H0428 External Air Supply for Burner A25

The device (accessory) allows combustion air to be supplied to the ATMOS A25 burner from outdoor spaces, for example in buildings requiring a blower door test (airtightness test).
The device is intended solely for the ATMOS A25 burner and pellet-only boilers from ATMOS with a boiler output of up to 25 kW.
NOTE: The device is not intended for boilers that allow manual fuel loading (wood, coal, or briquettes) in any mode.
Compatible with boilers equipped with an exhaust fan:
D20P, D15PX, D20PX, D25PX
Compatible with boilers without an exhaust fan:
D15P, D10PX, D14P, D21P, D25P

Kit components:
1 – 1x Flange for External Air Supply for A25
2 – 1x Gasket for the External Air Supply Flange
3 – 15x Screw Ø 4 mm (self-drilling)
4 – 4x Screw 4×30 mm (for wall plug)
5 – 4x Wall plug
6 – 1x Aluminum hose with an inner diameter of 100 mm and a length of 5 m (for a wall opening Ø 110 mm)
7 – 1x Flexible hose, diameter 100 mm, length 70 cm (for DxxPX, PXxx models)
8 – 1x Hose holder with nozzle – connector for flexible and rigid hose (for DxxPX, PXxx models)
9 – 3x Hose bracket – for securing the hose to the boiler or the wall
10 – 3x Hose clamp for securing the hose to the hose holder with nozzle
11 – 1x Cover – external wall grille for house façade (round – Note: do not confuse with others)