... on the water capacity 3.1 year Electric heater I, Installation1,Should select three-core cable, ... ) If you choose non-integent controlling heater, you should choose the heater with temperature-controlling device, to realize ... water with electricity.2,When you use the heater, you should do try-regulation. To the ... first of all, we should consider to change the circuit. ) 3,In using it, if you have ...