AquaStar 32CDFL SERIES Manuale di istruzioni per l'installazione - Pagina 5

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VIRGINIA GRAEME BAKER POOL AND SPA SAFETY ACT (continued)

Pools and spas construction prior to December 19, 2008, with a single submerged suction outlet shall use a suction outlet

cover that meets ANSI/APSP-16 2011 and either:

A. A multiple main drain system without isolation capability or a single (VGB 2008 compliant) unblockable, or

B. A safety vacuum release system (SVRS) meeting ASME/ANSI A112.19.17 and/or ASTM F2387, or

C. A properly designed and tested suction-limiting vent system, or

D. An automatic pump shut-off system, or

E. Disabled submerged outlets, or

F. Suction outlets shall be reconfigured into return inlets.

For more information about the Virginia Graeme Baker Pool and Spa Safety Act, contact the U.S. Consumer

Product Safety Commission at 301.504.7908 or visit www.cpsc.gov.

Note: Always turn off all power to the pool pump before installing the cover or working on any suction outlet.

HYDRAULIC SYSTEM SPECIFICATIONS

POOL PUMP SUCTION REQUIREMENTS

Pump suction is hazardous and can trap and drown or disembowel bathers. Do not use or allow anyone else to use a pool, spa or hot

tub unless it has at least two suction outlets, or an approved single, unblockable suction outlet to each pump suction line. Do not use

or operate swimming pools, spas or hot tubs if a suction outlet cover is missing, broken or loose.

ENTRAPMENT PROTECTION

The pump suction system must provide protection against the hazard of suction entrapment or hair entrapment/entanglement.

SUCTION OUTLET COVERS

All suction outlet covers must be maintained. They must be replaced if cracked, broken or missing. See page 5 for outlet cover

certification requirements. All suction outlets must have correctly installed, screw-fastened covers in place.

WATER VELOCITY AND FLOW RATES

The maximum water velocity through drain covers is limited by some local regulations, for example some state health departments

limit the velocity through public pool drain covers to 1½ feet per second. This velocity limit is lower than the flow rating provided by

ANSI/APSP-16 2011

the

certification, therefore the local limit applies and must be followed. Never exceed the flow rating listed on

the cover even if the local code does not provide a velocity limit.

PIPING – GENERAL

For new installations, the piping between drains must be sized to limit the velocity to six feet per second. This limit applies to the

branch piping and all fittings between multiple outlets and the tee leading back to the pump. If code requires a lower water velocity,

comply with the code. See the chart below for information on pipe size flow ratings at six feet per second.

ACCEPTABLE PIPE SIZE FOR MAXIMUM RECOMMENDED SYSTEM FLOW

Pipe Size

Flow Rate in GPM

RATE PER APSP-7 (6 feet/second in the branch line)

1½"

info

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2½"

110

160

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