N
I
I
G
F
M
I
A
A
F
H
J,K
D
E
H
C
R
A
I
J,K
I
L
S
B
T
U
Likely flue positions requiring
a flue terminal guard
1. In addition, the terminal should be no nearer than 150mm
to an opening in the building fabric formed for the purpose of
accommodating a built-in element such as a window frame.
2. Only ONE 25mm clearance is allowed per installation. If one of
the dimensions D, E, F, G or H is 25mm then the remainder MUST
be as shown in brackets, in accordance with B.S.5440-1.
Terminal Position with Minimum Distance
(mm)
M Vertically from a terminal on the same wall 1500
N Horizontally from a terminal on the same wall 300
R From adjacent wall to ue (vertical only) 300
S From adjacent opening window (vertical only) 100
T Adjacent to windows or openings on pitched and at roofs 600
U Below windows or openings on pitched roofs 2000
MX8013 - Technical pocket guide DL v14_post proof.indd 11 30/08/2012 14:29
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