VII. Pre-Installation Checklist
Electrical Outlet and Grounding Instructions
A dedicated, grounded 115 V, 60 Hz, 20 A GFCI outlet is required.
GROUNDING INSTRUCTIONS – This appliance must be grounded. In the event of a malfunction or breakdown,
grounding will reduce the risk of electric shock by providing a path of least resistance for electric current. This
appliance is equipped with a cord having an appliance-grounding conductor and a grounding plug. The plug must be
plugged into an appropriate outlet that is installed and grounded in accordance with all local codes and ordinances.
WARNING – Improper connection of the appliance-grounding conductor can result in a risk of electric shock.
Check with a qualified electrician or service representative if you are in doubt whether the appliance is properly
grounded. Do not modify the plug provided with the appliance; if it will not fit the outlet, have a proper outlet
installed by a qualified technician.
Inlet and Working Pressures
Feed water must be maintained between 45-65 psi when water is flowing. A booster pump or larger diameter
plumbing may be required in low-pressure or low-flow installations. A pressure regulator should be installed to
ensure that pressure does not rise above 65 psi. Maximum system working pressure is 150 psig (1,034 kPa).
Temperature
Ambient temperature must be maintained above 32°F (0°C). Freezing temperatures will cause breakage of
equipment and VOID ALL WARRANTIES.
Water Temperature
Inlet water temperature must be maintained between 35°F (1.7°C) and 90°F (32.2°C) to prevent damage to the
system's membranes.
System Location
FOR INDOOR USE ONLY. Failure to comply with this requirement can cause significant damage to the system and
will create a safety concern.
Plumbing - By-pass
A by-pass is required prior to all water treatment systems to
allow untreated water to reach the point of use during system
maintenance and repair.
Plumbing - Softener
Installations that utilize softener or pretreatment tanks should have
a by-pass that will allow softened water to reach the point of use
during reverse osmosis system maintenance and repair.
Plumbing - Water Heater
If a water heater is connected to the softened water line, a check
valve should be placed on the inlet to the water heater to ensure
that the RO system does not pull water from the water heater during
periods of feed water pressure fluctuation.
Pre/Post Filtration
Follow manufacturer guidelines for all pre/post-filtration equipment. Pre/post-filtration should be placed in close
proximity to the reverse osmosis system.
Reverse Osmosis System
The system should be placed on a shelf or rack.
System Blending Valve
The system was shipped with the blending valve CLOSED to allow the system to produce very low TDS water. For best
results, adjust the blending valve after the system has been running for at least 1 minute and the pressurized bladder
tank is nearly full (if equipped).
Floor Drain
This installation will require close access to a floor drain for the drain water (brine) from the reverse osmosis system.
S-Series Technical Manual
8
Example of by-pass plumbing