Keep the burner orifi ces unblocked!
Figure 27: Marble pebbles Derby Large Tunnel 3 CF/LF
Position natural gas and propane/butane burner
Keep the burner
orifi ces unblocked!
Important: • Do not place any marble pebbles in front of the pilot light.
Make sure that the pilot light can burn freely over the main
burner.
• Keep the burner orifi ces unblocked.
Only this way a proper ignition of the main burner is ensured.
Once the logs / marble pebbles have been positioned, replace the glass in the appliance,
following the instructions in chapter 4: DISMANTLING / ASSEMBLING OF THE
GLASS.
1.7.6 Mounting fl ue gas restriction plate
Depending on the length and shape of the concentric fl ue system and the chimney
construction, you should, if indicated, fi t a restriction plate with a certain width (B) into
the ceiling of the combustion chamber.
To do this, see the set-up options as listed in fi gure 4 through 14.
Marble pebbles must not be placed
next to the pilot light burner
