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.
18
SCHEMATIC WIRING DIAGRAM
POWER SUPPLY : 460-3-60 (Four compressor units)
APPLICABLE ON MODELS: CNXM20 - CNXM60
TO HVTB/BUSBAR
L2
L1
L3
COMP3
COMP4
FAN2
CONTROL PANEL
FAN1
FAN4
FAN6
FAN3
FAN5
CONDENSER FAN MOTOR POWER & CONTROL CONNECTIONS - 6 FANS / CNXM20
FAN LAYOUT
COMP1
COMP2
TO HVTB/BUSBAR
L3
L2
L1
ATB
52
ATB
1
ATB
2
20
ATB
MOTOR STARTER CONTROL
SWITCHING CONTACT
AHU MOTOR ON/OFF
AHU MOTOR FAULT
(REMOVE JP7)
(N.C CONTACT)
R2-1
R2 (230Vac)
AHU CONTROL INTER-CONNECTIONS
17
1
(REMOVE JP6)
ATB
67
ATB
LVTB
G
ATB
CONTROL PANEL
CONDENSING UNIT
(AHU MOTOR CONTROL)
BMR-1A
BMR (24Vac)
AIR HANDLING UNIT
CONTROL PANEL
(OPTIONAL)
FMC1
FMC3
CB17
FMC4
FMC5
FMC2
FM6
T.K.
2
FMC1
FMC3
12E
14 NO
FMC5
13E
T.K.
13 NO
12A
10 NO
FM1
13A
T.K.
12C
9 NO
TO MB
FM3
13C
T.K.
14 NO
12F
12F
13 NO
10 NO
12B
TO AB
9 NO
12D
FM3
FM1
36
C
35
C
36A
37A
35A
37
C
10
4C
10
3C
10
4A
10
5A
10
3A
10
5C
FM5
37E
35E
36E
FM2
37
B
36
B
35
B
10
3E
10
4E
10
5E
10
5B
10
4B
10
3B
2
13F
FMC6
T.K.
FM2
FMC2
13B
FMC4
T.K.
13D
FM4
36
F
FM6
FM4
37
D
36
D
35
D
35
F
37
F
10
4F
10
5D
10
4D
10
3D
10
3F
10
5F
TO HVTB/BUSBAR
L2
L1
L3
COMPRESSOR POWER & CONTROL CONNECTION
HVTB / BUSBAR
POWER SUPPLY
(NOTE 4)
L3
L1
L2
ON (PSIG)
CLOSE (PSIG)
300 ± 15
3B
MB
2
1O
3C
2
AB
COMP
1
T2
A
T1
A
T3
A
COMP
2
COMP
3
T3
B
T1
B
T2
B
T1
C
T3
C
T2
C
4O
CC3
3D
2
AB
CC4
2
COMP
4
T3
D
T2
D
T1
D
FM3,4
FM1,2,5,6
175
125
225
175
OFF (PSIG)
FAN MOTOR #
HPS1 ~4
350 ± 10
LOW PRESSURE
HIGH PRESSURE
30 ± 5
10 ± 5
--
300
OPEN (PSIG)
PRESSURE SETTINGS
DESC.
TL1 - OPEN
JU13 - CLOSED (1,2)
JU15 - CLOSED (1,2)
JU12 - CLOSED (1,2)
JU11 - CLOSED (1,2)
JU5 - CLOSED (1,2)
JU6 - CLOSED (1,2)
JU3 - CLOSED (1,2)
JU4 - CLOSED (1,2)
DIP SWITCH SETTINGS - AB BOARD
JUMPER SETTINGS (COMMON)
S1
OFF
ON
2
1
OFF
OFF
3
4
OFF
OFF
OFF
ON
TD1 - OPEN
TU1 - OPEN
JUMPER SETTINGS - MB BOARD
JU1 - OPEN
JU2 - OPEN
DIP SWITCH SETTINGS - MB1 BOARD
TL1 - OPEN
TD1 - OPEN
S1
1
2
JU2 - CLOSED
4
3
JUMPER SETTINGS - MB BOARD
TU1 - OPEN
JU1 - CLOSED
FMC6
CB19
CB18
OLR2
CC2
CC1
OLR1
OLR3
CC3
CC4
OLR4
TU2 - CLOSED
TL2 - OPEN
TD2 - CLOSED
JU9 - CLOSED (1,2)
JU10 - CLOSED (1,2)
JU8 - CLOSED (1,2)
CC1
1O
3A
MB
CC2
4O
JU19 - CLOSED (1,2)
JU7 - CLOSED (1,2)