Abstract: Apparatus, systems, and methods to monitor and control operation of an aquatic facility comprising a water basin, a water supply subsystem, and other subsystems. A simplified, centralized, scalable control subsystem comprises a base controller including with inputs and outputs and a human-machine interface. Sensors are operatively connected to the base controller and adapted to directly or indirectly sense one of a pre-selected set of parameters related to the operation of the aquatic facility. Actuators are operatively connected to the base controller and adapted to directly or indirectly actuate one of a pre-selected set of operations of the aquatic facility. The base controller is programmable relative to setpoints or other operational criteria of the aquatic facility; and actuation of at least a base subset of the actuators and graphical representation of the facility and the water supply, and the at least one subsystem, and the pre-selected operations of the aquatic system.

Abstract: A valve assembly for regulating water level in a swimming pool includes a first butterfly valve in a pool drain line of the pool and a second butterfly valve in a fresh water line. The drain line and the fresh water line supply water to a pit remote from the pool. A return water line directs water from the pit to the pool. A float in the pit is operatively connected to both butterfly valves via first and second pivotal arms which are rotated by a sliding frame when the buoyant float rises and falls, so as to close and open the butterfly valves, and thereby maintain a desired water depth or level in the pit, and thereby a more consistent water level in the pool.

Abstract: In an improved swimming pool water heating system, water in the pool circulates through a first loop from the pool to a surge pit and through a filter before returning to the pool. The heating system includes a second loop with a heat exchanger and a remote water heater. The pool water is heated by the heat exchanger. The first and second circulation loops are separate from one another. The heater may include multiple heating units which can be staged for sequential actuation. The second circulation loop is closed, such that the pool water does not flow through the heater, but rather is indirectly heated via the heat exchanger. The heater is isolated from the pool water. The heating units are vented to atmosphere so as to be non-pressurized.