
SRB
22
Picture 14. Electrical wiring diagram EK 18 Smart EU, EK 21 Smart EU, EK 24 Smart EU
LEGEND:
Q1
Circuit breaker
G1, G2, G3 Relays 20A
K1
Voltage release
H1, H2, H3 Heaters
X1
Terminal Blocks
EK Smart EU
EK 06 Smart EU: H1=3x2kW
EK 09 Smart EU: H1=H2=3X1,5kW
EK 12 Smart EU: H1=H2=3X2kW
EK 15 Smart EU: H1=H2=3X2,667kW
EK 18 Smart EU: H1=H2=H3=3X2kW
EK 21 Smart EU: H1=H2=H3=3X2.333kW
EK 24 Smart EU: H1=H2=H3=3X2.667kW
EK 27 Smart EU: H1=H2=H3=3X3kW
X1-1 Terminal Blocks-blue
X1-2 Terminal Blocks-ground
X1-3 Fuse terminal block 2A
K2
STB thermostat
P1
Pump
P5
Room thermostat connection point
R1
Water temperature sensor KTY 81-210