In accordance with AS/NZS 2918-2018 overall flue height needs to extend no less than 4.6 metres above the floor or floor protector to the top of flue termination. This includes the floor clearance, fireplace and total flue length.
To meet the above standard both models will come with the following standard flue kit:
Single Wall Flue: 3500mm
Double Wall Casing: 2000mm
Single Wall Flue Length
Internal/Below Ceiling Penetration
Your below ceiling single wall flue length is determined by measuring your floor to ceiling height. If a combustible floor you will need to measure from the top of the floor protector (See Installation Requirements for each Fireplace) to the ceiling.
From this measurement, say for instance 3000mm ceiling height, deduct 500mm minimum floor clearance, (include 40mm or 50mm floor protector if required if floor is combustible) then deduct the height of your desired fireplace 500mm (Elegante) or 800mm (Occhio).
If you were to select the Elegante model, your below ceiling single wall flue length would be 2000mm in this application.
External/Above Ceiling Penetration
Your above ceiling penetration single flue length is determined by measuring the distance from ceiling penetration to roof penetration. On a flat roof this may be 500mm for instance. On a pitched roof it is dependent on the location and the angle of the roof and where the fireplace is located.
For instance on our flat roof example with a 500mm roof cavity the flue length for this section would be 500mm.
Pitched Roof/Second Story/Ceiling Cavities/Attics
If your roof is pitched, you have an attic or a second story above, it is best to measure the height from ceiling penetration to roof penetration, including any other cavities or spaces the flue needs to travel through to reach roof penetration.
Termination
Please see figures below with external termination height requirements. This will allow you to estimate your single wall flue height for above ceiling penetration. The total flue height from the floor or floor protector to the top of termination needs to be no less than 4.6 metres (including floor clearance and fireplace height).
In our example and going by the below diagram the above roof termination length would be 600mm, then to meet the standard 4.6 metres total flue length we would add another 500mm for a total of 1100mm above roof termination length.
This height is made up of:
- 500mm floor clearance
- 500mm fireplace height (Elegante)
- 2000mm below ceiling penetration height
- 500mm above ceiling penetration cavity height
- 1100mm above roof penetration height
Flat Roof Installation
Less than 5%
- The top of the flue must be 60cm above the roofline. Alternatively, there must be a minimum distance of 3 meters from any higher section of roof
- Ensure the double wall flue is installed as per AS/NZS 2918-2018.
Pitched Roof Installation
- The top of the flue must be 60cm above the roofline. Alternatively, there must be a minimum distance of 3 meters from any higher section of roof.
- Ensure the double wall flue is installed as per AS/NZS 2918-2018
