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11
221473B
3 Flue and Ventilation
MINIMUM
SPACING
A
A
F
G
E
A
G
G
G
B,C
B,C
F
F
K
K
K
C
G
L
L
UNDER CAR PORT etc.
H,I
J
D
F
K
2816
MINIMUM SITING DIMENSIONS FOR
FANNED FLUE TERMINALS
POSITION
mm
A DIRECTLY BELOW AN OPENABLE
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 75
F FROM INTERNAL OR EXTERNAL
CORNERS 300
G ABOVE ADJACENT GROUND OR
BALCONY LEVEL 300
H FROM SURFACE 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
TABLE 3
Position Air from Air Direct
of Room or from
Air Vent Internal space Outside
High Vent 326cm
2
(50in
2
) 163cm
2
(25in
2
)
Low Vent 326cm 2 (50in 2 ) 163cm 2 (25in 2 )
Diagram 3.5
3.4 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
a 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 3.5 and
can be bought from:
Tower Flue Components Ltd.
Morley Road
Tonbridge
Kent
TN9 1RA
their type K3
3.5 Timber Frame Buildings
If the boiler is to be installed in a timber frame building it should
be fitted in accordance with the Institute of Gas Engineers
document IGE/UP/7/1998. If in doubt seek advice from the local
gas undertaking or Hepworth Heating Ltd.
3.6 Room Ventilation
The boiler is room sealed, so when it is installed in a room or
space, a permanent air vent is not required.
3.7 Cupboard or Compartment Ventilation
If the boiler is to be fitted in a cupboard or compartment,
permanent high and low level air vents must be provided in
accordance with the rules in force in the countries of destination.
The vents must have at least the effective areas as given in
Table 3.