Flue Termination - Vaillant ecoTEC plus Instructions For Installation And Servicing

3 General requirements
Fig. 3.5 Vertical Flue System Art. No. 30 32 00
3.5.1

Flue termination

The following details refer to both flue systems.
a. The terminal must be located where the combustible
substances can escape freely at all times.
b. A plume of water vapour will sometimes 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 must be
provided and fitted (made by Tower Flue Components,
Tonbridge, TN9 1TB, Model K3, plastic coated).
h Note!
Vertical flues must not terminate within
600mm 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.
Fig. 3.6 Terminal locations
h Note!
Vertical flues must not terminate within
600mm of an openable window, air vent or any
other ventilation opening.
12
Terminal position
Directly below an opening, above an opening or hori-
A
zontal to an opening, air brick, opening window, etc.
B Below gutters, soil pipes or drain pipes
C Below eaves
D Below balconies
E From vertical drain pipes and soil pipes
F From internal or external corners
G Above ground, roof or balcony
H From a surface facing a terminal
I From a terminal facing a terminal
From an opening in the car port (e.g. door, window)
J
into the dwelling
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
Table 3.1 Flue terminal position for a fan assisted concentric flue
The flue assembly shall be so placed or shielded as to
prevent ignition or damage to any part of the building.
h Note!
In addition, the terminal should not be located
closer than 150 mm from a wallopening provided
for e.g. a window. Boundary flue terminations
must as a minimum comply with Building regu-
lation part „J" 600 mm and should also be in
accordance with the Guide to Condensing Boiler
Installation which recommends 2.5 m from wall,
fence or boundary.
Where a plume diverter terminal is used this is
measured in the direction of the flow of products.
BS 5440–1: It is recommended that the fanned flue ter-
minal should be positioned as follows:
a. at least 2 m from an opening in the building directly
opposite, and
b. so that the products of combustion are not directed
to discharge across a boundary.
1. Dimensions B, C and D: These clearances may be re-
duced to 25 mm without affecting the performance of
the boiler. In order to ensure that the condensate
plume does not affect adjacent surfaces the terminal
should be extended as shown in Fig. 3.7.
2. Dimension F: This clearance may be reduced to 25
mm without effecting the performance of the boiler.
However, in order to ensure that the condensate
plume does not affect adjacent surfaces a clearance
of 300 mm is preferred. For IE, recommendations are
given in the current edition of IS 813.
Instructions for installation and servicing ecoTEC plus 0020020828_07
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300
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