Unit Capacity Three differently sized units, the Centrex 1000 (batch unit), Centrex 2000 ( batch unit) and Centrex 3000 (continuous unit) are available for use with 1 pint flush toilets. The selection should be based on both whether the unit is used seasonally or residentially, and the number of people that will be using the unit. Typically, the Centrex 1000 is suitable for light to medium cottage use, the Centrex 2000 for medium to heavy cottage use or light residential use, while the continuous flow Centrex 3000 series is suitable for very heavy cottage use, or medium residential use. As with all units, advertised composting capacities can be doubled for short periods.
All central low flush systems are supplied with a 1" drain hose which should be connected to the 1" drain at the bottom left of the unit. Liquid output should be collected or drained into an approved facility.