Auto Heater 2kw - LX Hot Tub Spa Heater with Thermoregulator Fish Koi Pond
LX H20-RS1 Heater with Thermoregulator 2KW. Required flow rate: Set by pressure switch, this switch will need to be pressurised, if it runs straight to a big bore out let with no bends, there will be no back pressure and it may not work.