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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. If 

installed on a fire suppression system, all mechanical checks, 

such as alarms and backflow preventers, should be flow tested 

and inspected in accordance with NFPA 13 and/or NFPA 25. 

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 components helps assure maximum life and 

proper product function.

WARNING

!

WARNING

!

The installation and maintenance of backflow assemblies should 

be performed by a qualified, licensed technician. Failure to do 

so may result in a malfunctioning assembly.

IS-F-860RP/RPDA

Installation, Maintenance, and Repair Manual

Series LF860 Large and LF866

Reduced Pressure Zone Assemblies
Reduced Pressure Detector Assemblies
2

1

2

" – 10"

Series LF860 and LF866 each include a sensor on the relief 

valve to detect excessive discharge and trigger notification of a 

potential flood event.

LF860-OSY with Flood Sensor

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.

NOTICE

 

For Australia and New Zealand, line strainers should be installed 

between the upstream shutoff valve and the inlet of the backflow 

preventer.

Fittings such as end connectors intended to join alternative pipe 

systems made from other materials (such as plastics) shall  

also conform to the relevant dimensional and performance 

requirements of the appropriate Australian, New Zealand, or joint 

Australian–New Zealand Standard for the alternative pipe system.

NOTICE

 

An add-on connection kit is required to activate the flood  

sensor. Without the connection kit, the flood sensor is a passive 

component that does not communicate 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 

issues, power outages, or improper installation.

Summary of Contents for LF866 Series

Page 1: ...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 Ke...

Page 2: ...FLOW Horizontal Installation Shown with strainer Horizontal Installation Top view shown with strainer 18 min Refer to Local Codes 12 min Refer to Local Codes 6 min Refer to Local Codes Typical Install...

Page 3: ...f valve of a new installation linked to a BMS controller not included 88009415 FP RFK FBF BMS CFS 21 2 10 BMS Sensor Retrofit Connection Kit Series LF860 Large LF866 LF880V LF886V Sizes 2 to 10 Includ...

Page 4: ...aged 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 any...

Page 5: ...res graves ou la mort Conservez ce manuel pour r f rence ult rieure LA S CURIT AVANT TOUT Les s ries LF860 et LF866 comprennent chacune un capteur sur la soupape de d charge pour d tecter une vacuatio...

Page 6: ...passe pas le test sur le terrain cela est tr s probablement d un clapet antiretour encrass Ceci n est pas couvert par la garantie de l usine Les couvercles de vanne doivent tre retir s et les si ges...

Page 7: ...llation avec contr leur BMS non inclus 88009415 FP RFK FBF BMS CFS 21 2 10 Trousse de connexion de mise niveau de capteur BMS S rie LF860 Grand LF866 LF880V LF886V Tailles 2 po 10 po 6 3 cm 24 4 cm Co...

Page 8: ...e pas correctement autres co ts aff rents aux frais de main d uvre de retards de vandalisme de n gligence d engorgement caus s par des corps trangers de dommages caus s par des propri t s de l eau d f...

Page 9: ...inundaci n ADVERTENCIA Lea este manual ANTES de utilizar este equipo No leer ni seguir toda la informaci n de seguridad y uso puede provocar la muerte lesiones f sicas graves da os a la propiedad o al...

Page 10: ...onamiento y la ausencia de fugas Si la v lvula no pasa la prueba de campo lo m s probable es que se deba a una v lvula de retenci n contaminada Esto no est cubierto por la garant a de f brica Se deben...

Page 11: ...de detecci n de inundaciones en la v lvula de alivio de una nueva instalaci n conectada a un controlador BMS no incluido 88009415 FP RFK FBF BMS CFS 21 2 10 Kit de conexi n de retroadaptaci n del sens...

Page 12: ...correctamente otros costos resultantes de cargos laborales retrasos vandalismo negligencia contaminaci n causada por materiales extra os da os por condiciones adversas del agua productos qu micos o c...

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