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RP/IS-957/957RPDA

Installation, Maintenance, and Repair Manual

Series 957, 957RPDA, LF957RPDA

Reduced Pressure Zone Assemblies

Reduced Pressure Detector Assemblies

2

1

⁄2" – 10"

Testing

For eld testing procedure, refer to Watts installation sheets

IS-TK-DL, IS-TK-9A, IS-TK-99E and IS-TK-99D at www.watts.com.

For Australia, refer to Australian standard AS/NZS 2845.3.

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 modications

to the information provided. You are required to consult

the local building and plumbing codes prior to installa-

tion. 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 war-

rant. 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

!

957-OSY with Flood Sensor

Series 957, 957RPDA, and LF957RPDA each include a ood

sensor on the relief valve to detect excessive discharge and

trigger notication of potential ood events.

NOTICE

For Australia and New Zealand: Pipeline 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.

This device 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 sprinkler system, all

mechanical checks, such as alarm checks and backflow

preventers, should be flow tested and inspected internally in

accordance with NFPA 13 and NFPA 25.

WARNING

!

NOTICE

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

Without the connection kit, the sensor is a passive component that

has no communication with any other device. (A retrofit 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 instal-

lation, 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.

Do not impede or prevent sleeve movement by installing riser

cradle clamps or other obstructive elements on or around the

sleeve. Sleeve movement is required to service the backflow.

WARNING

!

Produktspezifikationen