2
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/38°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
®
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 dif-
ficult 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 left to right; keep
this in mind when determining installation location. Do NOT
mount the OneFlow
®
system near any source of heat. Also,
do not mount the system above any device or area that would
be adversely affected by water.
WARNING
!
• Connect system to cold water supply only. Water tempera-
ture cannot exceed 100°F/38°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.
***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 passivated
for a minumum 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 apply-
ing 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 Re-
quirements, 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
15 psi to 90 psi (1.03 bar to 6.21 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****
WARNING
!
Feed Water Chemistry Requirements
NOTICE
* Systems using OneFlow
®
technology are effective at control-
ling lime-scale formation inside the plumbing system at influent
hardness levels up to 75 grains per gallon (513 ppm 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.
