b)
Position the front row of four large loose pebbles along behind the first
row of pebbles, ensuring that the flame paths as indicated are not
interupted. See Fig. 16 below
Fig. 16
Beige pebbles
to be positioned
as indicated
c)
Fit the three small pebbles onto the ribs in the fuelbed as
shown below, ensuring that the rear flame paths as indicated are
not interupted. See Fig. 17 below.
Fig. 17
21