Flavel Linear Pebble FRDPU0MN User Instructions page 7

c) Pick pebbles A to E and arrange along the the front rail, ensuring that
they are evenly spaced. Use the recess's in the front ceramic rail as a
guide for placement. (See fig. 3 below)
Fig. 3
Pebble A
Pebble B
d) Select pebbles F to I and arrange behind the front row of pebbles,
ensuring that flame paths as indicated below are not interupted.
. (See fig. 4 below)
Fig. 4
Pebble F
Pebble G
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Pebble C
Pebble D
Pebble E
Pebble H
Pebble I