Specialty Concepts SC2 - Manual (Page 5)

INSTALLATION INSTRUCTIONS:
1. LOCATION: - A suitable location must be found for mounting the SC2. The unit should be
mounted on a vertical surface and be as close as possible to the batteries to avoid errors in
battery voltage reading. DO NOT block the ventilation holes on the top and bottom of the SC2.
On units with the temperature compensation option, the sensor wire is 10 feet long and should
reach the battery bank if possible. For installation details on temperature compensation, refer
to options section.
2. PROTECTION REQUIREMENTS: - The unit should not be placed in direct sunlight or close to
any heat generating source to avoid extreme temperature increases. It must receive adequate
protection from rain, dust and bugs. The SC2 is NOT designed to be mounted outdoors or in
high humidity environments unless protected by a suitable enclosure.
3. MOUNT THE SC2: - Secure the SC2 to the selected location using the four mounting holes on
the chassis and proper fasteners.
4. COMPLETE THE INSTALLATION OF THE PANELS, BATTERIES AND LOAD: - Follow the
manufacturer's instructions for mounting and wiring the solar panel, batteries and the load.
5. SELECT WIRE:
WIRE TYPE: - It is recommended that stranded wire rather than solid wire be used
whenever possible, because stranded wire does not fatigue and cause loose
connections over time as easily as solid wire does.
WIRE SIZE: - The SC2 terminal block accepts bare wire up to 10 AWG, with a terminal
adapters included for up to 6 AWG. Wire should be sized of sufficient gauge to safely
handle the rated current of the system and to limit voltage drop. Consult wire sizing
tables and local alternative energy system suppliers for information on wire sizing.
6. REMOVE POWER FROM BATTERY / PANELS: - Disconnect power from the batteries and
panels prior to running the wires to the SC2 to prevent accidental damage or bodily harm.
7. RUN SYSTEM WIRING: - After disconnecting the power sources, refer to wiring diagram
(FIGURE 1) and run the system wiring to the location of the SC2. The wires should reach the
location of the SC2 with a little extra for strain relief loops.
8. NOTE WIRE POLARITY: - Insure that the polarity of the wires is correctly marked, using
colored wires or tags. Incorrect polarity should not damage the SC2, but incorrect operation
would result.
9. COMPLETE ARRAY AND BATTERY CONNECTIONS: - Connections to the SC2 terminal
block should be made with just the bare wire (not crimped spade or ring lugs unless the lugs
are crimped AND soldered).
10. COMPLETE LOAD CONNECTIONS: - DC loads not exceeding 30 amps can be connected
to the load terminals of the SC2. Higher current, or inductive loads such as pumps, motors or
inverters should be connected directly to the battery, using properly rated over-current
protection devices (fuses or circuit breakers).