Raritan 12-Gallon Hot Water Heater w/o Heat Exchanger - 120v [171201] spectrum Do I need the isolation

Do I need the isolation kit

1 mile-per-hour increments

Cut-In RPM: 1

2-Year Warranty

Raritan 12-Gallon Hot Water Heater w/o Heat Exchanger - 120v [171201] spectrum Do I need the isolation1700 Series Water Heater120v12 GallonW O Engine Heat ExchangerThe "1700 Series" water heater provides hot water for galley and shower. Dense foam insulation provides better and longer heat retention than traditional fiberglass. The tank itself is protected by a 75 PSI T& P ( temperature and pressure) relief valve. The cylindrical design of the tank enables it to withstand more pressure than a cube shaped tank. Heat exchanger models can be connected to