41
6.
INBUILT INTO ISLAND WALL
STEP 13: TRIPLE SKIN FLUE
Triple skin flue is to then be continued above the cavity lid. The
lower end of the triple skin casing shall be close fitting against
the lid and the outer casing must be ventilated. Air vents on
the first length of triple skin flue must be cut by the installer.
STEP 14: FLUE INSTALLATION
The triple skin flue will then be continued into the roof cavity
and extended above the roof line as per AS/NZ 2918:2018.
There must be a 25mm clearance around the outer triple skin
flue. The flue must extend a minimum of 1m above the roof line
and have a 3m diameter clearance from the top of the cowl to
any objects in a horizontal direction.
**IMPORTANT**
Please note the flue should not include more than two 45°
bends. The angle of these bends cannot exceed more than 45°
and can have no more than one length of 900mm flue between
them.
DUCTING:
CONNECTED TO
DESIGNATED
ROOM(S)
TRIPLE
SKIN
FLUE
ROOF CAVITY
1M
ABOVE
ROOF
LINE
STEP 15: FRONT
Attach a minimum thickness of 100mm Hebel from the base to
the top of the ceiling on the front of the enclosure.