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PolyScience DA500 User Manual
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Wiring Diagram – 10 HP Air-Cooled Chillers
WIR
ING D
IAG
RAM - 10 HP
CH
IL
L
ER
S
BLK
BLU
BLU
RC
FILTE
R
COM
NC
120VAC
NO
BLK
BLK
YEL
YEL
BLU
BLU
WHT
BL
K
GRN/YEL
GB
CRANKC
ASE
HEA
TER
FRO
NT
FAN
RJ-45
PULLU
P
RE
SI
STOR
S
525-8
1
4
FUSE
BLO
CK
GB
MU
LT
I
-
T
A
P
TR
ANSF
OR
M
ER
120VAC
OUTPUT
3.5A
1.4A
1.4A
A1
RC
FILTE
R
RC
FILTER
RC
FILTE
R
CON
TROL P
CB
500-328A-
A
PHAS
E
MON
I
T
O
R
FLOW
SWITC
H
BRN
BLU
WH
T
BLK
BLK
RE
AR FAN
PAN
EL
2
1
NO
CO
M
NC
NC
NO
COM
SUPPLY V
OLT
AGE
GROUND
OUTPUT
OUT
PUT
SUPPLY VO
LTAGE
GROUND
JUN
CTI
ON BOX
(RE
AR OF UNI
T)
L1
L2 L3
GND
GB
GB
GB
GB
5
14
24
23
4
8
10
12
18
1
17
22
11
15
19
20
7
9
6
21
2
16
3
13
FAN C
Y
C
LING
PRESSURE SWI
T
CH
REFRIGERANT
LOW
PRESSURE
SWITCH
REFRIGERANT
HIGH
PRESSURE
SWITC
H
HOT GA
S
B
YPASS
VALVE
RED
GRN
BL
K
FLOW
ME
T
ER
FLUID
PRE
SSURE
SEN
SO
R
98
51
2
4
7
3
6
RS
-232
CON
T 5
1
24
3
5
T1/ITS
T2
T3
D
A
F
1
D
A
P
2
D
A
P
1
D
A
F
2
F
L
W
R
C
S
R
C
V
DLPS
DH
PS
FPS
H
IT
H
EF
4321
RTD
10
0
TEMP.
SENSO
R
D232
3
2
1
32
1
21
9
78
6
5
4
3
2
1
STA
PMP
CMP
OTP
HTR
FAN
PWR
DFAN
DPMP
PRK
DH
RN
DC
MP
GB
PUM
P OVE
RLOA
D RE
LAY (N
C
)
FAN(S
) OVERLO
AD RE
LAY (NC
)
3
1
2
5
4
6
7
8
FAN
EM
I
FI
LTE
R
GB
200-280
BEA
D
5
2
1
1
3
21
5-513
PC
B U
4 PIN 4
P
CB XFM
R 1 P
IN
10
PC
B U
4 PIN 1
200-284
RED
GRN
YEL
BL
K
WH
T
A
B
C
D
L1
L2
L3
FRONT
PANE
L
DIS
C
ONNEC
T
SW
ITC
H
DIS
TR
I
B
UTI
O
N
BLOCK
A2
NO
CONTACTOR
CONTACTOR
NO
NC
OVERLOA
D
RE
LAY
OVERLOA
D
RE
LAY
FUS
E
BLOCK
FUS
E
BLOCK
NC
FRO
NT
FAN
RE
AR
FAN
NC
NC
NO
NO
FUS
E
BLOC
K
CONTACTOR
OVERLOAD
RE
LAY
CONTACTOR
FUS
E
BLOCK
PUMP
C
OMPRESSO
R
NC
NO
NO
NC
NO
NC
GB
POWER
SUPPLY
BL
K
BRN
BL
K
WH
T
RED
GRN
BL
K
GRN
BL
K
WH
T
RED
RED
GRN
BL
K
GRN
BL
K
RED
WH
T
BL
K
WH
T
RED
GRN
WH
T
WH
T
GRN
RED
BLK
BL
K
BL
U
BL
K
WHT
WHT
RED
BL
U
WHT
BLU
BLU
YEL
YEL
BLK
BLK
RE
MOTE
CUTOF
F SWI
TCH
FLOW M
ETE
R
FLUID PRESSURE SENSOR
WH
T
BL
K
WH
T
BL
K
GRN/YEL
PUM
P
COM
PRE
S
SOR
A2
A1
A1
A2
A1
A2
BLU
BLU
HOT G
AS BYPASS VAL
V
E
STAT
US ALARM C
ONTAC
TS
TB 1
TB 1
TB 2
TB 2
GROUND
BAR
1
2
3
4
5
6
7
8
9
YEL
D
B
AC
D
B
AC
FUS
E
BLOCK
TB
3
21
43
21
43
21
43
21
43
2
31
2
31
2
31
21
21
21
21
21
21
1
2
1
21
21
2
2
1
2
1
2
1
2
1
1
2
5
14
2
22
11
4
1
13
19
18
16
24
20
8
6
21
7
9
3
10
23
15
12
17
BL
K
BL
K
RED
BL
K
WH
T
BL
K
WH
T
BL
K
REAR
FRO
NT
FAN
110-279
49
49
51
Table of Contents
Default Chapter
2
Table of Contents
2
Introduction
5
General Safety Information
6
Safety Recommendations
7
Regulatory Compliance and Testing
8
Controls and Components
9
Fan Cycling Switch
10
