IOM-F-860
Installation, Operation, and Maintenance Manual
Series 860, LF860
Reduced Pressure Zone Assemblies
1
⁄2" – 2"
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.
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.
NOTICE
If an assembly is recommended where installation may be
problematic, the assembly must be protected and secured. Remove
the handles of shutoff valves to discourage tampering, or install a
protective enclosure to discourage vandals. When opting for an
enclosure, install the protective cover so that adequate clearance is
available for maintenance and testing. Consult local codes before
installing any type of protective enclosure.
Series 860 is designed to protect drinking water supplies from
dangerous cross-connections in accordance with national plumbing
codes and water authority requirements for non-potable service
applications. The Lead Free series are used in potable drinking
water systems where code mandates protection from backpressure
and backsiphonage conditions. Series 860 Small and LF860 Small
each include a flood sensor on the relief valve to detect excessive
discharge.
860-FS
NOTICE
An add-on connection kit is required to activate the flood sensor.
Without the connection kit, the flood sensor is a passive component
and has no communication with any other device. (A retrofit sensor
connection kit is also available for existing installations. See “Add-on
and Retrofit Sensor Connection Kits,” for ordering details.)
NOTICE
Use of the flood sensor does not replace the need to comply with all
required instructions, codes, and regulations related to installation,
operation, and maintenance of this product, including the need to
provide proper drainage in the event of a discharge.
Watts
®
is not responsible for the failure of alerts due to connectivity
or power issues.
Contents
How It Operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Air Gap Drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Repair Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Add-on and Retrofit Sensor Connection Kits . . . . . . . . . . . . . . . . . . . . 11
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General
