56
GB
d
d
Maximum fl ow rate
in m
3
/h
Air inlet speed
in m/s
Additional air passage
section cm
2
Up to 50 1 140
50 - 100 1 280
100 - 150 1 420
SÌ
NO
SÌ
10
11
12
• If in the heater room there are other de-
vices that need air for their operation, the
section of the aeration opening must be
adequately sized (as in the case of elec-
tric extractor fans, see fi gure 14).
• A suction hood (for example for a cooker)
must be considered to all eff ects as an
electric extractor fan.
• An open fi replace must have its own air
intake, otherwise a type B gas device
cannot be installed in the same room.
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