G) Charging Multiple Battery Banks - NewMar 12-1800IC Installation & Operation Manual

DC Fuse Chart
Model
12-1800IC
12-1801 ICF
12-2500IC
24-2200IC
24-2201 ICF
32-2400IC
To gain access to the DC wiring lugs of the inverter/charger, remove the wiring access cover
from the front of the unit (plate is screened with the "Perfect Wave" or "Guided Wave" trade-
mark/logo), which is held in place by six phillips-head screws.
A pair of large screw compression lugs for DC wiring are located in the compartment on the
far right. Use the provided 3/8" hex wrench for loosening and tightening these terminals.
CAUTION: Do not attempt to loosen or tighten these terminals when the DC wiring is con-
nected to a battery. There is a possibility of shorting through the wrench between the case
and the (+) terminal, which will cause a violent spark and possible injury.
DC wires are fed through the two access ports on the right-hand side of the unit labeled "(+)
POSITIVE" and "(-) NEGATIVE". After the wires have been attached to the terminals, tighten
the cable strain relief securely with a phillips screwdriver to protect against any possible
loosening of the DC wires.
Install a properly sized and located DC fuse (as per ABYC recommendations cited above) in
the positive leg of the battery wiring, then attach the wires to the battery, carefully observing
correct polarity. Note: It is normal to encounter a spark when connecting the final battery wiring
due to the initial charging of an internal input capacitor.
Note: The temperature compensation sensor will also be attached to the negative terminal of
the battery, so complete that installation also (as described in the section F, following) before
securing the negative terminal lug.
CAUTION: A reverse polarity connection will result in damage to the inverter/charger which
is not covered under the warranty.

G) Charging Multiple Battery Banks

If desired, the charger may be wired to charge multiple battery banks. This can be accom-
plished using NEWMAR's BI-100 (12 volt system) or BI-24-100 (24 volt system) Battery
Integrator*. The device acts as a "smart" switch, connecting independent battery banks only
when a charging voltage is present, then disconnecting them for selective discharge. This
allows you to also charge an engine start bank, for instance, whenever external AC is
present, but draw current only from the house or dedicated inverter bank whenever the
inverter is operating. *Note: 32 volt model not available at this time—contact factory.
Note: Standard diode-type isolators are not recommended for splitting the output of the
internal charger among multiple battery banks, as the voltage drop through the diodes will
result in chronic undercharging of the additional banks.
8
P.O. Box 1306
Newport Beach,
California 92663
Fuse Value
200 Amp
200 Amp
300 Amp
150 Amp
150 Amp
150 Amp
www.newmarpower.com
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: sales@newmarpower.com