Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual page 15

Installation site
From a pitched roof.
N
In regions with heavy snowfall.
P From vertical drain pipes and soil pipes.
Below eaves.
Q
Below gutters, pipe and drains.
The dimension below eaves, balconies and car ports can be reduced to this value, as long as the flue terminal is
R
extended to clear any overhang. External flue joints must be sealed with suitable silicon sealant.
S Above adjacent ground or balcony.
2)
Distance to a surface facing a terminal, unless it will cause a nuisance. BS 5440: Part 1 recommends that care
T
is taken when siting terminals in relation to surfaces facing a terminal.
U Clearance alongside another terminal.
V Above roof level.
W Minimum to vertical structure on roof, roof vent.
X Minimum to opening in adjacent building.
Y Minimum at an angle to a boundary which is not less than 300 mm to the terminal
Z Minimum measured to the nearest corner of the OPEN window
Aa No more than this value above ridge.
Ba Not less than this value below the opening window
1) There should be no ventilation/opening in the eaves within 300 mm distance of the terminal.
2) 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.
–
Terminals must be positioned so to avoid combustion products entering the building.
–
Support the flue at approximately one metre intervals and at a change of direction, use suitable brackets and
fixings.
–
Installations in car ports are not recommended.
–
The flue cannot be lower than 1 metre from the top of a lightwell due to the build up of combustion products.
–
Dimensions from a flue terminal to a fanned air inlet to be determined by the ventilation equipment.
6.7.2.2 Horizontal terminal positioning
Validity: Great Britain OR Ireland
BS 5440-1 recommends that fanned flue chimney terminals 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 directly across a boundary if the products are likely to
cause a nuisance to a neighbour or discharge over a walkway or patio.
For IE see current issue of IS 813.
For boilers covered within this manual.
Dimensions B and R:
These clearances may be reduced to 25 mm without affecting the performance of the boiler. In order to ensure that the con-
densate plume does not affect adjacent surfaces the terminal should be extended as shown below.
0020261389_03 ecoTEC plus Installation and maintenance instructions
Dimensions
400 mm
500 mm
25 mm
200 mm
75 mm
25 mm
300 mm
600 mm
300 mm
300 mm
Min. 300 mm
Min.
2000 mm
Min. 600 mm
Min. 600 mm
Max.
300 mm
Min. 300 mm
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