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4 System Wiring
4.1 12 V Battery System
12V system Voltage from panels will read 22-25 V when
disconnected (open circuit). Connect the pump controller
directly to battery bank.
Remote Tank Float Switch Connect float switch to ter-
minals 4-5 of the pump controller when it breaks contact
on rise, to turn the pump OFF. Otherwise use terminals 3-4
for opposite function.
Grounding Connect either battery minus or solar minus to
ground, never connect both to ground!
Solar Tracking Use stranded wire for flexibility. Secure
the wires to tracker with plenty of tape. Leave a good slack
loop to allow free motion of tracker.
4.2 24 V Battery System
24 V system Wiring scheme shows serial wiring for a sys-
tem of 24 V nominal. Voltage from panels should read 45 V
when disconnected (open-circuit).
Remote Tank Float Switch Connect float switch to ter-
minals 4-5 of the pump controller when it breaks contact
on rise, to turn the pump OFF. Otherwise use terminals 3-4
for opposite function.
Grounding Connect either battery minus or solar minus to
ground, never connect both to ground!
Solar Tracking Use stranded wire for flexibility. Secure
the wires to tracker with plenty of tape. Leave a good slack
loop to allow free motion of tracker.
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
Errors excepted and possible alterations without prior notice.
fuse
30 A
1 battery 12 V
fuse
30 A
2 batteries 12 V
in series
external
charge controller
external
charge controller
low water sensor
1 PV module 12 V
low water sensor
2 PV modules 12 V
in series
Sun. Water.
Life.
5
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