3
2.4.
CORNER INSTALLATION
Dimensions given in the table and image below represent the
minimum clearance (in millimetres) to combustible materials.
C = Minimum floor protector depth from door opening
D = Minimum clearance to ceiling above
E = Corner clearance
2.5.
CLEARANCE DIMENSIONS
2.6.
FLOOR PROTECTOR
Unless the open fireplace will be standing on a heat resistant
floor such as concrete slab with slate or tiles, it will be
necessary to provide a floor protector.
The minimum required overall dimensions for the floor
protector are shown in the previous section.
The construction and dimensions of the floor protector
depends on the height of the open fireplace firebox above the
floor:
450mm or greater above the floor (including being installed
on base cabinet) – floor protector constructed from minimum
5mm thick non-combustible material with a thermal
conductivity not greater than 0.33W/m °K, equivalent to
compressed fibre cement sheet. The floor protector must
extend not less than 200mm either side of the firebox opening
(1285mm min. overall width), and not less than 300mm
forward from the front of the open fireplace, extending
beneath the appliance, and not less than 75mm behind
(1000mm min. overall depth).
Less than 450mm above the floor – two options:
a)
Skamotec 225 board – 50mm thick board, extending not
less than 200mm either side of the firebox opening
(1285mm min. overall width), and not less than 500mm
forward from the front of the open fireplace, extending
beneath the appliance, and not less than 75mm behind
(1200mm min. overall depth).
b)
Ventilated floor protector – two sheets of 15mm thick
compressed fibre-cement sheet with a 1mm thick sheet
of steel between them, spaced off the floor with 25mm
high non-combustible spacers such as RHS square tubing,
or equivalent, with a minimum ventilation of 2500mm
2
at each end between the spacers. Minimum dimensions
overall as above – 1285mm wide x 1200mm deep
extending not less than 500mm in front of the open
fireplace.
Non-combustible tiles may be laid over the top of either floor
protector.
For more details and variations on floor protectors refer to
AS/NZS 2918 Clause 2.2, 3.3.1, & 3.3.2.
Model
A
B
C
D
E
Free Standing 500
100
500
1300
25
Free Standing
with Base
500
100
300
1300
25
