3
Prepare an opening in the wall as illustrated in Diagram 1.
• If the enclosure is constructed to the full height of the
room and is fully open/vented into the ceiling cavity of
the home, then the venting requirements as detailed in
Diagram 2 of this page are not required.
• If the ECO Mega Smart Built-In is built into an enclosure
that is not open/vented to the ceiling cavity, the
enclosure must be vented as illustrated in Diagram 2
and specified in the grey panel below.
• Insulation is not required under the ECO Mega Smart Built-
In, it may sit directly onto a timber or particle board floor.
Note: Raise the fire box to suit any floor protector height.
• The distance from the front edge of the enclosure,
including wall lining (directly behind the fascia) to the
centre of the flue is 445mm as shown.
Note: If a brick front is to be built you need to allow for the
thickness of the bricks.
Diagram 2
F
lue centreline
Vent(s)
445mm
670mm min
84
5m
m
81
8m
m
10
00
m
m
9mm Promina board or equivalent
non-combustible material. Please note: fire rated
gib board is not an acceptable material
915mm
- 1000m
m
1200mm
81
8m
m
10
00
m
m
Diagram 1
Stage 2 – Preparing the wall opening/cavity
• The timber frame opening must be a minimum of
845mm high and 915mm wide. A 1000mm x 1200mm
sheet of 9mm promina board or equivalent non-
combustible material is required around the fascia
with a maximum opening to fit around the ECO Mega
Smart Built-In firebox of 818mm high and 1000mm
wide as illustrated in Diagrams 1 & 2.
• Please note: Fire rated Gib board is not an
acceptable material.
CAUTION!
Important Information
• An air vent or vents are required on the rear of the
enclosure. The bottom edge of this vent/vents must
be no more than 100mm above the floor and have a
minimum surface area of 32000sq mm. I.E a vent of
400mm x 80mm on the rear of the cavity.
• If the enclosure is through an external wall, suitable
precautions will be necessary to prevent rodents
and debris from entering or restricting the air vents.
If grills are used ensure the minimum vent area is
maintained through the grill itself.
CAUTION!
Important Information
9mm Promina board or equivalent
non-combustible material. Please note: fire rated
gib board is not an acceptable material
