Note: these heat losses are based on an assumed wind velocity at the water surface of 3 1/2 mph. For a velocity ... Source: Minimum Standards for Public Spas, April 1 , 1978, Spa and Tub Association of the National Swimming Pool Institute. F. Spa and ... The system must be able to return the water to a turbidity of 0.50 Jackson Turbidity Units (JTSa#39;s) within four hours following peak user load. Spa heatersanbsp;...
|Title||:||Swimming Pool Management Manual|