6 Installation
6.1 Precautions
Do not install any PV or electronic components in rooms where flammable gas mixtures may occur!
Within the battery’s immediate surroundings, explosive gases may be generated. So please see that the battery room is
adequately ventilated and avoid generating sparks.
The following instructions for batteries must be adhered. We recommend these basic
precautions for any country. Check your local electric and safety codes for all applicable
precautions in dealing with DC wiring and battery installations.
⇒
DIN (German) VDE 0510 part 2, sections:
•
7. Precautions against explosion danger
•
8. Precautions against risks occurring by electrolyte gas (hydrogen sulphide)
•
9.
Location
⇒
National Electric Code including article No. 690. The unit shall be installed according to this regulation
6.2 Location Of Installation
The System-Manager must be connected to the solar PV array, the battery and the loads. The line loss and drops in
voltage should be kept to a minimum, so the System-Manager must be installed in a way that the shortest cable possible
and the most direct access can be used. This is a major decisive factor for the battery’s location as well as for the solar
PV array’s location. The cable lengths to the loads have a lesser effect on System-Manager site selection since
distribution throughout the building or site is necessary.
The ideal location for the battery is a well-ventilated battery room (keeping a minimum safety distance of 30 cm from the
System-Manager) inside the building but nearest to the solar PV array. Since both charging and discharging currents are
running via the battery cable connections, close proximity and short thick cables to the battery are recommended. This
battery cable connection is the point where the losses have the worst effect on the PV system’s efficiency and
performance.
The solar PV array should be installed in a way that – in the most unfavourable case – the voltage drop is not so high that
the battery can not be charged completely again. Within the limited period of time for equalise charging, the battery is
charged at a high voltage level. However, if the drop in voltage along the PV array cables is too high, this equalizing
charge voltage cannot be reached. The timer for the equalize charge stage will not start running until the equalise voltage
is reached, so the timer will be “stuck” and the System-Manager will stay in equalise mode permanently until the situation
is corrected. For example, if the MPP voltage at the PV array connection is 16.5V, minus 1.0V drop in voltage on the PV
array-to-System-Manager wiring, minus 0.3V drop in voltage at the System-Manager and the safety fuses, the maximum
voltage reaching the battery is only 15.2V.
The System-Manager must not be installed in locations with easily flammable liquids or mixtures such as gas bottles,
paint, varnish, solvents etc.. Installation is only permitted in areas where the System-Manager’s environmental
specifications are not exceeded (see technical data) . Furthermore, the System-Manager must not be installed and
operated in very humid rooms e. g. bathrooms.
The System-Manager must be protected from direct exposure to weather. Sun and external warming from nearby devices
should also be avoided.
The battery and the System-Manager must be installed in a place out of reach of children’s and
unauthorised persons. Therefore, we have not taken any precautions on the System-Manager
itself in order to prevent unauthorised use.
The surface on which the System-Manager is to be installed should not be easily flammable.
During operation, the backside of the System-Manager heats up. So the materials at the
location for installation should be able to withstand a constant temperature of 85°C without damage
or risk of fire.
System-Manager TAROM | 716148
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V09_45A
