SPECIFICATIONS - QUALIFIED SYSTEM PERFORMANCE
Membrane Production
1
Membrane TDS Reduction
1
System Production
2
TDS Reduction
2
Maximum TDS
Maximum Water Hardness @ 6.9pH
Maximum Chlorine in Water
Supply Water pH Limits
Drain (reject water) Flow
Empty Storage Tank Precharge
Storage Tank Capacity
2
Supply Water Pressure Limits
Supply Water Temperature Limit
Efficiency
3
Recovery
4
Efficiency rating means the percentage of the influent water to the system that is available to the user as
3
reverse osmosis treated water. Under operating conditions that approximate daily usage.
Recovery rating means the percentage of the influent water to the membrane portion of the system that is
4
available to the user as reverse osmosis treated water when the system is operated without a storage tank
or when the storage tank is bypassed.
Non-potable Water Sources: Do not attempt to use this product to make safe drinking water from non-
potable water sources. Do not use the system on microbiologically unsafe water, or water of unknown
quality without adequate disinfection before or after the system. This system is certified for cyst reduction
and may be used on disinfected water that may contain filterable cysts.
Arsenic Reduction: This system shall only be used for arsenic reduction on chlorinated water supplies
containing detectable residual free chlorine at the system inlet. Water systems using an inline chlorinator
should provide a one minute chlorine contact time before the reverse osmosis system.
Nitrate/Nitrite Test Kit: This system is acceptable for treatment of influent concentrations of no more
than 27 mg/L nitrate and 3 mg/L nitrite in combination measured as N. It is certified for nitrate/nitrite
reduction only for water supplies with a pressure of 280 kPa (40psig) or greater. This sytem is supplied
with a nitrate/nitrite test kit. Product water should be monitored periodically according to the instructions
provided with the test kit.
Total Dissolved Solids: The Reverse Osmosis System contains a replaceable membrane cartridge critical
for the effective reduction of total dissolved solids (TDS).
Replacement of the reverse osmosis membrane cartridge: The reverse osmosis system contains a
replaceable membrane cartridge critical to the efficiency of the system.This membrane should be replaced
every 12 months, or more often based on your local water. Only replace the reverse osmosis membrane
with a part approved for use in your Brita
Installations in The Commonwealth of Massachusetts: The Commonwealth of Massachusetts requires
installation be performed by a licensed plumber and do not permit the use of saddle valves. Plumbing code
248-CMR of the Commonwealth of Massachusetts must be followed in these cases.
USS-335 installation instructions
U.S.
METRIC
35 ± 7 gpd
(106-159 lpd)
96.6% minimum
96.6% minimum
19.4 gpd
73.4 lpd
97.5%+ typical
97.5%+ typical
2000 ppm
2000 ppm
10 gpd
2.64 gpL
3.0 ppm
3.0 ppm
4-10
4-10
3-5 x product flow
3-5 x product flow
5-7 psi
35-48 kPa air
2.8 gallons/1.7 water
10.6 liters/6.4 water
40-100 psi
280-689 kPa
40-100° F
5-40°C
19%
19%
30.6%
30.6%
Reverse Osmosis system.
®
Specifications
Industry standards measure RO
1
Membranes performance with no
back pressure on the product water,
at 60 psig (414kPa) and 77°F (25°C).
Further conditions on the above
are 250 ppm TDS and a 30.6%
recovery rate. Production rate and
TDS reduction figures are for a new
Membrane that has been rinsed for
24 hours. The production rate of a
new Membrane can decrease by 10%
per year or more, depending upon the
scaling and fouling tendencies of the
Feed Water.
Measured at 50 psi, 77° ± 2°F,
2
and 717 mg/l TDS per NSF/ANSI
Standard 58.
Version 2.1I
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