Potterton Performa 24 Installation & Servicing Instructions Manual page 14

Fig. 15
Q
D
J
Fig. 16
14
Aluminium
Shield
S
L
K
G
E
Likely flue positions requiring
a flue terminal guard
7.8
1. The following guidelines indicate the general
requirements for siting balanced flue terminals.
Recommendations for flues are given in BS 5440
Pt.1.
2. If the terminal is fitted within 1 metre of a
plastic gutter, within 500mm of a painted eave or
a painted gutter, an aluminium shield of at least
1 metre long should be fitted to the underside of
the gutter or painted surface. An air space of
5mm should be left between shield and gutter
(Fig. 15).
3. If the terminal discharges onto a pathway or
passageway, check that combustion products will
not cause a nuisance and that the terminal will
not obstruct the passageway.
4. If a terminal is less than 2 metres above a
balcony, above ground or above a flat roof to
which people have access, then a suitable
terminal guard must be provided.
B,C
R
N
G
M
D
A
A
F
F
G
Terminal Position with Minimum Distance (Fig. 10)
A Directly below an openable window or other
opening, e.g. an air brick.
B Below gutters, drain/soil pipe.
C Below eaves.
D Below balcony/car port roof.
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 For opening (door/window) in car port into dwelling.
K Vertically from a terminal on the same wall.
L Horizontally from a terminal on the same wall.
M Above an opening, air brick, opening window etc.
N Horizontally to an opening, air brick, opening window etc.
Vertical Flues - minimum distance mm to edge of terminal.
P Above the roof level (to base of terminal).
Q From adjacent wall to flue.
R From an adjacent opening window.
S From another terminal.
7.0 Site Requirements
Flue
P
H,I
(mm)
300
75
200
200
75
300
300
600
1200
1200
1500
300
300
300
300
300
1000
600