Installation: Venting
Reversing the Fan and Filter Housing If installation of the ventilating hose is more favorable on one side of the unit than the other, the fan/filter housing is inter- changeable with the filter-only housing. This is accomplished by swapping sides with the components and their respective housings. Attaching a mesh fabric or screen (not provided) over the opening is necessary to prevent the entry of insects into the system. Any mesh fabric such as window screen or nylon netting will provide an adequate insect barrier. If a sharp 90 degree turn from the fan housing is needed, a PVC elbow (not provided) may be used to achieve a proper configuration. In this case, the vent flange provided with the toilet would be placed on the inside wall around the opening to the vent with the flat side to the wall. On many boats, the pump-out fitting can be removed and the mushroom vent mounted over the existing hole. The venting hose provided with the unit will attach directly to the adapter. Clamping the hose to the fan housing is not necessary on the connection for the unit, and normally not necessary on the exterior connecter. With an overunit connection, you may find it necessary to clamp this end depending on the amount of support provided for the vent hose. If the hose is supported properly, you will probably not need a clamp. The vent hose must be attached to the housing which has the fan inside it. The unit is designed to pull fresh air through the unit and ventilate it outside. If you disassemble the fan housing, always check to be certain that the fan is blowing out of the vent before re-attaching the vent hose. Installation: Power Connection
As with all electrical connections, be sure your unit is on a fused circuit. The fuse should be no less than 5 amps and no more than 10 amps (12V). A fuse holder and fuse are provided for use in a non-protected 12 volt system such as direct attach- ment to a battery. The fan may also be powered by a 240 volt source with a Power Transformer (AC Adapter) that reduces the power to 12 volts. If the system is being powered by the 240 volt Power
Transformer (AC Adapter) disregard the fuse, fuse holder and single pin cable as they are intended for use ONLY with a 12 volt power source. No fuse is required when using the Power Transformer (AC Adapter).
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