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Section P2720 Whirlpool Bathtubs

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P2720.1 Access to Pump
Access shall be provided to circulation pumps in accordance with the fixture or pump manufacturer's installation instructions. Where the manufacturer's instructions do not specify the location and minimum size of field-fabricated access openings, an opening of not less than 12 inches by 12 inches (305 mm by 305 mm) shall be installed for access to the circulation pump. Where pumps are located more than 2 feet (610 mm) from the access opening, an opening of not less than 18 inches by 18 inches (457 mm by 457 mm) shall be installed. A door or panel shall be permitted to close the opening. The access opening shall be unobstructed and be of the size necessary to permit the removal and replacement of the circulation pump.
P2720.2 Piping Drainage
The circulation pump shall be accessibly located above the crown weir of the trap. The pump drain line shall be properly graded to ensure minimum water retention in the volute after fixture use. The circulation piping shall be installed to be self-draining.
P2720.3 Leak Testing
Leak testing and pump operation shall be performed in accordance with the manufacturer's instructions.
P2720.4 Manufacturer's Instructions
The product shall be installed in accordance with the manufacturer's instructions.

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