
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Chiller Start-up Report
PRELIMINARY CHECKSINSPECTION ITEM RESULT INITIALS
INSPECT UNIT FOR SHIPPING OR INSTALLATION DAMAGE OK | NG
VERIFY UNIT IS LEVEL OK | NGINSPECT WATER PIPING FOR PROPER INSTALLATION,
AND THAT PIPING IS INSULATED ADEQUATELY OK | NGINSPECT INSIDE OF UNIT FOR POSSIBLE REFRIGERANT,
OIL, OR WATER LEAKS OK | NGVERIFY MOISTURE INDICATOR (IF PRESENT) IS GREEN
(INDICATING NO MOISTURE IN SYSTEM) OK | NG
VERIFY ALL REFRIGERANT VALVES ARE OPEN OK | NGVERIFY ELECTRICAL PANELS ARE FREE OF FOREIGN MATERIALS AND ALL WIRING IS TIGHT AND SECURE OK | NG
L1-L2 VOLTAGE (V)
L1-L3 VOLTAGE (V)
L2-L3 VOLTAGE (V)
L1 TO GROUND VOLTAGE (V)VERIFY COMPRESSOR ROTATION BY BUMPING
COMPRESSOR AND VERIFYING NO ALARM WITHIN 5 SEC. OK | NGVERIFY ETHERNET CABLE W/INTERNET CONNECTION
HAS BEEN RUN TO UNIT (IF APPLICABLE) OK | NGVERIFY MS/TP COMMUNICATION WIRES HAVE BEEN
RUN FROM BAS TO UNIT (IF APPLICABLE) OK | NGVERIFY MS/TS COMMUNICATION WIRES HAVE BEEN
RUN BETWEEN UNITS (IF APPLICABLE) OK | NG
EVAPORATOR FLOW RATE (GPM)
CONDENSER FLOW RATE (GPM)
EVAPORATOR (LOAD) FLOW RATE
CONDENSER (SOURCE) FLOW RATE
28
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Chiller Start-up Report cont.
PRELIMINARY CHECKS CONT.INSPECTION ITEM RESULT INITIALS
SOURCE FLOW RATE (GPM)
EVAPORATOR PRESSURE DROP (PSI)
CONDENSER PRESSURE DROP (PSI)
SOURCE PRESSURE DROP (PSI)EVAPORATOR (LOAD) SIDE ANTIFREEZE
CONCENTRATION % / TYPE
CONDENSER (LOAD) SIDE ANTIFREEZE CONCENTRATION % / TYPE
SOURCE (LOAD) SIDE ANTIFREEZE CONCENTRATION % / TYPE
APPROVAL OF ANTIFREEZE CONCENTRATION TO ADJUST FREEZE PROTECTION AND SET POINT SETTINGS
ADJUST LOW SAT SETTINGS BASED ON TABLE BELOW (˚F)
GEO FLOW RATE
GEO PRESSURE DROP
CONDENSER (SOURCE) SIDE ANTIFREEZE CONCENTRATION
GEO SIDE ANTIFREEZE CONCENTRATION
EVAPORATOR (LOAD) PRESSURE DROP
CONDENSER (SOURCE) PRESSURE DROP
29
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Chiller Start-up Report cont.
CONTROLS CHECKSINSPECTION ITEM RESULT INITIALS
POWER ON INTERFACE AND ENSURE ALL PAGES AND DATA IS READING NORMALLY OK | NG
VERIFY USER MANAGEMENT IS SETUP PROPERLY (ENHANCED CONTROLS ONLY) OK | NG
VERIFY WATER TEMPERATURES CLOSELY MATCH REFRIGERANT SAT. TEMPERATURES OK | NG
VERIFY COMPRESSOR AND UNIT SETTINGS ARE CORRECT (SEE SHEET BELOW) OK | NG
COMPUTER STATIC IP ADDRESS (IF APPLICABLE) (FACTORY: 10.1.20.50)
VERIFY BAS IS COMMUNICATING WITH UNIT PROPERLY OK | NGVERIFY REMOTE ACCESS WORKS PROPERLY
(IF APPLICABLE) OK | NG
Notes:
COMPUTER STATIC IP ADDRESS (IF APPLICABLE) (FACTORY: 10.1.7.49)
VERIFY DDC IS COMMUNICATING WITH UNIT PROPERLY
30
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Chiller Start-up Report cont.
RUN CHECKSINSPECTION ITEM RESULT INITIALS
VERIFY COMPRESSOR OIL LEVEL OK | NG
MODE (˚F)
ENTERING HOT WATER TEMP (˚F)
LEAVING HOT WATER TEMP (˚F)
ENTERING COLD WATER TEMP (˚F)
LEAVING COLD WATER TEMP (˚F)
COMPRESSOR 1 CAPACITY (%)
COMPRESSOR AMPERAGE (A)
COMPRESSOR 2 CAPACITY (%)
COMPRESSOR AMPERAGE (A)
COMPRESSOR 3 CAPACITY (%)
COMPRESSOR AMPERAGE (A)
COMPRESSOR 4 CAPACITY (%)
COMPRESSOR AMPERAGE (A)
SUBCOOLING ON ALL CIRCUITS BETWEEN 4˚F-15˚F OK | NG
SUPERHEAT ON ALL CIRCUITS BETWEEN 7˚F-19˚F OK | NG
SUCTION SAT
SUCTION SAT
DISCHARGE SAT
DISCHARGE SAT
(˚F)
(˚F)
(˚F)
(˚F)
COMPRESSOR 2 CAPACITY
31
WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL
Pages: Description: Date: By:
All Document Creation July 2019 MA
Revision Guide
©2019 WaterFurnace International, Inc., 9000 Conservation Way, Fort Wayne, IN 46809-9794. WaterFurnace has a policy of continual product research and development and
reserves the right to change design and specifi cations without notice.
Product: WC Series VS Dual Screw Chiller
Type: Water Cooled Chiller - 60 Hz
Size: 175-300 Tons
Document: Installation ManualIM1903WW 07/19
*IM1903WW*
Manufactured by
WaterFurnace International, Inc.
9000 Conservation Way
Fort Wayne, IN 46809
www.waterfurnace.com