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Wiring diagram for 12-27 kW sauna stove with load distribution to control unit and power control unit
Wiring diagram for sauna heaters to 36 kW without load distribution
L3 L2 L1
S2 S1 U V W
N N N
Sauna control unit
sensor
limiter
Sauna heater up to 27 kW
4 3 2 1
N U1 V1 W1
max. 9 kW
max. 18 kW
N U2 V2 W2
4 3 2 1
Power control unit LSG 18 90 7372 00
safety contactor
N N
safety contactor
5 x 1,5²
2 x 1,5²
5 x 2,5²
5 x 6²
junction box
Mains switch
3 x 16 A
12-16 kW: 4²
18-21 kW: 6²
24-27 kW: 10²
L1 L2 L3 N
L3 L2 L1
Sauna-Steuergerät
S1 U V W
N
sensor
limiter
Limiter
T
emperature sensor
Sensor housing
3 x 1,5²
3 x 1,5²
30 kW: 10 mm²
36 kW: 10 mm²
Mains switch
Control contactor B
Safety contactor
Control contactor A
Power control unit to 36 kW 90 8771 00
L1 L2 L3 N N N S1 A B
N U1 V1 W1
4 3 2 1
4 3 2 1
Sauna heater
max. 18 kW
N U2 V2 W2
max. 18 kW
Outlet:
Safety contactor
