The Centrex 3000 AF NE (Air Flow - Non-Electric) employs continuous flow design for very heavy cottage or medium residential use.
Manufacturers Description:With a continuous flow system, rotation of the drum moves compost along the larger and longer 3000 series drum, before it drops automatically into the collection housing at the end of the unit. Under normal operating conditions the drum will not have to be turned backwards for emptying. When used seasonally by up to 10 adults, compost will normally only need to be removed annually at the beginning of the following season.
The Centrex 3000 AF NE features a 4" vent stack which is used to vent the unit passively. We also include a 12 volt 2.4 watt fan that is required in the vent stack to assist airflow.
The Centrex 3000 AF NE is designed for use with a Sun-Mar Dry Toilet. A pipe piece, 45" in length and 10" in diameter, is supplied with the unit. The only restriction on installation is that the Dry Toilet needs to be directly above the unit so that there is a straight drop. This is long enough if the floor of the bathroom is up to 37.5" above the surface that the composter is placed on. The pipe piece can be cut to size and additional pieces ordered if necessary.
All 3000 series units are supplied with a 1" drain hose which should be connected to the 1" drain at the bottom left of the unit. An overflow drain may be needed to deal with excess liquid.

The Centrex 3000 AF NE (Air Flow - Non Electric) is designed for use with a Sun-Mar Dry Toilet (purchased separately.
About The Elegant Sun-Mar Dry Toilet This elegant Sun-Mar Dry Toilet is designed for use with the waterfree Centrex 2000 AF (Air Flow) family and Centrex 3000 AF family of central composting systems. Available in either White or Bone, the Dry Toilet has a seat height of 15" and a "regular sized" toilet seat.
The vent system on all AF units continuously draws air down the toilet to prevent odors in the bathroom. However, if the toilet is too high above the composter for air to be drawn down, the Dry Toilet should be vented directly. To do this, a 3" or 4" vent pipe can be installed at the rear left or rear right of the toilet, and, if necessary, a 12 Volt fan can be fitted in a section of 4" vent pipe to enhance air flow. All Dry Toilets include a bowl liner that fits beneath the seat and which can be removed for cleaning as required. Manufactured from durable and sturdy fiberglass.
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