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4. INSTALLATION
This product may only be installed by a qualified electrical engineer.
4.1 Location
The product must be installed in a dry and well-ventilated area, as close as possible to the batteries. There should be a clear space of at
least 10 cm around the appliance for cooling.
Excessively high ambient temperature will result in the following:
•
Reduced service life.
•
Reduced charging current.
•
Reduced peak capacity, or shutdown of the inverter.
Never position the appliance directly above the batteries.
The MultiPlus-II is suitable for wall mounting. A solid surface, suitable for the weight and dimensions of the product must be available
(e.g., concrete, or masonry). For mounting purposes, a hook and two holes are provided at the back of the casing (see appendix G).
The device can be fitted either horizontally or vertically. For optimal cooling, vertical fitting is preferred.
The interior of the product must remain accessible after installation.
Try and keep the distance between the product and the battery to a minimum in order to minimize cable voltage losses.
For safety purposes, this product should be installed in a heat-resistant
environment. You should prevent the presence of e.g. chemicals, synthetic
components, curtains or other textiles, etc., in the immediate vicinity.
4.2 Connection of battery cables
In order to utilize the full capacity of the product, batteries with sufficient capacity and battery cables with sufficient cross section should
be used. See table.
Recommended battery capacity (Ah)
Recommended DC fuse
Recommended cross section (mm
per + and - connection terminal *, **
0 – 5 m***
5 – 10 m***
*
Follow local installation rules.
**
Do not locate battery cables in a closed conduit.
*** "2x" means two positive and two negative cables.
Remark: Internal resistance is the important factor when working with low capacity batteries. Please consult your supplier or the relevant
sections of our book 'Energy Unlimited', downloadable from our website.
Procedure
Proceed as follows to connect the battery cables:
Use a torque wrench with insulated box spanner in order to avoid shorting the
battery.
Recommended torque: 12 Nm (M8 nut)
Avoid shorting the battery cables.
•
Undo the two screws at the bottom of the enclosure and remove the service panel.
•
Connect the battery cables: see Appendix A.
•
Tighten the nuts well for minimal contact resistance.
12/3000/120 24/3000/70 48/3000/35 24/5000/120-50 48/5000/70
400–1200
200-700
400 A
300 A
2
)
2
2
2x 50 mm
50 mm
2
2
2x 70 mm
95 mm
100–400
400-1400
125 A
400 A
2
2
35 mm
2x 50 mm
2
2
70 mm
2x 90 mm
48/8000/110
48/10000/140
200-800
200–800
250 - 1000
200 A
300 A
2
2
70 mm
2x 50 mm
2x 50 mm
2
2
2x70mm
2x 70 mm
2x 70 mm
400 A
2
2
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