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3.8.8. Preparing the Flue Ducts (for Hearth Mounting)
Note
: This procedure describes
the preparation of flue system
shown in
Figure 39
. For other
examples of flue systems shown
in
Figure 40
follow similar
procedure.
1. Assemble the 3 elbows and the two short
ducts (140mm and 490m long) as shown
in
Figure 45
using screws provided.
Seal all the made joints using the
aluminium tape supplied. Wrap the tape
once round each joint.
2. Affix the assembled ductwork onto the
gather hood on the firebox.
3. Position the firebox with the flue attached
on the hearth such that the flue runs
parallel with the wall and the skirting. A
gap of 25mm must be provided between
any section of the flue and any
combustible materials.
4. Attach a long (860mm) flue section to the
bottom elbow and seal with tape.
5. Secure the firebox to the hearth using
suitable screws through previously drilled
and plugged holes in the hearth.
6. Continue
installation
in
section 3.8.10
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140mm
ELBOW
ELBOW
4
90mm
ELBOW
GATHER
HOOD
FIREBOX
HEARTH
Figure 45
Note
: The black fixing screws
used in the top of the box are
NOT to be relied on as the main
fixing method.
Note
: For top venting follow the
same procedure as above but
connecting a straight length of
flue duct (e.g. 860mm duct) onto
the gather hood by means of a
Flue Straight Adapter (PF350).
3.8.9. Preparing the Flue Ducts (for Hole in the Wall Mounting)
1. Assemble the 2 elbows and the 140mm
duct as shown in
Figure 35
using screws
provided. Seal all the made joints using
the aluminium tape supplied. Wrap the
tape once round each joint. Temporarily
connect this duct to the gather hood on
the firebox.
2. Connect the third elbow to the end of the
860mm straight duct ensuring that the
flange on the duct is positioned against
the wall.
3. Place the duct prepared in step 2 directly
under the loop duct attached to the
firebox at the desired height above the
floor level (NOTE: The duct must be at
least 50mm above a combustible floor to
enable insulation to be fitted).
4. Measure the height between the ends of
the top and bottom elbows. Add 60mm
to the height and prepare a length of
straight duct using 490mm or 860mm (or
both) ducts (supplied) to the dimension
achieved. Connect the two ducts
together (if necessary) using ‘U’ brackets
and backing plates (see
Figure 47
).
5. Temporarily connect this duct between
the top and bottom elbows. Brace the
duct running along the floor in position.
6. Continue installation in
Section 3.8.10
