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How to Operate the CENTREX 2000 AF NE
Product Features
Technical Specs
Return Policy
Customer Reviews For This Product
CENTREX Central systems are a great option for anyone who wants a traditional looking toilet in the bathroom, and who has the ability to place a central composting directly unit below the toilet. It is important to note that with all central systems, what you are purchasing is the central composting unit that is installed on the lower level; the toilet fixture to be installed in the bathroom is sold separately.
The CENTREX 2000 family features a Bio-Drum that is 50% larger than the CENTREX 1000 series units, meaning that the CENTREX 2000 AF NE system is designed for medium to heavy seasonal use or light residential use. The CENTREX 2000 AF NE unit is a non-electric, waterless central system, ideal for those who are truly living off the grid. The CENTREX 2000 AF NE comes complete with a 4" vent stack and 12 volt 2.4 watt fan, which allows the unit to operate odorlessly by drawing air down the toilet seat and up the vent stack. Please note, a power source for this fan is not included.

All units in the CENTREX 2000 family have been tested by the National Sanitation Foundation (NSF) and are certified to comply with NSF-ANSI Standard #41, the only North American performance standard for composting toilets. This testing and certification guarantees that this system will operate odorlessly and produce a clean, dry compost that is safe and sanitary. Visit the NSF website to see the CENTREX 2000 family's NSF Certification Listing.
How to operate the CENTREX 2000 AF NE:
- For initial start up, add some Compost Sure (peat bulking material) into the Bio-Drum together with some Microbe Mix.
- Use any toilet paper you want; the composting toilet will compost it without a problem.
- For ongoing operation, add a cupful of Compost Sure per person, per day of use. Every 2-3 days (while unit is in use), rotate the drum 5 or 6 full revolutions. For weekend use, just rotate before you leave at the end of the weekend.
- When the Bio-Drum is half to 2/3 full, some of the compost should be moved to the finishing drawer. To do this, simply release the drum lock and rotate the drum backwards. Finished compost drops automatically into the finishing drawer. This process takes less than a minute, and most importantly, you never come into contact with fresh material.
- When compost is moved to the finishing drawer, it should be left there for at least 4 weeks so it can finish and sanitize. In the finishing drawer, it will be isolated from contamination by fresh material in the toilet. Once 4 weeks have passed, you can remove the finished compost from the finishing drawer at any time. The drawer is easily pulled out by hand; no tools are needed to open it.
- What do you do with the finished compost? Add it to your flower garden! The finished product is clean, dry, non-offensive, and sanitary. It will look and smell just like any other regular compost that might come out of a garden composter.

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Features
- Dry central system non-electric unit that does not use water
- Works with dry toilet, SOLD SEPARATELY
- Will evaporate all liquids under normal conditions, producing zero output
- Features patented Bio-Drum™ for composting capacity of 5 adults (weekend use) or 3 adults (residential and continuous use)
- NSF tested and certified for a continuous 6 months at maximum rated capacity (click here to view NSF certification)
- 4" vent stack and 12 volt 2.4 watt fan must be installed (power source for the fan is not included). These will maintain a constant airflow through the unit, ensuring odorless operation.
- All Sun-Mar units feature 3-chamber technology:
- The patented Bio-Drum™, where compost is mixed and aerated
- The Evaporating Chamber, where excess liquid is evaporated
- The Finishing Drawer, where finished compost is kept separate from unfinished material

Technical Specs:
- Designed for use with dry toilet, SOLD SEPARATELY
- Only one toilet can be installed on the CENTREX 2000 AF NE system, because the toilet must be installed directly above the central composting unit
- View Dimensional Line Drawing
- View Product Instruction Manual
- Composting Capacity:
- Residential & Continuous Use: 3 Adults or a Family of 5
- Weekend & Vacation Use: 5 Adults or a Family of 7
- Please note, family numbers above include both adults and small children
- Unit comes with a 12 volt 2.4 watt fan that needs to be installed. Power source for the fan is not included.
- Vent & Drains:
- Vent Pipe: 4" sewer pipe
- Drain: 1" O.D. (Note: drain hookup is required on this unit)
- Dimensions:
- Unit Dimensions: 45-1/2" W x 26-1/2" D x 26-1/2" H
- Width required to turn handle: 49"
- Shipping Carton Dimensions: 47" L x 28-1/2" W x 36" H
- Rough-in Measurements:
- Depth required to remove finishing drawer: 45"
- Note: Waste inlet is the "collar" at the top of the unit that the toilet drain connects into
- Height from base of unit to bottom of waste inlet assembly: 26-1/4"
- Height from base of unit to top of waste inlet assembly: 31-1/2"
- Height of waste inlet assembly: 5-1/4"
- Diameter of waste inlet (including flange): 10-3/4"
- Vent inlet center distance from rear of unit: 11"
- Vent inlet center distance from left side of unit: 12"
- Height to top of vent outlet assembly: 32"
- Unit shell is constructed of durable fiberglass and ABS plastic
- Product Weight: 93 lbs.
- Shipping Weight: 114 lbs.
- This product ships via common carrier truck line from Tonawanda, New York
- Limited Manufacturer's Warranty:
- 5 Years on shell
- 3 Years on all other parts
- For complete details, please see our Warranty Information page
Return Policy:
Please note, there is a 20% restocking fee on all returns of this item, and original shipping charges are non-refundable. For complete details, please see our store Return Policy page.

Model: Centrex 2000 AF NE, Installed 2001
Location: Installed at summer cabin, Gulf Islands, BC
Reviewed By: Sandra Korpan
We were pleasantly surprised at the results the first time we emptied
the drawer of our Centrex 2000. The compost was not offensive at all.
The toilet is very easy to maintain. We use boiling water and your
"Compost Quick" to clean it. We have a solar powered fan attached to
it. We are very please with our investment, and feel that a composting
toilet is the only way to go in a setting such as this. However, we
also feel strongly that composting toilets should be introduced in "on
the grid" settings as well, because the make good ecological sense.
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