So I am working with my electrician and a question came up about the heater. I have a commercial duty timer that connects to the circuit breaker box which is to control my pump. He asked if the heater needs to be on the same timer, or is the heater to be plugged in, temperature controlled at the unit and it will cycle on/off based on water flow? I wouldn't want the heater to be on with the pump off. Advice is appreciated.