17
Instructions and Installation
Room ventilation
The air for combustion is taken
from the room air and the exhaust
gases are emitted directly into
the room.
Good room ventilation is essential
for safe operation of your
appliance. If there is no window
or door available for room
ventilation, an extra ventilation
must be installed.
Do not install this appliance in
a room below ground level unless
it is open to ground level on at
least one side.
Failure to install correctly is
dangerous and could result
in prosecution.
Room
volume (m
3
)
Permanent
vent size cm
2
Openable
window or
equivalent
also required
(A) (B)
<5
100
Yes
5 to 10
50(c)
>10
Nil
A
Alternative acceptable
forms of opening include
any adjustable grille or louvre,
hinged panel or other means
of ventilation that opens
directly to the outside air.
This is additional to the
permanent vent requirement.
B
Where no openable window
direct to outside is available,
other products shall be sought
(see 7.4) Building Regulations
advice should be followed,
see 7.4 (Note: clause 7.4 is
reproduced below).
C
If the room or internal
space containing these
appliances has a door
which opens directly to
the outside, no permanent
opening is required.
