ADF LINEA 85 - Page 6

ADF LINEA 820 NMV ZERO CLEARANCE BOX ASSEMBLY INSTRUCTIONS 1/8/23
6
Ventilation for the Inbuilt Heater Space
• The cavity must be vented to allow air flow through the Zero Clearance Box, to
keep all components and construction cool, and circulate warm air back into the
room. If the cavity is capped, the vent must be below the cavity, and no
restrictions to air flow.
• Gap around the flue casing and the combustible roof material is minimum
50mm. If there is no roof cavity space between the ceiling and roof, See 3.4.2.2
in AS2918:2018 for venting through roof and weather proofing. Examples
shown on page 7.
• Include top and bottom vents, Minimum area 400mm x 50mm open air space
vents (360cm
2
) each. One at 120mm above the hearth, but below the ZCB, the
second minimum 200mm below the ceiling, but 2135mm above the floor.
Vent Roof opening as per
3.4.2.2 in AS2918:2018
Vent >120mm above
Hearth, and below
the top of the bench