Sun Mar Excel NE 2-3 People Continuous Use     The success of the Excel design meant that a three chamber unit could be specifically designed for those with NO continuous 110 volt supply. First launched in 1981, the Excel NE has no heater in the base but features an insulated Bio-drum to maintain the warmth of the compost. If the Excel NE is used residentially or heavily, or is in a place which is subject to downdraft, an optional 12 volt fan should be installed in the vent stack. This fan draws 1.4 watts and can be powered by a solar panel and/or 12 volt battery.     Evaporating capacity on the Excel NE is variable, so the 1" drain at the rear should be connected to an approved drain pit, container, or other facility.

Optional 12 Volt Fan
In Which Situations would I need a 12 Volt Fan?

    * If you have to put any bends in the vent stack (Sun-Mar recommends no more than two 45 elbows, even with a 12 Volt Fan installed).
    * If your cottage is subject to downdraft.


In Which Situations Would Sun-Mar recommend a 12 Volt Fan?

    * If the unit is being used residentially
    * If you expect heavy seasonal use

In Which Situations Would Sun-Mar Not Recommend a 12 Volt Fan?

If you cannot run the fan continuously, it will act as a blockage in the vent stack. If you need to get around this, you can install it in a "bypass vent" off of the main stack.

If you live in a coastal area that is rich in salt air - you may want to consider purchasing a more expensive, but more durable fan from Nicro; these fans are used in marine applications and may be purchased from marine supply stores. Our fans will stand up to most weather conditions, but do not do well in salt air.

12 Volt Fan ($50)

10 watt solar panel to power the 12V fan (optional) ($150)