The first layer is
completed using two
segment heat-storing
bricks to form a closed
ring.
In the second layer,
the bevelled bricks
are "reversed" and
placed on the
bevelled bricks in the
first layer. . .
. . . then the
second layer is
completed with two
segment heat-
storing bricks.
The third layer is
started with two
segment heat-storing
bricks and
completed with two
bevelled bricks.
The layout of the fourth layer is dependent on the flue
pipe connection.
If the connection faces upwards, the back half
(consisting of 4 bricks) is placed inside first, and then
two bevelled bricks are placed at the front (with the
bevels facing upwards). ¼ of each of the top layers is
not shown in the diagram to make the illustration clearer.
If the connection is to the rear, the rear half of
the fourth layer only consists of 2 bricks, the
two smaller bricks are left out, and then two
bevelled bricks are placed at the front again
(with the bevels facing upwards).
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