54 Appendix 1 Circuit Diagram
Liebert CRV+ Series Air Conditioner User Manual
2 4 6
1 5
Compressor
breaker
QF1
3～
2 4
1 33
BK BK
Humidifier
breaker
QF5
Factory supplied line voltage wiring
Factory supplied 24 volt wiring
Device own line
Notes：
QF1-2
QF1-4
QF1-6
QF5-2
QF5-4
Humidifier
pot
～
BK BK
Ethernet or CAN wiring
Inline quick disconnect
Wire color code:
BK-Black P-Purple
R-Red/
WH-White
BL-Blue
BR-Brown
Compressor 1
Y/GN-Yellow green
YE-Yellow
Terminal block connector
Naked crimping connector
J21
1
2
3
4
5
6
BK
BR
BK
BR
BK
BR
7
8
BK
BR
J19
1
2
3
4
5
6
BK
BR
BK
BR
BK
BR
7
8
BK
BR
1 2 3 4 5 6 7 8
J13
1
2
BK
BK
Transformer TC
TC-6
TC-5
BK
BK
4
TC-1
3
2
J18
1
2
3
BK
BK
4
5
J31
1
2
BK
BK
1 2 3 4 5 6 7 8
J30
J31
8
7
6
5
4
3
BL
GR
BR
2
1
BK
～
PE
Fan2
FAN2-PE
～
PE
Fan1
L1
FAN1-PE
1
2
J15-1
J15-2
BK
BR
R S T
CN604
U V W
0V
24V
CN602
12V
GND
A
B
1
2
BK
BR
Humidifier board
TAM
BK BK
G
G0
ON
GND
DR
EV2
G
EV1
LS
LS
CS
CS
AL
AL
+VR
SET
GND
AB
AB
2 4
1 3
BK BK
Transformer
breaker
QF4
QF4-2
QF4-4
Relay2
Relay1
24V
0V
J28
1
2
3
4
5
6
7
8
9
10
0
1
J21-1
J21-2
J21-3
J21-4
J21-5
J21-6
J21-7
J21-8
J19-1
J19-2
J19-3
J19-4
J19-5
J19-6
J19-7
J19-8
NC
COM
0~10V
GND
J15
J18-T01
J31-1
J12-12V
J12-GND
J31-2
J13-1
J13-2
J18-T0-VAC
J12
ACM02U2
ACM02A2
J01
J01-7
J01-5
J01-3
J01-1
GND
12V
A1
B1
G10
10V
Terminal block
2 4 6
1 5
Fan
breaker
QF2
3
QF2-2
QF2-4
QF2-6
1
BK
J02-1
L2
L3
L1
L2
L3
A1
A2
2
1
4
3
6
5
22
21
KM1-1
KM1-5
KM1-21
KM1-2
KM1-6
KM1-22
KM1-A2
KM1-3KM1-4
KM1-A1
Compressor
contactor
KM1
x 2
CN607
DC N-O
CN617 CN614
DC N-I
DC P-IDC P-O
CN615
CN613
A` B` C`
A B C
EMITemp.and Humi.
sensor
High pressure sensor
A1
B1
J34
J23
1
2
3
J23-1
R
J23-2
BR
J23-3
BK
J8
1
2
J8-1
J8-2
BK
BK
J39
1
2
J39-B
J39-A
BK
BR
J25
1
2
J25-1
J25-2
BK
BK
3
4
Condensate
pump
J1
NO
Clogged filter alarm
COM
NC
24
51
TB2-51
TB2-24
Humidifier alarm
38
37
Remote swith
TB2-37
TB2-38
1 2
WS-2
Water line switch
WS-1
J28-1
J28-2
N
12V
GND
GNDGND 12V12V B1 B1A1A100 12
NN
1
J03
J03-1
Y/G
J02
BK
BR
Optional
Optional
76
75
Common alarm
TB2-75
TB2-76
BK
BR
J28-3
J28-4
Optional
G
G0
ON
GND
DR
EV2
G
EV1
AL
AL
+VR
SET
LS
LS
CS
CS
Compressor transducer
Remote sensor2Remote sensor1
Remote sensor9 Remote sensor10
1 2
Water under floor switch
Optional
2 4 6
1 5
Heat
breaker
QF3
3
QF3-2
QF3-4
A1
A2
2
1
4
3
6
5
22
21
KM2-1KM2-2
KM2-A2
KM2-3KM2-4
KM2-A1
Heat
contactor
KM2
N
EH-L2
EH-L3
EH-N2
EH-N3
N
ST1-C ST1-NC
Heat alarm
Connection bars
N
EH-L1EH-N1
