21
4.2
HeBel inStallation
step 4: side walls - seCond layer & Ventilation
**important**
Ventilation is required on the enclosure to help with air
circulation. a minimum of two air intake grills are required
at the bottom and a minimum of two air out-take grills are
required on top of the masonry enclosure (2X inflow 2X
outflow). all vents can be positioned either side or the front of
the masonry enclosure. all vents must adhere to the minimum
vent size of size 300mm2.
*the vent sizes and quantity can be adapted and changed
but they must meet the minimum ventilation requirements
as specified above. For custom made vents please contact
your nearest dealer. all Vents must not be plastiC or
Combustible.
Using Hebel build a layer of bricks from the base to the top of
the ceiling on either side of the enclosure.
step 5: baCk wall Completion
for structural support place a steel frame on the back wall
in front of the Hebel and connect to the two opposing steel
frames.
STEP 6: POSITIONING OF THE UNIT
Place the firebox into position on top of the sheet metal.
Remember to leave a 25mm air gap on all sides of the firebox.
(if an outdoor air-kit is to be connected please leave a 125mm
air-gap at the rear of the firebox).
*all air-vents must have a minimum clearance to combustibles
of 600mm in front and 300mm above the metal vent itself.
