Flue Termination; Flue Pipe - Vaillant ecoMAX 665 Installation And Maintenance Manual

4 Installation
3
Fig. 4.6 Mounting the heating flow and return service valves
4.6.1

Flue termination

A
G
F
J
E
Fig. 4.7 Flue termination
Terminal position
A Directly below an opening, above an opening or ho-
rizontal 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
K Vertically from a terminal on the same wall
L Horizontally from a terminal on the same wall
M Distance from adjacent for vertical Flue
Table 4.2 Terminal position for a fan assisted concentric flue
The following details refer to both flue systems.
a. The terminal must be positioned such that the prod-
ucts of combustion can disperse 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 (contact Tower Flue Components, Tonbridge, TN9 1TB).
14
5
4
B F
BCD
M
G
A
K
F F
A
L
A
G
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 sheilded as to
prevent ignition or damage to any pary of the building.
Note!
In addition, the terminal should not be nearer
than 150 mm to an opening in the building fab-
ric formed for the purpose of accommodating a
built–in element such as a window.
BS 5440–1 It is recommended that the fanned flue ter-
minal should be positioned as follows:
a) at least 2m from an opening in the building directly
opposite, and
b) so that the products of combustion are not directly
directed to discharge across a boundary.
1) Dimensions B, C and D:
These clearances may be reduced to 25 mm without
L
affecting the performance of the boiler. In order to
K
ensure that the condensate plume does not affect
adjacent surfaces the terminal should be extended as
shown in fig. 4.8.
2) Dimension F:
This clearance may be reduced to 25 mm without
affecting the performance of the boiler. However, in
order to ensure that the condensate plume does not
mm
affect adjacent surfaces a clearance of 300 mm is
300
preferred. For IE, recommendations are given in the
current edition of IS 813.
75
200
200
25
300
300
600
1200
1500
300
flue adequately
500
supported
Fig. 4.8

4.6.2 Flue pipe

d Danger!
Only Vaillant original 80/125 mm flue pipes may be
used when installed in a room sealed application
(type C). Malfunctions can occur if you use other
accessories. These may result in damage and injury.
Installation and maintenance manual ecoMAX 665 / 0020020159_03
balcony/eaves
gutter
flue extended to
clear any overhang