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2000225065A
3 Flue Location and Ventilation
Diagram 3.4
TERMINAL GUARD
3.4 Terminal Position
The minimum acceptable siting dimensions for the terminal
from obstructions, other terminals and ventilation openings are
shown in diagram 2.1. For Ireland the minimum distances for
flue terminal positioning must be those detailed in I.S.813
"Domestic Gas Installations".
The terminal must be exposed to the external air, allowing free
passage of air across it at all times.
Being a condensing boiler some pluming may occur from the
flue outlet. This should be taken into consideration when
selecting the position for the terminal.
Carports or similar extensions of a roof only, or a roof and one
wall, require special consideration with respect to any openings,
doors, vents or windows under the roof. Care is required to
protect the roof if made of plastic sheeting. If the carport
comprises of a roof and two or more walls, seek advice from the
local gas supply company before installing the boiler.
3.5 Terminal Guard
A terminal guard is required if persons could come into contact
with the terminal or the terminal could be subject to damage.
If a terminal guard is required, it must be positioned to provide
minimum of 50mm clearance from any part of the terminal and
be central over the terminal.
The guard should be similar to that shown in diagram 3.4.
A suitable guard is manufactured by: -
Tower Flue Components
Morley Rd.
Tonbridge
Kent
TN9 1RA.
Size: 280mm x 280mm x 270mm.
MINIMUM SITING DIMENSIONS FOR
FANNED FLUE TERMINALS POSITION
MM
HORIZONTAL FLUES
A DIRECTLY BELOW, ABOVE OR
HORIZONTALLY TO AN OPENING, AIR BRICK,
OPENING WINDOW, AIR VENT, OR ANY
OTHER VENTILATION OPENING
300
B BELOW GUTTER, DRAIN/SOIL PIPE
75
C BELOW EAVES
200
D BELOW A BALCONY OR CAR PORT
200
E FROM VERTICAL DRAIN PIPES AND
SOIL PIPES
150
F FROM INTERNAL/EXTERNAL CORNERS
OR TO A BOUNDARY ALONGSIDE THE
TERMINAL
300
G ABOVE ADJACENT GROUND OR
BALCONY LEVEL
300
H FROM SURFACE OR A BOUNDARY
FACING THE TERMINAL
600
I
FACING TERMINALS
1200
J FROM OPENING (DOOR/WINDOW)
IN CAR PORT INTO DWELLING
1200
K VERTICAL FROM A TERMINAL
1500
L HORIZONTALLY FROM A TERMINAL
300
VERTICAL FLUES
M FROM ADJACENT WALL TO FLUE
300
N FROM ANOTHER TERMINAL
600
P FROM ADJACENT OPENING WINDOW
1000
Q ABOVE ROOF LEVEL
300
Diagram 3.3
A
A
E
G
G
B,C
B,C
F
K
C
UNDER CAR PORT etc.
H,I
J
D
F
K
F
L
M
Q
N
P
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