WL 302 Concentric Tube Heat Exchanger / PC

1 heater with thermostat,  2 water connections,  3 turbine flow meters to determine flow rate,  4 main switch and emergency, pump and heater switches,  5 throttle valves for flow rate,  6 display field,  7 vent valves,  8 temperature sensors,  9 manual valves,  10 pump,  11 tank