4
OFPSYS EU_IOM_IT_W_UK_01_21_Rev0
Watts Water Technologies, Inc.
UK
The descriptions and photographs contained in this product specification sheet are supplied by way of information only and are not binding. Watts Industries reserves the right to carry
out any technical and design improvements to its products without prior notice. Warranty: All sales and contracts for sale are expressly conditioned on the buyer’s assent to Watts terms
and conditions found on its website at www.wattswater.eu. Watts hereby objects to any term, different from or additional to Watts terms, contained in any buyer communication in any
form, unless agreed to in a writing signed by an officer of Watts.
Notice
* Systems using OneFlow
®
technology are effective at control-
ling limescale formation inside the plumbing system at influ-
ent hardness levels up to 427mg per liter (28.8°D, 51.3°F) of
calcium carbonate. Due to variances in water chemistry,
427mg per liter is a recommended hardness maximum due
to potential aesthetic issues related to soft scale residue
formation outside the plumbing system. Testing should be
performed to determine proper application where hardness
levels exceed 427mg per liter.
** Just as with conventional water softening media, OneFlow
®
media needs to be protected from excess levels of certain met-
als that can easily coat the active surface, reducing its effective-
ness 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.
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 mg/l limitation is for aesthetic purposes.
†† All other water contaminants must meet the requirements of
the local water control agency of each specific country where
OneFlow
®
is sold and installed. Specific Mineral and Metal
Maximum Contaminants Level’s, identified in the above Feed
Water Chemistry Requirements list, supersedes those require-
ments. Water known to have heavy loads of dirt and debris may
require a pre-filtration prior to OneFlow
®
.
3. Installation
3.1
Installation Precautions
The OneFlow
®
+ EU 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 upflow working operation of the system
requires a lot of space to allow the media 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 conven-
tional systems. Must be installed in VERTICAL POSITION.
•
Please see the “Notice” about “Certain Contaminants”
section on page 3.
•
Please see the note about “Using the OneFlow
®
+ EU
system with other water treatment equipment on page 2.
•
This system is designed for residential applications only.
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 bypass valve.
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.
•
Support inlet and outlet plumbing in some manner (use
pipe hangers) to keep the weight off of the bypass
fittings.
•
Do not use on water that is microbiologically unsafe or of
unknown quality.
Contaminant Treatment
Sediment / Particulates:
20 microns with a dirt holding
capacity up to 1 kg (2.2 lbs.)
Chlorine Reduction:
189270.6 liters (50,000 gallons)†
@ 3 gpm (11.34 lpm)
Scale Prevention:
Up to 3 years
† according to lab test of carbon block manufacturer.
3.2
Installation Instructions
New system comes with the cartridges and outlet connector
pre-installed. Installer should verify this prior to installation.
How to install your OneFlow
®
+ EU system can also be found at:
www.watts-oneflow.com
Notice
Please confirm that all items required are included in the kit
ready for assembly and remove from carton.
1. The system can stand upright in the desired location without
the need to affix to a wall with a mounting bracket. However,
a mounting bracket is included as a separate part (Item 1).
2. Place the system in the desired location. Make sure that the
location is level and sturdy enough to support the weight of
the wetted system.
