Minimum
dimensions
of
flue
terminal
positions
for
balanced
room
sealed
flues
with
fanned
draught:
DRWG.
TERMINAL
POSITION
DISTANCE
REF:
A'
Directly
below
an
opening, air brick, opening windows, etc.
300mm
B'
Above
an
opening, air brick, opening window, etc.
300mm
C'
Horizontally
to
an
opening, air brick, opening window, etc.
300mm
D
Below
gutters, soil pipes
or
drain pipes 75mm
E
Below
eaves
200mm
F2
Below
balconies
or
car port roof (lowest point)
200mm
G From a vertical drain pipe or soil pipe 150mm
H From
an
internal or external corner
300mm
I Above ground, roof or balcony
300mm
J From a surface facing the terminal
600mm
K From a terminal facing the terminal
1200mm
L2
From
an
opening
in
the car port
(e.g.
door, window) into the dwelling
1200mm
M Vertically from a terminal on the same wall
1500mm
N Horizontally from a terminal on the same wall
300mm
0 From a non combustible vertical structure on the roof
*
p
Above intersection with roof
*
0 Adjacent
to
windows
or openings on pitched and flat roofs
600mm
R
Below
windows
or openings on pitched roofs
2000mm
In
addition, the terminal should not
be
nearer than 150mm (fanned draught}
to
an
opening
in
the building
fabric
formed
for
the purpose
of
accommodating a built-in element such as a
window
frame.
2 Not recommended.
*
See
instructions supplied with vertical
flue
kits.
~ORCESTER
Bosch
Group
INSTALLATION & SERVICING INSTRUCTIONS
FOR
WORCESTER BOSCH GREENSTAR 30CD•/40CD• Conven\•onal
6 720 614 556a (2007/07)
FLUE TERMINAL POSITIONS
The flue must be fitted and terminated
in
accordance with the recommendations
of
BS5440
: Part
1.
The flue must not cause
an
obstruction.
Discharge and any noise from the
flue outlet
must not cause a nuisance.
Flue gases have a tendency
to
plume and
in
certain weather conditions a white plume
of
condensation will be discharged from the
flue outlet.
Where
this could be a nuisance,
for
example, near security lighting,
an
alter-
nate position should be found.
The air
inlet/outlet
duct
and the terminal
of
the boiler must not be closer than
25mm
to
any
combustible material.
Detailed
recommendations on protection
of
combustible materials are given
in
BS
5440:1
• A protective terminal guard must be fitted if
the
terminal
is
2m or less above a surface to
which
people have access.
The guard must be spaced
equally (mini-
mum
50
mm) around the flue and fixed
to
the wall with plated screws. See
Contact
Information (inside front cover).
FLUE TERMINAL POSITIONS
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