Technical information

16
3.4 Terminal Position
The minimum acceptable siting dimensions for
the terminal from obstructions, other terminals
and ventilation openings are shown in diagram
3.5. Dimensions shown are measured from edge
of terminal.
The terminal must be exposed to the external
air, allowing free passage of air across it at all
times.
Being a condensing boiler some pluming may
occur from the flue outlet. This should be taken
into consideration when selecting the position for
the terminal.
NOTE: If necessary it is permitted to increase
the terminal protrusion through the outside wall
to greater than the minimum dimension of 87mm
but no more than 600mm, see diagram 1.1.
F‡ and L‡ See diagram 3.5 . Carports or similar
extensions of a roof only, or a roof and one wall,
require special consideration with respect to any
openings, doors, vents or windows under the roof.
Care is required to protect the roof if made of plastic
sheeting. If the carport comprises of a roof and
two of more walls, seek advice from the local gas
supply company before installing the boiler.
H* and J* See diagram 3.5 . These dimensions
comply with the building regulations, but they
may need to be increased to avoid wall staining
and nuisance from pluming depending on site
conditions.
Plume Diverter Kit: Part No. A2045400 can be
used to overcome many site issues.
12570
Diagram 3.5
Minimum siting dimensions
for fanned flue terminals MM
Horizontal Flues
A Directly below an opening,
air brick, opening windows. 300
B Above an opening air brick,
opening windows. 300
C Horizontally to an opening,
air brick opening window. 300
D Below gutter, drain soil pipe. 25
E Below eaves. 25
F‡ Below a balcony or car port. 25
G From vertical drain pipes,
soil pipes. 25
H From internal / external corners. 25
H* To a boundary alongside
the terminal. 300
I Above adjacent ground
or balcony. 300
J* From surface or a boundary
facing the terminal. 600
K Facing the terminals. 1200
L‡ From opening (door / window)
in car port into dwelling. 1200
M Vertical from a terminal. 1500
N Horizontally from a terminal. 300
Vertical Flues
P From another terminal. 600
Q Above roof level. 300
R From adjacent opening window. 1000
S From adjacent wall to flue. 300