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How to Operate the CENTREX 2000 AC/DC
Product Features
Technical Specs
Return Policy
CENTREX Central systems are an ideal solution for those who want a traditional looking toilet in the bathroom, and who have the ability to place the central composting 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 fixtures to be installed in the bathroom are 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 AC/DC unit is designed for medium to heavy seasonal use or light residential use. This low flush central system is a "hybrid" central composting toilet system, meaning that it can operate with or without electricity. This makes it an ideal model for homes that don't currently have electricity, but expect to in the future, or homes that experience frequent power outages or those using generators for more than 8 hours per day. The Centrex 2000 AC/DC does require plumbing connections for water. When operating electrically, the CENTREX 2000 AC/DC has a thermostatically controlled heater that helps to warm and evaporate liquid and a fan assembly that maintains a partial vacuum within the unit at all times, ensuring odorless operation. When the power is out, the unit will default to the 4" vent stack that acts like a chimney on a wood stove, constantly drawing air upward and out of the unit to maintain odor free operation.

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 AC/DC:
- For initial start up, add some Compost Sure Blue (hemp stalk 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 Blue 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
- Central system that uses water
- Designed for use in areas with or without electricity, particularly for those who operate on a generator, experience frequent power outages, or who do not currently have electricity, but expect to in the future
- Works with one pint low flush toilets, SOLD SEPARATELY
- NSF tested and certified for a continuous 6 months at maximum rated capacity (click here to view NSF certification)
- Electrical features include a thermostatically controlled heater in the base of the unit to warm and evaporate excess liquid and a fan assembly in the top of the unit that maintains a partial vacuum to ensure odorless operation at all times
- When electricity is not present, the 4" Vent stack maintains a partial vacuum, also preventing any odor
- A 12 Volt DC fan is included with the unit, and should be installed in the vent stack if the unit is going to be used residentially or heavily, or if it's in a location that may be subject to downdraft. (Please note, power source for the fan is not included.)
- 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 one pint low flush toilets, SOLD SEPARATELY
- More than one toilet can be installed on the CENTREX 2000 system because the capacity limitation is based on the number of people using the system rather than the number of toilets
- View Dimensional Line Drawing
- View Product Instruction Manual
- Composting Capacity When Operating Electrically:
- Residential & Continuous Use: 4 Adults or a Family of 6
- Weekend & Vacation Use: 7 Adults or a Family of 9
- Please note, family numbers above include both adults and small children
- Composting Capacity When Operating Non-Electrically:
- Residential & Continuous Use: 3 Adults or a Family of 5
- Weekend & Vacation Use: 6 Adults or a Family of 8
- Please note, family numbers above include both adults and small children
- Electrical:
- Max Amps (with heater on): 3.6
- Fan Watts: 35
- Heater watts (when thermostat switches it on): 370
- Average Power Use in Watts (heater on 1/2 time): 200
- Vent & Drains:
- Vent Pipe: 4" Sewer pipe and 2" Cent. Vac. tubing
- Drain: 1" O.D. (Note: drain hookup is required on this unit)
- Dimensions:
- Unit Dimensions: 45-1/2" W x 27" D x 28" 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: 27-3/4"
- Height from base of unit to top of waste inlet assembly: 31"
- Height of waste inlet assembly: 3-1/4"
- Diameter of waste inlet (including flange): 3" DWV
- Vent inlet center distance from rear of unit: 11" (Same for both 2" and 4" vents)
- Vent inlet center distance from left side of unit: 12" (Same for both 2" and 4" vents)
- Height to center of 2" vent: 23-1/2"
- Height to top of 4" vent: 32"
- Unit shell is constructed of durable fiberglass and ABS plastic
- Product Weight: 103 lbs.
- Shipping Weight: 124 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.
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