Introduction
The Watts
®
OneFlow
®
Anti-Scale System provides protection from
scale formation on internal plumbing surfaces. The OneFlow
®
sys-
tem can be installed at the point of entry to a building 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
®
prevents scale by transforming the normal dissolved
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
®
is not a water softener or a chemical additive (like anti-
scalants or sequestrants). It is a scale prevention device with proven
third party laboratory test data and years of successful residential
and commercial installations. OneFlow
®
is the one water treatment
device that effectively provides scale protection and is a great salt-free
alternative to water softening (ion exchange) or scale sequestering
chemicals. Laundry and warewashing chemistry will likewise require
adjustments.
OneFlow
®
Benefits
• Chemical-free scale prevention and protection – converts
hardness minerals to harmless, inactive microscopic crystals
making OneFlow
®
an effective alternative technology to
a water softener for the prevention of scale due to water
hardness
• Virtually maintenance free - no control valve
• Uses environmentally friendly technology by using no salt
or other chemicals to constantly add, no electricity and
no wastewater
• Improves efficiency of all water using appliances – both hot**
and cold
• Simple sizing & installation – all you need to know is pipe
size and the peak flow rate
• Safe for landscaping and lawn watering, no need for costly
bypass plumbing
• Compatible with all on-site and community wastewater
treatment systems
• Perfect system for towns or communities where water
softeners are banned or restricted
Installation, Operation and Maintenance Manual
Model OF1354-30TM, OF1465-50TM and
OF1665-75TM OneFlow
®
Anti-Scale Systems
Chemical-Free, Salt-Free Scale Prevention
IOM-OF1354TM_OF1465TM_OF1665TM
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.
Do not use with water that is microbiologically unsafe or of
unknown quality without adequate disinfection before or after
the system.
WARNING
!
You are required to consult the local building and plumbing codes
prior to installation. If the information in this manual is not consis-
tent with local building or plumbing codes, the local codes should
be followed. Inquire with governing authorities for additional
local requirements.
WARNING
!
• For high-flow applications, install multiple tanks in parallel
• OneFlow
®
does not remove minerals or add sodium to the
water supply
• OneFlow can be installed as pre-treatment to commercial
reverse osmosis systems (contact your Watts Representative
for further details)
** For hot water applications where feed water temperature is
100°F – 140°F (38° – 60°C), please consult ES-OneFlow-
HotWater.
The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
Systems are tested and certified by WQA
against NSF/ANSI/CAN Standard 61 and
NSF/ANSI 372 for Lead Free compliance.
Tank base may vary from image shown
