12
ELECTRICAL SCHEMATICS
Models 2500-3000, 230V/400V/460V
53
47
DRN2 PWR
DRN1 PWR
DRN2 TEST
51
7
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
DRN1 - DEMAND DRAIN SOLENOID
DRN2 - DEMAND DRAIN SOLENOID (OIL COALESCING OPTION)
TC1 - TEMPERATURE SENSOR, THERMISTOR
F1 - RFI FILTER
1FTO - FAN1 THERMAL OVERLOAD
2FTO - FAN2 THERMAL OVERLOAD
3FTO - FAN3 THERMAL OVERLOAD
4FTO - FAN4 THERMAL OVERLOAD
230
0V
208
400
460
TR1
575V
1FU
LINE
VOLTAGE
1FU
1
3
3
2
1
L3
L2
L1
FUSE SIZES TR1:
2FU 24V-6A 5mm X 20mm GLASS
1FU 230V-1A CLASS CCR
400V-.6A CLASS CCR
460/575V-.6A CLASS CCR
X1 (0V)
2FU
F1
SUP
HEATER AUX
2
CON1
CON2
CON3
3
1
2
3
2
1
2
3
1
3
2
W1
MTR5
V1
MTR4
MTR3
T9
W1
T7
T8
V1
U1
U1
W1
MTR2
T6
W1
T5
T4
V1
U1
U1
V1
MTR1
T2
T3
T1
HTR
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.
FA N1
NOTE 1, 2
FA N3
(2000 ONLY )
FA N2
NOTE 1, 2
FA N4
(2000 ONLY )
AIR-COOLED ONLY
MATCH TRANSFORMER SUPPLY
TAP TO LINE VOLTAGE
(24V)
BRN
X (24VAC)
TB2-X
54
48
OIL COALESCING
OPTION
DRAIN
FA N2
NOTE 1, 2
FA N1
NOTE 1, 2
COMPRESSOR
RFI FILTER
TB2-N
N (24VAC)
BLU
BLU
BRN
(LINE)
(LOAD)
1
2
W1
W3
W2
W22
W23
W26
W27
DRN1 TEST
58
52
57
3
8
4
TB2-7
TB2-8
2FPS
TB2-F2
TB2-F1
1FPS
TB2-4
E
G
F
H
33
35
33
35
1FTO
2FTO
4FTO
3FTO
43
45
43
45
44
46
CON2
CON3
42
CON1
41
34
35
15 59
TB2
TC
TC
15
16
16
61
17
17
A
18
18
C
49
20
20
55
21
21
19
9
9
10
10
11
11
12
13
14
12
13
14
26
26
27
27
28
28
W4
W5
W8
W9
W10
W11
W13
W14
W15
W16
W17
W18
W19
W20
W21
W31
W32
W33
J2
J4
J5
FILTER MONITOR COALESCING (RJ-11)
FILTER MONITOR (RJ-11)
WEB MONITOR (RS232 PORT)
REMOTE STOP/START
LOCAL/REMOTE
(ALARM A OUTPUT, N.O.)
(ALARM A OUTPUT, N.C.)
(ALARM A OUTPUT, COM.)
(ALARM B OUTPUT, N.O.)
(ALARM B OUTPUT, N.C.)
(ALARM B OUTPUT, COM.)
CUSTOMER AUXILARY CONNECTION
CONTACT RATINGS: 5 AMP 250VAC
ALARM A FAULT STOPS COMPRESSOR
ALARM B FAULT INDICATION ONLY
(CUSTOMER OPTIONS)
60
62
B
D
50
56
63
19
COMP ON AUX
/COMPRESSOR WINDING THERMOSTAT
HEATER OFF AUX
HPCO
LPCO
DRN1 ALARM
DRN2 ALARM
(OPTIONAL)
SEE NOTE 4
TC1
10 K
Ω
COMPRESSOR
SEE NOTE 3
CONNECTION
DISC.
230/3/60
400/3/50
460/3/60
FUSIBLE DISCONNECT SWITCH & FUSES
SUPPLIED BY END USER AND SIZED PER NEC
PDB (TB1)
INSTRUMENT
PA NE L
POWER
INSTRUMENT PANEL SIGNAL
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