2
Teflon
®
is a registered trademark of E.I. Dupont de Nemours
& Company.
Installation Precautions
• Do NOT install system on line pressure above 90psi.
• Do NOT install system on HOT water line. Failure to limit
line temperature to 100°F 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 40°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
®
unit.
• 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 difficult to access the system for filter replacement.
• Position the OneFlow
®
unit in a suitable location.
• The direction of flow through the OneFlow
®
unit is always
through the inlet first; keep this in mind when determining
installation location.
• Do NOT mount the OneFlow
®
system near any source of
heat.
• DO NOT mount the system above any device or area that
would be adversely effected by water.
WARNING
!
• Do not discard this manual after installation. This manual
contains important operation, maintenance and precaution-
ary information. Please present this manual to user/operator/
owner after installation.
• It is strongly encouraged that you read this manual before
installing the system to ensure the best possible installation.
• Installation must conform to all local and state plumbing
codes and regulations.
• Notice to user/operator/owner: Please retain this manual for
future reference for parts, maintenance or troubleshooting.
• It is recommended that all personnel responsible for operation
and maintenance of this product read the precautions,
operation and maintenance sections of this manual.
NOTICE
NOTICE
* Systems using OneFlow
®
technology are effective at con-
trolling lime-scale formation inside the plumbing system at
influent hardness levels up to 30 grains per gallon (513 ppm
CaCO3) of calcium carbonate. Due to variances in water
chemistry, 30 grains per gallon is a recommended hard-
ness 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.
*** Pursuant to the EPA drinking water standards, the copper
concentration permitted is up to 1.3 ppm. Typically originat-
ing from new copper plumbing, high levels of copper can
foul OneFlow media. New Copper lines need to be pas-
sivated 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 cop-
per, 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.
WARNING
!
Feed Water Chemistry Requirements
pH
6.5-8.5
Hardness (maximum)
30 grains (513 ppm CaCO3) *
Water Pressure
15 psi to 90 psi (1.03 bar to 6.2 bar)
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
1.3 ppm***
Oil & H2S
Must be Removed Prior to OneFlow
Total Phosphates
< 3.0 ppm
Silica (maximum)
20 ppm †
TDS
1500 mg/l ††
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
®
.
