5
The flue system used when installing the heater MUST comply
with the current installation standard AS/NZS 2918.
Full instructions on the installation of the flue will be supplied
with the flue kit. These MUST be followed closely, including
the minimum exit height from the top of the floor protector
being not less than 4.6m, and the minimum exit height above
the roof line of roof ridge as detailed in the instructions.
The flue must be fitted with one of the following:
1)
Rear flue shield – 900 mm long, minimum 160° arc,
stainless steel unpainted rear flue shield with 25mm gap
between it and the 150mm diameter active flue, and
25mm above the top of the heater, OR
2)
Decro-mesh –
Note: MUST be installed with the manufacturer’s 490mm
tall inner shield AND ventilated decro-mesh locating ring.
A full length, half radius perforated decro-mesh flue shield
extending from the heater through into the drop box
penetrating the ceiling with the perforated surface facing
the front.
The 490 mm half round stainless steel inner reflector
supplied with heater must be fitted inside the decro-mesh.
The manufacturer’s decro-mesh ‘locating ring’ must be
used to support the decro-mesh and inner shield up off
the heater top. It is important that air can be drawn into
the base and rear of the decro-mesh.
Place the locating ring above the flue spigot (resting on the
top plate) and then place the first length of 150mm active
flue into the spigot. With the 490mm inner shield fitted
inside the decro-mesh, slide the decro-mesh over the
active flue. Locate the bottom of the decro-mesh and inner
shield inside the locating ring.
Depending on the supplier, decro-mesh can be one of
three sizes – 200 mm, 7 ¾ inch, or 8 inch diameter. The
decro-mesh ring will fit the two smaller diameters but
not the 8 inch. In this scenario, snip through the outer
ring with tin-snips as shown in the drawing below. Bend
the two “arms” in a little so they ends don’t project out
when fitted to the decro-mesh. Ensure that the snipped
section is at the rear of the flue, out of sight.
If the draft is insufficient or periodic down drafting occurs and
the heater smokes or only burns slowly, extending the flue or
fitting a specialist cowl will usually resolve the issue.
5. INSTALLING THE FLUE
Decro-mesh
Inner reflector
Active flue
Locating ring
Gently bend these in
a little after snipping
in the centre
