Kostrzewa Twin Bio Manual De Uso página 54

54 4. Twin Bio boiler design
4.A. Boiler body
• inner shell assembly – P265GH (as per DIN EN 10028)
– 5 mm boiler steel for pressure tanks
• outer shell assembly – S235JR (EN 10025-2)
– general purpose common steel, thickness 4 mm
• fi re partitions – P265GH (as per DIN EN 10028)
– thickness 5 mm
• boiler casing – DC01 – powder painted 0.8 mm steel sheets
• boiler body insulation – mineral wool
Twin Bio is a boiler with a three fl ue gas passes combustion
circuit. All boiler components are MAG - 135 welded. Most of
the boiler components are welded with fi llet welds and butt
welds.
Fig. Door insulation
Experts in heating
4.B. Boiler door
Boiler door is made of S235JR (EN 10025-2) 3 mm thick
structural steel. It is fi tted as left-side door as standard (it can
be fi tted as right-side door as well). It has double thermal
insulation.
1. thermal insulation
2. thermal insulation
3. rope seal
User Manual Twin Bio - PLV 09.13