Technical data
6 720 611 445 GB (04.05)
Installation
17
3.8.1 Siting the Flue Terminal
The flue must be installed in accordance with
BS 5440:1 and the Building Regulations. Flue termi-
nals in carports and under balconies are to be avoided.
The terminal must be positioned so that it does not
cause an obstruction nor the combustion products a
nuisance. See fig. 16 and table 9.
The terminal will, at times, give out a plume of water
vapour and consideration must be given to this when
choosing a terminal position. Keep clear of security
lighting, activated by passive infra-red sensing heads.
If the terminal is less than 2 m above a surface to which
people have access then a guard must be fitted. The
guard must be evenly spaced about the terminal with a
space of 50 mm in each direction and fixed with plated
screws.
A guard Type K6 for the standard horizontal flue, can be
obtained from Tower Flue Components, Vale Rise, Ton-
bridge TN9 1TB.
Fig. 16
Minimum dimensions of flue terminal positions (all types) (see fig. 16)
K
H
H
A
G
C
D, E
J
N
Q
F
P
Q
B
I
L
N
N
M
M
Q
I
6 720 611 400-25.1O
Dimension Terminal position (kW input expressed in net) Balanced flues room sealed: Fanned draught
A
1)
Directly below an opening, air brick, opening windows, etc. 300 mm
B
1)
Above an opening, air brick, opening window, etc. 300 mm
C
1)
Horizontally to an opening, air brick, opening window, etc. 300 mm
D Below gutters, soil pipes or drain pipes 75 mm
E Below eaves 200 mm
F
2)
Below balconies or car port roof (lowest point) 200 mm
G From a vertical drain pipe or soil pipe 75 mm
H From an internal or external corner or 300 mm
I Above ground roof or balcony 300 mm
J From a surface or facing the terminal or boundary 600 mm
K From a terminal facing the terminal 1200 mm
L
2)
From an opening in the car port (e. g. door, window) into the dwelling 1200 mm
M Vertically from a terminal on the same wall 1500mm
N Horizontally from a terminal on the same wall 300 mm
P From a vertical structure on the roof 500 mm
Q Above intersection with roof 300 mm
Table 9
1) In addition, the terminal should not be nearer than 150 mm (fanned draught) to an opening in the building fabric formed for the purpose of accommodat-
ing a built-in element such as a window frame.
2) Not recommended