Refrigerant Safety Relief Valve
11
Component Identification
12
HP Chillers - Rear
13
Installation and Startup
14
Electrical Power
15
Alarm Output
16
RS-232/RS-485 Serial Output
16
Signal Inputs/Outputs
16
External Piping
17
General Considerations
17
Process Fluid Connections
17
Facility Water Connections
17
Reservoir Drain
17
Reservoir Vent
17
Full Flow Bypass
18
Process Coolant
19
Suitable Fluids
19
Startup
20
Facility Water Flow (Water-Cooled Units Only)
20
Filling the Reservoir
20
Starting Process Fluid Flow
21
Normal Operation
22
Power on
22
Temperature Unit (°C or °F) Selection / Factory Default Reset
22
Adjusting the Set Point Temperature
23
Selecting the Pressure / Flow Rate Display and Units
23
Displaying Internal (P1) and External (P2) Probe Temperatures
23
Setting Operational Parameters / Limits
23
High Temperature Limit (HL)
26
Low Temperature Limit (LL)
26
High Ambient Temperature Limit (HA)
27
Maximum Fluid Pressure (FP)
27
Minimum Flow Rate (FL)
27
Lower Band (Lb)
28
Upper Band (Ub)
28
Remote Probe (Rp)
28
Calibration Offset (C1 / C2 / C3)
28
Compressor Delay (CD)
29
Flow Rate Calibration (Fc)
29
Coolant Density (Ds)
29
Specific Heat (Sh)
29
Current Control (CC)
29
Communications Baud Rate (PC)
30
Low Ambient Temperature Limit (LA)
30
Password (Pd)
30
HGB Valve Delay (Td)
30
Fuse Bits (Fb)
30
Enabling / Disabling the Local Lockout
31
Display, Alarm and Error Messages
32
Automatic Restart from Alarm Mode
34
Routine Maintenance
35
Recommended Routine Maintenance Schedule
35
Reservoir Coolant Level
35
Coolant Freeze Protection
35
Inline Strainer
35
Air Filters
36
Troubleshooting
37
Troubleshooting Chart
37
Compressor Overload Fault (Ft20)
38
Low Pressure Sensor
38
High Pressure Sensor
38
Technical Information
39
Chiller Specifications
39
Air-Cooled Chillers (DA500, DA750, DA1000)
39
Water-Cooled Chillers (DW500)
39
Electrical Specifications
40
DA500 Chillers
40
DW500 Chillers
41
DA750 Chillers
42
DA1000 Chillers
42
Pump Performance
43
RS-232 Serial Communications (RS-485 Option)
44
Equipment Disposal (WEEE Directive)
45
Service and Technical Support
45
Polyscience Chiller Fluids
46
Warranty
46
Appendix
47
Flow Schematic - Air-Cooled Chillers
47
Flow Schematic - Water-Cooled Chillers
48
Wiring Diagram - 5 HP and 7.5 HP Air-Cooled Chillers
49
Wiring Diagram - 10 HP Air-Cooled Chillers
50
Wiring Diagram - 5 HP Water-Cooled Chillers
51
4-20 Ma Set Point Control
52
4
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PolyScience DA500 Specifications
General
Brand
PolyScience
Model
DA500
Category
Chiller
Language
English
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