Appendix 1 Circuit Diagram 53
Liebert CRV+ Series Air Conditioner User Manual
Appendix 1 Circuit Diagram
380V～415V/50Hz 3N～
L2
BK
BK
3
4
L1
1
2
BK
NL3
6
5
2 4 6
1 5
Compressor
breaker
QF1
Main switch
QS
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
N
QS-5
QS-3
QS-1
PE
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
J34J1
Temp.and Humi.
sensor
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
BK
7
8
BK
BR
NO
Clogged filter alarm
COM
NC
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
TC-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
1
2
J15-1
J15-2
BK
BR
R S T
CN 602
U V W
0V
24V
24
51
TB2- 51
TB2- 24
1 2
High water alarm
1
2
BK
BR
1 2
24V
0V
J12
1
2
A1
B1
12V
GND
2
1
4
3
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
QF3
QF3-2
QF3-4
Relay2
Relay1
24V
0V
J28
1
2
3
4
5
6
7
8
9
10
Drain manually0
Normal humidification1
Drain solenoid valve
Water in solenoid valve
Water level pr obe
Electrical conductivity probe
J21-1
J21-2
J21-3
J21-4
J21-5
J21-6
J21-7
J21-8
J19-3
J19-4
J19-5
J19-6
J19-7
J19-8
J15
J18-T01
J31-1
J12-12V
J12- GND
J31-2
J13-1
J13-2
J18-T0-VAC
J12
J12-V12
J12-GND
BK
BR
Control board
ACM02U2
ACM02A2
ACM02D1
Compressor
transducer
J01
J01-7
J01-5
J01-3
J01-1
EEV controller
1
BK
J02-1
Humidifier alarm
Water under floor switch
38
37
Remote swith
TB2- 37
TB2- 38
1 2
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
3 4
1 2 2 3 41
CN603 CN603
CN602
A` B` C`
A B C
FAN4-L
FAN4-N
Fan4
FAN3-L
FAN3-N
Fan3
FAN2-L
FAN2-N
Fan2
FAN1-L
FAN1-N
Fan1
R
BL
G10
10V
EMI
24VDC
power module
Condensate
pump
J4
2
1
QF4-2
1
2
3
4
5
1 2 3 4
A1
B1
WS-2
Water line switch
WS-1
NN
N
J28-1
J28-2
J02
1
J03
J03-1Y/G
KM4 KM5
KM9
KM1 KM6
BK
BR
Low pressure
sensor
BK
BR
J28-3
J28-4
76
75
Common alarm
TB2-75
TB2-76
Fan breaker
QF4
Optional
Optional
AL
AL
+VR
SET
EV2
EV1
G
DR
GND
ON
LS
LS
CS
CS
G0
G
KM4-1
KM4-4
KM5-2
KM5-3
KM1-1
KM1-2
KM6-1
KM6-2
KM6-3
Optional
Optional
BK
J18-T02
Remote sensor 2
Remote sensor 1
Remote sensor 9 Remote sensor10
2 4 6
1 5
Heat
breaker
QF2
3
QF2-2
QF2-4
A1
A2
2
1
4
3
6
5
22
21
KM2-1
KM2-2
KM2-A2
KM2-3KM2-4
KM2-A1
Heat
contactor
KM2
N N
ST1-C ST1-NC
Heat alarm
XPE
EH1-L
EH2-L
EH1 -N
EH2 -N
N
A1 B112V GND
J1-1 J1-2
ST2-C ST2-NC
Optional
94 95
EEV
153
KM1-153KM1-154
KM1-161
KM1-162
4DI
High pressure alarm
70
71
L1 L2
CN603
DC1
-
DC1
+
N
