classic scheme

water zone

flow of flue gases

insulating layer

1.Top door
2.Lower door
3.Door for burner
4.Hole’s lid for secondary draught
5.Connector for draught regulator R 3/4”
6.Tube connector for returning water
7..Tube connector for supply water
7-1.Connector for heat exchanger

8.Smoke tube
9.Hole for cleaning and hole for gas burner
10.Hole for cleaning from backside
11.Ash shaker
12.Ashtray’s door
14.Connector for filling and emptying R 1/2”