Residue tray is used in order to supply hot water for the system. The body of the tray is manufactured from St 37 steel and the residue combustion oven is manufactured from GG 20 foundry material. The remote controller panel is controlled by thermostat and installed on the tray. Oven fuel feeding is ensured by the transfer of the dry residue in the residue bunker to the combustion room with the help of a spiral automatically.

This unit provides water for the system without wasting the water in the tray, but by heating the water coming from the network at 35-40 Celsius degrees.