// CODE SNIPPET
Section 704 Circulation System
JUMP TO FULL CODE CHAPTER
Circulation equipment shall be installed, mounted and supported in accordance with the manufacturer's instructions.
In climates subject to freezing, circulation system equipment shall be designed and fabricated to drain the pool water from the equipment and exposed piping, by removal of drain plugs and manipulating valves or by other methods in accordance with the manufacturer's instructions.
A pump including a motor shall be provided for circulation of the pool water. The equipment shall be sized to provide a turnover of the pool water not less than once every 12 hours. The system shall be designed to provide the required turnover rate based on the manufacturer's specified maximum flow rate of the filter, with a clean media condition of the filter. The system flow shall not exceed the filter manufacturer's maximum filter flow rate.
The process piping of the circulation system, including but not limited to hoses, tubing, piping, and fittings, shall be made of nontoxic material and shall be capable of withstanding an internal pressure of not less than 11/2 times the rated pressure of the pump. Piping on the suction side of the pump shall not collapse when flow into such piping is blocked.
Pressure-type filters shall have an automatic internal means or a manual external means to relieve accumulated air pressure inside the filter tank. Filter tanks composed of upper and lower tank lids that are held in place by a perimeter clamp shall have a perimeter clamp that provides for a slow and safe release of air pressure before the clamp disengages the lids.
Filter tanks incorporating an automatic internal air relief as the principal means of air release shall be designed with a means to provide for a slow and safe release of pressure.
A separation tank used in conjunction with a filter tank shall have a manual air release or the tank shall be designed to provide for a slow and safe release of pressure when the tank is opened.
Pool pumps shall be tested and certified by a nationally recognized testing laboratory in accordance with UL 1081.
Where a pressure-type filter is installed, a cleanable strainer or screen that captures materials such as solids, debris, hair and lint shall be provided upstream of the circulation pump.
Pumps and motors shall be accessible for inspection and service in accordance with the pump and motor manufacturer's instructions.
An accessible means of shut off of the suction and discharge piping for the pump shall be provided for maintenance and removal of the pump.
The surface skimming system provided shall be designed and constructed to skim the pool surface when the water level is maintained between the minimum and maximum fill level of the pool.
Where surface skimmers are not the only outlet for pool water, they shall be considered to cover only that fraction of the 800 square feet (74.3 m2).
Related Code Sections
Section 311 General Compliance, Circulation Systems
The provisions of this section shall apply to circulation systems for pools and spas. Exceptions: Portable residential spas and portable ...
315.2.1 General Compliance, Circulation Systems
Public pool circulation systems shall be designed to process not less than 100 percent of the turnover rate through skimmers ...
Swimming Pool and Spa Code 2015 of Massachusetts > 3 General Compliance > 315 Skimmers > 315.2 Required > 315.2.1 Circulation Systems
Section 407 Public Swimming Pools, Circulation Systems
Circulation systems for pools shall comply with Section 311 and the provisions of this section ...
Swimming Pool and Spa Code 2015 of Massachusetts > 4 Public Swimming Pools > 407 Circulation Systems
Section 604 Aquatic Recreation Facilities, Circulation Systems
A circulation system consisting of pumps, piping, return inlets and suction outlets, filters, and other necessary equipment shall be provided ...
Swimming Pool and Spa Code 2015 of Massachusetts > 6 Aquatic Recreation Facilities > 604 Circulation Systems
Section 704 Onground Storable Residential Swimming Pools, Circulation System
A circulation system consisting of pumps, hoses, tubing, piping, return inlets, suction outlets, filters and other related equipment that provides ...
Swimming Pool and Spa Code 2015 of Massachusetts > 7 Onground Storable Residential Swimming Pools > 704 Circulation System