Installation, Operation and
Maintenance Manual
Introduction
The OneFlow
®
+ system is an economical and
environmentally 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
crystallization to attract dissolved hardness minerals and
convert them into harmless, inactive microscopic crystal
particles.
These crystals stay suspended in the water and have a
greatly reduced ability to react and attach to surfaces like
dissolved hardness does. They eventually find their way
to a drain. The system requires very little maintenance, no
backwashing, no salt and no electricity.
The OneFlow
®
+ system is not a water softener. It does
not add chemicals to the water. It is a scale prevention
device with proven third party laboratory test data and
years of successful residential installations. 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 mounting surface the OneFlow
®
+ will be installed on
is clean, level and strong enough to support the weight of the
system while in operation.
• 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
®
+ OFPSYS
system 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
OneFlow
®
+ Salt-Free Scale
Prevention and Water Filtration
System
Model OFPSYS
