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

Appendix
H Text from BS 5440-1 on fan-supported flue gas guiding
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.
I Opening of the flue pipe below eaves and balconies
The flue pipe must
Adequately secured
protrude beyond any overhang
air/flue gas pipe
J Technical data
Technical data – Power/load
Nominal heat output range P at 40/30 °C
Nominal heat output range P at 50/30 °C
Nominal heat output range P at 60/40 °C
Nominal heat output range P at 80/60 °C
Maximum heat input, heating side
Minimum heat input heating side
Technical data – Heating
Maximum flow temperature
Max. flow temperature adjustment range (default setting:
75 °C)
Permissible total overpressure
Circulation water volume (with reference to ΔT= 20 K)
Approx. condensate rate (pH value approx. 3.7) in heat-
ing mode at 40/30 °C
Technical data – cylinder charging mode
Maximum heat input in cylinder charging mode
Cylinder charging output
42
Balcony/eaves
Gutter
VU GB 656/4‑5
14.9 ... 69.2 kW
14.6 ... 67.6 kW
14.1 ... 65.7 kW
13.8 ... 63.7 kW
65.0 kW
14.0 kW
VU GB 656/4‑5
90 ℃
35 ... 85 ℃
0.3 MPa
(3.0 bar)
2,750 l/h
6.5 l/h
VU GB 656/4‑5
65.0 kW
Such as heating
Installation and maintenance instructions ecoTEC plus 0020029173_04