13
ELECTRICAL SCHEMATICS
Models 2500-3000, 575V
L1
L3
L2
3
1FU
LINE
VOLTAGE
575V
460
230
400
TR1
1
2
3
1
1FU
FUSE SIZES TR1:
2FU 24V-6A 5mm X 20mm GLASS
1FU 230V-1A CLASS CCR
400V-.6A CLASS CCR
460/575V-.6A CLASS CCR
0V
208
LEGEND
CON1 - COMPRESSOR CONTACTOR
CON2 - FAN CONTACTOR, MTR2 (FAN)
CON3 - FAN CONTACTOR, MTR3 (FAN)
TR1 - TRANSFORMER CONTROL 100VA
MTR1 - COMPRESSOR
MTR2 - FAN MOTOR
MTR3 - FAN MOTOR
MTR4 - FAN MOTOR
MTR5 - FAN MOTOR
1FPS - FAN PRESSURE SWITCH FAN 1 (230/300 PSI)
2FPS - FAN PRESSURE SWITCH FAN 2 (255/320 PSI)
LPCO - LOW PRESSURE CUTOUT SWITCH (47/64 PSI)
HPCO - HIGH PRESSURE CUTOUT SWITCH (350/450 PSI)
TB1 - TERMINAL BLOCK, POWER DISTRIBUTION
TB2 - TERMINAL BLOCK, CONTROL
HTR - CRANKCASE HEATER
1FU - PRIMARY FUSE
2FU - SECONDARY FUSE
3FU - FAN FUSE
DRN1 - DEMAND DRAIN SOLENOID
DRN2 - DEMAND DRAIN SOLENOID (OIL COALESCING OPTION)
TC1 - TEMPERATURE SENSOR, THERMISTOR
TR2 - TRANSFORMER .75 KVA 1 PHASE
TR3 - TRANSFORMER .75 KVA 1 PHASE
F1 - RFI FILTER
1FTO - FAN1 THERMAL OVERLOAD
2FTO - FAN2 THERMAL OVERLOAD
3FTO - FAN3 THERMAL OVERLOAD
4FTO - FAN4 THERMAL OVERLOAD
(0V)
2FU
HTR
HEATER AUX
MTR1
3
3
2
1
H4
H3
H2
H1
X1
X2
X3
X4
W1
U1
MTR5
V1
MTR3
W1
V1
U1
W1
MTR4
V1
MTR2
W1
U1
U1
V1
H4
H3
H2
H1
X1
X2
X3
X4
3FU
CON2
CON3
1
T4
T5
2
3
T6
T7
T8
T9
1
2
3
CON1
2
2
T1
1
2
T2
T3
3
SUP
F1
TC1
COMP ON AUX
/COMPRESSOR WINDING THERMOSTAT
HEATER OFF AUX
HPCO
LPCO
DRN1 ALARM
DRN2 ALARM
(OPTIONAL)
SEE NOTE 4
56
19
50
D
B
62
60
63
10 K
Ω
59
61
A
C
49
55
28
27
26
12
13
14
9
10
11
20
21
19
16
17
18
34
35
15
TB2
TC
TC
15
16
17
18
20
21
9
10
11
12
13
14
26
27
28
FILTER MONITOR COALESCING (RJ-11)
FILTER MONITOR (RJ-11)
WEB MONITOR (RS232 PORT)
LOCAL/REMOTE
REMOTE STOP/START
(CUSTOMER OPTIONS)
CUSTOMER AUXILARY CONNECTION
CONTACT RATINGS: 5 AMP 250VAC
(ALARM B OUTPUT, N.O.)
(ALARM B OUTPUT, N.C.)
(ALARM B OUTPUT, COM.)
(ALARM A OUTPUT, N.O.)
(ALARM A OUTPUT, N.C.)
(ALARM A OUTPUT, COM.)
ALARM A FAULT STOPS COMPRESSOR
ALARM B FAULT INDICATION ONLY
W4
W5
W8
W9
W10
W11
W13
W14
W15
W16
W17
W18
W19
W20
W21
W31
W32
W33
J2
J4
J5
NOTES:
1. WATER-COOLED UNITS: FAN MOTOR(S), FAN CONTACTORS,
FAN PRESSURE SWITCH(ES), AND FAN THERMAL OVERLOADS
ARE REMOVED.
2. SEE FAN NAMEPLATE FOR SPECIFIC WIRING INFORMATION.
3. SCROLL COMPRESSORS REQUIRE PROPER PHASING.
SEE COMPRESSOR DATA PLATE FOR CORRECT WIRING SEQUENCE.
4. WIRES 55 AND 56 ARE JUMPERED TOGETHER ON STANDARD DRAIN
PKG.
COMPRESSOR
SEE NOTE 3
TR3
575V-460V AUTO TRANSFORMER PACK
6.5 TOTAL KVA
7.8 FLA @ 480V
6.3 FLA @ 600V
FUSING REQUIRED:
2500-3000-6 AMP 600V CLASS CCR
AIR-COOLED OPTION
FA N1
NOTE 1, 2
FAN3
FA N2
NOTE 1, 2
FA N4
MATCH TRANSFORMER SUPPLY
TAP TO LINE VOLTAGE
(24V)
X (24VAC)
TB2-X
BRN
BRN
BLU
BLU
(LINE)
(LOAD)
N (24VAC)
1
2
W1 W2
W3
W22 W23
W26
W27
3
TB2-4
7
TB2-7
51
57
8
52
58
DRN1 TEST
DRN2 TEST
47
53
47
53
DRN1 PWR
DRN2 PWR
TB2-8
E
G
F
H
TB2-F1
TB2-F2
1FPS
2FPS
33
35
33
35
41
1FTO
3FTO
2FTO
4FTO
43
45
43
45
44
46
CON2
CON3
CON1
42
OIL COALESCING
OPTION
DRAIN
FA N2
NOTE 1, 2
FA N1
NOTE 1, 2
COMPRESSOR
RFI FILTER
TB2-N
TR2
FUSIBLE DISCONNECT SWITCH & FUSES
SUPPLIED BY END USER AND SIZED PER NEC
DISC.
575/3/60
PDB (TB1)
CONNECTION
INSTRUMENT PANEL SIGNAL
INSTRUMENT
PANEL
POWER
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