8
3.4 Floor Protector Requirements
The Hurunui burner can be installed on any non-combustible ash floor protector with minimum dimensions given
on page 4 of this manual. Please note that the dimensions given are minimum, and we recommend using a
slightly larger floor protector size.
Please note that the Hurunui burner is heavy, having a total weight of 130 Kg. The floor and the materials used
as floor protectors should be strong enough to bear this load. The minimum requirements for material to be used
as floor protectors on a combustible material are
-
6mm fibre cement board (e.g., Hardies Tile & Slate Underlay) plus 8mm ceramic tiles on a firm base.
-
4mm mild steel floor protector supplied by Glen Dimplex
-
Or equivalent.
3.5 Reducing Clearances
The clearances to combustible specified in section 2.0 of this manual can be safely reduced by following
guidelines specified in AS/NZS 2918:2001 table 3.1 & 3.2.
-
Heatshield should be made of non-combustible material like metal or masonry.
-
Installed between the burner and the combustible wall
-
With an air gap behind it and vented top and bottom
-
The shield should extend a minimum of 450mm beyond the top of the appliance and extend width-wise so
that unshielded rear clearance is maintained
Clearance factors for heat shield which is within 45 degrees of the vertical
Heat Shield Construction
Minimum Air Gap Dimension
Clearance Factor
Single-layer of continuous material
12mm
0.4
Single-layer of continuous material
25mm
0.3
Two spaced layers of continuous material
12mm+12mm
0.2
Clearance factors for heat shield which is more than 45 degrees off the vertical
Heat Shield Construction
Minimum Air Gap Dimension
Clearance Factor
Single-layer of continuous material
12mm
0.8
Single-layer of continuous material
25mm
0.6
Ensure that all such installations meet the local rules and are approved by the local building authorities before the
installation process begins,
3.6 Seismic Restraint
The Hurunui ULEB must be seismically restrained, including the floor protector. The figure below gives the holes
that can be pre-drilled on the floor protector with respect to the flue centre. We recommend a minimum size of
8mm Dyna Bolts on the concrete floor or 8mm coach screws or toggle fasteners for wooden floors of appropriate
length. Two holes are located at the rear of the burner.
Summary of Contents for HURUNUI
Page 18: ...18 ...