Supplied By www.heating spares.co Tel. 0161 620 6677
13
220692C
13
SECTION
4
Flue and Ventilation
A DIRECTLY BELOW AN OPENABLE WINDOW, AIR VENT, 300
OR ANY OTHER VENTILATION OPENING
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) 1200
IN CARPORT INTO DWELLING
K VERTICAL FROM A TERMINAL 1500
L HORIZONTALLY FROM A TERMINAL 300
MIN.
SPACING
(mm)
MINIMUM SITING DIMENSIONS
FOR FLUE TERMINALS
A
A
F
G
E
A
G
G
G
B,C
B,C
F
F
K
K
K
C
G
L
L
Car Port etc.
H,I
J
D
F
K
0103M
The flue must be installed in accordance
with the current issue of BS5440 Part 1.
The boiler must be installed so that the
terminal is exposed to the external air.
It is important that the position of the
terminal allows the free passage of air
across it at all times.
Terminal Position
The minimum acceptable spacings from
the terminal to obstructions and
ventilation openings are as shown in the
diagram.
Where the terminal is fitted within
600mm (24in) below plastic guttering
an aluminium shield 1500mm (5ft) long
should be fitted to the underside and
immediately beneath the guttering or
eaves.
Where the terminal is fitted within
450mm (18in) below eaves or painted
guttering an aluminium shield 750mm
(2ft6in) long should be fitted to the
underside and immediately beneath the
guttering or eaves.
Terminal Protection
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.
A suitable terminal guard can be bought
from,
Tower Flue Components Ltd.,
Morley Road,
Tonbridge,
Kent.
TN9 1RA
their reference K3.
4783
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