7.0 Site Requirements
15
7.8
Flue
1.
The flue terminal position must always be
in accordance with the current edition of B.S.
5440 Part 1, and either Part J of the Building
Regulations England and Wales or Part J of
the Building Standards (Scotland)
Regulations as appropriate.
2. If the terminal discharges onto a pathway or
passageway, check that combustion products will
not cause a nuisance and that the terminal will
not obstruct the passageway.
3. If a terminal is less than 2 metres above a
balcony, above ground or above a flat roof to
which people have access, then a suitable
terminal guard must be provided.
Terminal Position with Minimum Distance (Fig. 10)
(mm)
A
Directly below an openable window, air vent or any other
ventilation opening.
300
B
Below gutters, drain or soil pipes.
25
C
Below eaves.
25
D
Below balconies or car port roof.
25
E
From vertical drain pipes and soil pipes.
25
F
From internal or external corners.
25
G
Above ground or balcony level.
300
H
From a surface facing a terminal.
600
I
Facing a terminal.
1200
J
For an opening (door/window) in car port into dwelling.
1200
K
Vertically from a terminal on the same wall.
1500
L
Horizontally from a terminal on the same wall.
300
M Above an opening, air brick opening window etc.
300
N
Horizontally to an opening, air brick opening window etc.
300
Fig. 10
L
G
G
E
J
D
K
G
A
A
D
F
H,I
B,C
F
Likely flue positions requiring
a flue terminal guard
M
N
300 min
Terminal
Assembly
Top View Rear Flue
Property Boundary Line
