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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

Summary of Contents for FEBCO 860 Series

Page 1: ...s 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...

Page 2: ...ng assemblies of both check valves and open the inlet shutoff valve to allow sufficient flow of water through the assembly Clear all sand debris and other particles from the line If debris in the wate...

Page 3: ...semblies are disassembled and reassembled in the same manner To service the checks replace the check modules with new ones by using check module assembly kits available from FEBCO Or replace the rubbe...

Page 4: ...e from the relief valve assembly may not indicate a relief valve failure Water is discharged from the relief valve when the mainline check valves become fouled with foreign debris For more information...

Page 5: ...may become folded or creased if the internal assembly is restricted while tightening the cylinder 7 Replace the O ring Item 20 in the relief valve cover Properly seat the round bead on the large diaph...

Page 6: ...certain conditions relief valves can discharge water at rates greater than the air gap drain capacity 2 For an indoor installation locate the assembly near a floor drain sized to adequately handle dis...

Page 7: ...Seat Ring RV 1 12 1 Gasket Ring RV 1 13 Spring RV 1 14 Seat Disc RV 1 15 Diaphragm RV 1 16 Outer Diaphragm RV 1 17 Small Piston RV 1 17 1 Round HD Screw RV 1 17 2 Washer RV 1 17 3 Hex Nut RV 1 18 Cyl...

Page 8: ...1 1 4 2 32 50 Both checks Kit includes Items 2 2 3 1 qty 2 and 5 qty 2 Relief Valve Rubber Kit 905345 ALL 1 2 3 4 15 20 905345 ALL 1 25 905346 ALL 1 1 4 2 32 50 Kit includes Items 12 12 1 14 15 16 18...

Page 9: ...se the outlet ball valve After clearing the system with air partially open the outlet ball valve 7 Leave all drain valves test cocks and ball valves in the half open half closed position for the winte...

Page 10: ...line pressure variations causing relief valve to discharge Eliminate or reduce pressure variations by installing a soft seated spring loaded check on upstream side of device Pressure surges water hamm...

Page 11: ...capabilities to the relief valve of an existing installation in a BMS configuration For Cellular Communication ORDERING CODE ADD ON RETROFIT KIT DESCRIPTION 88009432 FP FBF CFS Cellular Flood Sensor C...

Page 12: ...damaged if this product does not work properly other costs resulting from labor charges delays vandalism negligence fouling caused by foreign material damage from adverse water conditions chemical or...

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