5 Before installation
30
Combi 2
A*
2
3
1
Key
Description
mm
Key
Description
mm
C
(1)
Horizontally to an opening, air brick,
opening window etc.
300
L
From an opening in carport (e.g. door,
window) into the dwelling
1200
D
(2)
Below gutters, soil pipes or drain pipes
25 (75)
M
Vertically from a terminal on the same
wall
1500
E
(2)
Below eaves
25 (200)
N
Horizontally from a terminal on the
same wall
300
F
(2)
Below balconies or car port roof
25 (200)
R
From adjacent wall to flue (vertical on-
ly)
300
G
(2)
From a vertical drain pipe or soil pipe
25 (150)
S
From an adjacent opening window
(vertical only)
1000
H
(2)
From an internal or external corner
25 (300)
T
Adjacent to windows or openings on
pitched and flat roofs
600
I
Above ground, roof, or balcony level
300
U
Below windows or openings on pitch-
ed roofs
2000
(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 dimension D,E,F,G or H is 25mm then the remainder MUST be as
shown in brackets, in accordance with BS 5440–1.
Important
Under car ports we recommend the use of the plume
displacement kit. The terminal position must ensure the safe and
nuisance
free dispersal of combustion products.
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.
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.
Fig.17
Property boundary
1
Property boundary line
2
Terminal assembly
3
Top view rear flue
A
300mm minimum*
*Reduction to the boundary is possible down to 25mm but the flue
deflector must be used.
Important
The distance from a fanned draught appliance terminal installed
parallel to a boundary may not be less than 300mm in accordance
with the diagram opposite.
PN-0000457