EH-L4EH-N4
ST2-C ST2-NC ST3-C ST3-NC ST4-C ST4-NC
Optional
High water alarm
J1-1 J1-2
BKJ18-T02
BKJ18-T03
A1 B1
A1 B1
12V GND
4DI
High pressure alarm
24VDC
power module
G1010V
Connection bars
J25-3
J25-4
BK
BK
A1
B1
12
00
TB1
TB3
GND12V N N N N94 95
63
24V
TB1-24V
TB2-63
Freon solenoid valve
Y1
XPE
XPE
64
Y1
Optional
0V
TB2-64
TB1-0V
BK
BK
J28-5
J28-6
J1
2
1
4
3
ACM02D1
J4
J4-GND
J4-12V
J4-A
J4-B
TB1-GND
TB1-12V
TB1-A1
TB1-B1
TB1-0V
TB1-24V TB1-24V
TB1-0V
TB1-12V
TB1-GND
TB1-12V
TB1-GND
TB1-B1
TB1-A1
TB1-10V
TB1-G10
TB1-G10
TB1-10V
A2
B2
12V
GND
RDU-SIC1
J14
1
2
J14-B
BK
BR
12
GND
A
B
RDU-SIC2
12
GND
A
B
TB2
J14-A
TB2-B2
TB2-A2
12V
TB1-12V
GND
TB1-GND
TB2-GND
TB2-12V
BK BR
62
61
J20
1
2
J20-CANH
J20-CANL
BK
BR
TB2-61
TB2-62
TB1-24V
TB1-0V
GR-Grey
J34
KM1-154
KM1-162
KM1-153
KM1-161
BK
BL
70
71
TB2-70
TB2-71
TB2
N
153 161
162154
BK
BK
BK
BK
BK
BK
BK
BR
GR
BK
24V24V0V0V 0V 24V
BK BKBK
BL BL
BR
BR
BK
1
2
1GND
2GND
4DI1-1GND
4DI1-1
4DI1-2GND
4DI1-2
N 51 24 37 38 70 71 75 76
A2 B2 12VGND
TB2 TB3
61 62 63 64
380V～415V/50Hz 3N～
L2
BK
BK
3
4
L1
1
2
BK
NL3
6
5
Main switch
QS
N
QS-5
QS-3
QS-1
PE
BL
Y/G
PEN
A` B` C ` N`
A B C N
EMI
G`
G
EMI-A
EMI-B
EMI-C
EMI-N
EMI-G
EMI-G`EMI-N`
EMI-C`
EMI-B`
EMI-A`
1 2
24V
0V
EEV controller
3 4
1 2
2 3
4
1
1
2
3
4
5
1 2 3 4
A1
B1
KM4 KM5
KM9
KM1 KM6
Low pressure
sensor
KM4-1
KM4-4
KM5-2
KM5-3
KM1-1
KM1-2
KM6-1
KM6-2
KM6-3
TB1-24V
TB1-0V
TB1-A1
TB1-B1
BK BR BR BK
BK BK
BK BR R
LP-GND
LP-VIN
LP-5V
EEV
HP-5V
HP-VIN
HP -GND
Ground point of
electrical control box
Exhaust air probe
RT3
Delivery air probe1
RT1
Delivery air probe 2
RT2
94
95
TB1-94
TB1-95
BK
12VDC
power module
12 00
TB1-12
TB1-00
L N
CN1
V0+ V0-CN2
CN1-L
CN1-N
BKBK
BR
BR
BR
BR
BL
High Pressure Switch
BK
FAN1-L1
FAN1-L2
FAN1-L3
FAN2-L1
FAN2-L2
FAN2-L3
FAN1-0~10V
FAN1-GND
FAN1-NC
FAN1-COM
NC
COM
0~10V
GND
FAN2-0~10V
FAN2-GND
FAN2-NC
FAN2-COM
RT4
Suction air probe
HPS
HPS
BK
QF4 -1
QF4-3
QF5-1
QF5-3
TB1-N
BL
BL
BL
Capacitor
Reactor
Ground
point
Ground point of
electrical control box
Ground point of
electrical control box
Ground point of
electrical control box
Drain manually
Normal humidification
Drain solenoid valve
Water in solenoid valve
Water level probe
Electrical conductivity probe
Grounding of
front door
Grounding
of cabinet
Grounding of
back door
Grounding
of cabinet
Grounding of
electrical control box
Grounding
of cabinet
Figure 2 CR035 circuit diagram
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