7
*** Pursuant to the EPA drinking water standards, the copper
concentration permitted is up to 1.3 ppm. Typically originating
from new copper plumbing, high levels of copper can foul
OneFlow media. New Copper lines need to be passivated
for a minimum of 4 weeks before placing unit into service.
For applications with copper concentration greater than 1.3
ppm, please consult Watts Water Quality Technical Service.
To further minimize any problem with excess copper, avoid
applying excessive flux on the inner surfaces of the pipe
and use a low-corrosivity water soluble flux listed under the
ASTM B813 standard.
NOTICE
†
OneFlow media does not reduce silica scaling. While silica
tends to have a less significant effect on scale formation than
other minerals, it can act as a binder that makes water spots
and scale residue outside the plumbing system difficult to
remove. This 20 ppm limitation is for aesthetic purposes.
††
All other contaminants must meet the requirements of the
USEPA Safe Drinking Water Act. Specific Mineral and Metal
MCL’s, identified in Watts published Feed Water Chemistry
Requirements, supersedes the USEPA SDWA.
Water known to have heavy loads of dirt and debris may require
pre-filtration prior to OneFlow.
pH
6.5-8.5
Hardness (maximum)
30 grains (513 ppm CaCO3)*
Water Pressure
15psi to 90psi (1.03 bar to 6.2 bar)
Water Temperature
40°F to 100°F (5°C to 38°C)
Free Chlorine
<2 ppm
Iron (maximum)
0.3 ppm**
Manganese (maximum)
0.05 ppm**
Copper (maximum)
1.3 ppm***
Oil & H2S
Must be Removed Prior to OneFlow
Total Phosphates
< 3.0 ppm
Silica (maximum)
20 ppm
†
TDS
<1500 mg/L
††
Min/Max Ambient Temperature
34°F to 120°F (1°C to 48°C)
Maximum Humidity
75%
Power Supply Input Voltage/
Frequency
115 VAC / 60Hz
Power Supply Output Voltage
12 VDC
Power Supply Output Current
.4 amps
Maximum Altitude
2,000 meters above sea level
Wi-Fi Signal Type
2.4 GHz
WARNING
!
Feed Water Chemistry Requirements and
Operating Conditions
NOTICE
Not for use on closed loop systems.
* Systems using OneFlow technology are effective at controlling
limescale formation inside the plumbing system at influent hard-
ness levels up to 30 grains per gallon (513 ppm) as calcium
carbonate. Due to variances in water chemistry, 30 grains per
gallon is a recommended hardness maximum due to potential
aesthetic issues related to soft scale residue formation out-
side of the plumbing system. Testing should be performed to
determine proper application where hardness levels exceed 30
grains per gallon.
** Just as with conventional water softening media, OneFlow
media needs to be protected from excess levels of certain
metals that can easily coat the active surface, reducing its
effectiveness over time. Public water supplies rarely, if ever,
present a problem, but if the water supply is from a private
well, confirm that the levels of iron (Fe) and manganese (Mn)
are less than 0.3 ppm and 0.05 ppm, respectively.
