I Text From Bs 5440-1 On Fan-Supported Flue Gas Pipes; J Opening Of The Flue Pipe Below Eaves And Balconies; K Technical Data - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

Appendix
I Text from BS 5440-1 on fan-supported flue gas pipes
BS 5440–1: It is recommended that the fanned flue gas system terminal is positioned as follows:
–
At least 2 m from an opening in the building directly opposite, and
–
So that the combustion products are not discharged directly across a property boundary.
–
Dimensions D, E, F and G: These clearances may be reduced to 25 mm without affecting the performance of the boiler.
In order to ensure that the condensate vapour plume does not damage adjacent surfaces, the terminal should be exten-
ded as shown.
–
Dimension H: This clearance may be reduced to 25 mm without adversely affecting the performance of the boiler. How-
ever, in order to ensure that the condensate vapour plume does not damage adjacent surfaces, a clearance of 300 mm is
preferred. For IE, recommendations are given in the current issue of the IS 813.
J Opening of the flue pipe below eaves and balconies
The flue pipe must
Adequately secured
protrude beyond any overhang
air/flue gas pipe
K Technical data
Technical data – General
Designated country (des-
ignation in accordance
with ISO 3166)
Approved unit categories
Gas connection, boiler
side
Flow/return heating con-
nections, boiler side
Hot and cold water con-
nection, boiler side
Expansion relief valve
connector (min.)
Air/flue gas connection
Condensate drain pipe-
work (min.)
G20 natural gas flow
pressure
G31 propane gas flow
pressure
Gas flow rate at 15 °C
and 1013 mbar (based on
hot water generation, if
applicable), G20
60
Balcony/eaves
Gutter
938 (VUI GB
386/5‑5 A)
ecoTEC plus
GB (Great
Britain), IE
(Ireland)
II
2H3P
15 mm
22 mm
G 3/4"
15 mm
60/100 mm
19 mm
2.0 kPa
(20.0 mbar)
3.7 kPa
(37.0 mbar)
4.2 m³/h
Installation and maintenance instructions ecoTEC plus 0020209593_01