120V Inverter Function; Battery Charger Function; Transfer Switch Function; Fresh Water System - ModVans CV1 Owner's Manual

120V Inverter Function

The inverter's primary function is to take 12V from the house 12V system and convert it for use in the
120V system. To use 120V power, turn on the inverter via the Control Panel switch. The 2000W inverter
is powerful enough to run the rooftop A/C; however, the house battery alone cannot run the rooftop
A/C (that would require a much, much larger battery!). To run the rooftop A/C, you must either run the
chassis engine (to allow its alternator to function as a generator) or plug into shore power. When the
inverter is on, the 120V GFI outlet should be active and available for use to charge laptops and other
devices and to run small tools or appliances.

Battery Charger Function

The inverter can charge the CV1's batteries when plugged into shore power. To charge your CV1's
battery with the integrated battery charger, plug your shore power cable into the CV1 shore power
outlet and a compatible 120V outlet and turn the inverter on via the Control Panel. The battery will not
charge unless the inverter is turned on.

Transfer Switch Function

When your CV1 is plugged into shore power and the inverter is on, all 120V power applications are run
directly from shore power. This allows you to run loads such as the rooftop A/C that cannot normally be
run off the house battery.
The shore power cable supplied with the CV1 is designed to be plugged into a 120V 30A shore power
receptacle such as you will find in most RV parks. The input is standard 120V, so, with the necessary
adapters, you can plug your CV1 shore power cable into a standard 120A 15A or 20A wall outlet.
However, the cables that supply a typical wall outlet are not large enough to support running the
rooftop A/C. If you compare the diameter of the CV1 shore power cable with that of a standard
extension cable, you'll also realize that a standard extension cable is not large enough to support
running the rooftop A/C. Cables that are too small cannot handle the current and can easily overheat
and possibly cause fire or electrocution. Never use an extension cable to connect shore power. Instead,
reposition your CV1, use a compatible 120V 30A outlet, or run your chassis engine.

Fresh Water System

The fresh water system consists of a fresh water tank, a 12V water pump, the sink faucet, and the
optional external shower. To use the fresh water system:
1. Fill the fresh water tank with cool, clean, potable water. In 25-gallon models, the fresh water
tank is located in the bottom of the driver side storage cabinet. The fill door is accessed through
the top compartment of the cabinet, near the back of the shelf.
2. Turn the Water Pump switch on via the Control Panel. The water pump should automatically
stop and start as water pressure is needed.
3. Operate faucets normally.
If the system has been drained or otherwise run dry, you must clear the air out of the cold and hot water
lines (when equipped with the hot water heater) by opening the faucet in each direction, cold and hot,
until the water flows smoothly. Failure to clear the air out of the lines may cause the water pump to run
continuously and the water heater to malfunction.
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