Flue Termination - Vaillant aquaPlus Instructions For Installation And Servicing

4 General Requirements

4.5.3 Flue termination

The following details refer to both flue systems.
a. The terminal must be positioned such that the
products of combustion can disperse freely at all
times.
b. In certain weather conditions a plume of water vapour
may be visible from the flue terminal. Positions where
this could be a nuisance should be avoided.
c. If the terminal is fitted less than 2 m above a balcony,
above ground or above a flat roof to which people
have access then a suitable terminal guard, Model K3,
must be provided and fitted (made by Tower Flue
Components, Tonbridge, TN9 1TB).
Note: Vertical flues must not terminate within 600 mm
of an openable window, air vent or any other ventilation
opening.
The flue assembly shall be so placed or shielded as to
prevent ignition or damage to any part of the building.
1) In addition, the terminal should not be nearer than 150 mm to an opening
in the building fabric formed for the purpose of accommodating a built-in
element such as a window.
* BS 5440-1 It is recommended that a fanned flue terminal should be
positioned as follows: a) at least 2 m from an opening in a building
directly opposite, and b) so that the products of combustion are not
directed to discharge across a boundary.
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A
G
F
J
E
Fig. 4.4: Flue termination
Terminal position for fan-assisted flue
(minimum distance)
A 1) Directly below an openable, above an opening or
horizontal to an opening i.e. air brick, opening
window or other , etc
B Below gutters, soil pipes or drain pipes
C Below eaves
D Below balconies (below car port roof)
E From vertical drain pipes and soil pipes
F From internal or external corners
G Above ground or balcony level
H From a surface or boundary facing a terminal
I From a terminal facing a terminal
J From an opening in a car port (e.g. door, window)
into a dweling
K Vertically from a terminal on the same wall
L Horizontally from a terminal on the same wall
M Distance from adjacent wall for vertical Flue
Instructions for installation and servicing aquaPLUS VUI 362-7
BCD B
F
M
G
A
K
F
A F
L
A
G
600*
1200
1200
1500
L
K
mm
300
25
25
25
25
25
300
300
500