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4 Assembly and connection
EN
Fig. 6:
Electrical wiring plan no. 2
Legend
A1
Power PCB
A2
Display terminal
B1
Temperature sensor, internal temperature
B2
Icing hazard temperature sensor
B3
Condenser temperature sensor
B4
Ambient temperature sensor
B5
Condensate warning sensor (optional)
F2
Pressostat
F3.1
Thermistor
F3.2
Compressor overload protection
F4.1
Condenser fan 1 thermocontact
F4.2
Condenser fan 2 thermocontact
F5.1
Evaporator fan 1 thermocontact
F5.2
Evaporator fan 2 thermocontact
F5.3
Evaporator fan 3 thermocontact
F5.4
Evaporator fan 4 thermocontact
K1
Relay collective fault 1
K2
Relay collective fault 2
L1
LED operational green
L2
LED alarm red
M1
Compressor
M2.1
Condenser fan 1
M2.2
Condenser fan 2
M4.1
Evaporator fan 1
M4.2
Evaporator fan 2
M4.3
Evaporator fan 3
M4.4
Evaporator fan 4
S1
Door limit switch
(without door limit switch: terminal 1, 2 open)
X1
Terminal strip
X2
Master-slave connection
X3
Optional interface
X10
AC connections
X20
DC connections
30
Mains
21
S1
22
X1
L1 L2 L3
PE
1 2 3 4 5
PE
3
2
1
1 2 2 4 1 3
Power
K2
K1
5
D1 – 2
PE
D0 – A
A1
M1
M2
D1 – 3 D1 – 1 D1 – 4
4 3 2 1
4 3 2 1
1 2 3
1 3 5
95
F3.2
2 4 6
96
Evaporator coil
X10
L1
L2L3
PE
L1L2 L3
X20
1 2 3 4 5 6 7 8 9 10
X20
1 2 3 4 5 6 7 8 9 10
Condenser
X10
L1L2L3
PE
L1L2 L3
PE
PE
4
U
V
W
F3.1
M1
X2 X3
3
8
2
MS1
Serial
B5
Level GRE
2
B1
NTC_I RED
2
NTC_E BLUE
B2
Term
M4 D1 – 5
1 2
4
1 2 3
1 2
3
2
2
4
U V W PE
U V W PE
M
F5.1
PE
M
3~
F5.2
3~
M4.1
M4.2
A2
2
2
4
B4
B3
U V WPE
U V W PE
F2
M2.2
M
F4.1
F4.2
3~
M2.1
A2
Note:
For technical data, refer to the rating plate.
AC
cos f = 1
I max. = 2 A
U max. = 250 V
Tab. 2: Contact data
RITTAL Compact split cooling unit assembly and operating instructions
4
DC
L/R = 20 ms
I min. = 100 mA
U max. = 200 V
U min. = 18 V
I max. = 2 A
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