Product Information
The Excel is the best-selling unit in North America and for good reason. It is a high capacity Bio-drum toilet that is very simple to operate, features well proven technology and is extremely reliable. The Excel was the first ever self-contained composting toilet to be certified by the National Sanitation Foundation (NSF). So, when you purchase an Excel, you are literally purchasing a composting toilet that sets the standard.
The Excel has enough capacity that it can be used just about anywhere; in residences, cottages and even in light commercial applications. To simulate residential use the Excel was tested by the National Sanitation Foundation (NSF) at maximum capacity for 6 continuous months, during which the Excel produced no odor and produced a clean, safe compost. Only Sun-Mar self-contained units are listed for residential and cottage use by NSF, whose Standard #41 is the toughest composting performance standard in the world.
For comfort the Excel has a sturdy detachable footrest which can be removed to pull out the finishing drawer.
In normal use the Excel can normally evaporate all liquids, however a ½" emergency drain is fitted at the rear and this should be connected if the unit is to be used residentially or heavily, or if prolonged power outages are expected.
The Excel comes in three models: Standard, Non-Electric (NE) and AC/DC.
The Excel Standard is a 115 volt unit with a 2" vent is attached at the top back of the Excel and can be installed invisibly by running it through the wall and up the outside wall.
The Excel NE has no fan or heater. Odorless operation is achieved by a 4" vent mounted at the top rear of the unit which acts like a chimney on a wood stove. For good air movement the vent should be installed vertically and to 2-3 feet above the peak of the roof. If the Excel NE is used residentially or heavily, with a bend in the vent, or is in a place which is subject to downdraft, the 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 12 volt marine battery.
The Excel AC/DC is a standard 115 volt Excel unit, but with 1" safety drains at the rear and dual (2" and 4") vent stacks. The unit uses the regular 2" vent when 115 Volt power is available and defaults to the 4" NE vent when it is not. A 12 volt 1.4 watt fan is included for use in the 4" vent stack.
