The solution's operating principle is that the energy in the continuous flow of shower water is heat exchanged against the continuously incoming cold water.
The connection of the waterproofing to Enduce E1 is done via traditional clamping frame connections for either waterproofing foil for tiled floors, or for plastic carpet.
But it is perfectly possible to take a cold shower. When you adjust the mixer to colder shower water, less hot water is mixed into the shower water and less heat is transferred from the outgoing shower water to the incoming cold water.
For concrete floors, the concrete cover layer under the floor drain should be about 70 mm to ensure fire EI 60 without further fire tests or thermal conductivity calculations.
Hot and cold water is connected to the side of the floor drain junction box via PEX hose in 25 mm conduit via type-tested cabinet penetrations. Drains are connected to the floor drain's 75 mm horizontal outlet spigot.
The floor drain can be ordered with a mounting frame for installation in lightweight floors (e.g. wood and sheet metal beams) with floorboards, or with fastening ears for fastening and leveling before pouring the floor and floor.
