Hydro-Logic StealthRO200 - Electronic Shut-off Kit - Manual (Page 2)

Standard Reservoir Setup
The first step is to drill two holes somewhere in the lid of your reservoir, preferably away from the
area that bubbles and has more turbulence. The first hole, 5/16”, is to mount the electronic float
switch. The second hole, 15/32”, is to mount the mechanical float valve.
The electronic float switch has two nuts and two rubber gasket that you mount the lid in between.
Unthread the first nut and gasket and maneuver it over the male connector tabs at the end of the
cable. The mechanical float valve acts as a backup in case loss of power or failure of any of the other
components. It also serves as an entry way for the water from the Stealth-RO into the reservoir.
A. B.
Picture A shows a Merlin-Garden Pro and not a Stealth-RO which this kit is intended for.
Note how the electronic float switch and mechanical float valve are mounted in the lid of the reservoir.
Picture B is a side shot of the electronic float valve and mechanical float switch mounted under the
lid. You are looking at the edge of the reservoir.
Note that when installing the electronic float switch you must leave about an inch of thread above the
reservoir lid
(refer to picture A). This is important because you need to set the trip level of the
electronic float switch lower than the trip level of the mechanical float valve. The mechanical float
valve is only a backup in case the electronic float switch or some other component fails. The
mechanical float switch can be mounted horizontally or vertically as long as its trip level is above that
of the electronic float switch. These instructions show a vertical mount type. Test the full movement of
the mechanical float valve by blowing through the threaded end. Make sure you get full flow and
closure when you move the float up. Use plumbers tape on the threads and hand thread the quick
connect elbow fitting on
(refer to picture B).