P DC+
DC-
DC+
DC-
Connection bars
N
A1
B1
12
00
Terminal block
GNDGND 12V12V B1 B124V24V0V A1A100 12 N N N NA1 B1G1010V 51 24 37 38 70 71 75 76
A2 B2 12VGND
94 95
TB1 TB2 TB3
GND12V
High pressure sensor
Exhaust air probe
RT3
Delivery air probe 1
RT1
A2
B2
12V
GND
RDU-SIC1
J23
1
2
3
J23-1
R
J23-2
BR
J23-3
BK
J8
1
2
J8-1
J8-2
BK
BK
J25
1
2
J25-1
J25-2
BK
BK
3
4
J14
1
2
J14-BBK
BR
12
GND
A
B
Delivery air probe2
RT2
J25-3
J25-4
BK
BK
RDU-SIC2
12
GND
A
B
62
61
J20
1
2
J20-CANH
J20-CANL
BK
BR
BKJ18-T03
N
YE
WH
BK
BR
J19-1
J19-2
TB3
61 62 63 64
TB2
63
24V
TB1-24V
TB2-63
Freon solenoid valve
Y1
XPE
XPE
BK
BK
J28-5
J28-6
64
Y1
Optional
0V
TB1-10 V
TB1-G10
TB1-
TB1-
TB2-61
TB2-62
J14-A
TB2-B2
TB2-A2
J34J1
TB1-12V
TB1-GND
J4-GND
J4-12V
J4-A
J4-B
TB1-GND
TB1-12V
TB1-A1
TB1-B1
TB1-0V
TB1-24V
BK
BKTB1-0 V
TB1-24V
TB1-94
TB1-95
BK
RE2 RE1
RE2 RE1
TB1-24V
TB1-0V
TB1-A1
TB1-B1
BK BR BR BK
TB2-64
TB1-0V
TB1-24V
TB 1-0V
AB
TB1-10V
TB1-G10
TB1-A1
TB1-B1
0V 0V 24V
12V
TB1-12V
GND
TB1-GND
TB2-GND
TB2-12V
BK BR
BK
BK
BK BK BK BK
BK
BL BR
BL
BL
BL
BR
BK
BK
BK
BK
BK
TB2-70
TB2-71
BL
Y/G
GR-Grey
PEN
154
161
162
TB2
BK
BK
BK
BR
BK BK BK BR R
1
2 3
4
4DI-1
4DI-2
4DI-4
4DI -3
Grounding of
front door
Grounding
of cabinet
Grounding of
back door
Grounding
of cabinet
Grounding of
electrical control box
A` B` C ` N`
A B C N
EMI
G`
G
1GND
2GND 3G ND
4GND
L N
DC+ DC-
R48-1000 R48-1000
4
3
N
QF4-4
4DI-1GND
4DI-2GND
4DI-4GND
4DI-3GND
J65
J69 J70
J65
J69 J70
J65-L
J65-N
J69-D C+
J70-DC-
L N
DC+ DC-
J65-L
J65-N
J69-DC+
J70-DC-
12
VDC
power
module
12 00
TB1-12
TB1-00
EMI-A
EMI-B
EMI-C
EMI-N
EMI-G
EMI -A`
EMI -B`
EMI-C`
EMI -N`
EMI-G `
TB1-N
LP-GND
LP-VIN
LP-5V
HP-5V
HP-VIN
HP -GND
Ground point of
electrical control box
L NCN1
V0+V0 -CN2
CN1-L
CN1-N
High Pressure Switch
BR
BR
BL
BL
FAN1-10V
FAN1-TACH
FAN1-GND
YE
WH
FAN1-10V
FAN1-TACH
FAN1-GND
YE
WH
FAN1-10V
FAN1- TACH
FAN1 -GND
YE
WH
FAN1-10V
FAN1-TACH
FAN1-GND
R
BL
R
BL
R
BL
HPS
HPS
RT4
Suction air probe
QF3-1
QF3-3QF5-1
QF4-1
QF4 -3
TB1-N
BK
HPS
12V
GND
A1
B1
12V
GND
TB1-
TB1-
12V
GND
Ground
point
CN607
A
B
12V
GND
A
B
5V
GND
A
B
CN609
5V
GND
C
T
R
CN107 CN105
Capacitor
board
Reactor
Ground point of
electrical control box
Ground point of
electrical control box
Grounding
of cabinet
Figure 1 CR025 circuit diagram
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