A.O. Smith SGE Installation And Operation Manual page 105

is
17.4.1 Solar system electrical diagram
legend
Solar heating system control components
AA Controller
BB Extra head pump for solar heating
system (ON/OFF)
CC Solar heating system pump
(modulating)
DD Temperature sensor (S1 - solar
collector)
EE Temperature sensor (S2 - tank)
FF Combined Q/T sensor (incl.
temperature sensor S4 - solar
collector return)
GG Controller (BUS-link)
F2 Fuse
Instruction manual SGE
Terminal block for solar heating system controller
1
2 L1 Power
3 N
4 - n.a.
5 - n.a.
6 - n.a.
7
8 L1 Solar heating system pump
(ON/OFF)
9 N
10
Solar heating system pump
11 L2
(modulating)
12 N
13 M
14 - n.a.
15 - n.a.
16 - n.a.
17 - n.a.
18 - n.a.
19 - n.a.
20 - n.a.
J3 1 n.a.
2 n.a.
3 n.a.
4 n.a.
J12 1 Power 5V
2 Solar collector return sensor (S4)
3 Earth
4 Flow signal
J13 1 n.a.
2 Solar collector sensor (S1)
3 n.a.
4 Solar collector sensor (S1)
J14 1 n.a.
2 Tank sensor (S2)
3 n.a.
4 Tank sensor (S2)
J15 1 n.a.
2 n.a.
3 n.a.
J16 1
BUS-link
2
J17 1 n.a.
2 n.a.
105