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Ventilate outer flue casing
above insulation
300mm min clearance to combustible
mantel from hot air outlet.
*425mm for 850 units and above.
Mantel leg clearance 150mm each side
4. Clearance requirements -
Hebel installation up to 1050 sizes
Non-combustible material only up to outer flange to 300mm
above opening and 150mm to the sides.
Optional 3 or 4 sided 100mm surrounds are available.
If elevating unit above finished hearth level, lower wall finishing
must also be non-combustible.
Clearance to an adjacent wall for units 440 - 1050 and should be
installed to 1200mm as per clause 3.2.2(b) 2918:2018
Wrap entire firebox and gather
in 25mm fibreglass insulation to
200mm above the gather
Timber header above Hebel/Brick box.
150mm
300mm
Fig 3.2
Fig 3.3