Installation, Maintenance, and Repair Manual
Series LF007
Double Check Valve Assembly
2½" – 3"
NOTICE
For Australia and New Zealand, line strainers should be installed
between the upstream shutoff valve and the inlet of the backflow
preventer.
Watts product specifications in U.S. customary units and metric
are approximate and are provided for reference only. For precise
measurements, contact Watts Technical Service. Watts reserves
the right to change or modify product design, construction, speci-
fications, or materials without prior notice and without incurring
any obligation to make such changes and modifications on Watts
products previously or subsequently sold.
RP/IS-LF007L
Testing
For field testing procedure, refer to the Watts installation sheets
IS-TK-DL, IS-TK-9A, IS-TK-99E and IS-TK-99D at
www.watts.com.
For technical assistance, contact your local Watts representative.
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.
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 the
information provided here is not consistent with local building
or plumbing codes, the local codes should be followed.
This product must be installed by a licensed contractor in
accordance with local codes and ordinances.
WARNING
!
Need for Periodic Inspection/Maintenance:
This product
must be tested periodically in compliance with local codes, but
at least once per year or more as service conditions warrant.
All products must be retested once maintenance has been
performed. Corrosive water conditions and/or unauthorized
adjustments or repair could render the product ineffective for the
service intended. Regular checking and cleaning of the product’s
internal and external components helps assure maximum life and
proper product function.
WARNING
!
Series LF007 large-diameter backflow preventer is designed for
installation at referenced cross-connections to prevent the backflow
of polluted water into the potable water supply. Series LF007 Model IOT
includes factory-installed pressure sensors.
LF007-NRS-IOT
NOTICE
Use of integrated pressure sensors and monitoring connection
kit with Model IOT does not remove the need to comply with all
required instructions, codes, and regulations related to installation,
operation, and maintenance of the backflow preventer.
Watts is not responsible for data transmission failures due to
connectivity issues, power outages, or improper installation.
NOTICE
An add-on monitoring connection kit is required to collect psi
measurements from the integrated pressure sensors. Without the
connection kit, the pressure sensors are passive components
that do not communicate with any other device. For BMS only.
(The connection kit and pressure sensors are also available for
existing installations. For ordering details, see “Add-on Monitoring
Connection Kits.”
