The product is intended for outdoor use only and must be placed on a flat surface that can withstand the weight of the full barrel.
It is important that the foundation is straight and level also under the outdoor water heater. Distance to flammable materials 3 meters from the chimney mouth.
A filled pool or water heater must not be allowed to freeze. After the fire is out, drain the heater by emptying the drain plug. Hot tubs/pools and water heaters must not be emptied before the fire is completely out and the embers have died down.
Do not heat the water too hot. The recommended temperature is 37 degrees.