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electrical switch or appliance control, uti-
lising mains electricity should be so situ-
ated that it cannot be touched by a person
using the bath or shower.
The location must permit the provision of an
adequate flue and termination.
For unusual locations special procedures may
be necessary and BS 6798 gives detailed
guidance on this aspect.
A compartment used to enclose the appliance
must be designed specifically for this purpose.
This appliance is not suitable for external in-
stallation.
5.3
Flue system
The provision for satisfactory flue termination
must be made as described in BS 5440 part 1.
For Ireland (IE), refer to I.S.813.2002.
The appliance must be installed so that the
flue terminal is exposed to external air.
It must not be installed so that the terminal
discharges into an other room or space as an
outhouse or lean-to. It is important that the po-
sition of the terminal allows a free passage of
air across at all times.
The terminal should be located with due regard
for the damage or discoloration that might oc-
cur to building products in the vicinity. In cold
and/or humid weather water vapour may con-
dense on leaving the flue terminal; the effect
of such "steaming" must be considered.
Pluming may easily occur at the terminal.
Where possible, terminal position which could
cause a nuisance should be avoided.
The minimum acceptable spacing from the
terminal to obstructions and ventilation open-
ings are specified in Fig. 5.1.
GENERAL REQUIREMENTS
BC
G
E
L
JK
I
Fig. 5.1
Terminal position
A Directly below the window or
other opening
B Below gutters, soil pipes or drain pipes 75
C Below eaves
D Below balconies*
E Below car port roof
F From vertical drain pipes and soil pipes
150
G From internal corners**
H From external corners
I
Above ground or balcony level***
J From a next door boundary
k From a terminal facing a terminal
L From an opening in the car port
(e.g. door, window) into dwelling
M Vertically from a terminal in the
same wall
N Horizontally from a terminal in the
same wall
O Above the roof pitch with roof slope less
than or equal to 30°
O Above the roof pitch with roof slope
more than 30°
P From wall face
Q From, above or to side of an opening 600
* Wherever practicable to do so, the flue
should be extended beyond the perimeter
O
H
P
I
F
A
D
Q
I
M
N
I
I
mm
300
200
600
NO
450
300
300
2500
2500
NO
1500
300
350
600
300
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