N
I
I
G
F
M
I
A
A
F
H
J,K
D
E
H
Likely flue positions requiring
a flue terminal guard
C
R
A
I
J,K
I
L
S
B
T
U
Top
View
Top
View
C
oncentric
Termina
l
Assemb
l
y
Rear
Concentric
Flue
Side Concentric
Flue
300 min.
300 min.
MA
X
002
7
A
P
roperty
Boundary
L
ine
Fig.
5
Terminal
P
osition with Minimum Distance (mm)
For IE, refer to I.S.
81
3 "Domestic Gas Installation".
Fanned Draught Balanced Flue
Note:
The distance from a fanned draught appliance terminal installed
parallel to a boundary may not be less than 300 mm in accordance
with the diagram on the left.
1
In addition, the terminal should be no nearer than
15
0 mm 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 2
5
mm clearance is allowed per installation. If one of the
dimensions D,E,F,G or H is 2
5
mm then the remainder MUST be as
shown in brac
k
ets, in accordance with BS
5
440
P
t.
1
.
Opening
Window or Door
15
0mm
MIN.
I
M
PORTANT:
If fitting a
P
lume
Displacement Flue Kit, the air inlet
must be a minimum of
1
00mm
from any opening windows or
doors
P
lume
Displacement Kit
Air Inlet
I
M
PORTANT:
• Under car ports we recommend the use of the plume
displacement
k
it.
• The terminal position must ensure the safe and
nuisance - free dispersal of combustion products.
Terminal
P
osition with Minimum Distance (Fig.
18
)
(mm)
A
1
Directly below an opening, air bric
k
, opening windows, etc.
300
B
1
Above an opening, air bric
k
, opening window etc.
300
C1
Horizontally to an opening, air bric
k
, opening window etc.
300
D2 Below gutters, soil pipes or drain pipes.
2
5
(
75
)
E2 Below eaves.
2
5
(200)
F2 Below balconies or car port roof.
2
5
(200)
G2 From a vertical drain pipe or soil pipe.
2
5
(
15
0)
H2 From an internal or external corner.
2
5
(300)
I
Above ground, roof or balcony level.
300
J
From a surface or boundary line facing a terminal.
600
K
From a terminal facing a terminal (Horizontal flue).
1
200
From a terminal facing a terminal (Vertical flue).
600
L
From an opening in carport (e.g. door, window) into
the dwelling.
1
200
M Vertically from a terminal on the same wall.
15
00
N
Horizontally from a terminal on the same wall.
300
R
From adjacent wall to flue (vertical only).
300
S
From an adjacent opening window (vertical only).
1
000
T
Adjacent to windows or openings on pitched and flat roofs
600
U
Below windows or openings on pitched roofs
2000
1
4
© Baxi Heating UK Ltd 2015