Model OF1465, OF1665
OneFlow
Chemical-Free, Salt-Free Scale Prevention
Introduction
The Watts OneFlow® Anti-Scale System provides protection from
scale formation on internal and external plumbing surfaces. The
OneFlow
ing to treat both hot and cold water, or it can be located directly
before a water heater, boiler, or other water using device that
requires protection from hard water.
OneFlow
hardness minerals into undissolved crystal microparticles. These
crystals stay suspended in the water and have a greatly reduced
ability to react and attach to surfaces like dissolved hardness
does. Therefore the problem of internal buildup of scale in pipes,
water heaters and on fixtures and glass is greatly reduced.
OneFlow
antiscalants, sequestrants, etc.. will most likely have to be changed
to be compatible with OneFlow
washing chemistry will likewise require adjustments.
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Anti-Scale Systems
system can be installed at the point of entry to a build-
prevents scale by transforming the normal dissolved
is not a water softener – Water treatment chemistry (e.g.
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treated water. Laundry and ware-
IOM-OF1465_1665
OneFlow® Benefits
• Chemical free scale prevention. Cost savings and environmental
benefits.
• Virtually maintenance free. No salt bags or other chemicals to
buy, transport and store.
• No electricity, no wastewater, completely self-contained.
• Improves the efficiency of water-using appliances.
• Simple installation – no electrical and drain hookup.
• Safe for landscaping and lawn watering. No need for costly
bypass plumbing.
• Compatible with all on-site and community wastewater treatment systems.
• Not subject to water softener restrictions and “bans”.
• OneFlow
drink and is well suited for use in food and beverage preparation.
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treated water has no added sodium, is safe to
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Important note about iron,
manganese and copper in the
water supply
Iron and Manganese
Just as with conventional water softening media, OneFlow® 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. Copper should be less than 1.3 mg/L.
Copper
Copper usually originates from new copper plumbing upstream
of the OneFlow
waiting 3-4 weeks before placing the system in operation. This
will allow the copper surfaces to be fully flushed and develop a
natural protective surface. To further minimize any problem with
excess copper, avoid applying excess flux on the inner surfaces
of the pipe and to use a low-corrosivity water soluble flux listed
under the ASTM B813 standard. Once the plumbing connections are complete, place the OneFlow
to following the startup procedure and flush the plumbing for at
least 10 minutes.
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system. If this condition exists, we recommend
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system in bypass prior
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Installation Precautions!
• Do NOT install system on line pressure above 125psi.
• Do NOT install the system backwards with the feed water
line connected to the outlet.
• 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.
• IF water hammer is evident, install water hammer arrestors
before the OneFlow
• 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
the OneFlow
stall the system near any device or area that would be adversely
effected by water.
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system near any source of heat. Also, do not in-
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unit.
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unit in a suitable location. Do NOT install
System Overview
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Cautions!
• Do not let the system freeze. Damage to the tank 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 upflow, 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.
Notes to the Installer
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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 upflow 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.
• Because the OneFlow
the tank connections are opposite of what you’re used to.
• Please see the Important note about iron, manganese and
copper above.
• Please see the note about “Using OneFlow
treatment equipment” on the next page.
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system operates in the Upflow mode,
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with other water
Outlet - 2” PVC socket
Outlet Screen
Media Tank
Inlet Screen/Difffuser
2” Union (socket)
2” Elbow (street)
Inlet - 2” PVC socket
Using OneFlow® with other water treatment
equipment.
Due to the unique properties of OneFlow®, there are some
unique requirements for using OneFlow
tion or other forms of water treatment.
1. OneFlow
not install any filters after OneFlow
which scale prevention is required. POU filters, e.g. carbon or
RO are exempt from this requirement.
2. Do not apply phosphate or any other antiscalant either before
or after OneFlow
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must be the last stage in the treatment chain. Do
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in conjunction with filtra-
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or before any devices for
Equipment Specifications
OneFlow® systems are complete, self-contained,
loaded with media, and ready to use. A simple
inlet and outlet connection is all that is required
for installation. Please review operating pressures,
temperatures and water chemistry limitations to
ensure compatibility.
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Important Notes!
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NOTE: We recommend the installation of a dual-union ball-valve
on the inlet and outlet to isolate the tank for servicing.
NOTE: A full bypass should be installed so that the full service
flow can be routed around the system as needed for servicing.
NOTE: The OneFlow
which is opposite of a conventional softener. The inlet is on the
bottom, the outlet on the top.
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system operates in the Up-Flow mode
Specifications
Inlet Connection2” PVC Union with Socket.
Outlet Connection 2” PVC Socket
Temperature40° - 110°F
pH6.5 to 8.5
Ferrous Iron, Max* 0.3 mg/L
Manganese, Max* 0.05 mg/L
Copper, Max*1.3 mg/L
Water Pressure15 min, 100 max (PSI)
a
Mechanical Specifications
MODEL14651665
Dry Weight (lbs)5468
Service Weight (lbs)350420
Dimensions(nominal - inches)
a1717
b1416
c*7979
d6565
e*10.2510.50
* The overall height and the height of the inlet fitting varies due
to material variations and assembly tolerances. Please allow additional clearance above the tank for making connections.
