Installation, Operation and
Maintenance Manual
OneFlow
®
+ Salt-Free Scale
Prevention and Water Filtration
System
Model OFPSYS
Introduction
The OneFlow
®
+ system is an economical and environ-
mentally friendly physical water treatment technology that
protects pipes, extends the life of appliances, and provides
better tasting water through filtration. The OneFlow
®
+
system is a dual cartridge-based system with a radial flow
20 micron carbon block cartridge which reduces sediment,
chlorine taste and odor, and an integrated OneFlow
®
scale
prevention cartridge.
The OneFlow
®
+ system uses template assisted crystal-
lization to attract hardness minerals and convert them into
harmless, inactive microscopic crystal particles.
These crystals stay suspended in the water and are passed
to drain. The system requires very little maintenance, no
backwashing, no salt and no electricity. Typical hardness
problems, especially build-up of scale in heating elements,
pipes, water heaters, boilers and on fixtures, are reduced.
The OneFlow
®
+ system is not a water softener. It does not
add chemicals. It is a scale prevention device with proven
third party laboratory test data and years of successful
commercial, residential and food service applications. The
OneFlow
®
+ system is the intelligent scale solution and is a
great salt-free alternative to water softening (ion exchange)
or scale sequestering devices.
• Use only lead-free solder and flux for sweat-solder connections,
as required by state, province and federal codes.
• Handle all components of the system with care. Do not drop,
drag or turn components upside down.
• Be sure the floor under the system is clean, level and strong
enough to support the unit if the OneFlow
®
+ system is situated
on the floor.
• Install the system in a protected area.
• Do not attempt to treat water over 100°F (38°C) with the system.
• Always connect the system to the main water supply pipe before
the water heater.
• Do not expose the system to freezing temperatures. Water
freezing in the system causes equipment damage.
• Do not install in direct sunlight. Ultraviolet rays from the sun
may cause damage.
• Do not use on water that is microbiologically unsafe or of
unknown quality.
IOM-OFPSYS
OFPSYS
If you are unsure about installing your Watts OneFlow
®
+ system
contact a Watts representative or consult a professional plumber.
You are required to thoroughly read all installation instructions
and product safety information before beginning the installation
of this product.
FAILURE TO COMPLY WITH PROPER
INSTALLATION AND MAINTENANCE INSTRUCTIONS
COULD RESULT IN PRODUCT FAILURE WHICH CAN CAUSE
PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH.
Watts is not responsible for damages resulting from improper
installation and/or maintenance. Local building or plumbing codes
may require modifications to the information provided. You are
required to consult the local building and plumbing codes prior to
installation. If this information is not consistent with local building or
plumbing codes, the local codes should be followed.
Save manual for future reference.
Refer to the enclosed for operating parameters to ensure proper
use with your water supply.
WARNING
!
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.
OneFlow
®
+
is
certified by the Water
Quality Association
(WQA) to NSF / ANSI
Standard 372 for
lead free.
Table of Contents
Pages
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
OneFlow
®
+ Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Equipment Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Feed Water Chemistry Requirements. . . . . . . . . . . . . . . . . . . . . . 3
Contaminant Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Notes to the Installer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
OneFlow
®
+ System Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Changing the Filter Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Note to the Home Owner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
