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11
221474C
3 Flue and Ventilation
MINIMUM SITING DIMENSIONS
FOR FANNED FLUE
TERMINALS POSITION
A
DIRECTLY BELOW AN OPENABLE
WINDOW, AIR VENT, OR ANY OTHER
VENTILATION OPENING
300
B
BELOW GUTTER, DRAIN/SOIL PIPE
75
C
BELOW EAVES
200
D
BELOW A BALCONY OR CAR PORT
200
E
FROM VERTICAL DRAIN PIPES AND
SOIL PIPES
75
F
FROM INTERNAL OR EXTERNAL
CORNERS
300
G
ABOVE ADJACENT GROUND OR
BALCONY LEVEL
300
H
FROM A SURFACE FACING THE
TERMINAL
600
I
FACING TERMINALS
1200
J
FROM OPENING (DOOR/WINDOW) IN
CAR PORT INTO DWELLING
1200
K
VERTICAL FROM A TERMINAL
1500
L
HORIZONTALLY FROM A TERMINAL
300
MINIMUM
SPACING
in mm
0103M
Under Car Port etc.
H,I
J
D
F
K
A
A
F
G
E
A
G
G
G
B,C
B,C
F
F
K
K
K
C
G
L
L
High Vent
392cm
2
(60.8in
2
)
196cm
2
(30.4in
2
)
Low Vent
392cm
2
(60.8in
2
)
196cm
2
(30.4in
2
)
TABLE 3
Position
Air from
Air Direct
of
Room or
from
Air Vent
Internal space
Outside
Diagram 3.5
4783
3.4 Terminal Guard
A terminal guard is required if persons could come into contact with
the terminal or the terminal could be subject to damage.
If a terminal guard is required, it must be positioned to provide a
minimum of 50mm clearance from any part of the terminal and be
central over the terminal.
The guard should be similar to that shown in diagram 3.5, and can
be bought from:
Tower Flue Components Ltd
Morley Road
Tonbridge
Kent
TN9 1RA
their type K3.
3.5 Timber Frame Buildings
If the boiler is to be installed in a timber frame building it should be
fitted in accordance with the Institute of Gas Engineers document
IGE/UP/7/1998. If in doubt seek advice from the local gas undertaking
or Hepworth Heating Ltd.
3.6 Room Ventilation
The boiler is room sealed, so when it is installed in a room or space,
a permanent air vent is not required.
3.7 Cupboard or Compartment Ventilation
If the boiler is to be fitted in a cupboard or compartment, permanent
high and low level air vents must be provided The vents must have
at least the effective areas as given in Table 3.