Ariston NSGA 500 Instructions Pour L'installation Et L'entretien page 41

d
The opening is too small for the air supply
requirements of the appliance and fi replace – the
latter must have its own air supply (contact the
fi replace's manufacturer).
Maximum fl ow rate in m
up to 50
beyond 50 and up to 100
beyond 100 and up to 150
INDIRECT AERATION
If the room cannot be aerated directly, an indirect ventilation system can be used in which
air is introduced from an adjacent room through an appropriately sized opening on the lower
section of the door. However, this solution is only feasible when:
• the adjacent room has an appropriate direct ventilation system such as that used for direct
ventilation;
• the adjacent room is not used as a bedroom;
• the adjacent room is not a common room of the building and is not subject to the risk of fi re
(e.g. fuel depot, garage, etc.).
The adjacent room has proper direct aeration and air can fl ow freely between the rooms.
The adjacent room has proper direct aeration and
air can fl ow freely between the rooms.
Opening's cross-sectional size insuffi cient
NO
/h Air intake speed in m/s
3
1
1
1
YES
The opening is too small for the air supply needs
of the appliance and fan (consult the table at the
bottom of the page for sizing the opening).
Net additional cross-sectional size for air fl ow in cm
The adjacent room lacks suffi cient aeration
for ensuring adequate aeration in the room
containing the appliance, due to – for example
– the presence of a fi replace (see same situation
under direct aeration).
NO
140
280
420
NO
GB
2
41