Installation, Maintenance, and Repair Manual
Series LF007 Model IOT
Double Check Valve Assemblies
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, spec-
ifications, 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-LF007-IOT
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 other repair kits and service parts, refer to the Backflow
Prevention Products Repair Kits & Service Parts price list
PL-RP-BPD 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 is designed for installation at referenced cross-
connections to prevent the backflow of polluted water into the
potable water supply. Model IOT (available only with NRS gate
valves) includes factory-installed pressure sensors on three test
cocks (No. 2, No. 3, and No. 4).
LF007-NRS-IOT
NOTICE
Use of integrated pressure sensors on and monitoring connection
kit with IOT models 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
power issues.
NOTICE
For IOT models, an add-on monitoring connection kit is required
to collect psi measurements from the integrated pressure sen-
sors. Without the connection kit, the pressure sensors are passive
components and will not communicate with any other device.
For BMS only. (The connection kit and pressure sensors are
also available for existing installations. See “Add-on Monitoring
Connection Kits,” for ordering details.)
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