TYPICAL SCHEMATIC WIRING DIAGRAM
(Single compressor units)
NOTE:
1. Refer to next page for legend, notes & wiring diagram for optional items.
2. Refer to unit control box (inside panel) for exact wiring diagram.
14
N
L1
[UVM]
31A
COOLING
450 ± 10
290 ± 10
50 ± 5
360 ± 15
PRESSURE SWITCH SETTINGS
NAME
OPEN (PSIG)
CLOSE (PSIG)
L1
(NEUTRAL WIRE)
LUG
SWITCH OR CB
DISCONNECT
TO FUSED
(NOTE 4)
L3
NTB
L2
HVTB
L3
L2
L1
36
A
FM
BMC
OLR
CC
35
A
(AT RIGHT)
POWER CONNECTION
SEE APPLICABLE FM
37
A
FMC
(AS APPLICABLE)
CONDENSER FAN MOTOR CONNECTION - (SINGLE FAN MOTOR)
TO HVTB
TO HVTB
WITH FCS
TO HVTB
TO HVTB
WITHOUT FCS
12
36
A
12B
ATB
1
TK[FM1]
CR1-2
12
ATB
FMC
TK[FM2]
13B
1
2
ATB
CR1-2
37
A
FM1
35
A
36
A
FM2
36
B
37
B
35
B
35
A
L1 L2
FMC
L3
L1
FMC2
13B
FCS
TK[FM2]
12A
TK[FM1]
12B
2
ATB
FMC1
WITH FCS
ATB CR1-2
12 FCS
1
12
ATB CR1-2
1
WITHOUT FCS
FMC
12B
12A
TK[FM]
2
ATB
12B
ATB
TK[FM]
2
FMC
CLOSE -- 3 min.
OPEN -- 5 min.
PRESET TO 0 SEC. (STD. UNIT) / 30 SEC. (PD UNIT)
FACTORY SETTING OF J1 & J2
PRESET TO 3 MIN.
J2
J1
TIMER SETTING ON SM
60 sec.
[ J1 ] -- COMP. PUMP DOWN DELAY TIME
10 sec.
30 sec.
0 sec.
[ J2 ] -- COMP. ANTI-RECYCLE TIMER
90 sec.
FCS
190 ± 15
LPS
HPS
25 ± 5
PUMP DOWN SOLENOID
RELAY
ATB
18
OLR-1
BMC
19
230V
24V
CB
16
CONTACTOR
BLW MTR
17
1B
PDSR1-1
CR1-1
P
YR1-1
LPS1
JP2
ATB
1
1A
JP1
(ABOVE RIGHT)
1
TO ATB
2
TO ATB
SEE APPLICABLE FM CONTROL CONNECTION
4A
PDS
PUMP DOWN
SOLENOID
ATB
28
27
JP7
JP6
26
JP5
25
JP4
24
23
P
2A
SR1-1
3A
CR1
CC
HPS1
(SSPS)
(AI)
F1
(OPS)
(DTS)
SR1
SAFETIES
CONTACTOR
COMPRESSOR
RELAY
2
HEATING STG2
W1
30
W1
HEATING STG1
W1
29
W1
Y1
Y1
28
HC2
NO
NC
C
HC1
AFS
SM
HEATER 1&2
CONTACTORS
TRANS
G
G
BM
C
C
24V
R
R
THERMOSTAT CONTROLLER
LVTB
15
ATB
YR1
SR1-2
39A
40A
TO FR (SEE OPTIONAL VFC INDICATION CONNECTION)
41A
15
TO ATB
PDSR1
38A
COOLING
RELAY
70
68
T3
A
T1
A
T2
A
69
CONTROL CONNECTION
TO NTB
TO HVTB
COMP
FM2
FM1
37
B
36
B
37
A
35
B
FMC1
FMC2
L2 L3
L2
L1
L3
CONDENSER FAN MOTOR CONNECTION - (DUAL FAN MOTOR)
(AS APPLICABLE)
[NOTE:5]
(SEE NOTE -7)
REFER TO UNIT
NAMEPLATE FOR
POWER SUPPLY
