Davey OZOMATIC OZONE GENERATORS - Manual (Page 7)

7
MINI FOOTWELL INJECTOR
The mini footwell injector consists of a small return jet that is installed in the lower portion of the spa. It is
connected to the return line and as water passes through the footwell injector, ozone is drawn in by venturi
action. This method is very cost effective and is suitable for all new spas. During both the manufacture stage
and on existing spas where access to the piping and lower section of the spa is available. This system has good
injection efficiency.
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Position the mini footwell injector in the pool or spa wall as low as is practical. Bear in mind that the
Ozomatic Unit must be as close to the injector and the operating light must be visible.
A 25mm hole must be cut into the spa wall and the mini footwell injector must be sealed into this hole.
The injector outlet is tightened using a 5/16 allen key.
Break into the water return line with a reducing Tee piece. Using 15mm PVC pipe, plumb the mini
footwell injector into the Tee.
Form a double loop of ozone hose and secure it above the water level.
Note: There is a non-return valve on the ozone hose. Blow into the hose to ensure ozone will be able to
flow in the correct direction. The non-return valve is designed to operate under pressure and it is
possible for water to seep past it when no pressure is applied; hence the loop is an extra safeguard to
stop water entering the Ozomatic.
Close the air inlets to spa and turn on the pump. A fine mist of bubbles should be blowing from the
injector. Using a finger over the end of the ozone hose, ensure that there is suction into the hose.
Connect hose to Ozomatic.
Plug the Ozomatic into the power outlet (that controls the pump) and ensure that the operating light is
on.
OZONE AIR LINE – MUST BE DOUBLE LOOPED AND CONNECTED ABOVE WATER LEVEL