Watts FEBCO 860 Series Installation, Operation And Maintenance Manual
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Watts FEBCO 860 Series Installation, Operation And Maintenance Manual

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Installation, Operation, and Maintenance Manual
Series 860, LF860
Reduced Pressure Zone Assemblies
⁄
" - 2"
1
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.
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
IOM-F-860
860-FS

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Summary of Contents for Watts FEBCO 860 Series

  • Page 1: Table Of Contents

    Watts is not responsible for the failure of alerts due to connectivity ® or power issues.

  • Page 2: How It Operates

    How It Operates The FEBCO Series 860 Reduced Pressure Zone backflow preventer assembly consists of two independently operating, spring loaded check valves with a pressure differential relief valve located between the two checks. The pressure drop across the first check valve is approximately 7.0 psid with no flow.
  • Page 3 Check Module Disassembly Check Module Seal Replacement The complete list of items is included in the "Parts" section. Both check assemblies are disassembled and reassembled in the same manner. To service the checks, replace the check modules 1. Slowly close the inlet and outlet ball valves. Bleed residual with new ones by using check module assembly kits available from pressure by opening test cocks No.
  • Page 4 Check Module Reassembly 6. Check for external leaks and repair, if necessary. Slowly open Reverse the disassembly procedure to reassemble the unit along the outlet ball valve. with the following special instructions. 7. Test the assembly in accordance with locally approved methods. 1.
  • Page 5 5. Before installing the new internal relief valve assembly module, 7. Replace the O-ring (Item 20) in the relief valve cover. Properly apply a thin coating of the supplied lubricant to both sides of one seat the round bead on the large diaphragm in the counterbore slip ring (Item 18.1) and insert it into the top of the relief valve of the relief valve cover.

  • Page 6: Testing

    Testing All mechanical devices should be inspected on a regular basis to ensure proper functioning. The assembly should be tested at the time of initial installation, after servicing or maintenance, and at least annually thereafter. Acceptable test procedures are published by Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (USC), American Water Works Association (AWWA), American Society of Sanitary Engineering...

  • Page 7: Parts

    Parts Call customer service if you need assistance with technical details. ITEM DESCRIPTION QUANTITY Body Tailpiece O-Ring Cover O-Ring Seat O-Ring Inlet Ring " & 1 ") Poppet Seat Disc Disc Retainer Round HD Screw Spring (1st Check Spring) Spring (2nd Check Spring) Guide Retainer Spacer...

  • Page 8: Repair Kits

    Repair Kits Before contacting the local FEBCO parts distributor, write down the following information to have on hand when placing the order. The serial number located on the assembly ID plate can assist in ordering the proper kit. • Item number and name. Locate the number and name of the item in the "Parts"...

  • Page 9: Freeze Protection

    Freeze Protection The freeze protection backflow prevention assembly may be subject to damage if the internal water is allowed to freeze. The unit must be protected from freezing using a heated enclosure, insulation using heat tape, or other suitable means. The unit must always be accessible for testing and maintenance.

  • Page 10: Troubleshooting

    Troubleshooting Check Procedure with Differential Pressure Gauge CHECKLIST READING PROBLEM Check differential across check valve No. 1 2 to 3 psid Leak in check valve No. 1 or No. 2 6 to 8 psid and steady Malfunctioning pressure relief valve 2 to 7 psid and steady Inlet pressure fluctuating Check differential across check valve No.

  • Page 11: Add-On And Retrofit Sensor Connection Kits

    Add-on and Retrofit Sensor Connection Kits For Building Management Systems ORDERING CODE ADD-ON/RETROFIT KIT DESCRIPTION 88009431 FP-FBF-BMS Includes sensor activation module with cable, power adapter, and ground wire. BMS Flood Sensor Connection Kit Use this kit to activate the flood sensor and enable flood detection capabilities Series 860 Small, LF860 Small on the relief valve of a new installation in a BMS configuration.
  • Page 12 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT. USA: T: (800) 767-1234 • FEBCOonline.com Canada: T: (888) 208-8927 • FEBCOonline.ca Latin America: T: (52) 55-4122-0138 • FEBCOonline.com IOM-F-860 2332 1915983 © 2023 Watts...

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