2. INSTALLING CONTROLLER
ML2420
20A
20A
5 mm
2
5 mm
2
ML2440
40A
20A
5 mm
2
10 mm
2
Model
Rated charging
current
Rated discharging
current
Battery wire
diameter (mm2)
Load wire
diameter (mm2)
≥
150mm
≥
150mm
Hot air
Cold air
Fig. 2.1 Installation and heat dissipation
Ÿ
Take care when installing lead acid batteries,
always wear correct safety equipment.
Ÿ
Keep terminals protected from foreign metal objects to ensure terminals don’t short.
Ÿ
Make sure battery is sufficiently ventilated
.
Ÿ
Keep battery away from open flames.
Ÿ
Make sure battery is protected from direct sunlight and rain/water intrusion.
Ÿ
Loose connections or corrosion to the terminals can cause excessive heat which may
melt wiring.
Ÿ
Always use insulated tools and keep hands dry when carrying out installation.
Ÿ
Always follow the safety advice given by the battery manufacturer.
Ÿ
Connect the controllers earth terminal to ground.
Wiring installation must comply with with national and local electrical specifications.
The wiring specifications of the battery and loads must be selected correctly to the size of
the maximum output current.
See table below for correct wiring specifications:
Risk of explosion! Never install the
controller and battery together in
a sealed environment where
battery gas may accumulate.
Solar panels connected in series
can produce a high voltage.
Always disconnect battery whilst
connecting any wiring to
controller.
When installing controller, make
sure it is in a well ventilated area
(see fig 2.1)
!
2.1 Wiring Specifications
2.2 Installation and Wiring
