Fig. 17
3. Screw the screws into the fi rst stone. Let the screws stand
out 28 mm on the outside.
Fig. 18
4. Turn the stone round and push it down around the fl ue
pipe. Make sure the fl at side is facing forward. NB: Adjust
the screws so that the stones are stable.
Fig. 19
5. Place the other stones over the fi rst stone.
Fig. 20
6. Place the off set pipe (A) in the fl ue pipe. Make sure the
off set pipe is facing backwards.
ENGLISH
A
21