Swimming pool fish pond bath Coats thermostat digital display knob electric heating automatic thermostat. Eeds to be used with a corresponding size pump. If the water pump does not match the thermostat, the flow is too small, and the heating tube will be damaged due to dry burnin. The power of the supporting water pump below 11KW is not less than 750W, and the flow rate is not less than 13 cubic meters per hour The power of the supporting water pump above 11KW is not less than 1.1KW, and the flow rate is not less than 18 cubic meters per hour Operation sequence: turn on the water pump first, then turn on the thermostat, turn off the thermostat and wait 10 seconds to 1 minute before turning off the pump. The item "220v/380v 5.5kw to18KW pool Heat pump /electric water heater Swimming pool" is in sale since Wednesday, May 19, 2021.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Heaters & Solar Panels". The seller is "machine-goods" and is located in CN. This item can be shipped worldwide.