21
installation
Connecting the Flue
Flue System
The provision for satisfactory ue termi-
nation must be made as described in BS
5440-1.
The appliance must be installed so that the
ue terminal is exposed to outdoor air.
The terminal must not discharge into
another room or space such as an outhouse
or lean-to.
It is important that the position of the
terminal allows a free passage of air across it
at all times.
The terminal should be located with due
regard for the damage or discolouration that
might occur on buildings in the vicinity, it
must also be located in a place not likely to
cause nuisance.
In cold or humid weather water vapour may
condense on leaving the ue terminal.
The eect of such “steaming” must be consi-
dered.
If the terminal is less than 2 metres above a
balcony, above ground or above a at roof to
which people have access, then a suitable stain-
less steel terminal guard must be tted.
The minimum acceptable spacing from the ter-
minal to obstructions and ventilation openings
are specied in Fig. 1.
Fig. 1
- A Directly above or below an opening, window, etc 300 mm
- B Horizontally to an opening, window, etc 300 mm
- C Below gutters, soils pipes or drain pipes 75 mm
- D Below eaves 200 mm
- E From vertical drain pipe or soil pipe 75 mm
- F From internal or external corner 300 mm
- G Above ground, roof or balcony level 300 mm
- H From a surface facing the terminal 2500 mm
- I From a terminal facing a terminal 2500 mm
- J Vertically from a terminal on the same wall 1500 mm
- K Horizontally from an terminal on the same wall 300 mm
- L Fixed by vertical ue terminal
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