To improve the ability to control heating two bodies of water, Green Planet Supply added relays on the Hydro Royal that allows the heat pump pool heater to control two low-voltage valve actuators without adding an automation system. When a switch or contact is closed, the water-diverting valves move one way, and when opened, the water moves in the opposite direction.
Contact: (888) 205-7766; www.hydroroyal.com
