21
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.
SCHEMATIC WIRING DIAGRAM
POWER SUPPLY : 460-3-60 (Four compressor units)
APPLICABLE ON MODELS: CNX2M00 - CNX2M40
POWER SUPPLY
T.K.
10 NO
12C
9 NO
12A
TO MB
FM1
T.K.
FM3
36
A
35
A
FM1
37
A
36C
35C
37C
FM3
FMC3
13C
2
13A
FMC1
104A
103A
105
A
L3
L1 L2
13E
T.K.
FM5
FMC5
1
COMP
T3
A
T1
A
T2
A
T2
C
T1
C
T3
C
COMP
T2
B
T1
B
T3
B
2
T3
D
T2
D
T1
D
HVTB / BUSBAR
L2
L3
L1
COMPRESSOR POWER & CONTROL CONNECTION IN PART WINDING STARTING (PWS)
1O
3A
CC1
MB
2
CC3
CC1A-2A
61A
(NOTE 4)
OLR1-1A
10A
9A
OLR3-1A
11A
10B
MB
4O
3B
OLR2-1A
9B
11B
OLR4-1A
CC2A-2A
CC4
61B
2
CC2
OLR5-1A
OLR7-1A
11C
9C
CC5A-2A
3C
2
61C
CC5
CC7
3
COMP
T2
E
T3
E
T1
G
T2
G
T3
G
OLR8-1A
10D
11D
OLR6-1A
9D
T2
H
CC8
CC6
3D
4O
AB
61D
CC6A-2A
4
T1
F
T1
H
T2
F
T3
F
COMP
2
T3
H
10C
AB
1O
T1
E
FM5
104E
36E
103E
35E
105
E
37E
FM7
36G
35G
37G
L3
L1 L2
T.K.
FM7
13G
FMC7
103C
104C
105
C
103G
104G
105
G
104H
36H
FM8
FMC4
12D
T.K.
14 NO
T.K.
FM8
13H
FMC8
13D
FM2
13 NO
TO MB
FMC2
T.K.
FM6
T.K.
12B
13B
FMC6
FM4
13F
FM4
2
FM2
FM6
104B
103
B
36
B
35
B
103
H
10
5F
104F
103F
105D
104D
103
D
105B
37
B
36D
35D
37D
35H
37F
35F
36F
105H
37H
L2
L1
L3
L2
L1
L3
TO HVTB/BUSBAR
TO HVTB/BUSBAR
TO HVTB/BUSBAR
TO HVTB/BUSBAR
104O
36O
FM15
FMC11
12K
T.K.
10 NO
FM15
T.K.
13O
FMC15
13K
FM9
9 NO
TO AB
FMC9
T.K.
FM13
T.K.
12I
13I
FMC13
FM11
13M
FM11
2
FM9
FM13
104I
103I
36I
35I
103O
105
M
104M
103M
105K
104K
103
K
10
5I
37I
36K
35K
37K
35O
37M
35M
36M
FMC12
12L
T.K.
FM16
T.K.
14 NO
13P
13L
FMC16
FM14
T.K.
13 NO
12J
FM10
AB
FM14
FMC10
T.K.
13N
13J
FM12
FMC14
FM16
2
FM10
FM12
105N
104N
103N
105J
104J
103J
105
O
36J
35J
37O
37N
36N
35N
37J
105P
104P
103P
105L
104L
103L
36P
35P
37L
36L
35L
37P
TO HVTB/BUSBAR
L2
L1
L3
TO HVTB/BUSBAR
L2
L1
L3
TO HVTB/BUSBAR
L2
L1
L3
TO HVTB/BUSBAR
L3
L1 L2
12E
12G
12A
12C
12B
12D
12F
12H
12K
12O
12I
12M
12L
12P
12J
12N
CONDENSER FAN MOTOR POWER & CONTROL CONNECTIONS - 16 FANS / CNX2M40
JU6 - CLOSED (1,2)
JU11 - CLOSED (1,2)
JU10 - CLOSED (1,2)
JU9 - CLOSED (1,2)
JU8 - CLOSED (1,2)
JU7 - CLOSED (1,2)
TD2 - CLOSED
TD1 - OPEN
TL2 - OPEN
TL1 - OPEN
TU2 - CLOSED
TU1 - OPEN
JU5 - CLOSED (1,2)
JU4 - CLOSED (1,2)
JU3 - CLOSED (1,2)
JU2 - CLOSED
JU1 - CLOSED
JUMPER SETTINGS - MB BOARD
DESC.
HPS1 & 2
HIGH PRESSURE
LOW PRESSURE
300
--
JU12 - CLOSED (1,2)
JU19 - CLOSED (1,2)
JU15 - CLOSED (1,2)
JU13 - CLOSED (1,2)
350 ± 10
300 ± 15
PRESSURE SETTINGS
OPEN (PSIG)
CLOSE (PSIG)
17
(AHU MOTOR CONTROL)
ATB
20
2
ATB
67
ATB
1
ATB
AHU MOTOR ON/OFF
SWITCHING CONTACT
MOTOR STARTER CONTROL
R2-1
R2 (230Vac)
BMR-1A
(OPTIONAL)
AHU CONTROL INTER-CONNECTIONS
CONDENSING UNIT
CONTROL PANEL
ATB
LVTB
G
CONTROL PANEL
AIR HANDLING UNIT
BMR (24Vac)
(REMOVE JP6)
CONTROL PANEL
FAN14
FAN12
FAN16
FAN8
FAN6
FAN2
FAN4
FAN10
COMP2
COMP4
FAN9
FAN1
FAN5
FAN3
FAN7
FAN11
FAN13
FAN15
FAN LAYOUT
COMP1
COMP3
10 ± 5
30 ± 5
ON (PSIG)
OFF (PSIG)
FAN MOTOR #
FM1,5,2,6,9,13,10,14
175
225
125
175
FM3,7,4,8,11,15,12,16
JUMPER SETTINGS (COMMON)
DIP SWITCH SETTINGS - MB BOARD
S1
2
1
ON
OFF
3
4
OFF
OFF
OFF
OFF
ON
OFF
S1
DIP SWITCH SETTINGS - AB BOARD
JUMPER SETTINGS - AB BOARD
JU1 - OPEN
JU2 - OPEN
TU1 - OPEN
TD1 - OPEN
TL1 - OPEN
1
2
4
3
ATB
52
ATB
1
(N.C CONTACT)
(REMOVE JP7)
AHU MOTOR FAULT
FMC7
FMC1
FMC5
FMC3
CB17
CB18
FMC6
FMC2
FMC4
FMC8
CB19
CB20
CB23
FMC10
FMC11
FMC13
FMC9
FMC15
CB22
CB21
FMC16
FMC12
FMC14
CB24
CC4
OLR4
CC2
CC3
CC1
OLR1
OLR3
OLR2
CC5
CC7
OLR5
OLR7
CC6
CC8
OLR8
OLR6