EN / SCM20 & SCM40 PWM User’s Manual
9
3 INSTALLATION
During installation commissioning and maintenance of the
Solar ChargeMaster, the Important Safety Instructions are
applicable at all times.
3.1 UNPACKING
The delivery includes the following items:
Solar
Chargemaster;
This User’s manual
Important Safety Instructions
After unpacking, check the contents for possible damage.
Do not use the product if it is damaged. If in doubt, contact
your supplier.
3.2 ENVIRONMENT
Obey the following stipulations during installation:
The Solar Chargemaster is designed for indoor use
only.
Ambient operating temperature: -20°C ... 50°C / -4°F …
122°F (power de-rating above 40°C / 104°F to
decrease the internal temperature).
Humidity: 5-95%, non-condensing.
The Solar ChargeMaster must be mounted to a vertical,
solid and heat-resistant surface, with the connecting
cables downwards.
Do not expose the Solar Chargemaster to excessive
dust, aggressive environments, ammonia or salt.
Make sure that the hot air that is developed during
operation can be discharged. The Solar Chargemaster
must be mounted in such a way that obstruction of the
airflow along the heatsink on the backside of the casing
will be prevented.
No objects must be located within a distance of 20 cm /
8 inch around the Solar Chargemaster.
Do not locate the Solar Chargemaster in the same
compartment as the batteries.
Do not install the Solar Chargemaster straight above
the batteries because of possible corrosive sulphur
fumes.
Although the Solar Chargemaster fully complies with all
applicable EMC limits, it may still cause harmful
interference to radio communication equipment. If such
interference appears, it is recommended to increase the
separation between the Solar Chargemaster and the
equipment, to relocate the receiving antenna or to
connect the equipment to a circuit different from that to
which the Solar Chargemaster is connected.
3.3
WIRING AND FUSES
WARNING
The wire and fuse sizes stated in this manual
are given as example only. Prescribed wire and
fuse sizes may be different due to local
applicable regulations and standards.
Keep in mind that high current will pass through the DC
wiring. Keep the cable length as short as possible, this will
keep the system efficiency as high as possible. The
recommended minimum cross sections of the wiring are:
Model
Minimum DC Cable cross section
<2m / 6ft length
2 - 4m / 6 - 12ft
SCM20 PWM
6mm² / 8AWG
10mm² / 6AWG
SCM40 PWM
10mm² / 6AWG
16mm² / 4AWG
Use boot lace ferrules on the wire ends. These ferrules
must be crimped with a proper crimping tool.
Use the following wire colours for DC wiring:
Wire colour
Meaning
Connect to:
Red Positive
+
(POS)
Black
Negative
– (NEG)
Lay the positive and negative cables next to each other to
limit the electromagnetic field around the cables. The
negative battery cable should be connected directly to the
negative post of the battery bank or the ground side of a
current shunt. Do not use the chassis frame as the
negative conductor. Tighten securely. The positive battery
cable must be fused and connected to the positive post of
the battery bank.
The recommended DC fuses are:
Model
Battery fuse
Load fuse
SCM20 PWM
20A
20A
SCM40 PWM
40A
40A
See section 5.3 for ordering information