User Manual
DC Connections
Connect a Red 8 AWG wire to the POS+ lug on the distribution center’s fuse board. Make
sure this lug is torqued properly. In a similar fashion, connect a Black 8 AWG wire to the
NEG- lug on the distribution center’s fuse board.
A battery IS NOT required for converter operation. e battery works in conjunction with
the converter to supply DC power to the RV. A battery is typically only necessary if you do a
lot of dry camping or have slide-outs and/or a leveling system.
Deep-cycle batteries are recommended. ey can be either of the Lead-Acid or the AGM
type. e Amp hour (Ah) rating should be shown on the battery; for example, 120A. If you
do a lot of dry camping, we recommend using a deep cycle battery rated at 100 Amp hours
or more. e higher the Amp hour rating, the longer the battery will be able to deliver
power when the converter is not plugged in. If you are plugged into shore power most of the
time, a normal deep cycle battery will work.
When installing batteries, the batteries MUST be the same brand and type (preferably the
same age as well). Adding more batteries will provide longer use of DC appliances when not
on shore power. Due to the additional battery load, the converter’s battery charging ecien-
cy may be reduced. However, even in normal “Absorption Mode” (13.6 VDC range), the
batteries are being charged, just at a slower rate.
NOTE: e converter will not work without AC input. You may notice that, when a battery
is connected or reconnected to the converter’s output, the onboard fan may energize for a
few seconds. is is normal and is the converter’s circuitry recognizing the battery voltage.
You will notice the same occurrence when the converter is initially energized on Shore
power.
AC Connections
e WF-9800 Series Converter-Chargers receive power from the power cord on the
opposite end of the enclosure from the DC lugs. e WF-9835, WF-9845 and WF-9855
have a standard 15 Amp plug.
e WF-9865 and WF-9875 have a 20 Amp plug due to the higher current required from
the AC line to produce the high DC current output. e 20 Amp plug and corresponding
receptacle are shown in Figure 6 below. e 20 Amp receptacle must be wired back to the
fuse box using 12AWG wire minimum.
10