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PolyScience DA500 User Manual
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Wiring Diagram – 5 HP and 7.5 HP Air-Cooled Chillers
279
48
WIR
IN
G D
IA
GR
A
M -
5 &
7.
5 HP
CHILL
ER
S
AI
R
-
COOL
ED
BLU
YEL
YEL
BLK
BLK
BLU
NO
120VAC
NC
COM
WHT
BLK
BLK
BLK
BLK
WHT
CRANKCASE
HEAT
ER
GB
GRN/Y
EL
BLK
WHT
FAN CY
CLING
PRESSURE SW
ITCH
FAN
PHASE
MONIT
OR
G
225-130
SHUN
T
REAR
PANEL
WHT
BLK
WHT
BLK
RED
BLK
BLK
17
12
15
23
10
3
9
7
21
6
8
20
24
16
18
19
13
1
4
11
22
2
14
5
21
1
2
1
2
1
2
1
2
2
1
21
21
2
1
1
21
21
21
21
21
2
1
32
1
32
1
32
3
41
2
3
41
2
3
41
2
3
41
2
TB 3
FUSE
BLOCK
C
A
B
D
C
A
B
D
YEL
9
8
7
6
5
4
3
2
1
GROUND
BAR
TB 2
TB 2
TB 1
TB 1
ST
ATUS AL
ARM CON
T
ACTS
HO
T GAS B
YPASS V
ALVE
A2
A1
A2
A1
COMPRESS
O
R
PUMP
GRN/YEL
BLK
WHT
BLK
WHT
FLUID
PRESSUR
E SENSO
R
FLOW
METER
REMOT
E CUT
OFF S
WIT
CH
BLK
BLK
YEL
YEL
BLU
BLU
WHT
BLU
RED
WHT
WHT
BLK
BLU
RED
GRN
WHT
WHT
GRN
RED
WHT
BLK
RED
BLK
GRN
BLK
GRN
RED
RED
WHT
BLK
GRN
BLK
GRN
RED
WHT
BLK
BRN
BLK
POW
ER
SUPPLY
GB
NC
NO
NC
NO
NO
NC
CO
MP
RESSOR
PUMP
FUSE
BLOCK
CONTACT
OR
OVERL
OAD
RELAY
CONTA
CTOR
FUSE
BLOCK
FAN
NC
FUSE
BLOCK
OVERL
OAD
RELAY
NC
NO
A1
CONTACT
OR
NO
A2
DIS
TRIBUT
ION
BLOCK
FRONT PAN
EL
DI
SCONNECT
SWITC
H
L3
L2
L1
D
C
B
A
WHT
BLK
YEL
GRN
RED
200-284
PCB U4 PIN 1
PCB XF
MR 1 PIN 10
PCB U4 PI
N
4
215-513
3
1
1
2
5
200-280
BEAD
GB
EMI
FILTER
FAN
8
7
6
4
5
2
1
3
FAN(S) O
VERLOA
D RELAY (N
C)
PUM
P OVER
LOAD R
ELAY (NC
)
GB
DCMP
DHRN
PRK
DPMP
DFAN
PWR
FAN
HTR
OT
P
CMP
PMP
STA
12
3
45
6
8
79
1
2
1
2
3
12
3
D232
RTD 100
TEM
P. SEN
SOR
1
2
3
4
HEF
HIT
FPS
DHPS
DLPS
R
C
V
R
C
S
F
L
W
D
A
F
2
D
A
P
1
D
A
P
2
D
A
F
1
T3
T2
T1
/ITS
5
3
4
2
1
CONT 5
RS-232
6
3
7
42
1
5
8
9
FLUID
PRESS
U
RE
SENSO
R
FLOW
MET
ER
BLK
GRN
RED
HOT
GAS
BYPASS
VALVE
REFRIGERANT H
IGH
PRESSURE SW
ITCH
REFRI
G
ERANT L
OW
PRESSURE SW
ITCH
13
3
16
2
21
6
9
7
20
19
15
11
22
17
1
18
12
10
8
4
23
24
14
5
GB
GB
GB
L1 L2 L3
JUNC
TION BO
X
(REA
R O
F UNIT)
GROU
ND
SUPPLY V
OLTAGE
OUTPUT
OUTPUT
GROUND
SUPPLY V
OLTAGE
COM
NO
NC
NC
COM
NO
1
2
FAN
BLK
WHT
BLU
BRN
FLOW
SWITC
H
RC
FILTER
RC
FILTER
RC
FILTER
525-814
PULLU
P
RESISTORS
RJ-45
1.4A
1.4A
3.5A
MULT
I -
TAP
TRA
NSFO
RMER
120
VAC O
UTP
UT
GB
FUSE
BLOCK
BLK
WHT
110-
48
50
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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