The furnace of the heater.

 Sauna oven heat with dry birch firewoods.They  must  heat exactly, leaving are hot coils without carbon monoxide. When firewood are heated, close a door of sauna, that wall, and top place good heated, and smell for carbon monoxide disappears. And in a good heated furnace are stones heating till 600C, this is crimson glow.  Sprinkle hot water on the incandescent stones, this is need for hot adding and for disinfection steam -room - condescending steam cleans atmosphere. When on the shelves appear dry spots, thus steam-room is over dried. Now is close door at steam-room and stay ready to procedure. Apply   steam is a not simple, here is need a feeling for measure .First  not  flood an oven, and not overdo it, light steam not enjoy abundant humidity, and water here needing a hot. Sprinkle water on stones with  fan, but not in one point. Water on the stones not boil, this is sign for cooled stones, but evaporate with deaf clap. Disperse steam by  wave with broom , give hot  by little, but very often, and if burn ears ,thus you are bad supplier of steam .

At sauna is a not place for vanity, you will lost a time, if will not set on atmosphere for slowness, full relax, enjoying all stages for sauna procedure. Thus  you are to leave the sauna ,like you were  born again.