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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 The vents must have
at least the effective areas as given in Table 3.
TABLE 3
Position
Air from
of
Room or
Air Vent
Internal space
High Vent
392cm
2
2
Low Vent
392cm
Supplied By www.heating spares.co Tel. 0161 620 6677
3 Flue and Ventilation
Air Direct
from
Outside
(60.8in
2
)
196cm
2
(30.4in
2
)
2
2
2
(60.8in
)
196cm
(30.4in
)
A
A
F
A
G
E
G
Under Car Port etc.
MINIMUM SITING DIMENSIONS
FOR FANNED FLUE
TERMINALS POSITION
A
DIRECTLY BELOW AN OPENABLE
WINDOW, AIR VENT, OR ANY OTHER
VENTILATION OPENING
B
BELOW GUTTER, DRAIN/SOIL PIPE
C
BELOW EAVES
D
BELOW A BALCONY OR CAR PORT
E
FROM VERTICAL DRAIN PIPES AND
SOIL PIPES
F
FROM INTERNAL OR EXTERNAL
CORNERS
G
ABOVE ADJACENT GROUND OR
BALCONY LEVEL
H
FROM A SURFACE FACING THE
TERMINAL
I
FACING TERMINALS
J
FROM OPENING (DOOR/WINDOW) IN
CAR PORT INTO DWELLING
K
VERTICAL FROM A TERMINAL
L
HORIZONTALLY FROM A TERMINAL
11
C
B,C
B,C
K
L
L
G
K
K
F
F
G
G
D
J
F
K
H,I
MINIMUM
SPACING
in mm
300
75
200
200
75
300
300
600
1200
1200
1500
300
Diagram 3.5
221474C
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