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page 2 of these instructions
Inset Installation
1
To inset the Marcello gas fire, a wall plate, supplied separately, must be used.
2
Select a position for the appliance and the height required from the centre of the
glass panel to the floor. Cut a hole in the inner leaf of the cavity wall to the
dimensions shown in Figure 5. A lintel may be required to support the masonry
over the opening .Any cavity wall insulation should be held back away from the
appliance. Drill a 152mm diameter hole in the outer leaf of the cavity wall for
the flue 157mm above the position of the centre of the glass panel. Ensure that
the centre of the flue is at least 700mm above finished floor level.
3
Thread the outside wall plate onto the flue and push the flue into the wall from
the outside. Apply mastic to the rear face of the wall plate and fix to the wall
using screws and wall plugs. Make sure the plate is fixed the correct way up.
(See Figure 3) Slide the flue further into the wall until the tabs on the wall plate
line up with the holes in the outer flue tube. Temporally fix the tube to the wall
plate with the self tapping screws provided. Use the inner holes as shown in
Figure 4.
4
Temporally screw the convector box to the inner wall plate with four M5 screws.
Place the convector box over the protruding flue pipe and push the box into the
hole already cut in the inner leaf of the cavity wall. Centre the convector box
over the flue pipe. Once level, fix the inner wall plate to the wall with six screws
and wall plugs. Cover the access holes to these screws with the six black plastic
plugs supplied. Once the convector box has been finally secured to the inner
fascia the arrangement can be considered to have sealed the cavity. Any gaps
around the inner fascia and any other gaps can be sealed with mastic.
5
From the inside of the convector box measure along the flue 6mm. At this point
draw a line completely around the outer pipe. Unscrew the self tapping screws
securing the outer flue tube to the wall plate and withdraw the flue assembly.
Move the polystyrene support ring inside the flue assembly to a position near
the marked line. Cut the excess flue of at the marked line. De-bur the cut edges
and remove the polystyrene ring.
6
Slide the remaining piece of flue, which should include the terminal, on to the
flue connection on the back of the heat exchanger. Note that the two flue tubes
are not concentric and that the inner tube is positioned towards the top of the
outer tube. Using a 3.5mm diameter drill, drill holes through the holes in the
Figure 5
