Owner manual
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 










