Installation

Annoyed by the disposal of your toilet in RV, boat or garden shed?

Free yourself with a composting toilet!

Installation

What’s in the box?

  • Your new Nature’s Head® composting toilet!
  • Urine container with screw cap
  • Installation set:
    • 5 feet (approx. 152 cm) long, flexible ventilation tube, inside diameter 1½ inch (about 3,8 cm)
    • Connection piece for the connection of the ventilation pipe to the outflow
    • Crank (Spider or Standard), depending on the model
    • 2 mounting brackets and knurled nuts
    • 4 fixing screws (for installation on wooden floor)
    • 18 inch (approx. 45.7 cm) cable for the 12 V fan (the fan is preinstalled)
    • Fuse and fuse holder for installation on a battery
    • Allen key for spider handle assembly (depending on version)
    • Spray bottle
  • Operation manual
  • Warranty card

Attention: The fan is preinstalled!

What you might need in addition…

Your Nature’s Head® separating toilet is supplied with most of the components necessary for installation. Except of this is the external fan, since each situation requires a different one. You could use, e.g., gill plates in various sizes, for example, if you already have an old ventilation hole. For a new installation, a size of approx. 6 cm diameter is enough. A fly screen or a similar solution with flynet would be recommended to make it impossible to insects to penetrate into the ventilation tube.

Please refer to the installation instructions for the ventilation conditions. Please feel free to contact us if you have any questions concerning your installation.

For some installation variants, longer hose lengths may be required, for longer lengths the hose can also be replaced by standard PVC pipe. In this case, however, be aware that a flexible piece of hose is required for service work towards the toilet (pull off the hose to empty the solids container). 

If you have a floor construction other than wood in your installation, other mounting screws may be necessary. For installations on concrete floor or similar. you can alternatively attach the toilet to a piece of lacquered wood which is screwed or glued to the concrete.

If you want to operate the toilet on a 230 Volt power supply (house connection), this can be done with the help of a power supply.

As a composting medium we recommend coconut fibers. You will find it as coco coir bricks in our shop.

Mounting

If you have found a nice place for your new Nature’s Head®, make sure that there is enough space for use and service.

Ensure that the toilet lid can be fully opened.

To remove the urine container or the toilet bowl, the toilet bowl must be tilted backwards. For this you need at least 4 cm of space between the back of the toilet and the wall.

You need sufficient space on the side for the hose connection and the crank. Both can be attached, independently of each other, on both sides of the toilet.

When the standard crank is used, the width of the toilet is approximately 53.3 cm. For narrow spatial conditions, the use of the spider handle is recommended, which means that the width can be reduced to approximately 45.1 cm.

On the left side of the toilet (seen from the front) you need at least 5.1 cm space to push the toilet bowl out of the hinge for service.

If you have very little space at your installation site, you can also perform the necessary service by loosening the toilet from the floor and moving it slightly.

Assembly

After you have selected a suitable place for your toilet, it is necessary to attach it to the bottom of the boat, the camper or the garden shed. For this, you need the two mounting brackets supplied.

Normally, the angles are installed positioned under the toilet in the recesses (see photo). Retractable screws for installation on a wooden floor are enclosed with the mounting set.

To place the brackets on the floor, place the toilet in the previously selected position. Use the knurled nuts to attach the brackets to the toilet.

If you want to mount the brackets to the outside, simply mark the required drill holes with a pencil.

If you want to attach the angles as shown in the picture below the toilet, carefully mark the outlines of the angles on the floor (possibly note the distance between the angle and the drawn line), remove the angles from the toilet, position them exactly inside of the outlines and then mark the drill holes.

Before drilling any holes in the floor, make sure that there are no cables or similar.

If you attach the toilet to a floor that gets wet more frequently, it is recommended to seal the drill holes.

Do not overtighten the knurled nuts and screws to avoid damage to the connections!

Ventilation

The toilet must be vented to the outside of the room, whether it is a boat, a mobile home or a garden house. This is necessary to remove odors during usage and, even more important, moisture and to facilitate the growth of useful bacteria which promote the composting process. On one side, the fan draws air outwards, fresh air flows on the opposite side of the toilet.

Installation of ventilation is the most difficult part of assembly. Depending on the placement of your toilet, you may need to drill or cut holes in the wall, ceiling, or floor. With the right tool this should not be a problem. If you are not sure whether your tool or craft skills are sufficient, you still have a tightness guarantee on a mobile home, you should commission a specialist.

You can vent your system both vertically over the roof, horizontally through the wall or even down through the floor. The fitting hose and the connection for the inside are included in the set, the hose is normally only plugged in. If the hose is guided vertically upwards, you can use a hose clamp for the safety on the inside to prevent slipping during vibrations.

Installations with 1 1/4 inch PVC pipe are also possible. In this case, please ensure that the toilet can be easily separated from the ventilation for service.

When retrofitting on boats, you can often use the old opening of your sewage disposal by connecting the venting hose to the adapter and installing a deck vent over the opening.

Due to the variety of possibilities that can arise during the installation, the installation set does not have a gill plate, solar fan, mushroom fan or similar for mounting on the outside.

Please ensure that wind and water can not penetrate into the toilet through all external installations, we recommend the installation of a fly screen or a flynet as well, so that no insects can enter the ventilation.

Power supply

A simple 12 V computer fan, which needs less than 2 Ah in 24 h, is the only part of the toilet that needs electricity. The matching low-voltage plug (5.5 mm x 2.5 mm) with a 180 cm long cable is included in the set and is plugged into the socket on the fan housing.

As with all electrical installations, ensure that the fan is operated only in a protected circuit. The fuse should be at least 2 A and maximum 5 A at 12V. A fuse and fuse holder for operation in 12 V unprotected systems, e.g. with direct connection to a battery, are also attached to the set.

You can of course also operate the fan at a 230 V current source, you need a suitable plug-in power supply,  you’ll find it in our shop.

If you are unsure about the electrical installation, please consult an electrician.

You can also operate your system with a solar fan if no 12 V or 230 V connection is available. Make sure that the solar fan contains a battery to ensure continuous operation. You can leave the pre-installed fan in place in this case.

Installation tips

If the installation of the ventilation on one side of your toilet is better than on the other side, you can change the fan housing at any time with the filter housing on the other side.

When the toilet is delivered, the crank handle has not yet been installed, it must be fastened first. The standard crank is fastened with a metal sleeve and a split pin, the spider handle with a hexagon socket screw.

If you wish to attach the crank to the opposite side of the toilet, first disassemble the stirrer, turn it around and reinsert it.