Reduced Clearances Using Shielding - Osburn 1800 Owner's Manual

REDUCED CLEARANCES USING SHIELDING

You may decrease the minimum clearances to heat-sensitive materials by installing heat
radiation shields between the walls or the ceiling and the stove. These heat radiation shields
must be installed permanently, and must be made of a heat-resistant or heat-tolerant material.
An air gap must separate the heat shield from any heat-sensitive surface. Furthermore, the heat
shield shall extend in all directions beyond the boundaries of the appliance surface by a distance
of not less than 450 mm. Exceptions may apply. Refer to AS/NZS2918:2001.
Following the installation of such heat radiation shields, the minimum clearances to heat-sensitive
materials may be reduced by applying the clearances factor in the table below:
CONSTRUCTIONS AND CLEARANCES FACTORS FOR APPLIANCES HEAT SHIELDS WHICH
HEAT SHIELD CONSTRUCTIONS
Single layer of continuous material
Single layer of continuous material
Two spaced layers of continuous material
NOTES :
1- Masonry may be used as a heat shield material.
2- Where heat shields are used to reduce appliance clearance dimensions, additional flue
shielding may also be required. Refer to AS/NZS2918:2001.
3- Non standard installations – Refer to AS/NZS2918 for guidance.
O
ARE WITHIN 45 OF THE VERTICAL
Minimum air
gap dimensions
(mm)
12
25
12+12
Clearances
factor
0.40
0.30
0.20
9