Morningstar SunSaverDuo Manuel D'installation Et D'utilisation page 10

Confirm that the solar modules are wired for 12V nominal output before
connecting them to the SunSaver Duo. In full sun, the output voltage of
the solar modules should be 18 – 25 Volts before connection to the
SunSaver Duo.
Upon connection of the Solar positive wire, the SunSaver Duo should
begin the start-up sequence, flashing the Status LED 3 times.
Step 5: Remote Temperature Sensor (optional)
An optional Remote Temperature Sensor (purchased separately) mea-
sures the temperature directly at the battery for more accurate battery
charging. Remove the wire jumper from the RTS terminals before install-
ing the sensor. The RTS includes full installation instructions.
Step 6: Insert Fuses
Insert a 30 A dc-rated fuse into the fuse holder in each of the battery
positive wires. If the solar module(s) is in full sun, charging should begin.
BOAT INSTALLATION
A wire jumper is installed across the Remote Temperature
Sensor (RTS) terminals at the factory. The jumper can
prevent false RTS detection due to condensation on the
SunSaver Duo. Do not remove this jumper unless an
optional RTS is to be installed.
WARNING: Only ground the DC system to battery negative
(one-point ground). Never ground the DC system to the boat
bonding system or to any metallic part, fixture, or component
on the boat.
NOTE: An existing common ground wire may connect the
negative battery terminals of two or more on-board batteries.
This cable will not interfere with the SunSaver Duo operation.
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