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You searched for: Central Dry Systems
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Central Dry Systems


Unit Capacity

Two different sized units, the 2000 (a batch unit) and 3000 (continuous unit) are available in waterfree (A/F) versions. 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. Advertised composting capacities can be doubled for short periods.

All A/F units are supplied with a 1" drain hose which should be connected to the 1" drain at the bottom left of the unit. Liquid output, if any, should be collected or drained into an approved facility. Under seasonal or light residential use, the Centrex 2000 AF and Centrex 3000 AF should be able to evaporate all liquids; hookup of the drain is still recommended as a safety measure.

Sun-Mar waterfree systems use the handsome Sun-Mar Dry Toilet (in either white or bone), fitted with a removable bowl liner, and connected to the contral composting unit by means of a 10" diameter pipe section. Odor free operation is maintained by a fan which pulls air down through the toilet seat and up the vent stack. Sun-Mar waterfree toilet systems can only be used where the toilet can be placed directly over the composting unit.

Selecting The Right Unit
When it comes to picking the right unit for your needs, first decide whether you need an electric or non-electric unit. If you have continuous 110 Volt power, an electric unit is suggested. These feature a 370 watt 120v thermostatically controlled heater in a sealed compartment beneath the unit, and a standard 30 watt turbo fan directing air up a 2" vent stack. The combination of fan and heater are able to evaporate up to 9 litres of liquid per day; depending on usage there may be little or no liquid output.

We have two methods for you to select a SUN-MAR system. If you know what you want already, please click on the model name. Otherwise, please use our automatic model selector, an intuitive tool that will tell you exactly which model is right for you.

Electric or Non-Electric
If you have no electricity, then a non-electric (NE) unit is the right selection. Non-electric units are supplied with a 2.4 watt 12 Volt fan to assist updraft on the 4" stack. The absence of heat and reduced air flow limits evaporation on NE units.

AC/DC units are dual vented units with aboht a 2" and 4" vent for those who expect to have 110v power in the future, or are running a generator for 12 or more hours per day.





















Item IDDescriptionUOMUnit SizePkg QtyQuantity
CENTREX 2000AF
COMPOST TOILET 2000 HC DRY ELECTRIC1.001
CENTREX 2000-NE AF
COMPOST TOILET 2000 HC NON ELECTRIC DRY1.001
CENTREX 3000AF
COMPOST TOILET 3000 HC DRY ELECTRIC1.001
CENTREX 3000AF NE
COMPOST TOILET 3000 HC DRY NON ELECTRIC1.001
DRY TOILET
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Dry Toilet1.001