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Feed Water Chemistry Requirements
pH
Hardness (maximum)
Water Pressure
Temperature
Free Chlorine
Iron (maximum)
Manganese (maximum)
Copper
Oil & H2S
Total Polyphosphates
Silica (maximum)
TDS
NOTICE
* Systems using OneFlow
ling lime-scale formation inside the plumbing system at influ-
ent hardness levels up to 75 grains per gallon (1282 mg/l)
CaCO3 of 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 outside 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 mg/L and 0.05 mg/L, respectively.
WARNING
!
*** Pursuant to the EPA drinking water standards, the cop-
per concentration permitted is up to 1.3 ppm. Typically
originating from new copper plumbing, high levels of cop-
per 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 concentra-
tion 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
6.5-8.5
30 grains (513 ppm CaCO3) *
15 psi to 90 psi (1.03 bar to 6.2 bar)
40° F to 100° F (5°C to 37.8°C)
<2 ppm
0.3 ppm **
0.05 ppm **
1.3 ppm***
Must be Removed Prior to OneFlow
< 3.0 ppm
20 ppm †
1500 mg/l ††
technology are effective at control-
®
.
®
WARNING
!
• Connect system to cold water supply only. Water temperature
cannot exceed 100°F/37.8°C.
• System must be installed in a vertical, upright and level position.
• OneFlow
systems must not be used in conjunction with
®
polyphosphate or any other scale inhibitor.
• Do not use with water that is microbiologically unsafe or of
unknown quality without adequate disinfection before or after
the system.
WARNING
!
Installation Precautions
• Do NOT install system on line pressure above 100psi.
• Do NOT install system on HOT water line. Failure to limit line
temperature to 100°F/37.8°C may result in housing failure
and damage.
• Do NOT install the system backwards with the feed water
line connected to the outlet.
• Do NOT use liquid pipe compounds for fitting connections.
USE two to three wraps of Teflon® tape.
• Do NOT solder plumbing connections attached to filter
®
housing or inlet valve. Inlet valve and filter housing will be
damaged by high temperature.
• Do NOT allow system to freeze. Turn off water supply to
housing and drain housing if temperature falls below 32°F.
• Do NOT install system in direct sunlight or where system
is exposed to harsh chemicals or may be subjected to being
struck by moving equipment, carts, mops or any other item
that may cause damage.
• ALLOW a minimum of 3" under the housing to allow for
filter replacement.
• IF water hammer is evident, install water hammer arrestors
before the OneFlow
• Do NOT overtighten fitting connections into inlet valve or
housing outlet.
• Always back-up valves and fittings with a wrench when
installing a fitting to avoid turning the valve.
• Do NOT install the unit behind equipment where it may be dif-
ficult to access the system for filter replacement.
Position the OneFlow
of flow through the OneFlow
this in mind when determining installation location. Do NOT
mount the OneFlow
do not mount the system above any device or area that would
be adversely affected by water.
2 2
unit.
®
unit in a suitable location. The direction
®
unit is always left to right; keep
®
system near any source of heat. Also,
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