Maximum Service Flow (gpm) vs. Water
Temperature
Continuous Duty Systems:
System40°F45°F50°F55°F60°F65°F70°F
14-6540444850505050
16-6545515659636975
Intermittent Duty Systems:
14-6550 GPM at all temperatures
16-6575 GPM at all temperatures
* Intermittent duty is defined as less than 2 hours of Maximum
Flow per 24 hour period. Higher Flow rates can be achieved by
combining systems in an array.
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Installation
Tighten the Tank Bushings
Tank bushing.
Rotate Clockwise
to tighten.
Lay the tank down and check the bushings
on the inlet and outlet (bottom and top) of the
tank. It is common for them to loosen during
shipment. Tighten the bushings with a strap
wrench as needed
Install Piping
Connect the inlet and outlet plumbing according to
your preferences and any applicable local codes.
Include sample/drain ports with hose-bibb connections on the inlet and outlet piping to facilitate
startup and service.
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Support the Piping
The full weight of the piping and
valves must be supported by unistrut, pipe hangers or other means.
The tank connections cannot support the weight of the piping. This
photo from a multi-tank system
installation shows properly supported
piping.
Start-Up
Connect a hose to the hose bibb on the
outlet of the tank. Run the hose to a drain.
Slowly / partially open the supply water
ball valve. Allow the tank to slowly fill with
water. When a steady stream of water appears at the drain, close the supply valve.
Open the inlet and outlet valves on the
system. Transfer the bypass valves from
Bypass to the Service position. Open
a nearby faucet downstream from the
OneFlow
Check for leaks. Repair as needed.
The system is now ready for service.
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system to relieve any air.
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Limited Warranty
Watts Regulator Company warrants its OneFlow® tank systems as follows:
• The OneFlow
• The OneFlow
ated in accordance with the instructions in the corresponding Installation and Operation Manual.
Watts Regulator Company warrants its OneFlow
• The OneFlow
shipment.
• OneFlow
operated in accordance with the instructions in the corresponding Installation and Operation Manual.
• Carbon replacement filter cartridges are not warranted to perform for any period of time because the service life of replacement carbon
filter cartridges varies significantly with local water conditions and volume.
Conditions
1. The OneFlow® system must be installed in applications with municipally supplied water adhering to EPA guidelines.
2. Any component failure must not result from abuse, fire, freezing or other acts of nature, violence, or improper installation.
3. Equipment must be installed and operated in compliance with the local plumbing codes and on an approved water supply.
4. Equipment is limited to use at water pressures and temperatures that do not exceed our published specifications.
5. Water supply must not exceed 2.0 PPM chlorine. For water supply exceeding 2.0 PPM chlorine, pretreatment is required.
(Please contact your water treatment specialist.)
6. Information, including model number, serial number, and date of installation, must be provided for any claims pertaining to equipment in
warranty.
7. Defective parts are subject to inspection by either Watts Regulator Company or any authorized representative before final commitment of
warranty adjustment is made.
8. Watts Regulator Company reserves the right to make changes or substitutions in parts or equipment with material of equal quality or value
and of then current production.
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tank system is warranted to be free of defects in materials and workmanship for 5 years from the date of original shipment.
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media is warranted for performance for a period of 2 years from the date of the original installation when installed and oper-
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cartridge systems as follows:
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cartridge system is warranted to be free of defects in materials and workmanship for 1 year from the date of original
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cartridges are warranted for performance for a period of one year from the date of original installation when installed and
Limitations
Our obligation under this warranty with respect to the tank or valve is limited to furnishing a replacement for, or at our option, repairing any
part or parts to our satisfaction that prove defective within the warranty period stated above. Such replacement parts will be delivered to the
owner F.O.B. nearest factory, at no cost, excluding freight and local labor charges, if any.
Our obligation under this warranty with respect to the OneFlow
years from date of original installation. Such replacement media will be delivered to the owner F.O.B. nearest factory, at no cost, excluding
freight and local labor charges, if any. Damage to the media due to chlorine, other oxidizers or fouling caused by local water conditions or
any other operation outside of the limits shown under Specifications, is not covered by this warranty.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY WATTS REGULATOR COMPANY
WITH RESPECT TO THE PRODUCT. WATTS REGULATOR COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED. WATTS
REGULATOR COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described under this warranty shall constitute the sole and exclusive remedy for breach of warranty, and Watts Regulator
Company shall not be responsible for any incidental, special or consequential damages, including without limitation, freight, handling, lost
profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from
labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any
other circumstances over which Watts Regulator Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication or improper installation of the product.
Some states do not allow limitations on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This warranty gives you specific legal rights, and
you may have other rights that vary from state to state. You should consult applicable state laws to determine your rights. SO FAR AS IS
CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE APPLICABLE
WARRANTY PERIODS STATED ABOVE.
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media will be limited to furnishing a replacement for the media within two
A Watts Wa ter Technologies Company
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca