Thank you for taking the time to read my question and any advice you may have:
Current Setup:
I picked up a hot tub that has 2x 220v pumps. The one that has the heating element inline is a 2-speed that runs on low when it needs to heat, or during it's cleaning cycle schedule
Planned modification:
I picked up a pool heat pump unit that can heat and cool. I will be tying this heat pump into the plumbing loop and intend to use it to heat and cool the hot tub, disconnecting the existing element, allowing it to be used as a cold plunge, or just refreshingly cool in the FL summer, as well as some energy savings.
Technical problem:
1. (dual controls) I need to make sure that both the high and low speed circuits of the pump are not energized at the same time, because I understand this would fry the motor. The heat pump has a 110v (up to 500w) signal outlet, that I understand I will need to use a contactor in order to power the low-speed circuit when it calls for it. I would like to maintain the ability for both the hot tub and the heat pump to turn on the low-speed circuit, but I will need to integrate a circuit that will not allow the hot tub to turn on the high-speed circuit when the low-speed is on from the heat pump.
2. (Pump wiring voltage) Next I need to decipher what voltages the ones in the diagram represent. It is unclear to me how the 220v circuit is completed for either low or high speed because it shows white as the common, and red as high and black as low, but I suspect that it is not using traditional color coding and that the white is used as one leg and the black and red are just the other leg.
Current Setup:
I picked up a hot tub that has 2x 220v pumps. The one that has the heating element inline is a 2-speed that runs on low when it needs to heat, or during it's cleaning cycle schedule
Planned modification:
I picked up a pool heat pump unit that can heat and cool. I will be tying this heat pump into the plumbing loop and intend to use it to heat and cool the hot tub, disconnecting the existing element, allowing it to be used as a cold plunge, or just refreshingly cool in the FL summer, as well as some energy savings.
Technical problem:
1. (dual controls) I need to make sure that both the high and low speed circuits of the pump are not energized at the same time, because I understand this would fry the motor. The heat pump has a 110v (up to 500w) signal outlet, that I understand I will need to use a contactor in order to power the low-speed circuit when it calls for it. I would like to maintain the ability for both the hot tub and the heat pump to turn on the low-speed circuit, but I will need to integrate a circuit that will not allow the hot tub to turn on the high-speed circuit when the low-speed is on from the heat pump.
2. (Pump wiring voltage) Next I need to decipher what voltages the ones in the diagram represent. It is unclear to me how the 220v circuit is completed for either low or high speed because it shows white as the common, and red as high and black as low, but I suspect that it is not using traditional color coding and that the white is used as one leg and the black and red are just the other leg.
