303.1 Energy Consumption of Pools and Permanent Spas
Time switches or other control methods that can automatically turn off and on heaters and pump motors according to a preset schedule shall be installed for heaters and pump motors. Heaters and pump motors that have built-in time switches shall be in compliance with this section.
- Where public health standards require 24-hour pump operation.
- Pumps that operate solar- or waste-heat recovery pool heating systems.
Exception: Where more than 70 percent of the energy for heating, computed over an operating season, is from a heat pump or solar energy source, covers or other vapor-retardant means shall not be required.