Table of Contents
  1. Introduction
  2. Installation
    1. Preparation
    2. Installation Instructions
    3. Starting your toilet
  3. Maintaining Efficiency
  4. Use and Care
  5. Troubleshooting
  6. Warranty


Tools Required
  • Standard screwdriver
  • Drill
  • 2 1/4 hole saw
  • Hammer
  • Roofing nails
  • 100% adhesive silicon calking (do not use latex silicon)
  • Plum bob or weighted string
  • Pencil


  • Always wear goggles and protective clothing while operating hand and power tools.
  • Observe all precautions and operating instructions provided by the tool manufacturer.
  • Ensure there are no electrical wires, water pipes or gas pipes in the area you are cutting or drilling.

Before installing your BioLet

  1. Check with your local health authorities and building inspector for regulations governing the installation of your BioLet.
  2. Ensure the flow of air into the bathroom is from the living area (not from outdoors). A 1” gap under the bathroom door or a vent in the bottom of the door or wall will ensure sufficient airflow to the toilet. Overhead vents and open windows should be used with caution as these may cause a negative pressure in the room and promote a back draft into the room through the toilet causing the presence of an unpleasant odor.
  3. Ensure there is 28 in front of toilet to accommodate removal of the tray.
  4. Ensure the temperature in the room where the toilet is to be installed can be maintained above 64F during periods while the toilet is being used.
  5. Ensure the floor under the toilet is level and insulated or heated.
  6. Ensure there is a grounded 110 VAC outlet within 5 of the toilet.
  7. Ensure the vent pipe will be able to extend at least 6 above anything within 10 of it or above the peak of the roof whenever possible. (See the Installation and Theory of composting toilets; maintaining aeration sections)
  8. Ensure your installation can be achieved with the addition of no more than 2 45 angles.
  9. Verify that the total run for the vent pipe is less than 30 in a straight up installation or 27 if 2 45 angles are required. Consult with BioLet USA technical support if a longer run is required.

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