Kostrzewa Twin Bio Luxury Compact NE 8 Manual De Uso página 85

6. Installation
85
i. Top door
This door is located on the upper side of the boiler, under the cover (dismounting – see „Installation"). It allows for easy cleaning of the exchanger walls and baffles.
It has double thermal insulation. The exchanger's baffle is fitted into a special groove in the insulation plate, which closes the flue gas circulation.
Twin Bio Luxury Compact NE v01 User Manual – EN 01.19
Leader in pellet boilers