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1500 unit -
A minimum 720mm deep x 1600mm wide x 100mm thick non-combustible insulating floor protector (Hebel blocks) should be used
under the appliance, a minimum 1900mm wide x 900mm deep x 100mm overall thick non-combustible insulating floor protector
(Hebel blocks) must be used in front of the appliance base when installing the appliance (see joint AS/NZS 2918:2018 3.3.2).
The floor protector should extend 900mm in front of the appliance opening and be placed centrally in the 1900mm width.
100mm thick floor protector projection can consist of multi-layered non-combustible materials.
1200 unit -
A minimum 720mm deep x 1300mm wide x 100mm thick floor protector (Hebel blocks) should be used under the appliance, a
minimum 1650mm wide x 900mm deep x 100mm thick floor protector (Hebel blocks) must be used in front of the appliance base
when installing the appliance (see joint AS/NZS 2918:2018 3.3.2).
The floor protector should extend 900mm in front of the appliance opening and be placed centrally in the 1650mm width.
100mm thick floor protector projection can consist of multi-layered non-combustible materials.
The Thermal resistivity of the floor protector is 0.65m².K/W for 100mm thick Hebel Blocks. The Thermal resistivity for 75mm PowerPanel
is 0.59m².K/W
4. Clearance requirements
Non-combustible material up to outer
flange to 600mm above opening and
200mm to the sides.
If elevating unit above finished hearth
level, lower wall finishing must also be
non-combustible.
Hebel 600mm min.
above firebox.
50mm min. clearance to
combustibles within ceiling cavity
and penetration points
Timber framing at zero
clearance to 75mm hebel
power panel.
Ensure lower air intake is
not obstructed
50mm clearance to outer skin
of flue in all directions
Minimum 1650mm - 1200 unit
Minimum 1900mm - 1500 unit
200mm
Fig 3.4
Clearance to an adjacent wall for units 1500 & 1200 and should be 1200mm in all directions as per clause 3.2.2(b) 2918:2018
900mm
