3
Contaminant Treatment
Sediment / Particulates:
20 microns with a dirt holding
capacity up to 2.2 lbs (1 kg)
Chlorine Reduction:
50,000 gallons (189,000 liters)
†
@ 3
gpm (11.34 lpm)
Scale Prevention:
Up to 3 years
†
according to lab test of carbon block manufacturer
Feed Water Chemistry Requirements
NOTICE
CAUTION
!
• Do not let the system freeze. Damage to the housing may
result.
• System must be operated in a vertical position. Do not lay
it down during operation. The system may be placed in any
position for shipping and installation but must be operated
in the vertical position.
• Place the system on a smooth, level surface. Because the
system operates in an UP-Flow, fluidized bed mode, having
a level surface is more important than with a softener or
media filter.
• A bypass valve should be installed on every system to
facilitate installation and service.
• Observe all local plumbing and building codes when
installing the system.
• All new copper pipe and fittings used in the installation
of this system should be allowed to self passivate, under
normal operation and water flow, for a period of 4 weeks
minimum before placing the unit into service.
• If making a soldered copper installation, do all sweat
soldering before connecting pipes to the system’s threaded
inlet and outlet plastic plumbing adapters. Torch heat will
damage plastic parts.
• When turning threaded pipe fittings onto plastic fittings, use
care not to cross-thread.
• Use PTFE tape on all external pipe threads. Do not use pipe
joint compound.
• The complete weight of the plumbing system must be
supported by pipe hangars or other means.
• Do not use on water that is microbiologically unsafe or of
unknown quality.
Notes to the Installer
The OneFlow
®
+ system differs from a conventional softener or
media filter in a number of key respects.
• The system is light and only partially filled with media. This is
normal. The UP-flow operation of the system requires a lot
of freeboard to allow the bed to fully fluidize.
• The system has no underbed so you can tip the system
over without any fear of upsetting the media. This makes
transportation and installation much easier than conventional
systems. System must be installed in VERTICAL POSITION.
• Please observe all Feed Water Chemistry Requirements and
all related NOTICES and WARNINGS on page 3.
• Please see the note about “Using OneFlow
®
+ System with
Other Water Treatment Equipment” on page 2.
• This system is designed for residential applications only.
NOTICE
pH
6.5-8.5
Hardness (maximum)
30 grains (513 ppm CaCO3)*
Water Pressure
10psi to 90psi (0.69 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 (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
††
NOTICE
* Systems using OneFlow
®
technology are effective at
controlling lime-scale formation inside the plumbing system
at influent hardness 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 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 ppm and 0.05 ppm, respectively.
*** 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
®
.
WARNING
!
Filter Cartridge Replacement Frequency
Filter Cartridge
Replacement Frequency
Radial Flow Carbon Block
Replace Annually
OneFlow
®
Scale Prevention Cartridge
Replace Every 3 Years
NOTICE
Replacement frequency listed above are maximum life expectancies.
Filter replacement may be required sooner based on water
quality and application variables.
