Smeg Gas Cooktop PA106SX Instructions For Installation And Use Manual page 22

Instructions for the installer
9.4 Arrangement of the burners on the hob
BURNERS
1 Auxiliary
2 Semi rapid
3 Medium rapid
4 Large rapid
5 Ultra rapid
When replacing the burner rings, remember that they have to be tightened
completely by means of the wrench supplied, otherwise the flame interruption
zones on the flame crowns will not be aligned with the grid spokes.
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