Flavel Quasar NRDC MN2 Series Installation, Maintenance & User Instructions page 54

5.10.3 Fit three of the large sized square coals onto the front ceramic rail,
and two of the random shaped coals as shown below ensuring
that they are evenly spaced. Use the recess's in the front ceramic rail
as a guide for placement. (See figure 7 below)
Fig. 7
5.10.4 Select two of the large square coals two of the large random coals and
arrange behind the front row of coals, ensuring that flame paths as
indicated below are not interupted, place one of the small coals at
each end of the second row. (See figure 8 below)
Fig. 8
Square
Random
Flame Paths
Square
Random
Square
Random
Random
Square
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Square